Viessmann Vitodens 100-W WB1B Series Quick guide

Installation and Service
Instructions
VITODENS 100-W
d
5368 828 v1.6 11/2010
for use by heating contractor
Vitodens 100-W
WB1B Series
Wall-Mounted, gas-fired condensing boiler
®This trademark is registered with the U.S. Patent and Trademark Office
Vitodens 100-W, WB1B
(with preinstalled coaxial vent pipe adaptor)
Read and save these instructions
for future reference.
IMPORTANT
Please file in Service Binder
Heating input 37 to 118 MBH
10.8 to 34.5 kW

2
5368 828 v1.6
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. Ensure all requirements below are understood and fulfilled (including detailed information found in
manual subsections).
Safety
The installation, service, and
maintenance of this equipment
must be performed by a licensed
professional heating contractor.
u Please see section
entitled “Important
Regulatory and
Installation
Requirements" in the
Installation Instructions.
Read all applicable documentation
before commencing installation.
Store documentation near boiler
in a readily accessible location for
reference in the future by service
personnel.
u For a listing of
applicable literature,
please see section
entitled”Important
Regulatory and
Installation Requirements"
in the Installation Instructions.
Improper installation, service and/
or maintenance can cause flue
products to flow into living space.
Flue products contain poisonous
carbon monoxide gas.
u For information
pertaining to the proper
installation, service and
maintenance of this
equipment to avoid
formation of carbon monoxide,
please see the Installation
Instructions of the Vitodens
Venting System.
Never operate boiler without
an installed venting system. An
improper venting system can cause
carbon monoxide poisoning.
Information contained in
this and related product
documentation must be
read and followed.
Failure to do so may
render the warranty
null and void.
gWarranty
gEquipment ventinggCarbon monoxide
gProduct documentation
gLicensed professional heating
contractor
WARNING
Installers must follow local
regulations with respect to
installation of carbon monoxide
detectors. Follow manufacturer’s
maintenance schedule of boiler.
gAdvice to owner
Once the installation work is
complete, the heating contractor
must familiarize the system
operator/ultimate owner with all
equipment, as well as safety
precautions/requirements,
shut-down procedure, and the need
for professional service annually
before the heating season begins.

5368 828 v1.6
3
Table of Contents
Safety, Installation and Warranty Requirements.............................................4
About these Installation Instructions............................................................8
Applicability.............................................................................................9
Product Information...................................................................................9
Mechanical Room. ..................................................................................10
Before Set-up.........................................................................................12
Minimum Clearances. ..............................................................................12
Preparing the Connections........................................................................13
Connections overview..............................................................................13
Dimensions overview without bottom piping connections.............................14
Dimensions overview with connections......................................................15
Dimensions overview with connections and alternative drain
connection.............................................................................................15
Wall Mounting........................................................................................16
Wall mounting bracket installation.............................................................16
Mounting Vitodens 100-W boiler...............................................................18
Connections...........................................................................................18
Flue gas connection.................................................................................18
Proper piping practice..............................................................................19
Gas connection and piping........................................................................19
Gas piping pressure test............................................................................21
Heating water connections.......................................................................22
Condensate connection............................................................................23
Fill siphon with water..............................................................................23
Safety Connections and Pressure Testing...................................................24
Installing safety devices on the boiler.........................................................24
Performing pressure test on the boiler........................................................25
Hot water temperature and system pressure...............................................25
Installation Examples...............................................................................26
Boiler in heating/cooling application...........................................................34
Boiler with low water cut-off (remote mounted, field supplied)......................35
Low-loss header......................................................................................36
Venting Connection.................................................................................37
Safety
General Information
Set-up
Boiler Connections
Page

