Viessmann VITODENS 100-W Installation And Service Instructions Manual page 32

Boiler Connections
Installation Examples
Wiring diagram for system layout 4
A
K1
R
R
X1
X1
R
Power Pump Module
A1
Honeywell Aquastat L4008A1031
Vi.PN. 9560985 for DHW Control
TANK AQUASTAT
R(T)
W(T)
C
(OPTIONAL)
L1
120VAC/ L
1PH N
1
Power Supply. Provide disconnect means and overload protection as required
1
The heating circuit pump logic output of Vitotronic 050 is used to energize the T.T output of PPM. Therefor using a
2
room thermostat in series with RT input of the boiler will reduce unnecessary calls initiated by pump logic output of
the Vitotronic to the Vitodens 100 boiler
DHW has priority over heating circuit
3
If no priority is required for DHW demand, supply power to terminals L1, L2 of RA889A relay of heating circuit
4
32
(continued)
R
RT
DHW
X4
24V
120V
PUMP
K1
F1 T
6,3A
X3
X2
C
X1
HONEYWELL SWITCHING RELAY
RA889A-1001
X2
L2 N.0. A
COM
3
DOMESTIC HOT
WATER PUMP
(see also ) and NO PRIORITY over Heating Circuit
4
E
2
ROOM THERMOSTAT
L
120VAC/
1PH
N
1
LOW TEMP HEATING CIRCUIT PUMP
USED WITH MIXING VALVE
ROOM THERMOSTAT
R(T)
W(T)
C
(OPTIONAL)
L1 L2
1 4
HIGH TEMP HEATING CIRCUIT PUMP
(mixing valve)
F
[20] [40]
L N
N L
D
F1 F2 L
Vitotronic 050, Model HK1M
L
G
N
Digital Indoor/ Outdoor
Heating Circuit Control Unit
R1 R2
T
& Power Pump Module
T
Vi.PN 7134627
See Installation Instruction
specific to each control
G L L L G N L G N
N
120VAC/
L
1PH
1
B
X1
Honeywell Switching Relay
RA889A-1001 for heating
X2
circuit
E
N.0. COM A
24V Field Wiring
120V Field Wiring
Factory wiring
E B