Carrier 50TC-D25 - Page 14

14
CONDENSER COIL
HUMIDI-MIZER COIL
EVAPORATOR COIL
COMPRESSOR
OUTDOOR AIR
INDOOR AIR
RH2.x
VALVE
RH1.x
VALVE
TXV
VALVE
= CLOSED VALVE
= OPEN VALVE
= 3-WAY VALVE
C07124A
Fig. 18 − Hot Gas Reheat Mode (Reheat 2) – Humidi−MiZerR System
Table 2 – Humidi−MiZerR 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) 24 VAC 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)