Specific Application Considerations; Well Water Systems - Bosch QV Series Installation, Operation And Maintenance Manual

QV Series Heat Pumps
SPECIFIC APPLICATION
CONSIDERATIONS

Well Water Systems

(Refer to Fig. 12)
Refer to the Water Qualify Table on page #24 to
ensure the water quality is suitably for use with
water source equipment. In conditions of brackish
water or where moderate scale formation is
anticipated, a cupro-nickel heat exchanger is
required. In well water applications, water
pressure must always be maintained in the heat
exchanger to avoid insufficient water flow. This
can be accomplished with a control valve or a
bladder-type expansion tank. When using a single
Fig. 12 Typical Well Water Setup
[1] Flex Duct Connection
[2] Low-Voltage Control Connection
[3] Vibration Pad
[4] Ball Valves
[5] Solenoid Valve Slow Closing
[6] Condensate Drain Connection
[7] Drain Valves
[8] Hose Kits (optional)
[9] Pressure Tank (optional)
QV Series Heat Pumps
water well to supply both domestic water and the
heat pump care must be taken to ensure that the
well can provide sufficient flow for both. In well
water applications a slow-closing solenoid valve
must be used to prevent water hammer.
Connect the solenoid valves across Y1 and C1 on
the interface board for all. Make sure that the VA
draw of the valve does not exceed the contact
rating of the thermostat.
[10] P/T Ports (optional)
[11] Line Voltage Connection
[12] Electric Heater Line Voltage Disconnect
[13] Unit Line Voltage Disconnect
Subject to change without prior notice

Specific Application Considerations | 19

For Reference Only.
A typical setup is shown
for illustration purposes
8733829041 (2021/07)