Viessmann boiler service mode

contractors Vitodens 242-F Type B2UA

Covers: Vitodens 242-F B2UA

GC 41-819-18, 41-819-19

Entering Service Menu

1. Press OK and 'menu' (three lines symbol) simultaneously for approx. 4 s.

From manual 5773 238 GB, page 119.

Exiting Service Menu

1. Select 'Terminate service?'
2. Select 'Yes'
3. Confirm with OK

From manual 5773 238 GB, page 119.

CO₂ and CO from manual 5773 238 GB, page 71. Check against the data badge.

The boiler is equipped with an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. For natural gas, no adjustment is required. For LPG, the gas train adjusting screw must be set to '2' and coding address 82 set to 1. (page 52)

Vitodens 025-W

Covers: Vitodens 025-W, BPKB-24, Vitodens 025-W, BPKB-28

GC 47-819-64, 47-819-65

Calling up the service menu

1. Press the button with three horizontal lines and the up arrow button simultaneously for approx. 4 s.
2. Use the up arrow button to select the required menu section (for example "S", "C" or "d").
3. Press OK.

From manual 6227767, page 55.

Exiting the service menu

1. Press return button for 3 s.

From manual 6227767, page 55.

Force max & min rate (Emissions test mode S.1)

1. Select service menu item S.1.
2. Confirm LO with OK: Boiler operates at minimum output.
3. Confirm HI with OK: Boiler operates at maximum output.
4. Confirm OFF with OK while LO or HI mode is active: The boiler cancels the heat demand.

From manual 6227767, page 56.

CO₂ and CO from manual 6227767, page 52. Check against the data badge.

The boiler is equipped with a pneumatic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality (page )

Vitodens 050-W

Covers: Vitodens 050-W Bpjc 29kW Combi Boiler, Vitodens 050-W Bpjc 35kW Combi Boiler, Vitodens 050-W BPJD 29kW Combi Boiler, Vitodens 050-W BPJD 35kW Combi Boiler

GC 47-819-31, 47-819-32, 47-819-38, 47-819-39

Enter Service Mode (Filling Function / General Service)

1. Press MODE and simultaneously and hold for approx. 3 s.
2. "SERV" is displayed and "1" flashes.
3. Press OK to confirm.
4. "0" flashes on the display.
5. Use / to set "I" (for filling function) or select the required service menu number.
6. Press OK to confirm.

From manual 5675991, page 27.

Exit Service Mode

1. Press MODE and simultaneously and hold for 3 s. Service mode is terminated. Service mode also terminates automatically after 30 min.

From manual 5675991, page 31.

Force Burner Output / Manual Rate (CO2 Testing)

1. Press MODE.
2. Press / repeatedly until "SERV" is displayed.
3. Press OK to confirm. "OFF" appears on the display.
4. Use / to adjust the burner output: _ = 20%, __ = 40%, ___ = 60%, ____ = 80%, _ _ _ _ _ 00 = 100%.
5. Confirm your setting with OK.
6. Alternatively use / to set the burner output to "OFF" after checking, or the function terminates automatically after 30 min.

From manual 5675991, page 39.

CO₂ and CO from manual 5675991, page 37, 39. Check against the data badge.

Preset for operation with natural gas. Conversion to LPG P requires a gas conversion kit. (page )

Vitodens 050-W Type B0HA, B0KA, B0KA-M

Covers: Vitodens 050-W B0HA-19, Vitodens 050-W B0HA-25, Vitodens 050-W B0KA-25, Vitodens 050-W B0KA-30, Vitodens 050-W B0KA-30-M, Vitodens 050-W B0KA-35

GC 41-819-63, 41-819-64, 47-819-55, 47-819-56, 47-819-57, 47-819-58

Calling up the service menu

1. Tap the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Select the required menu section (e.g. "b.1" Connect with software tool).

From manual 6194588 GB, page 61.

Exiting the service menu

1. Tap the menu button (three horizontal lines) several times.
2. The system exits the service menu automatically after 30 min.

From manual 6194588 GB, page 61.

Force upper/lower heating output (test mode)

1. Tap the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Use the up/down arrow buttons to select "b.6" for the upper/lower heating output.
3. OK
4. Use the up/down arrow buttons to set the value. "OF" - off, "1" - Min. heating output, "2" - Max. heating output
5. OK. Burner is operating with correspondingly adjusted heating output.

From manual 6194588 GB, page 56.

CO₂ and CO from manual 6194588 GB, page 55. Check against the data badge.

The boiler has an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. Operation with natural gas requires no adjustment across the entire Wobbe index range (9.5 to 15.2 kWh/m3). For operation with LPG, the gas type needs to be changed on the control unit. No mechanical adjustments are made to the gas solenoid valve. (page 37)

CO formation as a result of incorrect burner adjustment can have serious health implications. Always carry out a CO test before and after work on gas appliances. (page 38)

Vitodens 100-W Type B1GA, 3.2 to 25 kW

Covers: Vitodens 100-W Heat Only B1GA-11, Vitodens 100-W Heat Only B1GA-16, Vitodens 100-W Heat Only B1GA-19, Vitodens 100-W Heat Only B1GA-25

GC 41-819-52, 41-819-53, 41-819-54, 41-819-55

Calling up the service menu

1. Tap the following buttons: the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Select the required menu section (e.g. "b.1" Connect with software tool).

From manual 6177061 GB, page 46.

Exiting the service menu

1. Tap the menu button (three horizontal lines) several times.
2. The system exits the service menu automatically after 30 min.

From manual 6177061 GB, page 46.

Force upper/lower heating output (test mode, b.6)

1. Ensure adequate heat transfer.
2. Press the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
3. Use the up/down arrow buttons to select "b.6" for the upper/lower heating output.
4. OK
5. Use the up/down arrow buttons to set the value. "OF" - off; "1" - Min. heating output; "2" - Max. heating output.
6. OK. Burner is operating with correspondingly adjusted heating output.

From manual 6177061 GB, page 42.

CO₂ and CO from manual 6177061 GB, page 41. Check against the data badge.

No mechanical adjustments are made to the gas solenoid valve. The electronic combustion controller adjusts the burner for optimum combustion in accordance with the prevailing gas quality. Due to factory settings, the gas pressure must not be altered from the stated values. Natural gas requires no adjustment across the Wobbe index range 9.5 to 15.2 kWh/m3. For LPG, change the gas type on the control unit and affix label "G31". (page 30)

Vitodens 100-W Type B1GA, 3.2 to 32 kW Wall mounted gas condensing boiler

Covers: Vitodens 100-W Heat Only B1GA-32

GC 41-819-56

Entering service / parameter setting mode

1. Press the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Use the up/down arrow buttons to select "b.2" for system configuration.
3. OK
4. Use the up/down arrow buttons to select the parameter for adjustment.
5. OK
6. Use the up/down arrow buttons for the required value.
7. OK

From manual 6194585, page 46.

