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DB/DW-720-1810
A.O. Smith DB/DW-720-1810 User Manual
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20
USE ONY TYPE 105
°
C THERMOPLASTIC OR ITS EQUIV
ALENT
IF ANY OF THE ORIGINAL WIRES AS SUPPLIED MUST BE REPLACED.
USE ONY TYPE 105
°
C THERMOPLASTIC OR ITS EQUIV
ALENT
IF ANY OF THE ORIGINAL WIRES AS SUPPLIED MUST BE REPLACED.
BOILER CONVENTIONAL SYSTEM
FIGURE 15
ONE BOILER LINEAR-TEMP SYSTEM
FIGURE 16
19
21
Table of Contents
Table of Contents
2
Replacement Parts
2
Rough-In Dimensions/Capacities
3
Installation Clearances
3
Levelling
3
Features
5
Safety Relief Valves
5
Electronic Intermittent Pilot Ignition Control
5
Manual Reset High Temperature Safety Limit Control
5
Automatic Reset High Temperature Control
6
Thermal Balancer
6
Safety Flow Switch
6
Installation Instructions
7
Required Ability
7
Location
7
Air Requirements
7
Venting the Boiler
8
Gas Connections
9
Purging
10
High Altitude Installations
11
Wiring Connections
11
Servicing Wiring And/Or Control
12
System Equipment Installation
12
Water Supply Line
12
Expansion Tank
12
Vent Valves
12
System Headers
12
Cooling Piping
12
Safety Flow Switch
12
Safety Flow Switch
13
Circulating Pump
13
Low Water Cutoff
14
Tank Temperature Control
14
System Installation
14
Conventional Space Heating Installation
14
Installation as Boiler Replacement
15
Linear-Temp Space Heating Applications
17
Linear-Temp Space Heating Installations
17
Wiring and Schematic Diagrams
21
Hot Water Supply Applications
27
Water Line Connections
27
Hard Water Conditions
27
Start-Up and Operating Instructions
32
Lighting and Operating Instructions
33
Internal Contaminants
34
Precautions
34
Checking and Adjusting the Input
34
Pilot Burner
34
Main Burner
34
Main Burner
35
Pre-Troubleshooting
35
Troubleshooting
35
General Maintenance
39
Relief Valve
39
Venting Maintenance
39
Heat Exchanger Preventive Maintenance
39
Deliming
39
Deliming Solvents
40
Removing Light Deposits of Scale
40
Removal of an Existing Boiler from Acommon Venting System
40
Limited Warranty
41
4
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A.O. Smith DB/DW-720-1810 Specifications
General
Brand
A.O. Smith
Model
DB/DW-720-1810
Category
Boiler
Language
English
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