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30 | Application Considerations
APPLICATION CONSIDERATIONS
Well Water Systems
Copper is adequate for ground water that is not high in
mineral 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 assure the well water
quality is suitable for use with water source equipment.
(See Water Quality table on page #16) In conditions
anticipating moderate scale formation or in brackish
water a cupro-nickel heat exchanger is recommended. In
well water applications water pressure must always be
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[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)
[10] P/T Ports (optional)
[11] Line Voltage Connection
[12] Electric Heater Line Voltage Disconnect
[13] Unit Line Voltage Disconnect
8733942411 (2017/07)
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Figure # 61 Example System Set-up
Subject to change without prior notice
maintained in the heat exchanger. This can be
accomplished with either 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 and installed on the leaving
water side of coaxial to prevent water hammer. Solenoid
valves should be connected 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.(Figure #61)
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Cooling Tower/Boiler Systems
The cooling tower and boiler water loop temperature is
usually maintained between 50° F to 100 ° F to assure
adequate cooling and heating performance.
In the cooling mode, heat is rejected from the unit into
the water loop. A cooling tower provides evaporative
cooling to the loop water thus maintaining a constant
supply temperature to the unit. When utilizing open
cooling towers, chemical water treatment is mandatory
to ensure the water is free from corrosive elements. A
secondary heat exchanger (plate frame) between the
unit and the open cooling tower may also be used. It is
imperative that all air be eliminated from the closed loop
side of the heat exchanger to ensure against fouling. In
the heating mode, heat is absorbed from the water loop.
A boiler can be utilized to maintain the loop at the
desired temperature.
SM Series Heat Pump
Typical Installation shown for
illustration purposes only.
(Not actual product)
SM Series Heat Pump
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