6
Table 3 — Output Pin and Terminal Assignments LEGEND *Circuit 1.
†Circuit 2.
**U2 is not used on 044 units.
††OFC2 on 034-048 units; OFC3 on 054-104 units.
||Used on 054-104 units only.
OUTPUT PIN-
TERMINAL NAME RATING DEVICE
J6-1 Stage 1
Compressor Relay (K1)*
24 vac
CR1
J6-2 Stage 2
Compressor Relay (K2)* U2**
J6-3 Stage 3
Compressor Relay (K3)* U1
J6-4 Compressor Relay (K4)† Not Used
J6-5 Stage 5
Compressor Relay (K5)† CR2
J6-6 Stage 6
Compressor Relay (K6)† Not Used
J6-7 Economizer Open Relay (K7) EOR
J6-8 Economizer Close Relay (K8) ECR
J5-1 Supply Fan Relay (K9)
115 vac
IFC
J5-2 Morning Warm-Up Relay (K10) HIR
J5-3 Stage 1 Condenser
Fan Relay (K11) OFC2/OFC3††
J5-4 Stage 2 Condenser
Fan Relay (K12) OFC4||
J5-5 External Alarm Relay (K13) ALM
ALM — Alarm
CR — Control Relay
ECR — Economizer Close Relay
EOR — Economizer Open Relay
HIR — Heat Interlock Relay
IFC — Indoor (Evaporator) Fan Contactor
OFC — Outdoor (Condenser) Fan Contactor
U—
Unloader
Fig. 5 — Relay Board LEGEND
CR — Control Relay
J—
Terminal Pin Connectors
K—
Relay