Application considerations | 43SM Series Heat Pump
6 720 220 406 (2013/1)SM Series Heat Pump
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 insure
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.
Consult the specification sheets for piping sizes.
Teflon tape sealer should be used when
connecting to the unit to insure against leaks and
possible heat exchanger fouling. Do not
overtighten the connections. Flexible hoses should
be used between the unit and the rigid system to
avoid possible vibration. 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 #106)
Figure # 106
[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
Geothermal Systems
Closed loop and pond applications require
specialized design knowledge. No attempt at these
installations should be made unless the dealer has
received specialized training. Utilizing the Ground
Loop Pumping Package (GLP), makes the
Water piping exposed to extreme low
ambient temperatures is subject to
freezing.
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