General Description | 5SM Series Heat Pump
6 720 220 406 (2015/02)Revised 02-15
GENERAL DESCRIPTION
SM Series Water-to-Air Heat Pumps provide the
best combination of performance and efficiency
available. All units are performance certified to
American Heating and Refrigeration Institute
(AHRI) ISO Standard 13256-1. All SM Water-to-Air
Heat Pumps conform to UL1995 standard and are
certified to CAN/CSA C22.2 No 236 by Intertek-
ETL. The Water-to-Air Heat Pumps are designed to
operate with entering fluid temperature between
20°F to 90°F in the heating mode and between
30°F to 120°F in the cooling mode
.
SM Series Water-to-Air Heat Pumps are available in
Vertical (VT), Horizontal (HZ) and Counter-Flow
(CF) configurations. VT units are field convertible
for three discharge/supply air orientations and
left-hand (LH) or right-hand (RH) return
configurations. HZ units have two field
configurable discharge/supply air orientations.
Several factory installed options are available: Hot
Gas Reheat, Electric Heat, Heat Recovery Package,
Smart Start Assist, Constant Airflow Blower Motor,
DPS Water Flow Proving Switch, Auxiliary Pump
Relay, and Comfort Alert Module. Electric Heat and
Smart Start Assist are also available as field
installed accessory. See Pg#37 for more detail.
Safety devices are built into each unit to provide
the maximum system protection possible when
properly installed and maintained. Each unit has
externally mounted LCD error code display,
allowing unit diagnosis without opening the
cabinet.
Basic Horizontal unit layout and connections are
shown in Figure #3 . Refer to Dimensional
Drawings for further detail, as well as Vertical and
Counter Flow unit details. Pg#95 through Pg#95
Figure # 3
[1] LCD Error Code Display
[2] Air handler access panel
[3] Condensing section access panel
[4] Condensate drain connection
[5] Water connection
[6] Heat Recovery water connection (Optional)
[7] Heat Recovery disconnect switch (Optional)
[8] Electrical connection knockout
NOTE: Heat Pump operating under extreme
conditions will have limitation on air/fluid flow
rates and/or temperatures.
NOTE: 50° F Minimum Entering Water
Temperature (EWT) is recommended for well
water applications with sufficient water flow to
prevent freezing. Antifreeze solution is required
for all closed loop applications and EWT below
45°. Cooling Tower/Boiler and Geothermal
applications should have sufficient antifreeze
solution to protect against extreme conditions
and equipment failure. Frozen water coils are
not covered under warranty. Other equivalent
methods of temperature control are acceptable.
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