Forcing upper / lower heating output for test mode

1. Tap the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Use the up/down arrow buttons to select "b.6" for the upper/lower heating output.
3. OK
4. Use the up/down arrow buttons to set the value: "OF" - off, "1" - Min. heating output, "2" - Max. heating output.
5. OK. Burner is operating with correspondingly adjusted heating output.

From manual 6194585, page 45.

No mechanical adjustments are made to the gas solenoid valve. (page 34)

Vitodens 100-W Type B1HA, B1KA contractors

Covers: Vitodens 100-W B1HA-19, Vitodens 100-W B1HA-26, Vitodens 100-W B1HA-30, Vitodens 100-W B1HA-35, Vitodens 100-W B1KA-26, Vitodens 100-W B1KA-30, Vitodens 100-W B1KA-35

GC 41-819-36, 41-819-37, 41-819-38, 41-819-39, 47-819-33, 47-819-34, 47-819-35

Enter filling function / Service mode

1. Turn rotary selector 'rt' anticlockwise for less than 2 s and then clockwise back into the r.h. section of the control range.
2. 'SERV', 'r' and 'w' will appear on the display.

From manual 5677 216 GB, page 30.

Force maximum and minimum heating output

1. Switch ON the ON/OFF switch.
2. Turn rotary selector 'tr' for less than 2 s fully clockwise and then back into the r.h. section of the control range ('SERV' and 'A' appear).
3. Select required maximum heating output with rotary selector 'tr' (Position 1 = lower heating output, Position 6 = upper heating output).
4. For CO2 checks: set upper heating output by turning 'tr' into r.h. section until display shows 5 bars; set lower heating output by turning 'tr' into l.h. section until display shows 1 bar.

From manual 5677 216 GB, page 35.

CO₂ and CO from manual 5677 216 GB, page 50. Check against the data badge.

The Vitodens 100-W is factory-set for natural gas. Due to factory settings, the gas pressure must not be altered from these values. (page 50)

Vitodens 100-W Type B1HC, B1KC

Covers: Vitodens 100-W B1HC-19, Vitodens 100-W B1HC-26, Vitodens 100-W B1HC-30, Vitodens 100-W B1HC-35, Vitodens 100-W B1KC-26, Vitodens 100-W B1KC-30, Vitodens 100-W B1KC-35

GC 41-819-40, 41-819-41, 41-819-42, 41-819-43, 47-819-40, 47-819-41, 47-819-42

Enter test mode / service mode

1. Tap MODE.
2. Press / repeatedly until SERV appears.
3. OK to confirm. OFF appears on the display. Test mode is not active.

From manual 5697787, page 38.

Force max & min rate (adjust burner output in test mode)

1. Use / to adjust the burner output: OFF = 0%, 20 = 20%, 40 = 40%, 60 = 60%, 80 = 80%, 100 = 100%.
2. Confirm your setting with OK. The bars stop flashing.

From manual 5697787, page 38.

Terminate test mode

1. Press / repeatedly until SERV flashes.
2. OK to confirm. The selected value flashes.
3. Press repeatedly until OFF flashes.
4. OK to confirm. When SERV disappears, test mode is terminated.

From manual 5697787, page 38.

CO₂ and CO from manual 5697787, page 37. Check against the data badge.

Due to factory settings, the gas pressure must not be altered from these values. (page )

Vitodens 100-W Type B1HF, B1KF

Covers: Vitodens 100-W B1HF-11, Vitodens 100-W B1HF-19, Vitodens 100-W B1HF-25, Vitodens 100-W B1HF-32, Vitodens 100-W B1KF-26, Vitodens 100-W B1KF-30, Vitodens 100-W B1KF-35

GC 41-819-48, 41-819-49, 41-819-50, 41-819-51, 47-819-50, 47-819-51, 47-819-52

Calling up the service menu

1. Tap the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Select the required menu section (e.g. "b.1" Connect with software tool).

From manual 6167586 GB, page 82.

Exiting the service menu

1. Tap the menu button (three horizontal lines) and "OK" simultaneously for 4 s.
2. The system exits the service menu automatically after 30 min.

From manual 6167586 GB, page 82.

No mechanical adjustments are made to the gas solenoid valve. The boiler has an electronic combustion controller that adjusts the burner automatically for the prevailing gas quality, so no adjustment is required across the Wobbe index range 9.5 to 15.2 kWh/m3 for natural gas. Due to factory settings, the gas pressure must not be altered from the stated values. (page 44)

CO formation as a result of incorrect burner adjustment can have serious health implications. Always carry out a CO test before and after work on gas appliances. (page 45)

Vitodens 100-W Type BPJA, 6.5 to 25.0 kW - contractors

Covers: Vitodens 100-W BPJA 21kW P25, Vitodens 100-W BPJA 25kW P29

GC 47-819-26, 47-819-27

Checking CO2 content (service mode, upper/lower heating output)

1. Connect a flue gas analyser at flue gas port A on the boiler flue connection.
2. Start the boiler and check for leaks.
3. Turn rotary selector "tr" for less than 2 s fully clockwise and then back into its control range on the right. The display shows "SERV", "A" and the boiler water temperature.
4. Adjust the upper heating output: Turn rotary selector "tr" to the control range on the right until the display shows 5 bars for the upper heating output.
5. Check the CO2 content for the upper heating output. The CO2 content must be between 7.0 and 10.5 %.
6. Adjust the lower heating output: Turn rotary selector "tr" to the control range on the left until the display shows 1 bar for the lower heating output.
7. Check the CO2 content for the lower heating output. The CO2 content must be between 0.3 and 0.9 % below the value for the upper heating output.
8. If the CO2 content is outside the given range, check the flue gas/ventilation air system for tightness; remedy any leaks. Replace gas train if required.
9. Shut down the boiler, remove the flue gas analyser and cap flue gas aperture A.
10. Turn both rotary selectors "tw" and "tr" to their respective original positions.

From manual 5609 913 GB, page 26.

CO₂ and CO from manual 5609 913 GB, page 26. Check against the data badge.

