Bryant Preferred Series User Manual

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Table 2 — Perfect Humidity Reheat Control Board I/O
POINT NAME TYPE CONNECTION PIN NUMBER UNIT CONNECTION NOTE
Humidistat/LTLO DI, 24VAC J1A-1 (1) LTLO
Thermostat W1 DI, 24VAC J1A-2 (2) CTB-REHEAT-4
Econ Y1 DI, 24VAC J1A-6 (6) CTB-REHEAT-5
Thermostat G DI, 24VAC J1B-1 (7) CTB-REHEAT-1
24V Power (J1) 24VAC J1B-3 (9) CTB-R
24V Power (J2) 24VAC J2-1 CTB-R
Econ Y2 DI, 24VAC J1B-5 (11) CTB-REHEAT-7 2-circ only
COMP1 DO, 24VAC J1A-5 (5) CTB-HEAT-6
IFM DO, 24VAC J1B-4 (8) CTB-REHEAT-2
COMP2 DO, 24VAC J1B-4 (10) CTB-REHEAT-8
LSV DO, 24VAC J2-2 FTP (BLK)
DSV1 DO, 24VAC J2-3 DSV
NOT LSV DO, 24VAC J2-4 2-circ only
DSV2 DO, 24VAC J2-5 2-circ only
LEGEND
COMP — Compressor
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)
Table 3 — 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 ON=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 Override Heat 1 OFF OFF ON=G OFF OFF ON=R OFF OFF
OFF OFF ON+W2 X ON Heat Override Heat 1 and 2 OFF OFF ON=G OFF OFF ON=R OFF OFF
Table 4 — Perfect Humidity Troubleshooting
PROBLEM CAUSE REMEDY
Subcooling Reheat Mode Will Not
Activate
General cooling mode problem. See Cooling Service Troubleshooting (Table 5).
No dehumidification demand. See No Dehumidification Demand, below.
CRC relay operation. See CRC Relay Operation, below.
Circuit RLV, CLV or LDV valve problem. See CLV, RLV or LDV Valve Operation, below.
Hot Gas Reheat Mode Will Not
Activate
General cooling mode problem. See Cooling Service Troubleshooting (Table 5).
No dehumidification demand. See No Dehumidification Demand, below.
CRC relay operation. See CRC Relay Operation, below.
Circuit RLV, CLV or LDV valve problem. See CLV, RLV or LDV Valve Operation, below.
Circuit RDV valve is not open. See RDV Valve Operation, below.
Outdoor temperature too low.
Check Reheat2 Circuit Limit Temperatures
(ConfigurationHMZRRA.LO and RB.LO) using
ComfortLink Scrolling Marquee.

Bryant Preferred Series Specifications

General

Brand	Bryant
Model	Preferred Series
Category	Air Conditioner
Language	English