A.O. Smith BTF-75 Manuale Utente
2
ROUGH-IN-DIMENSIONS
FOREWORD
The design of model BTF-75 complies with the latest version of
ANSI Z21.10.3/CSA 4.3 M98 as automatic storage or automatic circulating
tank type water heaters.
ANSI Z21.10.3/CSA 4.3 M98 as automatic storage or automatic circulating
tank type water heaters.
Installation diagrams are found in this manual. These diagrams will serve
to provide the installer with a reference for the materials and method of
piping necessary. It is highly essential that all water and gas piping be
installed as shown on the diagrams.
to provide the installer with a reference for the materials and method of
piping necessary. It is highly essential that all water and gas piping be
installed as shown on the diagrams.
In addition to these instructions, the equipment shall be installed in
accordance with those installation regulations in force in the local area
accordance with those installation regulations in force in the local area
where the installation is to be made. These shall be carefully followed
in all cases. Authorities having jurisdiction should be consulted before
installations are made.
in all cases. Authorities having jurisdiction should be consulted before
installations are made.
The installation must conform to these instructions and the local code
authority having jurisdiction. In the absence of local codes, the installation
must comply with the latest editions of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54. The NFPA. This is available from the Canadian
Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH
44131, or the National Fire Protection Association, 1 Batterymarch Park,
Quincy, MA 02269.
authority having jurisdiction. In the absence of local codes, the installation
must comply with the latest editions of the National Fuel Gas Code,
ANSI Z223.1/NFPA 54. The NFPA. This is available from the Canadian
Standards Association, 8501 East Pleasant Valley Road, Cleveland, OH
44131, or the National Fire Protection Association, 1 Batterymarch Park,
Quincy, MA 02269.
FIGURE 1
*INSTALL IN ACCORDANCE WITH LOCAL CODES
TOP VIEW
ALL DIMENSIONS IN INCHES
Model Units
A
B
C
D
E
F
G
H
J
K
L
M
BTF-75 Inches 66 5/16 58 1/2
29 5/8
25 3/8 15 3/16
4
14
16
1 1/4
1
1/2
11 15/16
cm
168.4
148.6
75.2
64.5
38.6
10.2 35.6 40.6
3.2
NPT
NPT
30.3
RECOVERY CAPACITIES
Input
Approx.
Approx.
Temp. °C
17
22
28
33
39
44
50
56
61
67
72
78
Model
Rating
Rating
Gal.
Liter
Btu/Hr
KW/Hr
Cap.
Cap.
Rise ° F
30
40
50
60
70
80
90
100
110
120
130
140
BTF-75
80,000
23.4
74
284
LPH
979
734
587
489
419
367
326
294
267
245
226
210
GPH
259
194
155
129
111
97
86
78
71
65
60
55
Recovery capacity based on 80% thermal efficiency.