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8
ELECTRIC HEATER PACKAGE OPTION:
CAUTION:
The HP series heater package requires its own
electrical service separate from the heat pump's power
supply. DO NOT attempt to wire the package into the
same circuit as the heat pump.
Factory or field installed internal electric ES heater
packages are available for all series units. Two power
supplies are required when heater packages are utilized.
The power supply for the heater package (located in the
electric heater package control box) provides power for
the heater elements, the blower motor and the control
circuit for the unit. The power supply for the unit provides
power for the compressor. This allows the electric heaters
to continue to operate along with the blower motor in the
case of unit compressor and/or compressor power supply
failure. See HP Series Heater Kit Instructions for field
installations.
Each ES Series model has a number of heater sizes
available. Refer to Figure #9 for heater package
compatibility with specific ES Series units, models
nomenclature and electrical data.
SEQUENCE OF OPERATION-SINGLE STAGE UNITS:
(Figure #13 Wire Schematic)
COOLING MODE:
Energizing the "O" terminal energizes the unit reversing
valve in the cooling mode. The fan motor starts when the
"G" terminal is energized. Note that the fan motor will take
ENVIROSAVER
MODEL
ES018 thru 042
H
ES048 thru 071
H
ES018 thru 042
H
ES048 thru 071
H
ES024 thru 042
H
ES048 thru 071
H
ES048 thru 071
H
ES048 thru 071
H
All heaters rated single phase 60 Hz, and include unit fan load. All fuses type "D" time delay or HACR type breaker or HRC FORM 1
Wire size based on 60 deg. C copper conductors.
6720220330 Revised 05-12
HEATER
KW
MODEL
HP050-1XS
4.8
HP050-1XM
4.8
HP075-1XS
7.2
HP075-1XM
7.2
HP100-1XS
9.6
HP100-1XM
9.6
HP150-1XM
14.4
HP150-1XM
14.4
HP200-1XM
19.2
HP200-1XM
19.2
30 seconds to ramp up to operating speed and will run at
fan only air flow as long as there is no call for compressor
or heater operation.
When "Y1" in the unit ("Y" on the thermostat) is energized
the compressor starts and the unit is now cooling.
Solenoid valves or loop pumps are brought on in
conjunction with the compressor.
When the thermostat is satisfied, the compressor shuts
down and the fan ramps down. If the "G" terminal is still
energized (fan operation is on "continuous" at the
thermostat) the fan will ramp down to fan only air flow in
30 seconds. If the "G" terminal is de-energized with "Y1"
then the fan ramps down to off in 30 seconds.
HEATING MODE:
Heating operation follows the same sequence as cooling
only without the "O" terminal. During heating operation if
the thermostat calls for auxiliary heat ("W1"), the fan
ramps up to auxiliary heat air flow immediately and the
electric heaters are energized (if installed) along with the
compressor. Note that if the unit compressor locks out for
any reason at this time, the electric heaters will continue
to function normally.
Emergency heat (W2/EM) energizes the emergency heat
relay in the heater control box, bringing on all of the
heating elements at once. The fan immediately ramps up
to full electric heat air flow.
As in cooling, once the thermostat is satisfied, the fan
will ramp back down over a period of 30 seconds.
(Figure #9)
HEATER
CIRCUIT
AMPS
208V
240V
17.3
20.0
L1/L2
17.3
20.0
L1/L2
23.6
30.0
L1/L2
23.6
30.0
L1/L2
34.7
40.0
L1/L2
34.7
40.0
L1/L2
52.0
60.0
SINGLE
34.7
40.0
L1/L2
17.3
20.0
L3/L4
69.3
80.0
SINGLE
34.7
40.0
L1/L2
34.7
40.0
L3/L4
MCA
MAX
FUSE
208V
240V
208V
240V
27.1
30.4
30
30
27.1
30.4
30
30
34.9
42.9
40
45
35.7
43.8
40
45
48.8
55.4
50
60
49.5
56.3
50
60
71.2
81.3
80
90
49.5
56.3
60
60
21.7
25.0
25
25
92.9
106.3
100
110
49.5
56.3
50
60
43.4
50.0
45
50
AWG
MIN
8
8
8
8
6
6
4
6
10
2
6
6
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