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SM Series Heat Pump
OPTIONS
Number of factory installed options are available on SM
Series of Heat Pumps. The following details the purpose,
function and components of each option.
Electric Heat
I
nternally mounted supplemental electric heat is
available on select models of the SM series. Electric
heating elements can operate along with reverse cycle
heating as auxiliary heat or in lieu of mechanical heating
(refrigeration heating) as emergency backup heat.
Availability matrix, including available nominal kW
capacities is shown below:
KW
Heater
Model
208V
230V
HK050-1201
3.6
HK100-1201
7.2
HK150-1201
10.8
HK200-1201
14.4
x Available
Heat Recovery Package (HRP)
The heat recovery package is a factory installed option
on SM series of heat pumps. The HRP can be used to
heat potable water during unit operation heat which
would otherwise be wasted from the compressor
discharge gas. In some cases the HRP could maintain
water heater set point temperature requirements for a
typical home.
The HRP consists of three major components:
•
Double wall, vented refrigerant to water heat
exchanger
•
Circulating pump
•
Control circuit
The heat exchanger is rated for use with potable water
and is acceptable for use as a domestic water heating
device in most building codes.
The pump circulates water between the domestic hot
water tank and HRP heat exchanger in the Heat Pump.
The control circuit ensures that the HRP only operates
when there is available heat from the compressor and
when the water is within a safe temperature range of
below 140 deg F.
For schematics on HRP please see pg# 27.
Revised 07-17
Stgs
Btu/h
208V
230V
4.8
1
12300
16300
9.6
2
24600
32700
14.4
2
36900
49100
19.2
2
49200
63400
Internal mounted Electric Heat is only available on
top blow vertical cabinets, end blow horizontal
cabinet or on down blow counterflow cabinets.
In cases where Electric Heat is not available in a
desired configuration but is needed, contact your
distributor for available Duct Mounted Electric Heat
Package.
NOTICE: Units with internal electric heat
must have 2 field power supplies.
Product Series Compatibility
SM024
SM036
SM048
x
x
x
x
x
When the heat pump compressor operates, the HRP will
monitor the temperature of the discharge gas from the
compressor. Once discharge gas is hot enough to
provide useful heat to the domestic water tank, the
circulating pump will be enabled, drawing water from
the tank, through the HRP heat exchanger and then
depositing the heated water back into the tank. If the
water temperature reaches 140 deg F, the circulating
pump is disabled to prevent over heating of the
domestic water. The HRP is provided with an on/off
switch in case the end user desires that the HRP be
inactivated (typically during the winter months when
space heating is most important).
Valve Relay
The factory installed pump relay can be used to energize
a supply pump or solenoid valve when there is a call for
compressor operation. This relay can be used to switch
either high or low voltage power.
Options | 23
SM060
SM070
x
x
x
x
x
x
x
x
x
x
x
x
8733942411 (2017/06)
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