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T6380
Fig. 4b – T6383B: 2-pipe, heat/cool, auto changeover, with aux.
Fig. 5c – T6381A: 2-pipe, heat/cool, auto-changeover, cycled fan
electric heat, constant fan
.
AQUASTAT
T6381A
TO HEAT/ COOL
VALVE
WHT
L2(NEUTRAL)L1(HOT)
Med (BLU)
Hi (BRN)
Lo (RED)
BLK
SYSTEM
FAN
Heat
Off
Cool
Heat (ORG)
Cool (YEL)
To internal heat/cool
circuits
HI
MED
LO
FAN
.
W
R
B
W
R
B
T6383B
TO SUPPLEMENTARY
HEAT
FAN
(RED)
(BRN)
Off
1
2
3
WHT
(VIO)
FAN
External jumper
(BLU)
L2 (NEUTRAL)
HI
MED
LO
L1 (HOT)
Heat (ORG)
Cool (YEL)
W
R
B
TO HEATING
/
COOLING VALVE
Fig. 5a – T6381A: 2-pipe, cooling only, cycled fan
Fig. 6 – T6381B: 2-pipe, heat/cool, manual changeover, cycled
fan
T6381A
T6381B
FAN
(RED)
(BRN)
Heat (ORG)
Cool (YEL)
Off
1
2
3
WHT
(VIO)
TO COOLING
VALVE
BLK
External jumper
(BLU)
L2
HI
MED
LO
L1 (HOT)
.
WHT
L2(NEUTRAL)
L1(HOT)
(BLU)
(BRN)
(RED)
BLK
SYSTEM
FAN
Heat
Off
Cool
Heat (ORG)
Cool (YEL)
FAN
HI
MED
LO
TO HEATING/COOLING
VALVE
External jumper
FAN
(NEUTRAL)
Fig. 5b – T6381A: 2-pipe, heating only, cycled fan
Fig. 7a – T6381B: 4-pipe, heat/cool, manual changeover, cycled
fan
T6381A
T6381B
FAN
(RED)
(BRN)
Heat (ORG)
Cool (YEL)
Off
1
2
3
WHT
(VIO)
TO HEATING
VALVE
BLK
(BLU)
L2
(NEUTRAL)
HI
MED
LO
.
WHT
L2(NEUTRAL)
L1(HOT)
(BLU)
(BRN)
(RED)
BLK
SYSTEM
FAN
Heat
Off
Cool
Heat (ORG)
Cool (YEL)
HI
MED
LO
TO COOLING
VALVE
L1 (HOT)
FAN
TO HEATING
VALVE
External jumper
FAN
4