Viessmann Vitodens 100-W WB1B Series Installation And Service Instructions Manual page 42

Connections
Installation Examples
Wiring diagram for system layout 4
Power Pump Module
Honeywell Aquastat L4008A1031
Vi.PN. 9560985 for DHW Control
TANK AQUASTAT
(OPTIONAL)
120 VAC/
1PH
1 P 1 P 1 P 1 Power Supply. Provide disconnect means and overload
protection as required protection as required
2 The heating circuit pump logic output of Vitotronic 2 The heating circuit pump logic output of Vitotronic 2 The heating circuit pump logic output of Vitotronic 2 The heating circuit pump logic output of Vitotronic
050 is used to energize the TT output of PPM.
Therefor using a 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
3 DHW has priority over heating circuit E (see also 4 )
3 DHW has priority over heating circuit 3 DHW has priority over heating circuit 3 DHW has priority over heating circuit
and NO PRIORITY over Heating Circuit F (mixing
valve)
4 If no priority is required for DHW demand, supply 4 If no priority is required for DHW demand, supply 4 If no priority is required for DHW demand, supply 4 If no priority is required for DHW demand, supply
power to terminals L1, L2 of RA889A relay of heating
circuit EB
42
(continued)
RT
DHW
HONEYWELL SWITCHING
RELAY RA889A-1001
DOMESTIC HOT
WATER PUMP
(see also 4 ) (see also 4 ) (see also 4 )
Vitodens 100-W, WB1B Installation & Service
ROOM THERMOSTAT
1PH
LOW TEMP HEATING CIRCUIT PUMP
USED WITH MIXING VALVE
(OPTIONAL)
HIGH TEMP HEATING CIRCUIT PUMP
Vitotronic 050, Model HK1M
Digital Indoor/ Outdoor
Heating Circuit Control Unit
& Power Pump Module Vi.PN
7134627 See Installation
Instruction specific to each
control
1PH
Honeywell Switching
Relay RA889A-1001
for heating circuit E
24V Field Wiring
120V Field Wiring
Factory Wiring