A.O. Smith BTH 120-250(A) Manuals

Manuals and User Guides for A.O. Smith BTH 120-250(A). We have 1 A.O. Smith BTH 120-250(A) manual available for free PDF download: Installation & Operating Instructions Manual

A.O. Smith BTH 120-250(A) Installation & Operating Instructions Manual (32 pages)

SERIES 970 AND 973 COMMERCIAL GAS WATER HEATER GAS-FIRED POWER BURNER FOR DOMESTIC HOT WATER

Brand: A.O. Smith | Category: Water Heater | Size: 0 MB

Rough-In Dimensions
2
Foreword
2
Table of Contents
3
Features
3
Installation Instructions
4
- Required Ability
  4
- Insulation Blankets
  4
- Locating the Heater
  5
- Clearances
  5
- Hard Water
  6
- Air Requirements
  6
- Mechanical Exhausting of Room Air
  6
- Unconfined Space
  6
- Confined Space
  6
- Chemical Vapor Corrosion
  6
- Venting
  6
- Vent Pipe Termination
  6
- Direct Venting
  8
- Direct Vent Terminal Installation (Sidewall)
  8
- Installation Sequence
  9
- Vertical Vent Terminal Installation
  10
- Installation Sequence
  10
- Installation of Vent System
  10
- Vent Pipe Preparation
  11
Control and Switches
11
- Blower Prover Switch
  11
- Blocked Outlet Prover Switch
  12
- Blocked Inlet Prover Switch
  12
- Low Gas Pressure Switch
  12
- On/Off Switch
  12
- Hot Surface Igniter
  12
Gas Piping
12
- Connection of Gas Pipe
  13
- Purging
  13
- Gas Meter Size - City Gases Only
  13
- Gas Pressure Regulation
  13
- Gas Valves
  13
System Connections
13
- Thermometers
  13
- Relief Valve
  13
- Water Line Connections
  14
- Heater Wiring
  14
Operation
15
- Sequence of Operation
  15
- Self Diagnostic Controller
  15
- Gas Value Leds Flashing
  15
- Error Codes
  16
- Fault Conditions
  16
- No Incoming Line Voltage
  16
- No Low Voltage
  16
- Temperature Probe Fault
  16
- Switch Open
  17
- Control Bad
  17
- Combustion Air Blockage
  17
Prior to Start-Up
18
- Required Ability
  18
Operatiing Instructions
18
Cathodic Protection
20
- Precautions
  20
General Information
20
- Power Burner
  20
- High Limit
  20
- High Altitude Installations
  20
Maintenance
20
- General
  20
- Maintenance Schedule
  20
- Flushing
  21
- Draining
  21
- Sediment Removal
  21
- Lime Scale Removal
  21
- Anode Inspection and Replacement
  21
- Drain Valve and Access Panels
  22
- Relief Valve
  22
- Circulating Pump
  22
- Vent System
  22
Installation Diagrams
23
- Manifold Kits
  28
Checklist and Service Information
29
Trouble-Shooting
29
Replacement Parts
30
Limited Warranty
31

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A.O. Smith BTH 120-250(A) Installation & Operating Instructions Manual (32 pages)

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