Viessmann VITODENS 222-F Service Instructions Manual
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Viessmann VITODENS 222-F Service Instructions Manual

Floor mounted, gas-fired condensing storage combi boiler
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Service Instructions

for use by heating contractor
Vitodens 222-F, B2TA Series
Models 19 and 35
Floor mounted, gas-fired condensing storage combi boiler
For operation with natural gas and liquid propane gas
Heating input: 12 to 125 MBH
3.5 to 37 kW
VITODENS
5683 714 - 05 09/2014
222-F
r
H
Product may not be exactly as shown
IMPORTANT
Read and save these instructions
for future reference.
Please file in Service Binder

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Summary of Contents for Viessmann VITODENS 222-F

  • Page 1: Service Instructions

    Service Instructions for use by heating contractor Vitodens 222-F, B2TA Series Models 19 and 35 Floor mounted, gas-fired condensing storage combi boiler For operation with natural gas and liquid propane gas Heating input: 12 to 125 MBH 3.5 to 37 kW...

  • Page 2: Safety

    Safety Vitodens 222-F B2TA 19 and 35 Service Safety, Installation and Warranty Requirements Please ensure that these instructions are read and understood before commencing installation. Failure to comply with the instructions listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life.

  • Page 3: Fiberglass Wool And Ceramic Fiber Materials

    Safety Vitodens 222-F B2TA 19 and 35 Service Safety, Installation and Warranty Requirements (continued) Suppliers of fiberglass wool products recommend the Fiberglass wool and ceramic fiber materials following precautions be taken when handling these materials: WARNING - Avoid breathing fiberglass dust and contact with skin and eyes.

  • Page 4: Table Of Contents

    Table of Contents Vitodens 222-F B2TA 19 and 35 Service Page Safety, Installation and Warranty Requirements....2 Safety Product documentation..........2 Warranty..............2 Licensed professional heating contractor....2 Advice to owner............2 Operating and Service Documentation......2 Carbon monoxide...........2 Fresh air..............2 Equipment venting..........2 Fiberglass wool and ceramic fiber materials....3 First aid measures..........3...

  • Page 5: Parts

    Table of Contents Vitodens 222-F B2TA 19 and 35 Service Page Service (continued) Checking the Condensate Drain and Cleaning the Siphon...............23 Check Neutralization Unit.(if applicable).......23 Draining the Boiler on the DHW Side......24 Cleaning the DHW Storage Tank........24 Checking the Diaphragm Expansion Vessel and System Pressure............25...

  • Page 6: General Information

    General Information Vitodens 222-F B2TA 19 and 35 Service Necessary Tools Testing/analysis equipment (Use only calibrated equipment) Cleaning supplies H Multimeter to measure 0 - 230V, 0 - 12A AC and H Plastic hand brush 0-100 mA DC H Rags...
  • Page 7 CSD-1 Field Testing of High Limit Switches for Vitodens boilers – where required by law. VIESSMANN IS NOT RESPONSIBLE FOR ANY DAMAGES THAT THE FOLLOWING TEST PROCEDURE MAY RESULT IN BY OVERHEATING THE SYSTEM.

  • Page 8: Applicability

    (DHW) production. Follow the Vitodens Venting System The Vitodens 222-F, B2TA series boiler comes factory Installation Instructions to vent this boiler. set for operation with natural gas. For a fuel conversion to liquid propane gas no conversion kit is required (see page 16).

  • Page 9: Mechanical Room

    General Information Vitodens 222-F B2TA 19 and 35 Service Mechanical Room During the early stages of designing a new home, we recommend that proper consideration be given to constructing a separate mechanical room dedicated to the gas- or oil-fired heating equipment and domestic hot water storage tank(s).

  • Page 10: Overview

    General Information Vitodens 222-F B2TA 19 and 35 Service Overview Legend A Expansion tank K Flue adaptor B Boiler PRV L Optional air intake C ASME rating plate M ASME certified heat exchanger D Drain pipe for boiler PRV N Matrix burner...

