Specific Application Considerations
6 Specific Application Considerations
6.1 Well Water Systems
(Refer to Fig. 6)
A copper heat exchanger is adequate for ground water that is not
high in m
ineral content. Should your well driller express concern
regarding the quality of the well water available or should any
known hazards exist in your area, we recommend proper testing
to ensure the well-water quality is suitable for use with water
source equipment. In conditions of brackish water or where
moderate scale formation is anticipated, a cupronickel heat
exchanger is required. Refer to the Water Quality Table on
page #22 to ensure the water quality is suitably for use with
water source equipment.
In well water applications, water pressure must always be
m
aintained
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 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.
Fig. 6 Typical Well Water Setup
For Reference Only.
A typical setup is shown for
illustration purposes only.
1
2
3
5
7
8
4
6
[1] Flex Duct Connection
[2] Solenoid Valve, Slow Closing
[3] Pressure Tank (optional)
[4] Ball Valves
[5] Condensate Drain Connection
[6] P/T Ports (optional)
[7] Line Voltage Connection
[8] Low-Voltage Control Connection
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EC Series Heat Pumps — 8733841499 (2024/05)
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