Specifications

Piping | 5SM CS Series Heat
8 733 920 846 (2014/01)Revised 01-14
Air Handler
Locate the air handler unit in an indoor area that
allows easy removal of the filter and access panels,
and has enough room for service personnel to
perform maintenance or repair. Provide sufficient
room to make electrical and duct connections. If
the unit is located in a confined space such as a
closet, provisions must be made for return air to
freely enter the space. On horizontal units, allow
adequate room below the unit for a condensate
drain trap.
Vertical units should be mounted level on a
vibration absorbing pad slightly larger than the
base to minimize vibration transmission to the
building structure. It is not necessary to anchor the
unit to the floor. (Figure #3).
Figure # 3
PIPING
Supply and return piping must be as large as the
unit connections on the heat pump (larger on long
runs).
SM units are supplied with either a copper or
optional cupro-nickel condenser. Copper is
adequate for ground water that is not high in
mineral content.
In conditions anticipating moderate scale
formation or in brackish water a cupro-nickel heat
exchanger is recommended.
Both the supply and discharge water lines will
sweat if subjected to low water temperature.
These lines should be insulated to prevent damage
from condensation. All manual flow valves used in
the system must be ball valves. Globe and gate
valves must not be used due to high pressure drop
and poor throttling characteristics.
Always check carefully for water leaks and repair
appropriately. Units are equipped with female pipe
thread fittings. Consult Unit Dimensional
Drawings. (Pg#91 through Pg#95)
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.
The air handler units are not approved for
outdoor installation; therefore, they must be
installed inside the structure being conditioned.
Do not locate in areas that are subject to
freezing.
Reference the Factory Manual for your AH or
the Air Handler section of this manual for
detailed installation and operation.
Never use flexible hoses of a smaller inside
diameter than that of the fluid connections
on the unit.
Proper testing is recommended to assure the
well water quality is suitable for use with water
source equipment. When in doubt, use cupro-
nickel.
VIBRATION
PAD FULL
Never exceed the recommended water flow
rates as serious damage or erosion of the
water-to-refrigerant heat exchanger could
occur.
Teflon tape sealer should be used when
connecting water piping connections to the units
to insure against leaks and possible heat
exchanger fouling.
Do not overtighten the connections.