Carry out a CO test before and after work on gas appliances. Due to the factory settings, the gas pressure must not be altered from these values. To change gas type, change the gas nozzle (gas restrictor) and switch the gas type in the control unit. Operation with natural gas is "0" and LPG is "1". If the CO2 content is outside the given range, check the flue gas/ventilation air system for tightness and remedy any leaks. Replace the gas train if required. (page 26)

Vitodens 100-W Type WB1A contractors (Natural gas version)

Covers: Vitodens 100-W WB1A 13kW

GC 41-819-13

Setting CO2 – upper and lower heat output (forced rate)

1. Remove plug from connection A and connect the flue gas analyser
2. Open the gas shut-off valve, start the boiler and create a heat demand.
3. Set the upper heat output. Turn rotary selector "tr" for less than 2 s clockwise to its end stop and then back into the correct control range.
4. Check the CO2 content. If the value lies between 8.5 - 9.1%, continue with point 5. If outside, adjust the CO2 value at screw B at the gas train. Increasing the CO2 value: Turning anti-clockwise
5. Set the lower heat output. Turn rotary selector "tr" towards the clockwise control range.
6. Check the CO2 content. If the value lies between 8.5 - 9.1%, continue with point 7. If outside, remove cap C and adjust the CO2 value at screw at the gas train. Increasing the CO2 value: Turning anti-clockwise
7. Turn rotary selector "tr" for less than 2 s clockwise to its end stop and then back into the control range. The function will also be terminated automatically after 30 min.

From manual 5592 805 GB, page 47.

CO₂ and CO from manual 5592 805 GB, page 46. Check against the data badge.

The Vitodens 100-W is set at the factory for natural gas H. During commissioning/maintenance, the CO2 setting can be checked and changed. Danger: CO formation, as a result of incorrect burner adjustment, can lead to severe health problems. Carry out a CO test prior to, and after, work on gas equipment. (page 46)

Vitodens 100-W Type WB1B

Covers: Vitodens 100 W WB1B 13kW Regular Boiler open vent, Vitodens 100 W WB1B 16kW Regular Boiler open vent, Vitodens 100 W WB1B 19kW Regular Boiler open vent, Vitodens 100 W WB1B 26kW Regular Boiler open vent

GC 41-819-21, 41-819-22, 41-819-23, 41-819-24

Enter Service Mode (Checking CO2)

1. Start the boiler.
2. Turn rotary selector tr clockwise for less than 2 s and then anticlockwise back to the control range on the right.
3. The display shows SERV and the boiler water temperature is shown.

From manual 5368 662 GB, page 18.

Force Upper and Lower Output

1. Adjust upper output: Turn rotary selector tr to the control range on the right. The display shows 5 bars for upper output.
2. Adjust lower output: Turn rotary selector tr to the left control range. The display shows 1 bar for lower output.

From manual 5368 662 GB, page 19.

Enter Service Mode for Gas Type Conversion

1. Turn ON/OFF switch ON.
2. Simultaneously turn rotary selectors à and tr to their central position. SERV appears on the display.
3. Turn rotary selector tr anticlockwise as far as it will go within 2 s. A appears on the display and the set value flashes.
4. Adjust the control unit to natural gas or LPG by turning the left rotary selector à (0 for natural gas, 1 for LPG).
5. Do not adjust the rotary selectors for 15 s to save the set operating mode.
6. Switch ON/OFF switch off and on again.

From manual 5368 662 GB, page 37.

CO₂ and CO from manual 5368 662 GB, page 18. Check against the data badge.

Because of factory settings, the gas pressure must not be altered from these settings. (page )

Vitodens 100-W Type WB1B, 9.0 to 35.0 kW - contractors

Covers: Vitodens 100 W WB1B 26kW System Boiler, Vitodens 100 W WB1B 30kW Combi Boiler, Vitodens 100 W WB1B 30kW System Boiler, Vitodens 100 W WB1B 35kW Combi Boiler, Vitodens 100 W WB1B 35kW System Boiler

GC 41-819-12, 41-819-13, 41-819-14, 47-819-19, 47-819-20

Enter service mode

1. Simultaneously turn rotary selectors (thermometer with tap symbol) and (thermometer with radiator symbol) to their central position. "SERV" appears on the display.
2. Within 2 s turn rotary selector (radiator with thermometer symbol) to the top right area. The radiator symbol and the set value flash on the display.
3. Adjust the control unit to stage 1 or 2 by turning rotary selector (thermometer with tap symbol). The display shows "1" for operation with stage 1 or "2" for operation with stage 2.
4. Do not adjust the rotary selectors for 15 s. The set operating mode is then saved and the control unit returns to standard mode.

From manual 5366 836 GB, page 21.

Force upper/lower output (for CO2 check)

1. Connect a flue gas analyser at flue gas port A on the boiler flue connection.
2. Start the boiler.
3. Turn rotary selector "tr" clockwise for less than 2 s and then anticlockwise back to the control range on the right. The display shows "SERV" and the boiler water temperature is shown.
4. Adjust the upper output: Turn rotary selector "tr" to the control range on the right. The display shows 5 bars for upper output.
5. Adjust the lower output: Turn rotary selector "tr" to the left control range. The display shows 1 bar for lower output.
6. Shut the boiler down, remove flue gas analyser and close flue gas port A.

From manual 5366 836 GB, page 22.

CO₂ and CO from manual 5366 836 GB, page 22. Check against the data badge.

Vitodens 100-W is factory-set for natural gas. If the actual CO2 or O2 and CO values deviate from the stated range, check the balanced flue systems for leaks. If flue installation is OK, change the gas valve. Because of factory settings, the gas pressure must not be altered from these settings. (page 22)

Vitodens 100-W Type WB1C, 6.5 to 35.0 kW - contractors

Covers: Vitodens 100-W WB1C 19kW System Boiler, Vitodens 100-W WB1C 26kW Combi Boiler, Vitodens 100-W WB1C 26kW System Boiler, Vitodens 100-W WB1C 30kW Combi Boiler, Vitodens 100-W WB1C 30kW System Boiler, Vitodens 100-W WB1C 35kW Combi Boiler, Vitodens 100-W WB1C 35kW System Boiler

GC 41-819-26, 41-819-27, 41-819-28, 41-819-29, 47-819-20, 47-819-21, 47-819-22

Enter service mode (central position)

1. Turn on the ON/OFF switch.
2. Turn both rotary selectors "tw" and "tr" simultaneously into their respective central positions. "SERV" appears on the display.

From manual 5609 059 GB, page 31.

Force upper/lower heating output for CO2 check

1. Adjust the upper heating output: Turn rotary selector "thermometer/radiator symbol" to the control range on the right until the display shows 5 bars for the upper heating output.
2. Check the CO2 content for the upper heating output. The CO2 content must be between 7.0 and 10.5 %.
3. Adjust the lower heating output: Turn rotary selector "thermometer/radiator symbol" to the control range on the left until the display shows 1 bar for the lower heating output.
4. Check the CO2 content for the lower heating output. The CO2 content must be between 0.3 and 0.9 % below the value for the upper heating output.
5. If the CO2 content is within the given range, continue with point 10. If the CO2 content is outside the given range, check the flue gas/ventilation air system for tightness; remedy any leaks. Replace gas train if required.
6. Check the CO2 content for upper and lower heating output again.
7. Shut down the boiler, remove the flue gas analyser and cap flue gas aperture A.