  • Page 11: Removing The Front Panels

    Start-up Vitodens 222-F B2TA 19 and 35 Service Removing the Front Panels Some of the following service steps require the removal of the front enclosure panel. To avoid personal injury and/or product damage of any kind please follow the instructions below carefully when removing the front enclosure panel.

  • Page 12: Select Language

    Start-up Vitodens 222-F B2TA 19 and 35 Service Select Language At the commissioning stage, the display is in German. 1. “Sprache” (Language) Deutsch DE (German) 2. Select the required language with 3. Accept by pressing OK. To change the language Extended menu: 2.

  • Page 13: Filling The Heating System

    Start-up Vitodens 222-F B2TA 19 and 35 Service Filling the Heating System CAUTION Unsuitable fill water increases the level of deposits and corrosion, and may lead to damage to the equipment. H Thoroughly flush the entire heating system prior to filling with water.

  • Page 14: Bleed (Vent) Air From Boiler Heat Exchanger

    Start-up Vitodens 222-F B2TA 19 and 35 Service Bleed (Vent) Air from Boiler Heat Exchanger Note: To prevent equipment damage, do not bleed the boiler heat exchanger via the pressure relief valve on the heating water side. 1. Close the shut-off valves (field supplied) on the heating water side.

  • Page 15: Check Power Supply Connection

    Enter names for heating circuits see Operating instructions Select Gas Type Note: the Vitodens 222-F, B2TA boiler is factory set to operation with natural gas. See following subsection for conversion instructions to liquid propane gas. 1. Ensure that the fuel type listed on the boiler rating plate is the correct type for the installation being attempted.

  • Page 16: Convert Fuel Type To Liquid Propane Gas

    1. Set adjusting screw A at the gas valve to “2” (using a hex key, 2.5 mm). Note: The Vitodens 222-F, B2TA boiler comes factory adjusted for operation with natural gas. Coding address “82” is set to “0” (operation with natural gas) in the factory default setting.

  • Page 17: Checking The Static And Supply Pressure

    Start-up Vitodens 222-F B2TA 19 and 35 Service Checking the Static and Supply Pressure To measure static and/or running pressure remove boiler enclosure panel as indicated page 11 and 14 in these instructions. Close gas shutoff valve. Loosen screw at inlet gas pressure port A on the gas combination valve, do not remove completely.

  • Page 18: Sequence Of Operation And Potential Faults During Each Start-Up Cycles

    Start-up Vitodens 222-F B2TA 19 and 35 Service Sequence of Operation and Potential Faults During Each Start-up Cycle Display message Measures Increase boiler water set-point Call for heat by control temperature and ensure that there is heat demand Fan starts up After approx.

  • Page 19: Set Maximum Output

    Start-up and Service Vitodens 222-F B2TA 19 and 35 Service Set Maximum Output The maximum output for heating operation can be limited. The limit is set via the modulation range. The maximum adjustable heating input (or output) is limited upwards by the boiler coding card.

  • Page 20: Checking The Burner Flue Gas Flapper

    Service Vitodens 222-F B2TA 19 and 35 Service Checking the Balanced Flue System Tightness (Annular Gap Check) Viessmann strongly recommends that the heating contractor perform a simplified leak test during boiler start-up. For this purpose it is sufficient to measure...

  • Page 21: Assembly

    Service Vitodens 222-F B2TA 19 and 35 Service Checking the Burner Flue Gas Flapper 1. Undo two screws and remove fan A. 2. Remove the burner flue gas flapper B. 3. Check the flapper and gasket for dirt and damage.

  • Page 22: Cleaning The Heat Exchanger And Fitting The Burner

    Service Vitodens 222-F B2TA 19 and 35 Service Cleaning the Heat Exchanger and Fitting the Burner Remove front enclosure panel (if still installed) as per the instructions on page 11 in this manual, and reinstall panel upon completion of service work.

