Viessmann VITODENS 200-W B2HE 85 Troubleshooting guide

Quick Start-up Guide
6167 990 - 03 09/2021
Before you install the boiler;
This boiler is configured for Natural Gas from the factory. If conversion to
Propane Gas is required, the conversion kit supplied with the boiler must be used.
This guide is designed to provide a quick overview to the licensed professional
heating contractor for installing the Vitodens 200-W B2HE boiler. It is NOT
a substitute for the technical support literature supplied with the boiler and
accessories.
The technical support literature for each product contains the necessary
safety and national/local code requirements which, if not followed exactly,
may lead to property damages, personal injuries and/or loss of life. Viessmann
Manufacturing assumes no responsibility for damage(s) of any kind caused by
inappropriate use of this manual and/or failure to read the technical literature
provided which may also render the warranty null and void.
Codes
The installation of this unit shall be in accordance with local codes or, in the
absence of local codes, use CAN/CSA-B149.1 or .2 Installation Codes for
Gas Burning Appliances for Canada. For U.S. installations use the National
Fuel Gas Code ANSI Z223.1. Always use latest editions of codes.
In Canada all electrical wiring is to be done in accordance with the latest
edition of CSA C22.1 Part 1 and/or local codes. In the U.S. use the National
Electrical Code ANSI/NFPA 70. The heating contractor must also comply with
both the Standard for Controls and Safety Devices for Automatically Fired
Boilers, ANSI/ASME CSD-1, and the Installation Code for Hydronic Heating
Systems, CSA B214-01, where required by the authority having jurisdiction.
for use by a licensed professional heating contractor
for typical installations
Vitodens 200-W, B2HE
Models 85 to 199
Wall-Mounted, gas-fired condensing boilers
On demand domestic hot water with Combi boiler
Heating input: 8.5 to 199 MBH (2.5 to 58.3 kW)
HH
Unpacking and Included with Boiler
Unpacking and Included with Boiler
1
Unpack and set aside
(e.g. the front cover panel,
the documentation package,
installation fittings, etc.)
Boiler Installation Dimensions and Mounting Details
Boiler Installation Dimensions and Mounting Details
2
Ensure that the boiler bracket and boiler are securely fastened and level.
IMPORTANT
Refer to the “Dimensions and Installation” sections of the B2HE
Installation and Service Instructions for more detail.

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Vitodens 200-W, B2HE Quick Start-up Guide
B2HE B2HE
Installation
Installation Fittings and Typical Piping Connections
Installation Fittings and Typical Piping Connections
3
Legend
ABoiler heating system supply
BTank heating supply
CDHW connection with pressure relief valve (PRV)
DGas connection
EDCW connection
FTank heating return
GBoiler heating system return
Legend
MSafety valve
NBrass adapter
ORetaining clip
PCable ties
QPressure gauge
Refer to the “Connections” section of the B2HE Installation and
Service Instructions for more detail.
B2HE 85/120 B2HE 150/199
HBoiler pressure relief valve
(PRV and pressure gauge)
ILow loss header (accessory)
JBoiler fill
KIndirect DHW tank
LExpansion tank
Closely spaced
tees (4x the pipe
diameter)(field
supplied)
Legend
ABoiler heating system supply
BTank heating supply
CDHW connection with pressure relief valve (PRV)
DGas connection
EDCW connection
FTank heating return
GBoiler heating system return
HBoiler pressure relief valve (PRV and pressure gauge)
ILow loss header (accessory)
JBoiler fill
KIndirect DHW tank
LExpansion tank
Low loss header
(Viessmann
optional
accessory)
Boiler
Boiler
Condensate Connection
Condensate Connection
4
Legend
AFlexible condensate discharge tubing (from boiler).
BCondensate discharge tubing with clamps (field
supplied) if required. For connection to neutralization unit and / or
suitable sewage drain.
Install the flexible condensate discharge tube Aonto the boiler syphon
discharge located at the bottom rear of the boiler.
Ensure that the condensate line is clear from any blockage and is not exposed to
freezing temperatures at any point in time.
with or without
Neutralization Unit
Air Gap
Refer to the “Neutralization Unit” Instructions supplied with the
neutralization unit.
