Manual
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
knockout is sized 11/4" in diameter.
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.
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.
F,GU.Eio
Typical Wiring Installation
Unit Line Voltage
Wires Knockout
Ground
Lug
Access hole for
low voltage
Knockout for unit
field supplied line
voltage wires
31-10-16
Heater
Ground Lug
FIGURE 11
HEATER
MODEL
AMMH!0AHB
withfuses
AMMH!5AHB
withfuses
Accessory Electric Heater Electrical Data
Used With
3,4, 5Ton
3,4,5Ton
Supply Voltage
240-3-60
208-3-60
240-3-60
208-3-60
KW Rating
9.9
7.4
14.4
10.8
Nominal Heating
BTUH
33,788
25,341
49,147
36,860
Supply
Circuit No,
L4 - L5-L6
L4 - L5-L6
L4, L5, L6
L4, L5, L6
Heater
Amps
24.1
20.9
34.7
30.1
Mininum Circuit
Ampacity
30.2
26.2
43.4
37.7
MaximumOvercurrent
ProtectiveDevice
(Amps)
45
3O
45
40
FIGURE 12 Acceesor'
Heater
Model
AMMH10AHB
withfuses
AMMH15AHB
withfuses
Electric Heater Temperature Rise
*Temperature Rise°F @ CFM
UseWith Supply Voltage 600 800 1000 1200 1400 1600 1800 2000 2200
3, 4, 5 Ton 240-3-60 52.1 39.1 31.3 26.1 22.3 19.6 17.4 15.6 14.2
208-3-60 38.9 29.2 23.3 19.5 16.7 14.6 12.9 11.7 10.6
3, 4, 5 Ton 240-3-60 59.6 45.5 37.9 32.5 28.4 25.2 22.7 20.7
208-3-60 56.8 42.6 34.1 28.4 24.3 21.3 18.9 17.0 15.5
* Do not exceed 60 ° F temperature dee on heater.
427 O1 1OO500