  • Page 23: The Siphon

    Service Vitodens 222-F B2TA 19 and 35 Service Checking the Condensate Drain and Cleaning the Siphon 1. Check that the condensate can drain freely in the siphon. 2. Pull retaining clip A off. 3. Pull filler pipe B upwards. 4. Pull off trap C downwards.

  • Page 24: Draining The Boiler On The Dhw Side

    Service Vitodens 222-F B2TA 19 and 35 Service Draining the Boiler on the DHW Side 1. Connect hose to drain valve and route into a suitable container or drain outlet. Note: Ensure adequate ventilation in the DHW pipework. 2. Turn drain valve from lever position A to lever position B or C as required.

  • Page 25: Checking The Diaphragm Expansion Vessel And System Pressure

    Service Vitodens 222-F B2TA 19 and 35 Service Checking the Diaphragm Expansion Vessel and System Pressure Perform check with the system cold. 1. If the nitrogen pressure of the precharged expansion tank is less than the static pressure of the system, top up with nitrogen via connection A, until the inlet pressure is 1.4 to 2.9 psi higher than the static...

  • Page 26: Check Electrical Connections

    Service Vitodens 222-F B2TA 19 and 35 Service Check Electrical Connections Ensure all plug-in connectors and strain reliefs make positive contact and are seated properly. Refer to the Installation Instructions Check Gas Pipes and Fittings for Leaks Note: For the tightness test, use only suitable and approved leak detecting agents and devices.

  • Page 27: Clock Natural Gas Meter

    Multiply this number by the heating value of the gas to obtain Btu per hour input. For example: A Vitodens 222-F, B2TA 35 boiler (125 000 Btu/h input) requires 288 seconds to use 10 ft. of natural gas. After contacting the local utility, you will find the heating value is 1000 Btu per ft.

  • Page 28: Check Co Setting

    Note: The Vitodens 222-F, B2TA boiler comes factory set to operation with natural gas. (For instructions on how to convert to operation with liquid propane gas, see page 16.) For high-altitude operation above 5,000 ft. (1,500 m), see page 16.

  • Page 29: Start-Up And Shutdown

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Start-up and Shutdown Starting the heating system 1. Check the heating system pressure at the pressure gauge. The heating system pressure is too low if the indicator points to the area below 15 psi.
  • Page 30 Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Menu (continued) Note: For any other connected heating circuits, use the settings in the extended menu. Call up the standard menu as follows: - If the screen saver is active...

  • Page 31: Combustion Management System

    10.0 1.37 1.40 1.44 1.48 The Vitodens 222-F, B2TA boilers come equipped with Lambda Pro, the industry’s first intelligent combustion management system. The boiler adjusts automatically to any gas type and quality without the need for a fuel conversion kit.

  • Page 32: Functional Description

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Functional Description Heating mode The control unit determines a set boiler water temperature subject to outside temperature or room temperature (if a room temperature-dependent remote control is connected) and to the slope/ shift of the heating curve.

  • Page 33: Installation Examples

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Installation Examples Matching the control unit to the heating system The control unit must be matched to the equipment level of the system. Various system components are recognized automatically by the control unit and the relevant codes are adjusted automatically.

  • Page 34: System Version 2

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Installation Examples (continued) System version 2 One heating circuit with mixing valve M2 and a low loss header Code Function/system components Adjust Factory set condition Operation with LPG 82:1...

  • Page 35: System Version 3

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Installation Examples (continued) System version 3 One heating circuit without mixing valve A1 and one heating circuit with mixing valve M2 Code Function/system components Adjust Factory set condition Operation with LPG...

  • Page 36: System Version 4

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Installation Examples (continued) System version 4 One heating circuit without mixing valve A1, one heating circuit with mixing valve M2 and system separation Code Adjust Factory set condition Function/system components...