From manual 5609 059 GB, page 37.

Reducing max. heating output (service mode A)

1. Turn on the ON/OFF switch.
2. Turn rotary selector "tr" for less than 2 s fully clockwise and then back into its control range on the right. "SERV" and "A" appear on the display.
3. Select the required max. heating output with rotary selector "tr".
4. Test selected heating output by measuring the gas throughput.
5. Transfer: turn rotary selector "tw" for less than 2 s fully clockwise and then back into its control range on the right.
6. Shut down the boiler.

From manual 5609 059 GB, page 33.

CO₂ and CO from manual 5609 059 GB, page 36. Check against the data badge.

Vitodens 100-W is factory-set for natural gas. If the actual CO2 or O2 and CO values deviate from the stated range, check the balanced flue systems for leaks. If flue installation is o.k., change the gas valve. Static pressure set value: max. 57.5 mbar. Max. test pressure 150 mbar. Due to the factory settings, the gas pressure must not be altered from these values. Danger: CO build-up as a result of incorrect burner adjustment can have serious health implications. Carry out a CO test before and after work on gas appliances. (page 36)

Vitodens 111-W

Covers: Vitodens 111-W B1LF 19kW, Vitodens 111-W B1LF 25kW, Vitodens 111-W B1LF 32kW

Entering Service Mode / Commissioning Assistant

1. Press the list and OK buttons simultaneously for approx. 4 s.
2. Use the up and down arrow keys to select 'b.5' and confirm with 'OK'.
3. Press the list button for 4 s to start the commissioning assistant.

From manual 6167585, page 30.

Forcing Max & Min Rate (Upper/Lower Heating Output)

1. Press the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Use the up/down arrow buttons (^/v) to select "b.6" for the upper/lower heating output.
3. OK
4. Use the up/down arrow buttons (^/v) to set the value: "0" - OFF, "1" - Min. heating output, "2" - Max. heating output.
5. OK

From manual 6167585, page 53.

CO₂ and CO from manual 6167585, page 52. Check against the data badge.

No mechanical adjustments are made to the gas solenoid valve. The electronic combustion controller automatically adjusts the burner for optimum combustion. (page 37)

Vitodens 111-W Type B1LA, 6.5 to 35.0 kW - contractors

Covers: Vitodens 111-W B1LA 26kW, Vitodens 111-W B1LA 35kW

Enter service mode / select max. heating output (forcing upper/lower output for CO2 check)

1. Turn rotary selector "tr" fully clockwise, until the display shows "SERV".
2. Within 2 s return the rotary selector to the r.h. control range. The display shows "A".
3. Adjust the upper heating output: Turn rotary selector "tr" fully clockwise, until the display shows 5 bars for the upper heating output.
4. Adjust the lower heating output: Turn rotary selector "tr" fully anti-clockwise, until the display shows 1 bar for the lower heating output.

From manual 5618 648 GB, page 31.

Exit service mode after CO2 check

1. Shut the boiler down, remove flue gas analyser and close flue gas port A.
2. Turn both rotary selectors "tw" and "rt" simultaneously into their original positions.

From manual 5618 648 GB, page 32.

Reducing the max. heating output

1. Turn on the ON/OFF switch. (The heating output can only be changed with the burner in operation.)
2. Turn rotary selector "tr" fully clockwise, until the display shows "SERV". Within 2 s return the rotary selector to the r.h. control range. The display shows "A".
3. Select the required max. heating output with rotary selector "tr". Position 1 (1 bar) = lower heating output. Position 6 (5 bars) = upper heating output.
4. Test selected heating output by measuring the gas throughput.
5. Transfer selected heating output: Turn rotary selector "tw" for less than 2 s fully clockwise and then back into the r.h. control range. During the transfer, "– . – . –" will be displayed.
6. Shut down the boiler.

From manual 5618 648 GB, page 28.

CO₂ and CO from manual 5618 648 GB, page 31. Check against the data badge.

The Vitodens 111-W is factory-set for natural gas. Conversion to LPG requires changing the gas nozzle (gas conversion kit) and converting the gas type in the control unit. If the actual CO2 or O2 and CO values deviate from the stated range, check the balanced flue systems for leaks. If flue installation is OK, change the gas valve. Replace gas train if required. Due to the factory settings, the gas pressure must not be altered from these values. (page 31)

Danger: CO build-up as a result of incorrect burner adjustment can have serious health implications. Carry out a CO test before and after work on gas appliances. (page 25)

Vitodens 111-W Type B1LB

Covers: Vitodens 111-W B1LB 26kW, Vitodens 111-W B1LB 35kW

GC 47-819-36, 47-819-37

Entering service mode (filling function / general service mode)

1. Turn rotary selector 'rt' fully anti-clockwise, until the display shows 'SERV'.
2. Within 2 s return the rotary selector to the r.h. control range.
3. The display shows 'r' and 'w' (or 'SERV').

From manual 5677 219 GB, page 27.

Forcing max and min rate (upper and lower heating output adjustment)

1. Turn rotary selector 'tr' fully clockwise, until the display shows 'SERV'.
2. Within 2 s return the rotary selector to the r.h. control range. The display shows 'A'.
3. To adjust upper heating output: Turn rotary selector 'tr' fully clockwise until the display shows 5 bars for the upper heating output.
4. To adjust lower heating output: Turn rotary selector 'tr' fully anti-clockwise until the display shows 1 bar for the lower heating output.

From manual 5677 219 GB, page 40.

CO₂ and CO from manual 5677 219 GB, page 43. Check against the data badge.

Due to factory settings, the gas pressure must not be altered from these values. (page 92)

Vitodens 111-W, Type B1LD, 4.7 to 35.0 kW - contractors

Covers: Vitodens 111-W B1LD 26kW, Vitodens 111-W B1LD 35kW

GC 47-819-43, 47-819-44

Enter service/test mode and force burner output (20/40/60/80/100 %)

1. Tap MODE.
2. / repeatedly until "SERV" appears.
3. OK to confirm. OFF appears on the display. Test mode is not active.
4. Use / to adjust the burner output: 20 = 20 %, 40 = 40 %, 60 = 60 %, 80 = 80 %, 100 = 100 %.
5. Confirm your setting with OK. The bars stop flashing.
6. Check the CO2 content for the upper heating output (100 %).
7. Check the CO2 content for the lower heating output (20 %).

From manual 5697789 GB, page 34.

