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Figure 14: Example Gas Heater Wiring Diagram - 10:1 Modulation
456
WIRING DIAGRAM #191012701WD | PROA180K2A2DEADAC1B | 208‐3‐60 | SHEET 8 OF 8 | 12/10/19 DWN
LMF
CHK
LWF
.
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
GAS FURNACE POWER SUPPLY FOR 208 VOLT UNITS (BUCKBOOST TRANSFORMER)
T4
100 VA
BK‐14
BL‐14
BK‐14
BL‐14
PDB
3 Amps Fuses,
Class CC,
600volts,
Time Delay
F6
F5
EGL
XFMR1
240V
1
50VA
230 VOLT, 1‐PHASE, 60‐HERTZ POWER SUPPLY
S1 SRTN
F
L
L
240T6T07 Controller
WHT
BLK
BLK
BLK
N
L1
IND
IGNITION CONTROL
Modulating Furnace Control Panel
WIRE ALL SHIELD WIRES TO CLOSEST TB‐A or TB‐D
“GND” TERMINAL AT THE CONTROL PANEL
4
YEL
APS‐2
(HI)
3
T2
T1
HI LIMIT (1)
PUR
ROLL OUT
SWITCH A
ORG
PUR
APS‐1
AIR SWITCH‐LOW
ORG
ORG
T’stat
24V
MV
Alarm
Gnd
V2
Gnd
Syst.
APS
(PSW)
Sense
Spark
FLAME SENSOR
SPARK IGNITER
5
BLU
GRY
Series 5 Ignition Control
ORG
BLK (Com)
BLU
GRY
MP
HI
4
YEL
BLU
GRY
YEL
YEL
WIRE TO
“EGB”
24VAC Alarm
Indicator
T5
T6
SC30‐SM2AN
T15
T14
T3
T4
Maxitrol
SC30‐SM
Mod.
Valve
RED
BLK
+
‐
T8
T9
T10
T11
4
R
BK
HI LIMIT (2)
2 STG GAS VALVE
36H54
BLU
BLU
BLU
6
5
RED/W
RED/W
Control Panel 2
T2
PUR/W
PUR/W
Control Panel 2
T1
XFMR2
24V
1
50VA
ORG
BLK (Com)
24V
3
T2
T1
ROLL OUT
SWITCH B
ORG
APS‐3
YEL
T’stat
24V
MV
Alarm
Gnd
V2
Gnd
Syst.
APS
(PSW)
Sense
Spark
FLAME SENSOR
SPARK IGNITER
5
BLU
Series 5 Ignition Control
MP
HI
4
YEL
BLU
GRY
YEL
YEL
24VAC Alarm
Indicator
2 STG GAS VALVE
36H54
BLU
T8
T9
SC30‐SM2AN
PUR/W
PUR/W
L1
IND
IGNITION CONTROL (B)
6
T10
T11
SC30‐SM2AN
RED/W
RED/W
BLU
BLU
ORG
ORG
ORG
PUR
Section A
Section B
Example Drawing Only
See electrical drawing supplied by furnace
manufacture for actual wiring connection.
L1
L2
DRAFT INDUCER
T11
T12
+A6
‐A6
TB1
See ALC Page
3 +
4 Gnd
UO‐6
HR
9
5
HR
13
14
ISOLATION RELAYS
488
W
BL
See unit’s 24v
terminal board
TB1
W1
C
GY
W
L2
L1
EGL
(SEE FURNACE WIRING DIAGRAM)
H1
SPLICE
SPLICE
G‐14
GAS FURNACE #1 LINE
VOLTAGE TERMINALS
H2 H3
SPLICE
SPLICE
X2 X3
X4
H4 X1
SPLICE
BK‐14
Y‐14
PR Series Installation, Operation, and Maintenance Manual