  • Page 37: System Version 5

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Installation Examples (continued) System version 5 One heating circuit without mixing valve, one heating circuit with mixing valve M2 (with extension kit), one heating circuit with mixing valve M3 (with extension kit)

  • Page 38: Heating Curve Adjustment

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Heating Curve Adjustment The heating curves represent the relationship between the outdoor temperature and the boiler water or supply temperature. Put simply: The lower the outdoor temperature, the higher the boiler water or supply temperature.
  • Page 39 Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Heating Curve Adjustment (continued) Changing the slope and shift Extended menu: 2. Select “Heating” - OK 3. Heating circuit selection 4. Accept with OK 5. Heating curve - OK 6.

  • Page 40: Connecting The Boiler Control To A Lon System

    Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Connecting the Boiler Control to a LON System The LON communication module (accessory) must be Note: In the same LON system, the same participant connected. number cannot be allocated twice. Only one Vitotronic may be programmed as fault manager.
  • Page 41 Outdoor Reset Programming Unit Vitodens 222-F B2TA 19 and 35 Service Connecting the Boiler Control to a LON System (continued) Updating the LON participant list Scanning and resetting the “Service” display Only possible if all participants are connected and the After the limits specified in coding addresses “21”...

  • Page 42: General

    Code 1 Vitodens 222-F B2TA 19 and 35 Service General Accessing coding level 1 1. Press OK and simultaneously for approximately 4 seconds. Note: Codes are displayed as plain text. 2. “Coding level 1” Codes that have no function due to the heating 3.
  • Page 43 Code 1 Vitodens 222-F B2TA 19 and 35 Service General (continued) Coding in the factory set mode Possible change Internal circulation pump function 51:0 Internal circulation pump always 51:1 System with low loss header: starts when there is a heat...

  • Page 44: Boiler

    Code 1 Vitodens 222-F B2TA 19 and 35 Service Boiler Select “Boiler” Coding in the factory setting Possible change Single/multi boiler system Boiler number Burner service in 100 hours 21:0 No service interval (hours run) 21:1 Number of hours run before the...
  • Page 45 Code 1 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 Select “Heating circuit ...” Coding Coding in the factory setting Possible change Economy function outside temperature A5:5 With heating circuit pump logic A5:0 Without heating circuit pump function (economy mode): logic function.
  • Page 46 Code 1 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change Extended economy function mixing valve A7:0 Without mixing valve economy A7:1 With mixing valve economy function function (extended heating circuit pump logic): Heating circuit pump also “OFF”:...

  • Page 47: Heating Circuit 1, 2 And 3

    Code 1 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change Minimum supply temperature heating circuit C5:20 Electronic minimum supply C5:1 Minimum limit adjustable from temp. limit 68° F (20° C) 34 to 260°...
  • Page 48 Code 1 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change Pump control in “Only DHW” F6:25 In the “Only DHW” operating F6:0 In the “Only DHW” operating...

  • Page 49: General

    Code 2 Vitodens 222-F B2TA 19 and 35 Service General If the heating circuits were given individual designations, Calling up coding level 2 the selected designation and “HC1”, “HC2” or “HC3” Note: At coding level 2, all codes are accessible, including appear instead: the codes at coding level 1.
  • Page 50 Code 2 Vitodens 222-F B2TA 19 and 35 Service General (continued) Value address System version Description 00: ... One heating circuit with mixing valve M2 (heating circuit 2) and one heating circuit with mixing valve M3 (heating circuit 3), (code is adjusted automatically).
  • Page 51 Code 2 Vitodens 222-F B2TA 19 and 35 Service General (continued) Coding in the factory setting Possible change 3A:0 Function input DE1 at 3A:1 Function input DE1: Heating extension program - changeover. EA1: Not assigned 3A:2 Function input DE1: External demand with set supply temperature.
  • Page 52 Code 2 Vitodens 222-F B2TA 19 and 35 Service General (continued) Coding in the factory setting Possible change 3C:0 Function input DE3 at extension 3C:1 Function input DE3: Heating EA1: Not assigned program - changeover. 3C:2 Function input DE3: External demand with set supply temperature.
  • Page 53 Code 2 Vitodens 222-F B2TA 19 and 35 Service General (continued) Coding in the factory setting Possible change 51:0 System with low loss header: 51:1 System with low loss header: Boiler circuit pump is always When there is heat demand, the...
  • Page 54 Code 2 Vitodens 222-F B2TA 19 and 35 Service General (continued) Coding in the factory setting Possible change 77:1 LON participant number 77:2 LON participant number, adjustable from 1 to 99: 77:99 1 = Boiler 10 - 98 = Vitotronic 200-H...
  • Page 55 Code 2 Vitodens 222-F B2TA 19 and 35 Service General (continued) Coding in the factory setting Possible change 8A:175 Do not adjust. 8F:0 Operation in the standard menu 8F:1 Operation in standard menu and extended menu enabled. and extended menu blocked.

