ORIFICE SIZES indicated for Sea Level are factory installed in boiler unless other-
wise specified by the local authority.
See page 15 for burner adjustment.
GAS VALVE CONNECTION Size is 1/2" f.p.t. for all sizes up to and including GG-
125 and GXH-125 depending upon configuration (natural, L.P., IID). Larger boilers,
gas valves are 3/4".
COMBUSTIBLE FLOOR KIT increases all height dimensions by 51 mm (2").
RAISED SLAB—When mounting boiler on a raised slab, the slab must extend at
least 51 mm (2") beyo
nd the boiler cabinet on all sides.
CHIMNEY HEIGHT: 4.5 m (15 ft.) minimum from draft hood skirt to top of chimney.
CHIMNEY INSIDE DIAMETER must be same as Dimension “C” or larger. Larger
diameter and/or height may be required if two or more boilers or a boiler and
another appliance are vented to a single chimney.
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-375 GG-375H GG-399H
Field Control (Effikal) Vent Damper
C H I
127mm 152mm 122mm
(5") (6") (4-13/16")
152mm 165mm 135mm
(6") (6-1/2") (5-5/16")
178mm 179mm 149mm
(7") (7-1/16") (5-7/8")
203mm 205mm 175mm
(8") (8-1/16") (6-7/8")
228mm 276mm 225mm
(9") (10-7/8") (8-7/8")
254mm 327mm 276mm
(10") (12-7/8") (10-7/8")
GXHA-100 GXH-105 GXH-125GXHA-120 GXH-150 GXH-170GXHA-160 GXH-190 GXH-210GXHA-200 GXH-230 GXH-250 GXH-275 GXH-300 GXH-300H
32
1
/
2
26
1
/
16
8
67
5
/8
25
14
3
/4
1
1
/4
2
1
/
2
3
1
/2
9
3
/
4
3
/4
32
1
/
2
26
1
/
16
9
59
1
/8
15
14
3
/4
1
1
/4
2
1
/
2
3
1
/2
9
3
/
4
3
/4
GXH SERIES STEAM AND HOT WATER BOILERS - DIMENSIONS IN MM FOLLOWED BY INCHES
19
3
/4
13
3
/16
5
46
3
/8
6
3
/
4
8
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
502
335
152
1353
330
203
70
235
19
3
/4
13
3
/16
6
53
1
/4
13
8
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
502
335
152
1353
330
203
70
235
19
3
/4
13
3
/16
6
53
1
/4
13
8
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
584
421
152
1353
330
248
70
235
23
16
9
/16
6
53
1
/4
13
9
3
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
584
421
152
1353
330
248
70
235
23
16
9
/16
6
53
1
/4
13
9
3
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
673
506
178
1461
406
286
70
235
26
1
/2
19
15
/16
7
57
1
/2
16
11
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
673
506
178
1461
406
286
70
235
26
1
/2
19
15
/16
7
57
1
/2
16
11
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
756
592
203
1514
432
330
70
235
29
3
/4
23
5
/16
8
59
5
/8
17
13
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
756
592
203
1514
432
330
70
235
29
3
/4
23
5
/16
8
59
5
/8
17
13
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
845
662
203
1514
432
375
70
235
33
1
/4
26
1
/16
8
59
5
/8
17
14
3
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
845
662
203
1680
432
375
70
235
33
1
/4
26
1
/16
8
66
1
/8
17
14
3
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
927
764
229
1680
572
413
70
235
36
1
/2
30
1
/16
9
66
1
/8
22
1
/
2
16
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
927
764
229
1680
572
413
70
235
36
1
/2
30
1
/16
9
66
1
/8
22
1
/
2
16
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
927
764
254
1680
381
413
70
235
36
1
/2
30
1
/16
10
66
1
/8
22
1
/
2
16
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
927
764
229
1680
381
413
70
235
36
1
/2
30
1
/16
9
66
1
/8
22
1
/
2
16
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
927
764
254
1680
457
413
70
235
36
1
/2
30
1
/16
10
66
1
/8
22
1
/
2
16
1
/
4
1
1
/4
1
1
/
2
2
3
/4
9
1
/4
2 GALAXY
GG SERIES HOT WATER BOILERS—DIMENSIONS IN MM FOLLOWED BY INCHES
GG Natural 42 43 43
Except GG-399H Propane 54 55 55
GG-399H
Natural 40 42 42
Propane 53 54 54
GXH-105 Natural 44 43 45
through 275 Propane 54 55 55
GXH-300
Natural 43 44 44
Propane 55 54 56
GXH-300H Natural 43 44 44
GG-350H Gas*
BOILER MODEL GAS TYPE
ORIFICE SIZES AT HIGH ALTITUDES
610 to 1219 m
(2000 to 4000 ft.)
