York AHP18 User Manual
255029-YTG-M-0610
10
Johnson Controls Unitary Products
2. Heaters are 3 Phase.
COOLING MODELS WITH ELECTRIC HEAT WIRING
*
Optional dehumidification humidistat switch contacts open on humidity rise.
Notes:
1. “Y” Terminal on Air Handler Control Board must be connected for full CFM and applications requiring 60 second blower off delay for SEER
enhancement.
2. Move HUM STAT Jumper on AH Control Board to YES position if Humidistat is used.
3. MODE Jumper on AH control board should be set to A/C for air conditioners.
1. “Y” Terminal on Air Handler Control Board must be connected for full CFM and applications requiring 60 second blower off delay for SEER
enhancement.
2. Move HUM STAT Jumper on AH Control Board to YES position if Humidistat is used.
3. MODE Jumper on AH control board should be set to A/C for air conditioners.
ELECTRICAL DATA (FOR SINGLE SOURCE POWER SUPPLY) - COPPER WIRE 208/230-3-60
Models
Heat Kit -
Three Phase
Heater
Amps
240V
Field Wiring
Min. Circuit Ampacity
Max. O.C.P.
1
Amps/Type
75°C Wire Size - AWG
208V
240V
208V
240V
208V
240V
AHP24B**H21
4HK06501025
23.1
27.1
31.3
30
35
10
8
AHP30B**H21
4HK06501025
23.1
26.8
30.8
30
35
10
8
4HK065N1525
34.7
40.0
46.1
40
50
8
8
AHP36C**H21
4HK06501025
23.1
27.5
31.6
30
35
10
8
4HK06501525
34.7
40.0
46.1
40
50
8
8
AHP42C**H21
4HK06501025
23.1
29.1
33.4
30
35
10
8
4HK06501525
34.7
41.6
47.9
50
50
8
8
4HK06501825
41.4
48.9
56.3
50
60
8
6
AHP48D**H21
4HK06501025
23.1
29.3
33.6
30
35
10
8
4HK06501525
34.7
41.8
48.1
50
50
8
8
4HK06501825
41.4
49.0
56.5
50
60
8
6
AHP60D**H21
4HK06501025
23.1
34.5
38.4
35
40
8
8
4HK06501525
34.7
47.0
52.9
50
60
8
6
1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
ELECTRICAL DATA (FOR MULTI SOURCE POWER SUPPLY) - COPPER WIRE 208/230-3-60
Models
Heater
Model
Minimum Circuit Ampacity
Max. O.C.P.
1
Amps/Type
75°C Wire Size - AWG
Circuit
1st
2nd
3rd
1st
2nd
3rd
1st
2nd
3rd
208/240
208/240
208/240
208/240
208/240
208/240
208/240
208/240
208/240
AHP60D**H21
4HK16501825
31.9/35.4
22.4/25.9
–/–
35/40
25/30
–/–
8/8
10/10
–/–
4HK16502525
40.8/45.6
31.3/36.1
–/–
45/50
35/40
–/–
8/8
8/8
–/–
1. O.C.P. = Over Current Protection device, must be HACR type Circuit Breaker or Time Delay fuse.
COOLING MODELS WITH ELECTRIC HEAT WIRING
MA SERIES - Air Handler Control Wiring
Typical A/C - Cooling only Applications
THERMOSTAT
AIR HANDLER
BOARD
1 - STAGE
AIR CONDITIONING
R
R
G
Y
W1
W2
C
G
W1
W2
Y
C
Y / Y2
Y1
O
HUM
X / L
COM
HUMIDISTAT *
THERMOSTAT
AIR HANDLER
BOARD
1 - STAGE
AIR CONDITIONING
R
R
G
Y
W1
W2
C
G
W1
W2
Y
C
Y / Y2
Y1
O
HUM
X / L
COM
HUMIDISTAT *
MA SERIES - Air Handler Control Wiring
Typical A/C with Electric Heat Applications