  • Page 56: Boiler

    Code 2 Vitodens 222-F B2TA 19 and 35 Service Boiler Select “Boiler” Coding Coding in the factory setting Possible change 01:1 Single boiler system DO NOT ADJUST 04:1 Minimum burner pause subject 04:0 System with low-loss header. to the boiler load (specified by...

  • Page 57: Dhw

    Code 2 Vitodens 222-F B2TA 19 and 35 Service Select “DHW” Coding Coding in the factory setting Possible change 56:0 Set DHW temperature 56:1 Set DHW temperature adjustable adjustable from 50 to 140° F from 50 to over 140° F (10 to (10 to 60°...
  • Page 58 Code 2 Vitodens 222-F B2TA 19 and 35 Service (continued) Coding in the factory setting Possible change 63:0 (NOT USED) Without auxiliary function for 63:1 Auxiliary function: 1 x daily DHW heating 63:2 Every 2 days to every 14 days.
  • Page 59 Code 2 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 Select “Heating circuit ...” Coding Coding in the factory setting Possible change A0:0 Without remote control A0:1 With Vitotrol 200A (automatic recognition). A0:2 With Vitotrol 300A or Vitohome 300 (automatic recognition).
  • Page 60 Code 2 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change A4:0 With frost protection A4:1 No frost protection; this setting is only possible if code “A3:-9” has been selected.

  • Page 61: Heating Circuit 1, 2 And 3

    Code 2 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change A8:1 Heating circuit with mixing valve A8:0 Heating circuit with mixing valve creates a demand for the boiler...
  • Page 62 Code 2 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change C5:20 Electronic minimum flow C5:1 Minimum limit adjustable from 1 to temperature limit 68° F 260° F (127° C) (limited by boiler- (20°...
  • Page 63 Code 2 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change E5:0 Without external variable speed E5:1 With external variable speed heating circuit pump heating circuit pump (automatic recognition).
  • Page 64 Code 2 Vitodens 222-F B2TA 19 and 35 Service Heating Circuit 1, 2 and 3 (continued) Coding in the factory setting Possible change F6:25 In the “Only DHW” operating F6:0 In the “Only DHW” operating mode, mode, the circulation pump in...

  • Page 65: Calling Up The Service Level

    Code 2 Vitodens 222-F B2TA 19 and 35 Service Calling up the Service Level Note: Do not adjust menu item “Multi-boiler system”. Press OK and simultaneously for approximately 4 The menu item turns a weather-compensated seconds control unit into a constant temperature control unit.

  • Page 66: Diagnosis

    Diagnosis and Service Scans Vitodens 222-F B2TA 19 and 35 Service Diagnosis Scanning operating data Resetting operating data Saved operating data (e.g. hours run) can be reset to 0. - Operating data can be scanned in six areas. The value “Adjusted outside temp” is reset to the actual See “Diagnosis”...
  • Page 67 Diagnosis and Service Scans Vitodens 222-F B2TA 19 and 35 Service Diagnosis (continued) For an explanation of the relevant values in the individual lines and fields, see the following table: Line (brief Field scan) Software version Equipment version Burner control unit version...

  • Page 68: Checking Outputs (Relay Tests)

    Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Checking Outputs (relay tests) 1. Press OK and simultaneously for approximately 4 seconds 2. “Actuator test” The following relay outputs can be controlled subject to system design: Display Explanation All actuators off...