Exit service/test mode

1. / repeatedly until "SERV" flashes.
2. OK to confirm. The selected value flashes.
3. repeatedly until OFF flashes.
4. OK to confirm. When "SERV" disappears, test mode is terminated.

From manual 5697789 GB, page 34.

CO₂ and CO from manual 5697789 GB, page 33. Check against the data badge.

The Vitodens 111-W is factory-set for natural gas (G20). If the actual CO2 or O2 and CO values deviate from the stated range, check the balanced flue system for leaks. If the flue installation is OK, change the gas valve. Due to factory settings, the gas pressure must not be altered from these values. (page 33)

Danger: CO formation as a result of incorrect burner adjustment can have serious health implications. Check the CO content before and after carrying out work on gas appliances. (page 26)

Vitodens 200-W Type B2HA, B2KA, 3.2 to 35 kW - contractors

Covers: Vitodens 200-W B2HA-19, Vitodens 200-W B2HA-26, Vitodens 200-W B2HA-30, Vitodens 200-W B2HA-35, Vitodens 200-W B2KA-26, Vitodens 200-W B2KA-30, Vitodens 200-W B2KA-35

GC 41-819-32, 41-819-33, 41-819-34, 41-819-35, 47-819-28, 47-819-29, 47-819-30

Enter service menu (weather-compensated control unit)

1. Press OK and å simultaneously for approx. 4 s.
2. Select the required menu: Diagnosis, Actuator test, Coding level 1, Coding level 2, Fault history, Service functions or Terminate service?

From manual 5772 909 GB, page 100.

Enter service menu (constant temperature control unit)

1. Press OK and å simultaneously for approx. 4 s. "Ü" flashes on the display.
2. Select the required function.

From manual 5772 909 GB, page 100.

Exit service level (weather-compensated)

1. Select "Terminate service?".
2. Select "Yes".
3. Confirm with OK.
4. Note: the system exits the service level automatically after 30 min.

From manual 5772 909 GB, page 100.

Exit service level (constant temperature)

1. Select "Serv" 7 with Ú.
2. Confirm with OK. "OFF" flashes.
3. Confirm with OK.
4. Note: the system exits the service level automatically after 30 min.

From manual 5772 909 GB, page 100.

Force lower / upper heating output (weather-compensated)

1. Press OK and å simultaneously for approx. 4 s.
2. Select "Actuator test".
3. Lower heating output: select "Base load OFF". Then "Base load ON" appears and the burner operates at its lower heating output.
4. Upper heating output: select "Full load OFF". Then "Full load ON" appears and the burner operates at its upper heating output.
5. Ending output selection: press ä.

From manual 5772 909 GB, page 48.

Force lower / upper heating output (constant temperature)

1. Weather-compensated control unit, Service menu: 1. Press OK and the menu icon (three horizontal lines with a column of dots) simultaneously for approx. 4 s.
2. Weather-compensated control unit: 2. Select "Actuator test"
3. Constant temperature control unit, Service menu: 1. Press OK and the menu icon (three horizontal lines with a column of dots) simultaneously for approx. 4 s.
4. Constant temperature control unit: 2. Select the "actuator test" icon (a rectangle with a diagonal line through it, shown in quotation marks) with the right-pointing triangle (▶) and confirm with OK. The display shows "I" and "ON" flashes.

From manual 5772 909 GB, page 48.

Max. heating output setting (weather-compensated)

1. Press OK and å simultaneously for approx. 4 s.
2. Select "Service functions".
3. Select "Max. output".
4. "Change?" Select "Yes". A value is shown on the display; in the delivered condition this represents 100 % of rated heating output.
5. Set the required value.

From manual 5772 909 GB, page 39.

CO₂ and CO from manual 5772 909 GB, page 47. Check against the data badge.

Gas valve: the manual states that due to the factory settings, the gas pressure must not be altered from the values given. The boiler has an electronic combustion controller that adjusts the burner automatically. For LPG, set adjusting screw A on the gas train to "2" and set coding address 82:1 (requires 11:9 first). Danger: CO build-up as a result of incorrect burner adjustment can have serious health implications. Carry out a CO test before and after work on gas appliances. (page 35)

Vitodens 200-W Type B2HF, B2KF, 1.9 to 32 kW

Covers: Vitodens 200-W B2HF-11, Vitodens 200-W B2HF-19, Vitodens 200-W B2HF-25, Vitodens 200-W B2HF-32, Vitodens 200-W B2KF-19, Vitodens 200-W B2KF-25, Vitodens 200-W B2KF-32

Calling up the service menu

1. Tap "≡" (menu button)
2. "Service"
3. Enter password "viservice".
4. Use ✓ to confirm.
5. Select the required menu section.

From manual 5593201 GB, page 80.

Selecting the upper/lower heating output (forcing min/max rate)

1. Ensure adequate heat transfer.
2. Tap the menu button.
3. "Service"
4. Enter password "viservice".
5. Use ✓ to confirm.
6. "Actuator test"
7. Use ✓ to confirm.
8. Select "Primary circuit pump, set speed" and adjust the set value to the maximum value.
9. Select "Burner modulation, set value".
10. Set the lower heating output: Select "Minimum heating output". The burner now operates at the lower heating output.
11. Set the upper heating output: Select "Maximum heating output". The burner now operates at the upper heating output.
12. End output selection.

From manual 5593201 GB, page 61.

CO₂ and CO from manual 5593201 GB, page 61. Check against the data badge.

The boiler is equipped with an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. For natural gas no adjustment is required across the entire Wobbe index range 9.5 to 15.2 kWh/m3 (34.2 to 54.7 MJ/m3). Mechanical conversion on the gas solenoid valve is not possible. Due to factory settings, the gas pressure must not be altered from these values. (page 44)

CO formation as a result of incorrect burner adjustment can have serious health implications. Always carry out a CO test before and after work on gas appliances. (page 46)

Vitodens 200-W Type B2HH, B2KH, 1.9 to 32 kW - contractors

Covers: Vitodens 200-W B2HH-11, Vitodens 200-W B2HH-19, Vitodens 200-W B2HH-25, Vitodens 200-W B2HH-32, Vitodens 200-W B2KH-19, Vitodens 200-W B2KH-25, Vitodens 200-W B2KH-32

Enter service menu

1. Tap the following buttons: 1. menu button
2. "Service"
3. Enter password "viservice".
4. Confirm with the tick button.
5. Select the required menu section.

From manual 6219526 GB, page 67.

Exit service menu

1. Tap the following buttons: "Exit service" or the back button (return arrow symbol).
2. Note: If no further entries are made, the service menu is exited automatically after 30 min.

From manual 6219526 GB, page 68.

