Raypak 910500 Owner's Manual And Installation Instructions page 67

Power for up to 3 pumps – DHW Pump, Water Heater Pump and System Pump - can be supplied from
the MVB.
The maximum current draw will depend on the number of pumps used, the size of pumps employed
and the manner in which they are connected, ie directly powered by the MVB for single phase pumps
up to 8A each or indirectly powered via a contactor for 3 phase pumps or single phase pumps exceeding
8A each. Refer to Table 19
Note: whilst the MVB can control the System Pump in hydronic applications, this will only be on an
on/off basis and not variable speed control.
MVB Applications up to 71
Model
Water Heater
Pump Model
910500 UPS 32-80
910750 UPS 32-80
911000 Magna 1 40-120
911250 Magna 1 40-120
911500 Magna 1 40-120
911750 Magna 1 65-150
912000 Magna 1 65-150
PUMP CONNECTIONS
Connect pumps to the terminals marked R1, R2, R3 as appropriate:
R1 = Water Heater (Boiler) Pump – Primary pump for W models directly connected to a storage tank in
DHW applications and primary pump for all H model applications.
R2 = DHW Pump – Indirect DHW pump for H models where an indirect DHW system is connected.
R3 = System Pump (optional) - H models for controlling the flow of water in the system (refer to System
Modes). Optional for W models for controlling the building return pump (operates only on a tank call for
heat).
Refer to Applications and Modes
FIELD
WIRING
on page 67 for pump electrical requirements.
o
C
Electrical
Requirements
220W / 0.98A
220W / 0.98A
463W / 2.05A
463W / 2.05A
463W / 2.05A
1263W / 5.53A
1263W / 5.53A
Table 19: Pump Electrical Requirements
commencing on page 52 for description of pumps and their use.
Fig 34: Mains Power and Pump Wiring Connections
Applications >71
Water Heater
Pump Model
UPS 32-80
Magna 1 40-120
Magna 1 40-120
Magna 1 40-120
Magna 1 65-150
Magna 1 65-150
Magna 1 65-150
FACTORY
WIRING
67
o
C
Electrical
Requirements
220W / 0.98A
463W / 2.05A
463W / 2.05A
463W / 2.05A
1263W / 5.53A
1263W / 5.53A
1263W / 5.53A