  • Page 69: Fault Codes

    Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes  Acknowledging a fault In the event of a fault, red fault indicator A flashes. “ “ flashes on the display and “Fault” is shown. Follow the instructions on the display.
  • Page 70 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Mixing valve closes Heating circuit 2 with Check the supply mixing valve supply temperature sensor short circuit on (see page 79).
  • Page 71 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Burner blocked Flue gas temperature Check flue gas temperature sensor shorted out sensor (see page 80). Control mode (stays in Communication fault;...
  • Page 72 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Control mode without remote Communication error, Check connections, cable, control remote control Vitotrol coding address “A0” in “Heating heating circuit 3 circuit”...
  • Page 73 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Control mode Input DE3 reports a Remove fault at appliance fault at extension EA1 concerned. Control mode without Short circuit on room...
  • Page 74 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Burner blocked Fault, supply voltage Replace the control unit. 24 V Burner blocked Fault flame amplifier Replace control unit. Burner in a fault mode...
  • Page 75 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Burner in a fault mode At burner start, flame Check gas supply (gas pressure signal is missing or too and gas regulator). Check gas weak train.
  • Page 76 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Fault Codes (continued) Fault code on display System behavior*1 Cause Corrective action Burner in fault mode Fan not at standstill Check the fan, the fan connecting cables and fan control. Check the fan control.

  • Page 77: Corrective Action

    Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action Putting control unit in maintenance position If required for commissioning and servicing, the control unit can be put in a different position. Draining the boiler on the heating water side 1.
  • Page 78 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Checking the outside temperature sensor 1. Pull plug “X3” from the control unit. 2. Test the resistance of the outside temperature sensor across terminals “X3.1” and “X3.2” on the disconnected plug and compare it with the curve.
  • Page 79 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Check boiler temperature sensor, tank temperature sensor, supply temperature sensor of the low-loss header or room temperature sensor 1. Boiler temperature sensor: Remove lead to boiler water temperature sensor A and check the resistance.
  • Page 80 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Check flue gas temperature sensor When exceeding the maximum permissible flue gas temperature value, the flue gas temperature sensor locks the appliance. Unlock the appliance by pressing reset button R. after the vent system has cooled down.
  • Page 81 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Checking the plate heat exchanger Note: Drain the boiler on its heating water and DHW side. During removal, small amounts of water may trickle out and escape from the plate heat exchanger.
  • Page 82 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Check fixed high limit Check the fixed high limit, if the burner control cannot be reset after a fault shutdown, although the boiler water temperature is below approximately 167° F (75° C): Remove cables from the fixed high limit A.
  • Page 83 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Extension kit for heating circuit with mixing valve Heating circuit Rotary selector S1 setting Checking the setting of rotary selector S1: Heating circuit with mixing valve M2 (heating circuit 2) 2 The rotary selector on the PCB of the extension kit defines the assignment to the relevant heating circuit.
  • Page 84 Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Corrective Action (continued) Fitting the front panels Install upper front panel. Set in lower front panel. Insert and tighten the retaining screw. Install lower front panel.

  • Page 85: External Extensions Am1

    Troubleshooting Vitodens 222-F B2TA 19 and 35 Service External Extensions AM1 Functions Select the output functions by means of the codes on One of the following circulation pumps can be connected the boiler control unit. to each of the connections A1 and A2:...

  • Page 86: Internal Extensions Ea1

    Troubleshooting Vitodens 222-F B2TA 19 and 35 Service Internal Extensions EA1 Legend Refer to main wiring diagram on page 90. Fuse Digital input 1 Digital input 2 Digital input 3 0 – 10 V 0 - 10 V input fÖ...

  • Page 87: Internal Extensions (Accessories)

    Function Description Vitodens 222-F B2TA 19 and 35 Service Internal Extensions (Accessories) Digital data inputs DE1 to DE3 Effect of the external demand function on the pumps The following functions can be connected alternatively: The effect on the internal circulation pump is selected in coding address 3F in the “General”...

