Page 2
G20R UNIT DIMENSIONS–INCHES (MM)
LINE VOLTAGE
(Both Sides)
AIR FLOW
RETURN
AIR
OPENING
FLUE OUTLET
(center side to side)
*19Ć5/8 (498)
**20Ć1/4 (541)
2Ć3/8
(60)
3Ć3/8
(86)
2Ć5/8
(67)
17Ć3/4
(451)
26Ć1/8
(664)
1Ć1/16
(27)
1Ć1/16
(27)
A
B
C
E
D
Supply Air
Opening
Supply Air
Opening
26Ć1/8
(664)
WHISPER HEAT
CONTROL VOLTAGE
(Left Side)
CONTROL VOLTAGE
(Right Side)
GAS PIPING INLET
(Both Sides)
53
(1346)
ă8 (203)
Right Side
11 (279)
Left Side
NOTE Ċ Supply air opening is equipped with a 5/8 in. (16 mm) flange on
sides and rear of furnace and may be bent 90
for plenum connecĆ
tion or to help in alignment with cooling coil.
ă*Dimensions before flanges are bent (as shipped).
**Dimensions after flanges are bent.
Dimension after flange (furnished) is field installed on unit.
M d l N
A
B
*C
**C
*D
**D
E
Model No.
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
G20RQ2/3(X)EĆ50
G20RQ3(X)EĆ75
16Ć1/4
413
14Ć1/8
359
10Ć3/4
273
12
305
1Ć1/2
38
2Ć1/8
54
3Ć1/8
79
G20RQ4(X)EĆ75
21Ć1/4
540
19Ć1/8
486
15Ć3/4
400
17
432
1Ć1/2
38
2Ć1/8
54
3Ć1/8
79
G20RQ3/4(X)EĆ100
21Ć1/4
540
19Ć1/8
486
15Ć3/4
400
17
432
1Ć1/2
38
2Ć1/8
54
3Ć1/4
83
G20RQ5(X)EĆ100
G20RQ3(X(EĆ125
G20RQ4/5(X)EĆ125
26Ć1/4
667
24Ć1/8
613
18Ć3/4
475
20
508
2Ć1/2
64
3Ć1/8
79
3Ć5/16
84
G20RQ4/5EĆ150
31Ć1/4
794
29Ć1/8
740
22
559
24Ć1/4
616
2Ć7/8
73
3Ć1/2
89
3Ć1/2
89