CNeutralizer unit (optional) Note: Consult local codes.
DCondensate discharge tubing with clamps (field supplied).
IMPORTANT
Filling the Siphon with Water
Filling the Siphon with Water
5
Fill the siphon with 10 fl. oz. (0.3 liters) of water into the boiler adaptor
before start-up.
Refer to the “Connections” section of the B2HE
Installation and Service Instructions for more detail.

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Vitodens 200-W, B2HE Quick Start-up Guide Installation
Preparing for Vent Connection
Preparing for Vent Connection
6
The Vitodens 200-W boiler comes with a preinstalled vent pipe adaptor. Installing the venting system, single-pipe,
two-pipe or coaxial, through the side wall or roof, taking the shortest possible route and at a horizontal pitch of
2 in./3.3 ft. (50 mm/1 m).
For coaxial or single pipe venting system
The combustion air inlet cover A remains installed and the boiler flue adaptor air
inlet cover Cis not installed.
For two pipe venting systems
The boiler flue adaptor air inlet cover C must be installed and the combustion air inlet cover A,
remove the center section and leave the rubber seal in place.
Note: The right side gasket is sized for a 3.5 inch outside diameter, the left side gasket is sized for
a 3.15 inch outside diameter, these can be interchanged if required.
Legend
A Combustion air
inlet with cover
B Flue gas
C Boiler flue adaptor
air inlet cover
Refer to the “Rigid and Flex Pipe Venting
Systems” Instructions supplied.
Coaxial Vent System Boiler Connections
Coaxial Vent System Boiler Connections
7
# Component
1Vent Component
Maximum equivalent vent length
B2HE 60/100 80/125 100/150 or
110/160
85/120 43 ft. (13 m) 98 ft. (30 m) 118 ft. (36 m)
150/199 -- 33 ft. (10 m) 43 ft. (13 m)
Type of fitting Equivalent length
87º elbow / 87º inspection tee 1.6 ft. (0.5 m)
45º elbow 1 ft. (0.3 m)
Refer to the “Rigid and Flex
Pipe Venting Systems”
Instructions supplied.
Flue Connection for Single or Two Pipe Systems
Flue Connection for Single or Two Pipe Systems
8
# Component
1Vent Component (PPs 80 mm, CPVC 3” or SS 3”)
2Vent starter adaptor (CPVC or SS)
Maximum equivalent vent length
B2HE 2 in. (50 mm) 3 in. (76 mm) 4 in. (102 mm)
85/120 98 ft. (30 m)* 164 ft. (50 m) 198 ft. (60 m)
150/199 -- 98 ft. (30 m) 148 ft. (45 m)
Combustion
air opening
Standard long sweep elbows
Approved venting
material
short 90° elbow equiv.
length ft. (m)
long 90° elbow equiv.
length ft. (m)
long 45° elbow equiv.
length ft. (m)
short 87° elbow equiv.
length ft. (m)
87° elbow / 87°
inspection tee ft. (m)
Stainless steel -- 3 (0.9) 2 (0.6) -- --
CPVC plastic pipe 8 (2.4) 5 (1.5) 3 (0.9) -- --
PP(s) -- -- 3 (0.9) 8 (2.4) 5 (1.5)
Refer to the “Rigid and Flex Pipe Venting Systems”
Instructions supplied.
Coaxial Vent System Boiler Connections
Coaxial Vent System Boiler Connections
9
# Component
1
Air intake component
(suitable materials include PVC, CPVC and ABS)
Maximum equivalent vent length
B2HE 2 in. (50 mm) 3 in. (76 mm) 4 in. (102 mm)
85/120, 98 ft. (30 m)* 164 ft. (50 m) 198 ft. (60 m)
150/199 -- 98 ft. (30 m) 148 ft. (45 m)
Standard long sweep elbows
Material 90° elbow equivalent length 45° elbow equivalent length
Plastic pipe 5 ft. (1.52 m) 3 ft. (0.91 m)
Refer to the “Rigid and Flex
Pipe Venting Systems”
Instructions supplied.