  • Page 88: Control Functions

    Function Description Vitodens 222-F B2TA 19 and 35 Service Control Functions External heating program changeover External blocking The “External heating program changeover” function is The “External blocking” and “External blocking and fault connected via input “avD” in the EACB. message input” functions are connected via extension You can select which direction the heating program EA1.
  • Page 89 Function Description Vitodens 222-F B2TA 19 and 35 Service Control Functions (continued) Fill program Raising the reduced room temperature If the system is to be filled with the control unit switched During operation with reduced room temperature, the ON, code “2F:2” starts the pump. The burner shuts down reduced room setpoint temperature can be automatically if this function is enabled via coding address “2F”.

  • Page 90: Wiring Diagram

    Function Description Vitodens 222-F B2TA 19 and 35 Service Wiring Diagram CAUTION WARNING DISCONNECT POWER BEFORE Label all wires prior to disconnection SERVICING BOILER. when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation If any of the original wires as after servicing.
  • Page 91 Function Description Vitodens 222-F B2TA 19 and 35 Service Wiring Diagram (continued) Legend Outdoor Temperature Sensor Supply Temperature Sensor/Low Loss Header Boiler Temperature Sensor DHW Supply Temperature Sensor DHW tank temperature sensor Ionization Electrode Flue Gas Temperature Sensor No Function...

  • Page 92: Burner Program Sequence Of Operation

    Function Description Vitodens 222-F B2TA 19 and 35 Service Burner Program Sequence of Operation Phase 0: Stand-by Phase 6: Burner modulation operation or calibration Complete shutdown until the next call for heat. In this At the end of the flame stabilization period (4.5 seconds.),...

  • Page 93: Parts Lists

    Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number from A when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 94 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 95 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 96 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 97 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 98 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 99 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.
  • Page 100 Parts Vitodens 222-F B2TA 19 and 35 Service Parts Lists (continued) Model No. Serial No. B2TA 19 Boiler 7510826 B2TA 35 Boiler 7510827 Ordering Replacement Parts: Please provide Model and Serial Number when ordering replacement parts. Order replacement components from your Viessmann distributor.

  • Page 101: Installation Fittings

    Parts Vitodens 222-F B2TA 19 and 35 Service Installation Fittings Parts for Top Connection 0301 Flex pipe (NG/LP), full-length 0302 Connecting pipe, DHW/heating 0303 Support bracket with pipe clips 0304 Pipe clip (each) 0307 Connector retaining clip (Set of 2) 0308 Pipe insulation, 19x9x740mm 0310 Gas ball valve, ¾”...

  • Page 102: Technical Data

    Additional Information Vitodens 222-F B2TA 19 and 35 Service Technical Data Boiler Model No. 222-F B2TA Natural Gas / Liquid Propane Gas CSA input 12-67 19-125 3.5-20 5.5-37 CSA output/DOE *1 10.9-61 17.4-114 heating capacity 3.2-18 5.1-33 Net AHRI rating *2 15.5...
  • Page 103 Measured flue gas temperature with a combustion air temperature of 68° F (20° C). Based on typical boiler cycles, including partial load conditions. Requires 1 inch (25 mm) tubing. See the Installation Instructions of the Vitodens 222-F, B2TA for details. For side wall vent installations (coaxial system): Do not exceed max.

  • Page 104: Maintenance Record

    Additional Information Vitodens 222-F B2TA 19 and 35 Service Maintenance Record...

  • Page 105: Lighting And Operating Instructions

    Additional Information Vitodens 222-F B2TA 19 and 35 Service Lighting and Operating Instructions FOR YOUR SAFETY READ BEFORE OPERATING W A R N I N G: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.
  • Page 106 Vitodens 222-F B2TA 19 and 35 Service...
  • Page 107 Vitodens 222-F B2TA 19 and 35 Service...
  • Page 108 Vitodens 222-F B2TA 19 and 35 Service...

This manual is also suitable for:

Vitodens 222-f b2ta 19Vitodens 222-f b2ta 35Vitodens 222-f b2ta series

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