Advertisement
ECO Status
Reset Status
Power
Call for Heat
OPEN ECO
Push Reset
ECO
RESET
STATUS
STATUS
POWER
LINE HOT
120 VAC
LINE NEU
L3
FP
IGN
IGN
GND
NEU
FLAME
SENSE
PROBE
IGNITOR
4.318
RESET
1
WARNING
DISCONNECT POWER
BEFORE SERVICING
-NOT FIELD REPAIRABLE-
REPLACE ONLY WITH
EXACT MODEL NUMBER.
EXPLOSION AND SERIOUS
INJURY COULD RESULT
1
2
11E79
E1
2
1
4
3
2
1
INPUT:120 V. 60HZ.
OUTPUT: 1.5 A @ 25 V
CALL FOR
4
3
2
1
HEAT
5.030
50B66
MV
MV
PS
HLI
COM
W500
GAS
VALVE
Figure 4 - Typical Wiring Diagram with 50B66
2
1
2
3
4
5.030 5.742
1
2
C
US
1
2
3
3
4
2
1
1
2
3 AMP FUSE
Figure 3 - 11E79-101
TH
XFMR HOT
XFMR NEU
TR
HLO
2
Motor
R1
M
4
Relay
R2
Coil
3
R3 S1
S2
DAMPER DRIVE UNIT
WIRING DIAGRAMS
4 PIN Upper Probe CONNECTOR (4A)
ECO1R
TOP ECO RETURN
UPSR
UPPER PROBE SENSOR RETURN
ECO1O
TOP ECO OUT
UPSO
UPPER PROBE SENSOR OUT
2 PIN Lower Probe CONNECTOR (2A)
LPSO
LOWER PROBE SENSOR OUT
LPSR
LOWER PROBE SENSOR RETURN
4 PIN CONNECTOR (4B)
TH
24VAC HOT
TR
24VAC RETURN
DD2
DAMPER DRIVE PIN 2 NOT USED
DD4
IGNITION (CALL FOR HEAT) PIN 4
2 PIN CONNECTOR (2B)
L1
LINE HOT
L2
LINE NEUTRAL
11E79
TH
4B-1
2B-1
L1
L2
2B-2
TR 4B-2
DD4
4B-4
DD2
4B-3
1
During Standby M ode, the Damper Motor
is energized to close the damper.
S1 - Damper Open Switch
S2 - Damper Closed Switch
2
1
4
3
Viewed from wire side
2
1
Viewed from wire side
4
3
2
1
Viewed from wire side
Mates with AMP
Connector 1-480702-0
and pin 350547-1
1
2
Viewed from wire side
Mates with AMP
Connector 1-480698-0 and
socket 350550-1
7A20-1
4A-3
4A-4
3A
Fuse
4A-2
24 VAC
4A-1
TOP
PROBE
K2
K1
7A20-2
Reset
2A-1
2A-2
BOTTOM
PROBE
3
Advertisement