* There is an input reduction of 2%
(for the B2HE 85) and 5% (for the
B2HE 120)
* There is an input reduction
of 2% (for the B2HE 85) and
5% (for the B2HE 120)

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Vitodens 200-W, B2HE Quick Start-up Guide
Installation
Typical Single Pipe and Coaxial Pipe Venting Layouts
Typical Single Pipe and Coaxial Pipe Venting Layouts
10
Typical Two Pipe Venting Layouts
Typical Two Pipe Venting Layouts
11
Flex Pipe Venting
Rigid Pipe Venting Coaxial Pipe Venting
Combustion
air opening
Combustion
air opening
Flex Pipe
Venting Rigid Pipe
Venting
Rigid Pipe
Venting
OR
OR
Refer to the “Rigid and Flex Pipe Venting Systems”
Instructions supplied.
Refer to the “Rigid and Flex Pipe
Venting Systems” Instructions supplied.
Opening the Junction Box
Opening the Junction Box
12
Accessing the Electrical Connections
Accessing the Electrical Connections
13
Placing the control base in the service position
1. Release tabs on the boiler control base.
2. Pull the control base straight out.
3. Place the control base in the service position, there are positioning tabs
located at the rear of the control base to be aligned with the holes in the
boiler jacket and lock in place with the control base clips.
Opening the junction box
4. Release junction box cover clamps.
5. Lift the junction box cover.
Legend
ADiaphragm grommets, low voltage
BON/OFF switch
CKnockouts for 120VAC connections
Bundle cables using cable ties.
Route low voltage cables separately from 120V~ cables.
Secure the cables on the underside using the supplied cable ties.
Do not route cables over sharp edges.
Refer to the “Control Connections” section of
the B2HE Installation and Service Instructions for
more detail.
Connecting DHW Tank Temperature Sensor (B1HE) Optional
Connecting DHW Tank Temperature Sensor (B1HE) Optional
14
Tank Temperature Sensor (Supplied)
Install the supplied tank temperature sensor Ainto the tank (in one of two
locations) to terminal 3 and 4 located in the boiler junction box C(as shown).
Tank Temperature Controller (Field Supplied)
To connect the field supplied Tank Temperature Controller (e.g. Aquastat). Connect
the Tank Temperature Controller wiring B to terminal 3 and 4 located in the
boiler junction box C.
Refer to the “Electrical Connections” section of the B2HE
Installation and Service Instructions.
Refer to the “Tank Temperature Controller” manufacturer’s
Instructions for more detail.

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Vitodens 200-W, B2HE Quick Start-up Guide Installation
Fixed Setpoint With or Without Room Temperature Thermostat
Fixed Setpoint With or Without Room Temperature Thermostat
15
Weather-compensated With or Without Room Temperature Thermostat
Weather-compensated With or Without Room Temperature Thermostat
16
Boiler Conversion Liquid Propane Gas Labels
Boiler Conversion Liquid Propane Gas Labels
17
The boiler control MUST be programmed for Liquid Propane Gas (LPG).
Apply new labels as shown.
Legend
ACSA Rating Plate
BField Conversion Label
CGas Type Label
IMPORTANT
Boiler Power Supply
Boiler Power Supply
18
120/1/60 12A Power Supply with disconnect and protection. The Vitodens
200-W comes with a pre-installed power cord with 3 prong plug for simplified
installation.
Note: the pre-installed power cord can be cut in order to be hard wired.
Refer to the “Fuel Conversion and Labelling Instructions”
supplied with the conversion kit.
Refer to the “Electrical Connections” section of the B2HE
Installation and Service Instructions for more detail.
Connect one of the following fixed setpoint operations, with or without room
temperature thermostat.
Refer to the “Electrical Connections” section of the B2HE
Installation and Service Instructions for more detail.
B
C
D
ABC DE
FGH
Legend
AZone Pump 1 (ZP1)
BZone Pump 2 (ZP2)
The Vitodens 200 B2HE has the ability to control up to 3 zone circuits.
Each zone circuit includes input/output for one pump and one thermostat
(24VAC or Dry Contact – field supplied). For systems with primary/
secondary loops (using Low Loss Header or Closely Spaced tees) connect
Low Loss Header sensor (accessory).
