International comfort products PH55 Series Installation Instructions Manual page 7

1. Shut OFF electric power at unit disconnect or service panel.
2. Install the appropriate field supplied conduit fitting into the
heater knockout located in the rear panel of the unit. The
1
knockout is sized 1 / ² in diameter.
4
3. Connect field installed copper ground wire to the ground lug
on the heater mounting plate.
4. Route the field supplied line voltage wires through the con-
duit, up the left corner from field supplied disconnect to top of
heater. Leave approximately 8" of excess wire so the wiring
harness may be moved to service. Make line connections to
L1, L2, L3 on the fuse panel.
Typical Wiring Installation
FIGURE 10
Access hole for
low voltage wires
FIGURE 11 Accessory Electric Heater Electrical Data
HEATER
MODEL Used With
AMMH10AHB 3, 4, 5 Ton
with fuses
AMMH15AHB 3 , 4, 5 Ton
with fuses i h f
FIGURE 12 Accessory Electric Heater Temperature Rise
Heater
Model Use With
AMMH10AHB 3, 4, 5 Ton
with fuses
AMMH15AHB 3, 4, 5 Ton
with fuses
* Do not exceed 60° F temperature rise on heater.
Supply Voltage KW Rating
240--3--60 9.9
208--3--60 7.4
240--3--60 14.4
208--3--60 10.8
Supply Voltage 600
240--3--60 52.1
208--3--60 38.9
240--3--60 --
208--3--60 56.8
5. Connect the black wire with terminal from the heater wire
harness to the loose black wire at the unit blower or appropri-
ate speed tap if lower speed is desired in electric heat mode.
NOTE: Do not exceed 60° F temperature rise on heater.
6. Connect the red wire with terminal in the heater wire harness
to the loose red wire from the unit sequencer / relay.
7. Connect the white wire from the heater wire harness to the
white wire from the thermostat at the field supplied low volt
wire harness in the control box.
8. Connect the grey wire from the heater wire harness to the
blue wire from the unit 24V common.
Nominal Heating Supply
BTUH Circuit No.
33,788 L4 -- L5--L6
25,341 L4 -- L5--L6
49,147 L4, L5, L6
36,860 L4, L5, L6
*Temperature Rise °F @ CFM
800 1000 1200
39.1 31.3 26.1
29.2 23.3 19.5
59.6 45.5 37.9
42.6 34.1 28.4
7
Unit Line Voltage
Wires Knockout
Ground
Lug
Knockout for unit
field supplied line
voltage wires
Heater
Ground Lug
Maximum Overcurrent
Heater Mininum Circuit
Amps Ampacity
24.1 30.2
20.9 26.2
34.7 43.4
30.1 37.7
1400 1600 1800
22.3 19.6 17.4
16.7 14.6 12.9
32.5 28.4 25.2
24.3 21.3 18.9
427 01 1005 00
Protective Device
(Amps)
45
30
45
40
2000 2200
15.6 14.2
11.7 10.6
22.7 20.7
17.0 15.5