Force minimum / maximum heating output (Actuator test)

1. Note: Ensure adequate heat transfer.
2. Tap the menu button (three horizontal lines).
3. "Service"
4. Enter password "viservice".
5. Confirm with the tick button.
6. "Actuator test"
7. Confirm with the tick button.
8. Select "Burner modulation, set value". The boiler circuit pump operates automatically at 100 %.
9. Set the lower heating output: Select "Minimum heating output". The burner now operates at the lower heating output.
10. Set the upper heating output: Select "Maximum heating output". The burner now operates at the upper heating output.
11. End output selection: press the back arrow button or the home/service symbol button.

From manual 6219526 GB, page 64.

CO₂ and CO from manual 6219526 GB, page 63. Check against the data badge.

Due to factory settings, the gas pressure must not be altered from these values. Converting to LPG: no mechanical adjustments are made to the gas solenoid valve; change the gas type on the control unit and affix the label "G31" adjacent to the type plate. (page 92)

CO formation as a result of incorrect burner adjustment can have serious health implications. Always carry out a CO test before and after work on gas appliances. (page 47)

Vitodens 200-W Type WB2C

Covers: Vitodens 200-W WB2C 19kW System, Vitodens 200-W WB2C 26kW Combi, Vitodens 200-W WB2C 26kW System, Vitodens 200-W WB2C 30kW Combi, Vitodens 200-W WB2C 30kW System, Vitodens 200-W WB2C 35kW Combi, Vitodens 200-W WB2C 35kW System

GC 41-819-14, 41-819-15, 41-819-16, 41-819-17, 47-819-09, 47-819-10, 47-819-11

Enter service level – weather-compensated control unit

1. Press OK and å simultaneously for approx. 4 s.

From manual 5692 857 GB, page 81.

Enter service level – constant temperature control unit

1. Press OK and å simultaneously for approx. 4 s. "Ü" flashes on the display.
2. Select required function.

From manual 5692 857 GB, page 81.

Exit service level – weather-compensated control unit

1. Select "Terminate service?".
2. Select "Yes".
3. Confirm with OK.
4. The service level is automatically exited after 30 minutes.

From manual 5692 857 GB, page 81.

Exit service level – constant temperature control unit

1. Use Ú to select "Serv" 7.
2. Confirm with OK. "OFF" flashes.
3. Confirm with OK.
4. The service level is automatically exited after 30 minutes.

From manual 5692 857 GB, page 82.

Select lower/upper output (forced min/max rate) – weather-compensated control unit

1. Press OK and å simultaneously for approx. 4 s.
2. "Actuator test"
3. Select the lower output: Select "Base load ON" and confirm with OK.
4. Select the upper output: Select "Full load ON" and confirm with OK.
5. Ending output selection: Press ä.

From manual 5692 857 GB, page 26.

Select lower/upper output (forced min/max rate) – constant temperature control unit

1. Press OK and the menu button (three horizontal lines) simultaneously for approx. 4 s.
2. Select the right arrow button, then the "actuator test" symbol (crossed-out symbol in quotes), and confirm with OK. The display shows "I" and "on" flashes.
3. Select the lower output: Press OK, "on" will be displayed permanently.
4. Select the upper output: Press the back button (return arrow).
5. Press the right arrow button to select "2", "on" flashes.
6. Press OK, "on" will be displayed constantly.
7. Ending output selection: Press the back button (return arrow).

From manual 5692 857 GB, page 26.

CO₂ and CO from manual 5692 857 GB, page 25. Check against the data badge.

The boiler has an electronic combustion controller that adjusts the burner for optimum combustion according to the prevailing gas quality. For natural gas no adjustment is required across the entire Wobbe index range (9.5 to 15.2 kWh/m3). Due to the factory settings, the gas pressure must not be altered from the connection values given in the Specification. (page 147)

CO build-up as a result of incorrect burner adjustment can have serious health implications. Carry out a CO test before and after work on gas appliances. (page 15)

Vitodens 200-W, Type B2HA, 49 and 60 kW - contractors

Covers: Vitodens 200-W B2HA-49, Vitodens 200-W B2HA-60

Enter service mode - weather-compensated control unit

1. Press OK and å simultaneously for approx. 4 s.
2. Select required menu.

From manual 5817254 GB, page 75.

Exit service mode - weather-compensated control unit

1. Select "Terminate service?".
2. Select "Yes".
3. Confirm with OK.

From manual 5817254 GB, page 75.

Enter service mode - constant temperature control unit

1. Press OK and å simultaneously for approx. 4 s. "Ü" flashes on the display.
2. Select required function.

From manual 5817254 GB, page 75.

Exit service mode - constant temperature control unit

1. Select "Serv" 7 with Ú.
2. Confirm with OK. "OFF" flashes.
3. Confirm with OK.

From manual 5817254 GB, page 75.

Force lower / upper heating output - weather-compensated control unit

1. Press OK and å simultaneously for approx. 4 s.
2. "Actuator test"
3. Select the lower heating output: Select "Base load OFF". Then "Base load ON" appears and the burner runs at its lower heating output.
4. Select the upper heating output: Select "Full load OFF". Then "Full load ON" appears and the burner runs at its upper heating output.
5. End output selection: Press ä.

From manual 5817254 GB, page 43.

Force lower / upper heating output - constant temperature control unit

1. Under "Constant temperature control unit" > "Service menu", step 1: Press OK and the menu icon (three horizontal lines with three dots beside them) simultaneously for approx. 4 s.
2. Step 2: Use the right-pointing triangle (▶) to select the service symbol (a boxed symbol shown in quotation marks, resembling a crossed-out rectangle) and confirm with OK. The display shows "I" and "ON" flashes.
3. Step 3: Select the lower heating output: Press OK, "ON" will be displayed constantly.
4. Step 4 (continued in the right column): Select the upper heating output: Press the back arrow (curved return arrow).
5. Step 5: Select "2" with the right-pointing triangle (▶); "ON" flashes.
6. Step 6: Press OK; "ON" will be displayed constantly.
7. Step 7: End output selection: Press the back arrow (curved return arrow).

From manual 5817254 GB, page 44.

CO₂ and CO from manual 5817254 GB, page 43. Check against the data badge.

