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Heat Controller, Inc. HTV/HTD/HTH SERIES Engineering Design Guide
26
Heat Controller GeoMax 2
Geothermal Heat Pump Systems
Auxiliary Electric Heat
TT
36
Tranquility
27™ (TT) Series
ClimateMaster : Smart. Responsible. Comfortable.
Auxiliary Heat Electrical Data
Auxiliary Heat Ratings
Auxiliary Electric Heat
Auxiliary Electric
Heat Model
HT kW Rating Btuh Rating Minimum
CFM
Required
024 036 048 060 070 230V 208V 230V 208V
AGM5A 4.8 3.6 16300 12300 500
AGM8A 7.6 5.7 25900 19400 650
AGM10A 9.6 7.2 32700 24600 650
AGM12A 11.4 8.6 38900 29200 750
AGL10A 9.6 7.2 32700 24600 1300
AGL15A 14.4 10.8 49100 36900 1350
AGL20A 19.2 14.4 65500 49200 1350
Grey area denotes compatibility
Note: Horizontal units rated for zero clearance unit and 1” clearance for the first three feet of duct,
vertical units rated for zero clearance for both unit and duct.
Auxiliary Electric
Heat Model
Supply
Circuit
Heater Amps
Minimum
Circuit Amps
Maximum Fuse Supply Wire
230V 208V 230V 208V 230V 208V
Min
AWG
Max Ft
AGM5A Single 20.0 17.3 25.0 21.6 25 25 10 70
AGM8A Single 31.7 27.5 39.6 34.4 40 35870
AGM10A Single 40.0 34.7 50.0 43.4 50 45690
AGM12A
Single 47.5 41.2 59.4 51.5 60 60670
Dual - L1/L2
Dual - L3/L4
31.7
15.8
27.5
13.7
39.6
19.8
34.4
17.1
40
20
35
20
8
12
70
50
AGL10A Single 40.0 34.7 50.0 43.4 50 45680
AGL15A
Single 60.0 52.0 75.0 65.0 80 70650
Dual - L1/L2
Dual - L3/L4
40.0
20.0
34.7
17.3
50.0
25.0
43.4
21.6
50
25
45
25
6
10
80
70
AGL20A
Single 80.0 69.3 100.0 86.6 100 90 2 100
Dual - L1/L2
Dual - L3/L4
40.0
40.0
34.7
34.7
50.0
50.0
43.4
43.4
50
50
45
45
6
6
80
80
All heaters rated single phase 208-230V 60Hz Wire length based on one way measurement with 2% voltage drop
Wire size based on 60°C (90*C)copper conductor Part numbers with “H” included are for horizontal units only
All models 12kW or larger feature internal circuit breakers All Fuses UL Class K general purpose
TT
Tranquility
27™ (TT) Series
Auxiliary Heat Electrical Data
Auxiliary Heat Ratings
Auxiliary Electric Heat
Auxiliary Electric
Heat Model
TT kW Rating Btuh Rating Minimum
CFM
Required
026 038 049 064 072 230V 208V 230V 208V
AGM5A 4.8 3.6 16300 12300 500
AGM8A 7.6 5.7 25900 19400 650
AGM10A 9.6 7.2 32700 24600 650
AGM12A 11.4 8.6 38900 29200 750
AGL10A 9.6 7.2 32700 24600 1300
AGL15A 14.4 10.8 49100 36900 1350
AGL20A 19.2 14.4 65500 49200 1350
Grey area denotes compatibility
Note: Horizontal units rated for zero clearance unit and 1” clearance for the first three feet of duct,
vertical units rated for zero clearance for both unit and duct.
Auxiliary Electric
Heat Model
Supply
Circuit
Heater Amps
Minimum
Circuit Amps
Maximum Fuse Supply Wire
230V 208V 230V 208V 230V 208V
Min
AWG
Max Ft
AGM5A Single 20.0 17.3 25.0 21.6 25 25 10 70
AGM8A Single 31.7 27.5 39.6 34.4 40 35870
AGM10A Single 40.0 34.7 50.0 43.4 50 45690
AGM12A
Single 47.5 41.2 59.4 51.5 60 60670
Dual - L1/L2
Dual - L3/L4
31.7
15.8
27.5
13.7
39.6
19.8
34.4
17.1
40
20
35
20
8
12
70
50
AGL10A Single 40.0 34.7 50.0 43.4 50 45680
AGL15A
Single 60.0 52.0 75.0 65.0 80 70650
Dual - L1/L2
Dual - L3/L4
40.0
20.0
34.7
17.3
50.0
25.0
43.4
21.6
50
25
45
25
6
10
80
70
AGL20A
Single 80.0 69.3 100.0 86.6 100 90 2 100
Dual - L1/L2
Dual - L3/L4
40.0
40.0
34.7
34.7
50.0
50.0
43.4
43.4
50
50
45
45
6
6
80
80
All heaters rated single phase 208-230V 60Hz Wire length based on one way measurement with 2% voltage drop
Wire size based on 60°C (90*C)copper conductor Part numbers with “H” included are for horizontal units only
All models 12kW or larger feature internal circuit breakers All Fuses UL Class K general purpose
HGM5A
HGM8A
HGM10A
HGM12A
HGL10A
HGL15A
HGL20A
HGM5A
HGM8A
HGM10A
HGM12A
HGL10A
HGL15A
HGL20A
Note: Vertical units rated for zero clearance for both unit and duct.
23
Two Stage Geothermal Heat Pump Systems