Viessmann Vitodens 100-W WB1C User manual

Note on installation
forheating engineers
System boiler wiring instructions
for Vitodens 100-W, Typ WB1B & Typ WB1C
TheVitodens100-Wsystemboiler
offersseveralinstallationalterna-
tives.
From traditional 'Y' or 'S' plan
(2-pipe system) to weather compen-
sated 4-pipe system connected to an
un-vented DHW cylinder using the
integral expansion vessel and diverter
valve.
The advantages of connecting the
system boiler to a 4-pipe system are
as follows:
• The DHW circuit operates indepen-
dently of the CH circuit
• Dual temperature control, which
means the CH circuit can be
operated on weather compensated
system (reduced flow temperature)
• Usingtheboilerstemperature
cut-outdeviceandintegraldiverter
valve to protect the cylinder from
overheating.
5414 394 8/2009/14

Option 1: 4-pipe system using an un-vented cylinder
®
©
@
M
Radiators
® Boiler
© DHW-cylinder
@ Motorisedvalve(Energycut-out)
Viessmann 4-pipe system
Note:It isrecommendedthatthe
coil output of the cylinder is greater
than 10 kW to prevent long hot water
re-heat periods.
DHW has priority.
The boiler is factory fitted with an 8 l
expansion vessel, pressure safety
valve (3 bar) and diverter valve.
If an existing or third party un-vented
cylinder is used in conjunction with
theVitodens100-Wsystemboilera
2- port(Energycut-out)valvemaybe
fittedinthe DHW circuit. Inthis case
the2-portvalve,cylinderthermostat
andtimer has tobe electrically wired
through the provided control box
(seewiringexample).
2
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Electrical wiring example for Option 1
With existing CH/DHWprogrammer
®
Terminals in the control unit
® Cylinderdemand terminalbox
© Cylinder thermostat
@ Safetytemperaturesensor
® Valve
® Roomthermostat(clockthermo-
stat)
@ Terminalbox(onsite)
@ Powersupply230V,50Hz
3
5
@
®
©
@
@
®
5414 394

Electrical wiring example for Option 1 (cont.)
With Viessmann Vitotrol100, RF/RF2 or standard room thermostat
Terminals in the control unit
® Cylinderdemand terminalbox
© Cylinder thermostat
@ Safetytemperaturesensor
® Valve
OtherViessmannsecondarycontrols
(existing programmer to be
omitted)- see separate matrix.
• Weather compensation + 2-channel
digital timer
® Roomthermostat(clockthermo-
stat)
@ Terminalbox(onsite)
@ Powersupply230V,50Hz
• Vitotrol100,RF1 - analog;DHW
time function limited (either as CH
orconstant)
• Vitotrol100,RF2 - digital;2-chan-
nelwithCHand DHWtime control
options.
4
5
@
®
©
@
@
®
®
5414 394

Option2:4-pipe system with open vented cylinder
Viessmann 4-pipe system with open vented hot water or with Vitocell
unventedcylinder
Radiators
® Boiler
© OpenventDHW-cylinderor
Vitocell
Note:It isrecommendedthatthe
cylinder coil output is greater
than 10 kW to prevent long hot water
re-heat periods.
DHW has priority.
The primary circuit is sealed system.
The boiler is factory fitted with an 8 l
expansion vessel, pressure safety
valve (3 bar) and diverter valve.
5
®
©
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Electrical wiring example for option 2
®
� Tanksensorconnection
(sensorisoptional - partno.7178348)
Outside temperature sensor
(accessory)
® OpenThermdevice
© Connection Line (accessory)
@ Jumper(removewhenconnecting
aroomthermostat)
® Powersupply
(230V,50Hz)
® Vitotrol100
(room temperature ontroller)
OtherViessmannsecondarycontrols
(existing programmer to be
omitted)- see separate matrix
• Weather compensation + 2-channel
digital timer
• Vitotrol100,RF1 - analog;
DHW time function limited (either
as CH or constant)
• Vitotrol100,RF2 - digital;
2-channelwithCHandDHWtime
control options.
6
@
X1
CN2
X21
X
7
GAS PUMP FAN
@ L N 1 L N
X20
©
�
® ®
4 3 2 1
OT
5414 394

Option3: Traditional 'Y' or 'S'-plan system (2-pipe)
Schematic Sealed Primary System
®
Radiators
® Boiler
© DHW-cylinder
@ Motorisedvalve
® Pump
® Gauge
@ Expansion vessel
@ Savetyvalve
Note: Schematic shows safety valve,
expansion vessel, pressure gauge
and pump being external of the
boiler. The Vitodens 100-W system
boiler has all these components
already factory fitted.
7
® ®
@ @
©
@
M
®
M
5414 394

Electrical wiring example - S-plan system with Vitodens 100-W
® ®
M M
1- 1-
© @
L N @
S1
@
M
N
1-
L
@
@
®
L
N
1
L
N
X1
CN2
Power supply 230 V, 50 Hz
® Timecontroller
© Roomthermostat(clockthermo-
stat)
@ Cylinderthermostat
® Zonevalve
® Pump
X9 Terminals in the control unit
� Pump connection
Viessmann Werke GmbH&CoKG
D-35107 Allendorf
Telefon:[phone]
Telefax: 06452 70-2780
www.viessmann.de
8
5414 394
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