5368 828 v1.6
4
Table of Contents
Electrical Connections..............................................................................37
Rotating the control unit and opening
the power / pump module.........................................................................37
Electrical connections to the power / pump module.....................................38
Optional operating control - Open Therm....................................................38
Closing the power / pump module and reinstalling the control unit................39
Reinstalling the front panel.......................................................................39
Necessary Tools......................................................................................40
Overview of Controls and Indicators..........................................................41
Overview of Components.........................................................................43
Procedure(Overview)...............................................................................44
Steps.....................................................................................................45
TroubleshootingSteps..............................................................................62
Overview of Controls and Indicators..........................................................62
Changing Room Temperature....................................................................63
Diagnosis...............................................................................................64
Sequence of operation and potential faults during each start-up cycle............64
Diagnostics table: Faults with fault display on control unit.............................65
How to reset faults..................................................................................66
Correction .............................................................................................67
Remove front panel.................................................................................67
Check boiler temperature sensor................................................................67
Check outdoor temperature sensor............................................................68
Determining the boiler set-point.................................................................69
Check fixed high limit...............................................................................70
Check flue gas temperature sensor............................................................70
Checkfuses............................................................................................71
Electrical connections to the power / pump module
(room thermostat and DHW)....................................................................72
Input module description OT (Open Therm)
& 0-10V reset modules............................................................................73
Technical Data.......................................................................................74
Burner Program Sequence of Operation......................................................77
Wiring Diagram - natural gas / propane.......................................................79
Parts List...............................................................................................80
Maintenance Record................................................................................83
Lighting and Operating Instructions............................................................84
Control Connections
Initial Start-up,
Inspection and
Maintenance
Troubleshooting
Additional Information
Page

5368 828 v1.6
5
Safety
Important Regulatory and Installation Requirements
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.
u Leave all literature at the
installation site and advise
the system operator/ultimate
owner where the literature can
be found. Contact Viessmann for
additional copies.
u This product comes with several
safety instruction labels attached.
Do not remove!
Contact Viessmann immediately if
replacement labels are required.

5368 828 v1.6
6
Safety
Important Regulatory and Installation Requirements
For installations on the Commonwealth of Massachusetts, the following modifications to NFPA-54 chapter 10 apply:
Excerpt from 248 CMR 5-08:
2(a) For all side-wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used
in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where
the side-wall exhaust vent termination is less than (7) feet above finished grade in the area of the venting,
including but not limited to decks and porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side-wall horizontal
vented gas fueled equipment, the installing plumber or gasfitter shall observe that a hard wired carbon
monoxide detector with an alarm and battery back-up is installed on the floor level where the gas equipment is
to be installed. In addition, the installing plumber or gasfitter shall observe that a battery operated or hard wired
carbon monoxide detector with an alarm is installed on each additional level of the dwelling, building or
structure served by the side-wall horizontal vented gas fueled equipment. It shall be the responsibility of
the property owner to secure the services of qualified licensed professional for the installation of hard-wired
carbon monoxide detectors.
a. In the event that the side-wall horizontally vented gas fueled equipment is installed in a crawl space or an
attic, the hard-wired carbon monoxide detector with alarm and battery back-up may be installed on the next
adjacent floor level.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation,
the owner shall have a period of thirty (30) days to comply with the above requirements; provided, however,
that during said thirty (30) day period, a battery operated carbon monoxide detector with an alarm shall
be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance
with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building
at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for
the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no
less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side-wall horizontally vented gas fueled equipment shall
not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and
signage installed in accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.
(b) EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a) 1 through 4:
1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current
edition of NFPA 54 as adopted by the Board; and
2. Product Approved side-wall horizontally vented gas fueled equipment installed in a room or structure separate
from the dwelling, building or structure used in whole or in part for residential purposes.

5368 828 v1.6
7
Safety
Important Regulatory and Installation Requirements
Working on the equipment
The installation, adjustment, service,
and maintenance of this boiler must be
performed by a licensed professional
heating contractor who is qualified
and experienced in the installation,
service, and maintenance of hot water
boilers. There are no user serviceable
parts on the boiler, burners, or control.
Ensure main power supply to
equipment, the heating system,
and all external controls has been
deactivated. Close main gas
supply valve. Take precautions in
all instances to avoid accidental
activation of power during service
work.
Technical literature
Literature for the Vitodens boiler:
- Technical Data Manual
- Installation and Service Instructions
- Operating Instructions
and User's Information Manual
- Vitodens Venting System Installation
Instructions
- Instructions of other products utilized
and installed
- Installation codes mentioned
in this manual and as locally
applicable
u The completeness and
functionality of field supplied
electrical controls and
components must be verified
by the heating contractor. This
includes low water cut-offs, flow
switches (if used), staging
controls, pumps, motorized
valves, air vents, thermostats,
etc.
u Leave all literature at the
installation site and advise
the system operator/ultimate
owner where the literature can
be found. Contact Viessmann for
additional copies.
u This product comes with several
safety instruction labels attached.
Do not remove!
Contact Viessmann immediately if
replacement labels are required.

