Carrier 48HC D17 Series User Manual

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Fig. 19 -- Humidi--MiZer Reheat Control Board I/O
Point Name Type Connection
Pin Numbe r
Unit
Connection
Note
Humidistat/LTLO DI, 24VAC J 1 A --- 1 ( 1 ) LTLO
Thermostat W1 DI, 24VAC J 1 A --- 2 ( 2 ) C T B --- R E H E A T --- 4
Econ Y1 DI, 24VAC J 1 A --- 6 ( 6 ) C T B --- R E H E A T --- 5
Thermostat G DI, 24VAC J 1 B --- 1 ( 7 ) C T B --- R E H E A T --- 1
24V Power (J1) 24VAC J 1 B --- 3 ( 9 ) C T B --- R
24V Power (J2) 24 VAC J 2 --- 1 C T B --- R
Econ Y2 DI, 24VAC J 1 B --- 5 ( 1 1 ) C T B --- R E H E A T --- 7 2 --- c i r c o n l y
COMP1 DO, 24VAC J 1 A --- 5 ( 5 ) C T B --- H E A T --- 6
IFM DO, 24VAC J 1 B --- 4 ( 8 ) C T B --- R E H E AT --- 2
COMP2 DO, 24VAC J 1 B --- 4 ( 1 0 ) C T B --- R E H E A T --- 8
LSV DO, 24VAC J 2 --- 2 FTP (BLK)
DSV1 DO, 24VAC J 2 --- 3 DSV
NOT LSV DO, 24VAC J 2 --- 4 2 --- c i r c o n l y
DSV2 DO, 24VAC J 2 --- 5 2 --- c i r c o n l y
LEGEND
COMP --- C o m p r e s s o r
CTB --- Control Terminal Board..
DI --- Discrete Input (switch)...
DO --- Discrete Output (switch)...
DSV --- Discharge (gas) Solenoid Valve..
Econ --- Economizer.
FPT --- Freeze Protection Thermostat..
IFM --- Indoor (Supply) Fan motor..
LSV --- Liquid Solenoid Valve..
LTLO --- Low Temperature Lockout.
REHEAT ---Connection Strip REHEAT (on CTB)..
Fig. 20 -- Inputs/Modes/Outputs Summary
Y1 Y2 W1 G HUM/
LTLO
MODE COMP1 COMP2 IFM LSV1 LSV2 LSV
NOT
DSV1 DSV2
OFF OFF OFF ON OFF Normal Fan OFF OFF ON=G OFF OFF ON=R OFF OFF
ON OFF OFF On OFF Normal Cool1 ON=Y1 OFF ON=G OFF OFF ON=R OFF OFF
ON ON OFF ON OFF Normal Cool2 0N=Y2 ON ON=G OFF OFF ON=R OFF OFF
OFF OFF ON X OFF Normal Heat 1 OFF OFF ON=G OFF OFF ON=R OFF OFF
OFF OFF OFF ON ON Reheat Dehumidify ON ON ON=G ON ON OFF ON=R ON=R
ON OFF OFF ON ON Subcool
Cir1/
Reheat
Cir2
Cool1 and
Cool2/Subcool---
Dehumidify
ON ON ON=G ON ON OFF OFF ON=R
ON ON OFF ON ON Subcool
Cir1 and
Cir2
Cool1 and
Cool2/Subcool---
Dehumidify
ON ON ON=G ON ON OFF OFF OFF
OFF OFF ON X ON Heat Over-
ride
Heat 1 OFF OFF ON=G OFF OFF ON=R OFF OFF
OFF OFF ON+
W2
X ON Heat Over-
ride
Heat 1 and 2 OFF OFF ON=G OFF OFF ON=R OFF OFF
48HC

Carrier 48HC D17 Series Specifications

General

Brand	Carrier
Model	48HC D17 Series
Category	Air Conditioner
Language	English