Viessmann Vitopend 100-W Guida rapida
Installation and service
instructions
for contractors
VIESMANN
Vitopend 100-W
Type WH1D, 10.7 to 24.8 kW and 13.2 to 31 kW
Gas system and combi boilers
for balanced flue operation
Natural gas and LPG version
For applicability, see the last page
VITOPEND 100-W
5441 429 UAE 9/2012 Please keep safe.
2
Please follow these safety instructions closely to prevent accidents and mate-
rial losses.
Safety instructions explained
Danger
This symbol warns against the
risk of injury.
!Please note
This symbol warns against the
risk of material losses and envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively
designed for qualified personnel.
■ Work on gas equipment must only be
carried out by a qualified gas fitter.
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following when working on
this system
■ all legal instructions regarding the pre-
vention of accidents,
■ all legal instructions regarding envi-
ronmental protection,
■ the Code of Practice of relevant trade
associations.
■ all current safety regulations as
defined by DIN, EN, DVGW, TRGI,
TRF, VDE and all locally applicable
standards.
If you smell gas
Danger
Escaping gas can lead to explo-
sions which may lead to serious
injury.
■ Do not smoke. Prevent naked
flames and sparks. Never
switch lights or electrical appli-
ances ON or OFF.
■ Close the gas shut-off valve.
■ Open windows and doors.
■ Remove all people from the
danger zone.
■ Notify your gas or electricity
supplier from outside the build-
ing.
■ Shut off the electricity supply to
the building from a safe place
(outside the building).
If you smell flue gas
Danger
Flue gas can lead to life-threat-
ening poisoning.
■ Shut down the heating system.
■ Ventilate the boiler room.
■ Close all doors in the living
space.
Safety instructions
Safety instructions
5441 429 UAE
3
Working on the system
■ When using gas as fuel, also close the
main gas shut-off valve and safeguard
against unauthorised reopening.
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing a separate fuse or by
means of a main isolator.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic modules can be dam-
aged by electrostatic dis-
charges.
Touch earthed objects, such as
heating or water pipes, to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a
safety function can compromise
the safe operation of your heating
system.
Replace faulty components only
with original Viessmann spare
parts.
Ancillary components, spare and
wearing parts
!Please note
Spare and wearing parts that
have not been tested together
with the heating system can com-
promise its function. Installing
non-authorised components and
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5441 429 UAE
4
Installation instructions
Preparing for installation
Product information.............................................................................................. 5
Preparing for installation....................................................................................... 5
Installation sequence
Installing the boiler and making all connections................................................... 6
Flue gas connection............................................................................................. 7
Gas connection.................................................................................................... 11
Opening the control unit casing............................................................................ 12
Electrical connections........................................................................................... 13
Service instructions
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 16
Further details regarding the individual steps....................................................... 18
Troubleshooting
Function sequence and possible faults................................................................ 35
Fault messages on the display............................................................................. 36
Repairs................................................................................................................. 38
Function description
Control and display elements............................................................................... 44
Heating mode....................................................................................................... 44
DHW heating........................................................................................................ 44
Designs
Connection and wiring diagram............................................................................ 46
Parts lists............................................................................................................ 48
Commissioning/service reports........................................................................ 57
Specification....................................................................................................... 58
Certificates
Declaration of Conformity for the Vitopend 100-W............................................... 60
Keyword index.................................................................................................... 61
Index
Index
5441 429 UAE
5
Vitopend 100-W, WH1D
Set up for operation with natural gas E.
May be converted to alternative gas types with a conversion kit.
The Vitopend 100-W should generally only be delivered to those countries specified
on the type plate. For deliveries to alternative countries, an approved contractor, on
his own initiative, must arrange individual approval in accordance with the law of the
land.
Preparing for installation
Cold water installation
ACold water connection, boiler
BDrain
CVisible discharge pipe outlet point
DSafety valve
ENon-return valve
FShut-off valve
GCold water
HSafety assembly
Safety assembly H to DIN 1988 is
required, if the mains water supply pres-
sure exceeds 10 bar, and no DHW pres-
sure reducing valve is installed (to
DIN 4753).