Boiler has an electronic combustion controller that adjusts the burner automatically for the prevailing gas quality. No adjustment is required across the Wobbe index range 9.5 to 15.2 kWh/m3 (34.2 to 54.7 MJ/m3) for natural gas. For LPG the burner must be converted: set adjusting screw A on the gas train to "2" and set coding address 82 to 1 (access via code 11:9). Due to factory settings, the gas pressure must not be altered from the values specified. (page 34)

CO formation as a result of incorrect burner adjustment can have serious health implications. Check the CO content before and after carrying out work on gas appliances. (page 35)

Vitodens 200-W, Type B2HB, B2KB, 1.8 to 35 kW - contractors

Covers: Vitodens 200-W B2HB-19, Vitodens 200-W B2HB-26, Vitodens 200-W B2HB-30, Vitodens 200-W B2HB-35, Vitodens 200-W B2KB-26, Vitodens 200-W B2KB-30, Vitodens 200-W B2KB-35

Calling up / exiting the service menu

1. Press OK and å simultaneously for approx. 4 s. "Ü" flashes on the display.
2. Select required function.
3. To exit: Select "Serv" 7 with Ú.
4. Confirm with OK. "OFF" flashes.
5. Confirm with OK.
6. The system exits the service level automatically after 30 min.

From manual 5792013 GB/en, page 57.

Selecting lower / upper heating output (force min / max for combustion check)

1. Service menu
2. Press OK and the menu icon (three horizontal lines with a vertical dotted line) simultaneously for approx. 4 s.
3. Select the heating output icon (a box with a diagonal arrow) with the right-pointing triangle (▶) and confirm with OK. The display shows "I" and "ON" flashes.
4. Selecting the lower heating output: press OK, "ON" will be displayed constantly.
5. Selecting the upper heating output: press the back icon (curved return arrow).
6. Select "2" with the right-pointing triangle (▶), "ON" flashes.
7. Press OK, "ON" will be displayed constantly.
8. Ending output selection: press the back icon (curved return arrow).

From manual 5792013 GB/en, page 40.

Setting the max. heating output

1. Press OK and å simultaneously for approx. 4 s.
2. Select "3" with Ú and confirm with OK. A value flashes on the display (e.g. "85") and "A" appears. In the delivered condition, this value represents 100 % of rated heating output.
3. Select required value and confirm with OK.

From manual 5792013 GB/en, page 32.

CO₂ and CO from manual 5792013 GB/en, page 39. Check against the data badge.

Due to factory settings, the gas pressure must not be altered from these values. The boiler has an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. For natural gas no adjustment is required across the entire Wobbe index range 9.5 to 15.2 kWh/m3 (34.2 to 54.7 MJ/m3). For operation with LPG the burner must be converted via coding address 82. CO formation as a result of incorrect burner adjustment can have serious health implications. Always carry out a CO test before and after work on gas appliances. (page 116)

Vitodens 200-W, Type B2HE, B2KE, 1.9 to 32 kW - contractors

Covers: Vitodens 200-W B2HE-11, Vitodens 200-W B2HE-19, Vitodens 200-W B2HE-25, Vitodens 200-W B2HE-32, Vitodens 200-W B2KE-19, Vitodens 200-W B2KE-25, Vitodens 200-W B2KE-32

Enter service menu

1. Tap the menu button
2. Select "Service"
3. Enter password "viservice"
4. Use OK to confirm
5. Select the required menu section

From manual 6131268 GB, page 78.

Exit service menu

1. Tap "Exit service menu" or the back arrow button (curved return arrow).
2. Note: The system exits the service menu automatically after 30 min.

From manual 6131268 GB, page 78.

Force lower/upper heating output (for combustion check)

1. Note: Ensure adequate heat transfer.
2. Tap the following buttons:
3. The menu button (three horizontal lines)
4. "Service"
5. Enter password "viservice".
6. Use the tick (checkmark) button to confirm.
7. "Actuator and sensor test"
8. Use the tick (checkmark) button to confirm.
9. Select "Primary circuit pump, set speed" and adjust the set value to the maximum value.
10. Select "Burner modulation, set value".

From manual 6131268 GB, page 60.

CO₂ and CO from manual 6131268 GB, page 60. Check against the data badge.

The boiler is equipped with an electronic combustion controller that adjusts the burner for optimum combustion in accordance with the prevailing gas quality. For operation with natural gas, no adjustment is therefore required across the entire Wobbe index range (9.5 to 15.2 kWh/m3). Mechanical conversion on the gas train is not possible. For LPG or natural gas M, the gas type is changed on the control unit. Due to factory settings, the gas pressure must not be altered from these values. (page 42)

Danger: CO formation as a result of incorrect burner adjustment can have serious health implications. Always carry out a CO test before and after work on gas appliances. (page 44)

Vitodens 222-F, Type B2TF, 1.9 to 32 kW - contractors

Covers: Vitodens 222-F B2TF-19, Vitodens 222-F B2TF-25, Vitodens 222-F B2TF-32

Calling up the service menu

1. Tap the menu button (three horizontal lines) and OK simultaneously for approx. 4 s, then release.
2. Select the required menu section, e.g. "Connect with software tool".

From manual 5593275 GB, page 82.

Setting the upper/lower heating output (force min/max rate)

1. Press OK.
2. Press the menu button (three horizontal lines).
3. Use the up/down arrow buttons to select the "Boiler" group.
4. Press OK.
5. Use the up/down arrow buttons to select the "Burner modulation target".
6. Press OK.
7. Set the lower heating output: select "Minimum heating output". Confirm with "OK". The burner now operates at the lower heating output.
8. Set the upper heating output: select "Maximum heating output". Confirm with "OK". The burner now operates at the upper heating output.

From manual 5593275 GB, page 62.

CO₂ and CO from manual 5593275 GB, page 61. Check against the data badge.

The boiler has an electronic combustion controller that adjusts the burner automatically; no mechanical adjustments are made to the gas solenoid valve (including for LPG conversion, which is done on the control unit). Due to factory settings, the gas pressure must not be altered from these values. (page 41)

CO formation as a result of incorrect burner adjustment can have serious health implications. Carry out a CO test before and after work on gas appliances. (page 42)

Vitodens 222-F, Type B2TH, 1.9 to 32 kW - contractors

Covers: Vitodens 222-F B2TH-19, Vitodens 222-F B2TH-25, Vitodens 222-F B2TH-32

Enter service menu

1. Tap the menu button (three horizontal lines)
2. Tap "Service"
3. Enter password "viservice"
4. Confirm with the tick button (✓)
5. Select the required menu section

From manual 6219766 GB, page 69.

Force lower/upper heating output (Actuator test)

1. Tap the menu button
2. "Service"
3. Enter password "viservice"
4. Confirm
5. "Actuator test"
6. Confirm
7. Select "Burner modulation, set value". The boiler circuit pump operates automatically at 100 %.
8. Lower heating output: Select "Minimum heating output". The burner now operates at the lower heating output.
9. Upper heating output: Select "Maximum heating output". The burner now operates at the upper heating output.
10. End output selection

From manual 6219766 GB, page 64.

