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SM Series Heat Pump
NOTICE: Water piping exposed to extreme
low ambient temperatures is subject to
freezing.
Thread seal tape/ PTFE tape sealer should be used
when connecting to the unit to ensure against leaks
and possible heat exchanger fouling.
Consult the specification sheets for pipe
connection sizes.
Do not overtighten the connections. Flexible hoses
should be used between the unit and the rigid system to
avoid possible vibration.
Diagram shows typical
installation and is for
illustration purposes only.
Ensure access to Heat
Pump is not restricted.
[1] Line voltage disconnect (unit)
[2] Low voltage control connection
[3] P/T ports (optional)
[4] Hose kits (optional)
[5] Ball valves
[6] Supply and return line of central system
[7] Flex duct connection
[8] Hanging bracket assembly
[9] Threaded rod
[10] Hanging bracket assembly
Revised 07-17
Ball valves should be installed in the supply and return
lines for unit isolation and unit water flow balancing.
Pressure/temperature ports are recommended in both
supply and return lines for system flow balancing. Water
flow can be accurately set by measuring the water-to-
refrigerant heat exchangers water side pressure drop.
See specification sheets for water flow vs. pressure drop
information.
No unit should be connected to the supply or return
piping until the water system has been completely
cleaned and flushed to remove any dirt, piping chips or
other foreign material. Supply and return hoses should
be connected together during this process to ensure the
entire system is properly flushed. After the cleaning and
flushing has taken place the unit may be connected to
the water loop and should have all valves wide open.
(Figure #62)
Figure # 62
Application Considerations | 31
8733942411 (2017/06)
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