The Vitodens 200 B2HE can also support up to 3 mixing valve circuits using
thr mixing valve extension modules (accessory).
IMPORTANT
GLow Loss Header Temperature Sensor (TSI)
HPlus BUS accessory connection
Filling and Bleeding the Heating System
Filling and Bleeding the Heating System
19
Closing the Junction Box
Closing the Junction Box
20
Valves/fittings on site:
AGas shut-off valve
BHeating return with fill valve
CHeating supply with drain valve
Note: The fill and purge function is a feature
of the commissioning assistant,
the commissioning assist will activate when
the boiler is powered on for the first time.
A
CB
B2HE 85/120
A
CB
B2HE 150/199
1. Place the junction box lid on the junction box.
2. Secure in place with latches.
3. Release the tabs on the boiler control base.
4. Pull the control base straight out.
5. Re-install the control base into the base of
the boiler.
CZone Pump 3 (ZP3)
DZone Input 1 (ZI1)
EZone Input 2 (ZI2)
FZone Input 3 (ZI3)
Closing the Boiler
Closing the Boiler
21
1. Install the front panel.
2. Install the programming unit in the control base.
Note: Before installing the programming unit remove the WiFi labels from
the back of the programming unit and apply one label Bon the pro
gramming unit, one in these instructions and one in the operating
instructions.
Legend
ALightguide (at the top)
BWiFi label

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Vitodens 200-W, B2HE Quick Start-up Guide
Installation
Using the Commissioning Assistant
Using the Commissioning Assistant
23
Note: Apps for commissioning and service are available for iOS and
Android devices.
This boiler can be commissioned using the Vitoguide Mobile App or the
boilers HMI, to proceed using the app select ‘With App’ to continue with
the boilers HMI select with programming unit.
Starting the Boiler Using the Commissioning Assistant
Starting the Boiler Using the Commissioning Assistant
24
Commissioning assistant sequence Explanations and references
Commissioning
Language
With programming unit If commissioning is to be carried out at the programming unit of the heat generator.
With software tool The appliance automatically switches on the WiFi access point.
Further commissioning steps according to the instructions of the software tool used (e.g. “Vitoguide mobile”)
Altitude Set the elevation of the installation site
Units of measurement ºC/m or ºF/ft
Date and time
Operating mode
(based on boiler application)
Weather-compensated operation
The outside temperature sensor must be connected.
Constant operation
Operation with constant supply temperature
Building type Detached house
One shared vacation program and time program for DHW and heating
Apartment building
A separate vacation program can be set for each heating circuit
Gas type If operating with LPG, switch to “LPG”
Flue system type Single connection
Only one boiler is connected to the flue system (factory setting).
Multiple connections
Several heat generators are connected to the flue system.
Filling and purging
If no further settings are to be performed, the commissioning assistant can now be closed.
System scheme
Heating circuit 1
(based on boiler application)
Heating circuit without mixing valve or heating circuit without mixing valve with external hook-up (if installed)
Heating circuit 2, 3 ...
(based on boiler application)
Heating circuits with mixing valve or heating circuits with mixing valve with
external hook-up (if installed)
DHW
Not available
Tank with one sensor
Tank with one sensor and DHW
circulation pump
Tank with temperature switch
Tank with temperature switch and
DHW recirculation pump
external hook-up (if installed)
Tank equipped with DHW temperature switch (such as an Aquastat)
Tank equipped with DHW temperature switch (such as an Aquastat) and
DHW recirculation pump
Low loss header/buffer cylinder
Not available
Low loss header, heating only
DHW heating upstream of
low loss header
DHW heating downstream of low
loss header
Buffer cylinder, heating only
DHW heating upstream of buffer
cylinder
DHW heating downstream
of buffer cylinder
Settings for the consumer circuits according to the system components
There is no low loss header or heating water buffer tank in the system.
