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A.O. Smith
Water Heater
BTR120
A.O. Smith BTR120 User Manual
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16
VERTICAL ST
ORAGE T
ANK AND FORCED CIRCULA
TION
DANGER
TEMPERA
TURE SETTING SHOULD NOT EXCEED SAFE USE
TEMPERA
TURE
A
T FIXTURES. SEE W
A
TER TEMPERA
TURE
CONTROL
WARNING ON P
AGE 27. IF HIGHER PREHEA
T TEMPERA
TURES
ARE NECESSARY
TO OBT
AIN
ADEQUA
TE BOOSTER
OUTPUT
, ADD AN ANTI-SCALD
V
AL
VE
FOR
HOT
W
A
TER
SUPPLIED
T
O
FIXTURES.
HORIZONT
AL
STORAGE T
ANK
AND FORCED CIRCULA
TION
15
17
Table of Contents
Rough-In-Dimensions
2
Table of Contents
4
Foreword
4
General Safety Information
5
Chemical Vapor Corrosion
5
Improper Combustion
5
Liquid Petroleum Models
5
Extended Non-Use Periods
5
Insulation Blankets
5
High Altitude Installation
6
Features
6
The Eliminator (Self-Cleaning System)
6
High Limit Switch (E.C.O.)
6
Electronic Ignition Control
7
Automatic Flue Damper Device
7
Circulating Pump
7
Dishwashing Machine Requirement
7
Installation Instructions
8
Uncrating
8
Locating the Heater
8
Levelling
8
Clearances
8
Installation on Combustible Flooring
9
Hard Water
9
Air Requirements
9
Unconfined Space
9
Confined Space
10
Vent Reducer
10
Venting
10
Multiple Heater Manifold
10
Water Line Connections
10
Technical Data Venting
10
Water (Potable) Heating and Space Heating
13
Thermometers (Not Supplied)
13
Relief Valve
13
Gas Piping
13
Gas Piping and Dirt Leg Installation
14
Gas Pressure Regulator
15
Grounding Instructions
15
Heater Wiring
15
Installation Diagrams
15
Manifolds
22
Mechanical Venting
23
Single Unit Installation
23
Vent Installation
23
Multiple Unit Installation
23
Operation
24
General
24
Filling
24
Purging
24
Lighting and Operating Labels
25
Water Temperature Control
27
Testing Damper Control
27
Checking Venting
27
Preventive Maintenance
28
Check the Pilot
28
Pilot Burner
28
Main Burner
28
Gas Valves
29
Checking the Input
29
Venting System
30
Remote Storage Tank Temperature Control
30
Relief Valve
30
Hot Water Odor
30
Anode Rod Inspection
30
Recommended Procedure for Periodic Removal
30
Water Heaters
30
Deliming Solvents
31
Tank Cleanout Procedures
31
Troubleshooting Ignition Module System
32
Service
32
Electrical Servicing
32
Replacement Parts
32
Effikal Flue Damper Troubleshooting Guide
33
Operational Checklist
34
Limited Warranty
35
4
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A.O. Smith BTR120 Specifications
General
Brand
A.O. Smith
Model
BTR120
Category
Water Heater
Language
English
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