Exit service menu

1. Tap the following buttons: "Exit service" or the back button (return arrow symbol).
2. Note: If no further entries are made, the service menu is exited automatically after 30 min.

From manual 6219766 GB, page 70.

CO₂ and CO from manual 6219766 GB, page 64. Check against the data badge.

The boiler has an electronic combustion controller that adjusts the burner automatically for the prevailing gas quality; no mechanical adjustments are made to the gas solenoid valve (also when converting to LPG, where the gas type is changed on the control unit). Gas is converted via the commissioning assistant and label "G31" is affixed next to the type plate. No separate CO2 adjustment is provided; combustion values are only checked at lower and upper heating output. (page 43)

CO formation as a result of incorrect burner adjustment can have serious health implications. Carry out a CO test before and after work on gas appliances. (page 44)

Vitodens 242-F Type FB2B, 4.8 to 26 kW - contractors

Covers: Vitodens 242-F FB2B 19kW Combi with Store, Vitodens 242-F FB2B 26kW Combi with Store

GC 47-819-18, 47-819-19

Enter service menu

1. Press OK and å simultaneously for approx. 4 s.

From manual 5412 755 GB, page 98.

Force lower (base load) and upper (full load) output

1. Press OK and the menu button (three horizontal lines) simultaneously for approx. 4 s.
2. "Actuator test"
3. Select the lower output: Select "Base load" "ON" and confirm with OK.
4. Select the upper output: Select "Full load" "ON" and confirm with OK.

From manual 5412 755 GB, page 51.

CO₂ and CO from manual 5412 755 GB, page 50. Check against the data badge.

Because of factory settings, the gas pressure must not be altered from these values. Carry out a CO test prior to and after work on gas equipment. CO build-up as a result of an incorrect burner setup can have serious health implications. (page 160)

Vitodens 300 Type WB3A, 49 and 66 kW

Covers: Vitodens 300 WB3A 49kW, Vitodens 300 WB3A 66kW

Select lower/upper rated output (for CO2 check)

1. Constant temperature control units: Press both keys 9 and d simultaneously, until the display shows 1 (lower rated output).
2. Weather-compensated control units: Press both keys 9 and d simultaneously until the display shows "Relay test"; with a/b select "Basic load" (lower output).
3. Set the upper rated output: constant temperature units - with a/b select 2; weather-compensated units - with a/b select "Full load".
4. After testing, press d.

From manual 5692 550 GB, page 31.

Limit max. output (heating mode)

1. Start up boiler.
2. Press both K and F simultaneously until 100 flashes on the display, (equals 100 % of the rated output) and A appears.
3. With a/b select the required value in % of rated output as max. output.
4. Confirm the set value with d.
5. Record the settings for max. output on the additional type plate included with the technical documentation. Affix the type plate next to the original type plate on top of the boiler.

From manual 5692 550 GB, page 32.

CO₂ and CO from manual 5692 550 GB, page 31. Check against the data badge.

Vitodens 300 is factory-set for natural gas E or LPG P. The MatriX burner is preset for the entire gas group and requires no further setting or adjustment. Gas pressure must not be altered from the factory settings. Measure the CO value before and after any work on gas equipment. (page 30)

Vitodens 333 Type WS3A, 6.6 to 26.0 kW –

Covers: Vitodens 333 WS3A

Select lower/upper rated output (CO2 check) - constant temperature control unit

1. Press both keys 9 and d simultaneously until the display shows 1 (lower rated output).
2. With a/b in the display, select 2 for upper rated output.
3. After testing, press d.

From manual 5692 548 GB, page 32.

Select lower/upper rated output (CO2 check) - weather-compensated control unit

1. Press both keys 9 and d simultaneously until the display shows Relay test.
2. With a/b in the display, select Basic load (lower rated output).
3. With a/b in the display, select Full load (upper rated output).
4. After testing, press d.

From manual 5692 548 GB, page 32.

Relay test (force output) - exit

1. Press K and d simultaneously for approx. 2 seconds. Relay test is activated.
2. Select the relay outputs with a and b.
3. Press d. Relay test is completed.

From manual 5692 548 GB, page 83.

CO₂ and CO from manual 5692 548 GB, page 31. Check against the data badge.

Because of factory settings, the gas pressure must not be altered from these values. Danger: Higher CO emissions can lead to poisoning. Measure the CO value before and after any work on gas equipment. Gas escaping from the test nipple leads to a risk of explosion. Check test nipple A for soundness. (page 29)

Vitodens 333-F Type WS3C

Covers: Vitodens 333-F

GC 47-819-07

Force lower and upper output (relay test), constant temperature control unit

1. Start boiler and create a heat demand.
2. K + d press simultaneously: "1" is shown (lower output).
3. a press: "2" is shown (upper output). (symbol shown in the manual, see the page)
4. After testing, press d.

From manual 5692 765 GB, page 31.

Force lower and upper output, weather-compensated control unit

1. K + d press simultaneously: "Relay test" and then "Base load" is shown.
2. a press: "Full load" is shown. (symbol shown in the manual, see the page)
3. After testing, press d.

From manual 5692 765 GB, page 32.

CO₂ and CO from manual 5692 765 GB, page 31. Check against the data badge.

Because of factory settings, the gas pressure must not be altered from these settings. The boiler has an electronic combustion control unit that adjusts the burner to the prevailing gas quality; for natural gas no adjustment is required across the entire Wobbe range. CO build-up as a result of an incorrect burner setup can have serious health implications. Carry out a CO test prior to and after work on gas equipment. (page 128)

Vitodens 343-F Type WS4A

Covers: Vitodens 343-F WS4A

GC 47-819-08

Relay test: force lower output (Base load) / upper output (Full load)

1. Press both keys 9 and d simultaneously until the display shows "Relay test".
2. With a/b in the display, select "Base load" (burner modulation lower output) or "Full load" (burner modulation upper output).
3. After testing, press d.

From manual 5592 883 GB, page 45.

Service level key combinations

1. Relay test: press K and d simultaneously for approx. 2 s; exit with d
2. Max. output (heating mode): press K and F simultaneously for approx. 2 s; exit with d
3. Emissions test function "S": press F and E simultaneously for approx. 2 s; exit by pressing F and E simultaneously

From manual 5592 883 GB, page 85.

CO₂ and CO from manual 5592 883 GB, page 45. Check against the data badge.

Because of factory settings, the gas pressure must not be altered from these settings. The electronic combustion control unit adjusts the burner automatically to the prevailing gas quality; no adjustment is required for natural gas across the entire Wobbe range (10.0 to 16.1 kWh/m3). Static pressure should be max. 57.5 mbar (checked at test connector "PE" on the gas train). Max. test pressure for the soundness test is 150 mbar. (page 144)