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DIMENSIONS
INCHES
MODEL GG SERIES — HOT WATER
GG-75H GG-100H GG-125H GG-150H GG-175H GG-200H GG-225H GG-250H GG-275H GG-300 GG-325 GG-350 GG-350H GG-375H GG-399H
A JACKET WIDTH 13
3
/
16
13
3
/
16
13
3
/
16
16
9
/
16
16
9
/
16
19
15
/
16
19
15
/
16
23
5
/
16
23
5
/
16
26
11
/
16
26
11
/
16
30
1
/
16
30
1
/
16
30
1
/
16
30
1
/
16
B DRAFT HOOD HEIGHT 46
3
/
8
53
1
/
4
53
1
/
4
53
1
/
4
53
1
/
4
57
1
/
2
57
1
/
2
59
5
/
8
59
5
/
8
59
5
/
8
59
5
/
8
66
1
/
8
66
1
/
8
59
5
/
8
62
5
/
8
C FLUE COLLAR DIAMETER 5 6 6 6 6 7 7 8 8 8 8 9 9 10 10
D JACKET TOP TO DRAFT HOOD 6
3
/
4
13 13 13 13 16 16 17 17 17 17 22
1
/
2
22
1
/
2
15 18
E CIRCULATOR RETURN FLANGE 1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
G RIGHT SIDE TO SUPPLY 2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
2
3
/
4
H FRONT TO SUPPLY 9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
9
1
/
4
GAS VALVE CONNECTION—Size is
1
⁄2" f.p.t. for all models, except GG-250 and larger, which are
3
⁄4" f.p.t.
A JACKET WIDTH 16
9
/
16
16
9
/
16
19
15
/
16
19
15
/
16
19
15
/
16
23
5
/
16
23
5
/
16
23
5
/
16
23
5
/
16
26
1
/
16
26
1
/
16
26
1
/
16
16
1
/
2
16
1
/
2
20 23
1
/
4
B DRAFT HOOD HEIGHT 46
5
/
8
53
1
/
4
55
1
/
2
55
1
/
2
55
1
/
2
55
1
/
2
56
5
/
8
55
1
/
2
56
5
/
8
55
1
/
2
55
1
/
2
59
1
/
8
—— — —
C FLUE COLLAR DIAMETER 5 6 7 7 7 7 8 7 8 7 7 9 5 5 6 7
D JACKET TOP TO DRAFT HOOD 6
3
/
4
13 14 14 14 14 14 14 14 14 14 15
—— — —
E CIRCULATOR RETURN FLANGE 1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
4
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
1
1
/
2
—— — —
F TANKLESS COIL CONNECTIONS
1
/
2
1
/
2
1
/
2
1
/
2
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
3
/
4
1
/
2
1
/
2
1
/
2
3
/
4
G RIGHT SIDE TO SUPPLY 3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
3
1
/
2
H FRONT TO SUPPLY 9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
9
3
/
4
GAS VALVE CONNECTION—Size is
1
⁄2" f.p.t. for all models, except GXH-230 and larger, which are
3
⁄4" f.p.t.
DIMENSIONS
INCHES
MODEL GX and GXH SERIES
HOT WATER WITH TANKLESS HEATER — LOW PRESSURE STEAM WITH OPTIONAL TANKLESS HEATER
GXH-105 GXH-125 GXH-150 GXH-170 GXH-190 GXH-210 GX-225 GXH-230 GX-250 GXH-250 GXH-275 GXH-300H
GXHA-120 GXHA-160 GXHA-200
G
ALAX
Y
®
High efficiency, cast-iron gas boiler
GXHA-100
MODEL GXHA SERIES
LOW PRESSURE STEAM WITH OPTIONAL TANKLESS HEATER
VENT TAPPING:
1
⁄2" for all water models.
† Standing pilot.
§ Crates for all models are 30" wide, 38" high, depth 30” (GG-75 through GG-225) and (GXH-105 through GXH-190), 38” (GG-250 through GG-399), 40-1/4" (GXH-210 through GXH-300).