System with low loss header, without DHW heating DHW heating with
e.g. separate DHW tank connected upstream of the low loss header
DHW heating with e.g. separate DHW tank connected downstream of the low loss header
System with heating water buffer tank, without DHW heating
DHW heating with e.g. separate DHW tank connected upstream of the heating water buffer tank
DHW heating with e.g. separate DHW tank connected downstream of the heating water buffer tank
Solar
(if installed)
No solar function
Solar thermal system connected to boiler via EM-S1 extension
Setting subject to the design of the solar thermal system
EM-S1 extension installation and service instructions
Heating zone/safety input
Heating zone 1
Heating zone 2
Heating zone 3
(based on boiler application type)
Not available, or temperature controller or low water indicator
Not available or temperature controller or monitoring for excessively low gas pressure
Not available or temperature controller or monitoring for excessively high gas pressure
Turning on the Boiler for the First Time
Turning on the Boiler for the First Time
22
Upon initializing the power forthe first time, the boiler will automatically call
up the commissioning assistant.

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Vitodens 200-W, B2HE Quick Start-up Guide
Starting the Boiler Using the Commissioning Assistant
Starting the Boiler Using the Commissioning Assistant (continued)
24
Floating contact: Function
selection plug 96
If a contact has been connected to plug 96.
No function
External demand, DHW
circulation pump
External demand
(based on boiler application
type)
External blocking
Heat demand
(based on boiler application
type)
Pushbutton function, DHW recirculation pump runs for 5 min.
Boiler demand with adjustable target supply temperature
(parameter 528.0) and target primary pump speed (parameter 1100.2)
Call for heat is shown in the display/menu as “Heating zone 4”.
EM-EA1 (DIO): Function selection
(based on boiler application type)
If an EM-EA1 extension (DIO electronics module) is connected as a
function extension.
Functions Selection of the connected function according to the table in the EM-EA1 extension installation instructions.
Remote control units
(based on boiler application type) Set the type of remote control and subscriber no. as assignment to the respective
heating circuit. Up to 4 heating circuits can be assigned to one remote control unit.
It is not possible for several remote controls to act on one heating circuit.
Maintenance
Interval in burner hours run until next
maintenance
Interval adjustable in steps of 100 h.
Interval until next maintenance Interval adjustable to 3, 6, 12, 18 or 24 months.
Installation
Setting the Room Temperature
Setting the Room Temperature
25
Setting the Room Temperature
Setting the Room Temperature
26
Setting DHW Temperature
Setting DHW Temperature
27
1. Taap the header bar and select desired heating circuit.
2. Tap .
3. Tap for either reduced,
standard, or comfort to
adjust
temperatue set point.
4. to confirm, this will take you back to the home screen.
In the delivered condition, the slope of the heating curve is set to 1.4, the
level of the heating curve is set to 0.
Typical Radiant = 0.6 slope & 0 curve set point
Typical Baseboard = 2.4 slope & 0 curve set point
Typical Fan Coil = 0.8 slope & 15 curve set point
Factory setting:
“Slope”: 1.4
“Shift”: 0
Tap the following buttons:
1.
2. “Heating”
3. Select “heating zone or heating circuit”.
4. Select a heating zone or heating circuit,
e.g.
“Heating circuit 1”
5. “Heating curve”
6. for the required value for “Slope” and “Shift” respectively
The graph displayed clearly shows the change in the “Heating curve”
as soon as you alter the value for the “Slope” or “Shift”.
7. to confirm
Note: The heating curve can only be adjusted in weather-compensated
operation.
By setting the “Heating curve”, you influence the supply temperature
provided by the boiler.
To ensure your rooms are heated optimally at any outside temperature,
you can adjust the “Shift” and “Slope” of the “Heating curve
Note: Not valid for systems with a DHW tank with
temperature switch (e.g. Aquastat). The factory settings 122°F (50°C).
Note: For reasons of good hygiene, you should not set the
DHW temperature lower than 122°F (50°C).
Tap the following buttons:
1. If applicable, for the “DHW” default display
2. for the required value
3. to confirm
Refer to the “Operation” section of the B2HE Operating
Instructions for more detail.

6167 990 - 03
Vitodens 200-W, B2HE Quick Start-up Guide
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Scan for
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F.378 Burner in a
fault state
Flame loss during
stabilization or
operating phase
Check gas supply (gas pressure and gas flow switch).