1219 to 1372 m
(4000 to 4500 ft.)
Orifice Size for
Sea Level
*For L.P. Propane gas, consult factory.
FRONT VIEW
All GG and GXH
Alternate 1-1/2"
return (except
GG-75 thru
GG-175
Pressure Relief
Valve
3/4"
273 mm
(10
3
/
4")
832 mm
(32
3
/4")
Install Man-
ual Shut-
Off Valve
1524 mm (5
ft.) Above
When
Required
By Local
Code
622 mm
(24
1
/
2
")
57 mm
(2
1
/4")
57
mm
(2
1
/4")
419 mm
(16
1
/2")
318
mm
(12
1
/
2
")
660
mm
(26")
70
mm
(2
3
/
4
"
)
1-1/4"
Tapping on
Steam Boilers
673 mm
(26
1
/2")
660
mm
(26")
152 – 327 mm (6 – 12-7/8")
1/2" Vent
Tapping
RIGHT SIDE
GG / GXH-PT
RIGHT SIDE
GXH-PZT-PPZT
RIGHT SIDE
GXH--PZ-PZT-PPZT
Tankless Heater
Connections "L"
except GXH-PZ
Tankless Heater
Connections "L"
GXH-PT only
RIGHT SIDE
GG / GXH-PT
FRONT VIEW
All GG and GXH
LEFT SIDE
All GG and GXH
RIGHT SIDE
GXH-PZ
A
B
C
D
E
F
G
H
J
K
A
B
C
D
E
F
G
H
J
K
L
M
584
421
127
1178
171
248
89
248
23
16
9
/
16
5
46
3
/8
6
3
/4
9
3
/4
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
1
/
2
419
127
254
16
1
/
2
5
10
419
127
254
16
1
/
2
1
/
4
5
10
584
421
152
1353
330
248
89
248
23
16
9
/
16
6
53
1
/4
13
9
3
/4
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
1
/
2
673
506
178
1410
356
286
89
248
26
1
/
2
19
15
/
16
7
55
1
/2
14
11
1
/4
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
1
/
2
673
506
178
1410
356
286
89
248
26
1
/
2
19
15
/
16
7
55
1
/2
14
11
1
/4
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
1
/
2
673
506
178
1410
356
286
89
248
26
1
/
2
19
15
/
16
7
55
1
/2
14
11
1
/4
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
1
/
2
756
592
178
1410
356
286
89
248
29
3
/
4
23
9
/
16
7
55
1
/2
14
11
1
/4
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
3
/
4
727
28
5
/8
727
28
5
/8
508
152
298
20
6
11
727
28
5
/8
756
592
178
1410
356
330
89
248
29
3
/
4
23
9
/
16
7
55
1
/2
14
13
1
1
/4
2
1
/
2
3
1
/
2
9
3
/4
3
/
4
826
662
178
1410
356
375
89
248
32
1
/
2
26
1
/
16
7
55
1
/
2
14
14
3
/
4
1
1
/4
2
1
/2
3
1
/2
9
3
/4
3
/
4
826
662
178
1410
356
375
89
248
32
1
/
2
26
1
/
16
7
55
1
/2
14
14
3
/4
1
1
/4
2
1
/
2
3
1
/2
9
3
/
4
3
/4
826
662
203
1718
635
375
89
248
826
662
229
1502
381
375
89
248
502
335
127
1178
171
203
70
235
337 mm
(13
1
/4")
76
mm
(3")
184 mm
(
2
1
/4"
)
648 mm
(25
1
/2")
419 mm
(16
1
/
2
")
184
mm
(7
1
/4
")
70 mm
(2
3
/
4
")
Return Tap-
ping G on
right side of
boiler
318 mm
(12
1
/
2
")
3
/4
591
178
343
23
7
13
727
28
5
/8
1
/2
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