Only use a non-return valve or a com-
bined shut-off and non-return valve in
conjunction with a safety valve.
If a safety valve is installed, remove the
toggle from the cold water shut-off valve
of the boiler, preventing the valve being
closed manually.
Anti-water hammer device
We recommend the installation of an
anti-water hammer device near pressure
shock generators if the pipework to
which the boiler is connected comprises
taps where water hammer may be cre-
ated (e.g. pressure washers, washing
machines or dishwashers).
Preparing for installation
Product information
5441 429 UAE
Installation
6
!Please note
To prevent equipment damage,
install all pipework free of load and torque stresses.
Note
Prepare the gas, water and power connections using the installation template A
supplied.
≥ 350
Ø10
AInstallation template
Installation sequence
Installing the boiler and making all connections
5441 429 UAE
7
2.
1.
3.
2x
Flue gas connection
Prior to installation check whether a flue gas orifice plate is required (see the following
table).
Installation sequence
Installing the boiler and making all connections (cont.)
5441 429 UAE
Installation
8
Flue gas orifice plate (internal 7)
Routing Type
(de-
sign)
Bal-
anced
flue sys-
tem
24.8 kW 31 kW
Flue gas +
ventilation
air pipe
length
Re-
stric-
tor
7
Flue gas +
ventilation
air pipe
length
Re-
stric-
tor 7
mm m mm m mm
External wall con-
nection
C12x 60/100 ≤ 1 41 ≤ 1 47
> 1 ≤ 3 44 > 1 ≤ 3 —
80/125 ≤ 10 41 ≤ 6 46
> 6 ≤ 8 —
Vertical roof out-
let
C32x 60/100 ≤ 1.25 43 ≤ 2 47
> 1.25 ≤ 5 44 > 2 ≤ 3 —
80/125 ≤ 1.25 38 ≤ 1.25 44
> 1.25 ≤ 11 41 > 1.25 ≤ 6 46
> 11 ≤ 12 43 > 6 ≤ 10 —
Connection to a
concentric chim-
ney
C42x 60/100 ≤ 2 44 ≤ 2 44
Installation sequence
Flue gas connection (cont.)
5441 429 UAE
9
Routing Type
(de-
sign)
Bal-
anced
flue sys-
tem
24.8 kW 31 kW
Flue gas +
ventilation
air pipe
length
Re-
stric-
tor
7
Flue gas +
ventilation
air pipe
length
Re-
stric-
tor 7
mm m mm m mm
Flue gas over the
roof, ventilation
air from a differ-
ent pressure area
(outside wall)
C52x 60/100 ≤ 10 44 ≤ 10 44
Separate ventila-
tion air and flue
gas routing
C82x 60/100 ≤ 2 + ≤ 4 44 ≤ 2 + ≤ 4 44
80/125 ≤ 2.5 + ≤ 4.5 44 ≤ 2.5 + ≤ 4.5 44
Flue gas over the
roof, ventilation
air from a differ-
ent pressure area
(indoor air)
B22/
B32
≤ 10 41 ≤ 4 44
> 10 ≤ 14 44 > 4 ≤ 12 46
> 14 ≤ 30 46 > 12 ≤ 20 —
Installation sequence
Flue gas connection (cont.)
5441 429 UAE
Installation
10
CBA
ABoiler flue connection bend for the
horizontal installation of a flue sys-
tem 60/100
BFlue gas orifice plate
CCoaxial boiler flue connection for the
vertical installation of the flue sys-
tems 60/100 and 80/125
Install the flue system.
Flue system installation instruc-
tions
Note
An inspection piece with condensate
trap must be installed in the balanced
flue and must be connected to the con-
densate drain.
Balanced flue system 80/80 mm
Always thermally insulate the ventilation air pipe in unheated rooms.
Installation sequence
Flue gas connection (cont.)
5441 429 UAE
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5
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