6
111079-01 - 12/20
FR
Installation & Service Manual
Boiler Series
Boiler Series
Dimensions - Inches
Dimensions - Inches
Approx. Water
Approx. Water
Content - Gallons
Content - Gallons
A
A
B
B
C
C
D
D
E
E
F
F
G
G
FR-HGS
31-7/8
19-7/8
18-3/8
25-3/4
31-3/8
3-1/8
5-7/8
9.5
FR-122
FR-122
37-7/8
37-7/8
19-7/8
19-7/8
18-3/8
18-3/8
25-1/4
25-1/4
30-1/2
30-1/2
3-7/8
3-7/8
5-7/8
5-7/8
20.0
20.0
FR-147/173
46-5/8
21-7/8
21-5/8
30-1/4
35-3/4
5-3/8
6-7/8
40.0
FR-205/232
FR-205/232
51-1/8
51-1/8
21-7/8
21-7/8
25-7/8
25-7/8
29-3/4
29-3/4
40-3/4
40-3/4
6-1/8
6-1/8
7-7/8
7-7/8
46.0
46.0
Table 1-1: Dimensional Data (see Figures 1A and 1B)
Table 1-2: Rating Data
Boiler
Series
Boiler Model
Burner
Capacity
Heating
Capacity
MBH (2)
Net Ratings
Water, MBH
(3)
AFUE
%
Minimum Chimney
Requirement
GPH
MBH
(1)
Round
In. Dia.
Rectangle
In. x In.
Height
Ft.
FR-HGS
* FRHGSL
0.80
112
100
87
87.8
6
8 x 8
15
FRHGS
1.00
140
122
106
86.3
6
8 x 8
15
FR-122
FR-122E
1.00
140
121
105
86.0
6
8 x 8
15
FR-122ET
FR-147
FR147
1.25
175
154
134
86.7
7
8 x 8
15
FR-173
*FR-173E
1.50
210
182
158
86.0
7
8 x 8
15
*FR-173ET
FR-205
FR205
1.75
245
215
187
86.0
8
8 x 8
15
FR-232
*FR-232E
1.90
266
231
201
86.0
8
8 x 8
15
*FR-232ET
* Field Converted
Maximum Allowable Working Pressure = 30 PSI
(1) MBH refers to thousands of BTU per hour
(2) Based on Standard Test prescribed by the United States Department of Energy at Combustion
conditions of 13.0% CO
2
(3) Net AHRI ratings based on a piping and pickup allowance of 1.15.
1
General Information
(continued)