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Figure 13: Example Gas Heater Wiring Diagram - 5:1 Modulation
456
WIRING DIAGRAM #191100601WD | PROA150C2A2DAADAD4B | 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
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493
494
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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
Example Drawing Only
See electrical drawing supplied by
furnace manufacture for actual
wiring connection.
RELAY COIL
NORMALLY OPEN CONTACTS
IDENTIFIABLE TERMINAL
NORMALLY CLOSED CONTACTS
HEATER‐FACTORY WIRING
EARTH GROUND
CHASSIS (PANEL) GROUND
SYMBOL LEGEND
POWER SUPPLY TERMINAL CONNECTION
Isolation Relays TERMINAL BOARD
FACTORY WIRING
TIMER RELAY‐ TR1‐090LH15
EGL
T1
240V
1
CLASS 2
50/60 HZ
230 VOLT, 1‐PHASE, 60‐HERTZ POWER SUPPLY
L2
S1 SRTN
F
L
L
240T6T07 Controller
WHT
BLK
BLK
BLK
L1
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
COM
T1
T2
T3
T5
T6
T4
T8
T9
T7
24V
HAPS
EST
R1
E Valve
Maxitrol
SC‐40
J1
Open
T11 (+)
T10 (‐)
YEL
BLU
APS‐2
AIR SWITCH‐HIGH
3
(+)
(‐)
(+)
(‐)
24V SIG
EXA
Valve
T2
T1
HR
9
5
BLU
HI LIMIT
PUR
ROLL OUT
SWITCH NO. 1
ROLL OUT
SWITCH NO. 2
ORG
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
BLU
BLU
BLU
Series 5 Ignition Control
ORG
BLK (Com)
DRAFT INDUCER
BLU
GRY
LO
HI
4
YEL
YEL
BLU
GRY
YEL
YEL
YEL
0‐10VDC Analog Input
(Polarity Sensitive)
ON
1 2 3 4
WIRE TO
“EGB”
4
BK
R
24VAC Alarm
Indicator
HR
13
14
ISOLATION RELAYS
497
W
BL
See unit’s 24v
terminal board
TB1
W1
C
+A6
‐A6
TB1
BCTL
BL
See ALC Page
4 Gnd
3 +
GY
W
UO‐6
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
