A.O. Smith QOS1001 Specifications
Commercial Gas Water Heaters
TANK-TYPE WATER HEATERS
FEATURES
All models meet the thermal effi ciency and standby loss requirements of the U. S. Department of
Energy and Current Edition ASHRAE/IESNA 90.1.
GLASSLINED TANK — Maximizes tank life.
FULLY AUTOMATIC CONTROLS WITH SAFETY SHUTOFF — Accurate, dependable
control system requires no electric connections. Fixed automatic gas shutoff device for added
safety. Not recommended for 180°F sanitizing.
HEAVY GAUGE STEEL JACKET — Finished with baked enamel over bonderized undercoat.
FOAM INSULATION — Saves fuel, helps reduce standby heat loss.
BT-65, 80 & 100
CERTIFICATION — BT-65 units are design-certifi ed by CSA. Certifi ed for installation on
combustible fl ooring.
LOW NOx — Complies with Texas and other districts requirements for NOx emissions less
than 40 ng/j.
EASY-TO-INSTALL — Completely factory-assembled. Only gas, water and vent connections
need be made. All connections are located in front and top of heaters for ease of installation
and service.
DRAFT DIVERTER — Low profi le diverter furnished as standard equipment.
MAXIMUM WORKING PRESSURE — 150 psi.
MAXIMUM GAS INLET PRESSURE — 14” W.C.
HANDHOLE CLEANOUT — On models BT-80 & BT-100. Allows easy tank cleaning.
THREE YEAR LIMITED WARRANTY — For complete warranty information, consult written
warranty or contact A. O. Smith.
OTHER FEATURES
Built-in gas fi lter and integral dirt leg (propane only)
Anodic protection
Equipped with gas pressure regulator
Integral automatic gas shutoff system prevents excessive water temperature
CSA Certifi ed and ASME Rated T&P Relief Valve
RECOVERY CAPACITIES
TEMPERATURE RISE
70°F/
80°F/
39°C
45°C
86
75
326
284
104
91
392
343
104
91
392
343
Models
BT-65
BT-80
BT-100
Approx.
Gal’s.
65 246
74 280
98
Cap.
Litres
371
Input
Btu/Hr.
65,000
55,000
75,100
75,100
Rating
KW/Hr.
19.018GPH
22
22
Type
of
Gas
LPH
GPH
LPH
GPH
LPH
30°F/
17°C
200
758
243
916
243
916
40°F/
22°C
150
569
182
686
182
686
50°F/
28°C
120
455
146
550
146
550
60°F/
33°C
100
379
121
456
121
456
90°F/
50°C
67
254
81
305
81
305
100°F/
56°C
60
227
73
275
73
275
Low Lead Content
BT-65 BT-80 AND 100
110°F/
120°F/
130°F/
67°C
61 °C
54
205
66
249
66
249
72°C
50
190
61
230
61
230
46
174
56
211
56
211
140°F/
78°C
43
163
52
196
52
196
Revised April 2013
Page 1 of 2
AOSCG10600
Commercial Gas Water Heaters
TOP VIEW
HOT WATER OUTLET
TOP VIEW
BT-80 & 100 FRONT VIEWBT-65 FRONT VIEW
Dimensions in Inches/Centimeters
Model Units A B C D E F G H J K L M
BT-65 Natural and
Propane
BT-80 Natural
and LP
BT-100 Natural
and LP
Inches 65 60 1/2 24 15-1/2 8 4 11-1/2 25-1/2 54-1/4 3/4 1/2 ----
CM 165.1 153.7 61 39.4 20.3 10.2 29.2 64.8 137.8 1.9 1/2 ----
Inches
CM
Inches
CM
61-1/8
155.25
68-5/8
174.3
58-1/2
148.6
66-1/2
168.9
26-1/2
75.4
27-3/4
78.59
15-3/16
67.3
15-3/16
70.5
16
38.6
16
38.6
4
10.2
4
10.2
14-1/2
39.4
15-3/4
40.0
29-11/16
40.6
30-15/16
40.6
54-1/4
3.2
54-1/4
3.2
1
NPT
1-1/4
NPT
1/2
NPT
1/2
NPT
11-15/16
30.3
11-15/16
30.3
Approx.
Ship Wt.
Lbs./kg
240/108.9
350/158.8
350/158.8
SUGGESTED SPECIFICATION
Water heater(s) shall be Model ________________ as manufactured by A. O. Smith or an approved equal. Water
heater(s) shall be of glasslined design, and gas-fired, equipped to burn __________ gas and design certified
by CSA and shall be approved by the National Sanitation Foundation (with optional leg kit). Heaters must
meet all applicable energy codes. Heaters shall have an input rating of _____ BTU/H and a recovery capacity
of _____ GPH at a temperature rise of 100°F with a storage capacity of _____ gallons. Heater shall be equipped
with a 2-3/4” x 3-3/4” boiler-type handhole cleanout (except BT-65) and shall have a working pressure of 150 psi. Heater(s) shall
be provided with an automatic gas shutoff device and safety shutoff in event pilot flame is extinguished; a gas pressure regulator
set for the type of gas supplied; an approved draft diverter, and extruded anode rod rigidly supported for cathodic protection.
A CSA Certified and ASME Rated T&P Relief Valve shall be furnished and installed by the manufacturer. The tank shall be foam
insulated. The outer jacket shall have a baked enamel finish over a bonderized undercoating. Fully illustrated instruction
manual and parts list to be included. All internal surfaces of the heater(s) exposed to water shall be glasslined with an alkaline
borosilicate composition that has been fused-to-steel by firing at a temperature range of 1400° to 1600°F. Heater tank shall have a
three year limited warranty against corrosion and tank failure due to sediment build-up as outlined in the written warranty.
Heater(s) shall be design certified by CSA. for operation of the heater in a closed system where thermal expansion has not been
compensated for with a properly sized expansion tank will void the warranty.
For Technical Information and Automated Fax Service, call 800-527-1953. A. O . Smith Corporation reserves the right to make product changes or improvements without prior notice.
Revised April 2013
www.hotwater.com
AOSCG10600
Page 2 of 2
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