8
5368 828 v1.6
About these Installation Instructions
Take note of all symbols and notations intended to draw attention to potential hazards or important product
information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.
u
IMPORTANT
CAUTION
Indicates an imminently hazardous
situation which, if not avoided, may
result in minor injury or product/
property damage.
uWarnings draw your attention to
the presence of potential hazards or
important product information.
uCautions draw your attention to
the presence of potential hazards or
important product information.
uHelpful hints for installation,
operation or maintenance which
pertain to the product.
uThis symbol indicates that
additional, pertinent information is
to be found.
uThis symbol indicates that other
instructions must be referenced.
WARNING
Indicates an imminently hazardous
situation which, if not avoided,
could result in death, serious injury
or substantial product/property
damage.
General Information

5368 828 v1.6
9
General Information
Applicability
IMPORTANT
The boiler serial number must be
provided when ordering replacement
parts. Both the 16-digit serial number
bar code label and the 12-digit ASME/
NB serial number correlate to each
other. Providing either serial number
is sufficient.
Model No. Serial No.
WB1B 26
7374861£££££££££
and
WB1B 35
7374862£££££££££
Product Information
Natural / propane gas-fired wall-mounted hot water heating boiler for space
heating.
For operation with constant (set-point) and outdoor temperature responsive
control in closed loop, forced circulation hot water heating circuits. An external
controller is required for DHW production.
The Vitodens 100-W comes factory set for operation with natural gas. Propane
conversion kit is included with each boiler.
Boiler model must be selected based on an accurate heat loss calculation of the
building. Ensure boiler model is compatible with connected radiation.
Vitodens 100 boilers are factory tested and calibrated. Further gas valve
adjustments are typically not required during field start-up.
Follow the Vitodens Venting System Installation Instructions to vent this boiler.
ASME/NB stamp 12-digit
serial number location
(metallic plate riveted on the heat
exchanger) H
Stainless steel Inox-Radial
heat exchanger
Serial No. location
(16-digit bar code white label
located on the boiler as shown
in this drawing)
digi
t
on the heat
adia
l
te label
as shown
Fig. 1

10
5368 828 v1.6
Mechanical Room
General Information
During the early stages of new home design, we recommend that proper
consideration be given to constructing a separate mechanical room dedicated to
gas- or oil-fired equipment including domestic hot water storage tanks.
The boiler must be located in a heated indoor space, near a floor drain, and as
close as possible to the wall.
Whenever possible, install boiler near an outside wall so that it is easy to duct
the venting system to the boiler.
Locate boiler on walls capable of supporting the weight of the boiler filled
with water (see section entitled “Technical Data" on page 75 for information
required for total boiler weight calculation). Ensure that boiler location does not
interfere with proper circulation of combustion and ventilation air of other fuel
burning equipment (if applicable) within the mechanical room.
The maximum room temperature of the mechanical room where the boiler is
located must not exceed 104° F / 40° C.
IMPORTANT
Boiler operation in marine
environments (damp, salty coastal
areas):
The service life of the boiler’s
exposed metallic surfaces, such as
the casing and fan housing, is directly
influenced by proximity to damp and
salty marine environments. In such
areas, higher concentration levels of
chlorides from sea spray, coupled
with relative humidity, can lead to
degradation of the exposed metallic
surfaces mentioned above. Therefore,
it is imperative that boilers installed
in such environments not be installed
using direct vent systems which
draw outdoor air for combustion.
Such boilers must be installed using
room air dependent vent systems;
i.e. using room air for combustion.
The indoor air will have a much lower
relative humidity and, hence, potential
corrosion will be minimized.