Check flue gas recirculation.
Check for contamination of ionization electrode and burner gauze assembly. Reset the boiler.
F.379 Burner in a
fault state
Flame signal
not present or
insufficient
Check ionization electrode connecting
cable for damage and firm seating.
Check ionization electrode; replace if necessary. Reset the boiler.
F.380 Burner in a
fault state
Flame loss
immediately after
flame formation
(during safety time)
Check gas supply (gas pressure and gas flow switch).
Check balanced flue system for flue gas recirculation.
Check ionization electrode and burner gauze assembly:
Clearance to burner gauze assembly
Contamination on electrode Reset the boiler.
F.381 Burner in a
fault state
Flame loss during
operating phase
Check gas supply (gas pressure and gas flow switch).
Check balanced flue system for flue gas recirculation.
Check ionization electrode and burner gauze assembly:
Clearance to burner gauze assembly.
Contamination on electrode Reset the boiler.
F.446 Burner in a
fault state
Deviation, boiler
supply temperature
sensor/high limit
safety cutout
Check the supply temperature sensor/high limit safety cut-out.
Check plug-in connection and lead to sensor.
Reset the boiler.
F.467 Burner in a
fault state
Gas supply
insufficient
during calibration.
Contaminated or
insufficiently sized
gas line.
Test static gas pressure and gas flow
pressure.
Check that on-site gas line and gas flow
switch are correctly sized.
Visually inspect gas solenoid valve inlet and
strainer on the inlet side for contamination. Reset the boiler.
Note: Contamination from a brazed gas line, for example,
can block up the gas solenoid valve strainer on the inlet side.
Fault Codes
Fault Codes
28
Displayed
fault code
System
characteristics
Cause Measures
F.13 Regulates as
if the outside
temperature
were 0°C.
Lead break, outside
temperature sensor
Check the operating mode setting in the commissioning assistant and correct if necessary.
Check outside temperature sensor and connection to sensor (external plug, contacts 1 and 2).
Measure voltage at sensor input on electronics module.
Target value: 3.3V– with sensor disconnected. Replace faulty component if necessary.
F.69 Burner in a
fault state
Ionization current
lies outside the
permissible range
Check ionization electrode:
Check whether insulation block is touching electrode ceramic.
Check gas solenoid valve: Activate
“Minimum heating output” for approx. 4 min in actuator test.
If this causes a fault to occur, replace BCU burner control unit.
In the actuator test, switch from “Minimum heating output” to “Maximum heating output”. ‘
If this fault occurs during modulation, check the intake screen for contamination.
Replace the fan unit if necessary.
F.70 Burner in a
fault state
Internal error burner
control unit
Replace BCU burner control unit:
See page 89.
F.71 Burner in a
fault state
Fan speed too low Check fan for blockage.
Check the gas type and flue system setting in the commissioning assistant and correct if necessary.
Reset the boiler.
F.72 Burner in a
fault state
Fan idle state not
reached
Reset the boiler.
If fault occurs repeatedly, replace fan unit.
F.73 Burner in a
fault state
Internal
communication error
Reset the boiler.
If fault recurs, replace BCU burner control unit: See page 89.
F.182 No DHW
heating
Short circuit, outlet
temperature sensor
(if installed)
Check outlet temperature sensor (plug X1, cores 13 and 14).
Measure sensor input on electronics module.
Target value: 3.3V– with sensor disconnected
F.183 No DHW
heating
Lead break, outlet
temperature sensor
(if installed)
Check outlet temperature sensor
(plug X1, cores 13 and 14).
F.299 Time/date
incorrect
Real time clock
setting incorrect
Set the time and date.
F.373 Burner in a
fault state
Heat transfer
too low during
calibration
Temperature limiter
has shut down.
Ensure adequate heat transfer.
Check circulation pump for faults, scale or blockages.
Check 3-way diverter valve function in actuator test. Vent the system.
Check function of flow sensor. Reset the boiler.
Note: Fault messages dependent on boiler equipment level Refer to the fault code section of the B2HE Service Instructions for
the complete list of fault codes.