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WGO 4 Series
Weil-McLain WGO 4 Series User Manual
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• Installation
• Startup
• Maintenance
• Parts
Boiler Manual
Series 4
Oil-Fired W
ater
Boiler
s
This manual must only
be used by
a qualied heating installer/service
technician. BEFORE installing, read
all
instructions
in
this
manual
and
all
other
information
shipped
with
the
boiler
.
Perform
steps
in
the
order
given. Failure to comply could result in severe personal injury
, death or substantial property damage.
Part number 550-142-331/0421
2
Table of Contents
Using this Manual
2
Homeowner
2
Service Techicians
2
When Calling or Writing about the Boiler
2
Packaged, Semi-Packaged and Knocked-Down Boilers
2
Hazard Definitions
2
Table of Contents
3
Contents
3
Please Read before Proceeding
4
Homeowner
4
Service Techicians
4
Tips for Water Systems
4
Saltwater Damage
4
Electrical Damage
4
Frozen Water Damage Hazard
5
Routine Maintenance Schedule
5
Beginning each Heating Season
5
Daily During Heating Season
5
Weekly During Heating Season
5
End of Heating Season
5
Boiler Shutdown
5
Operation
6
WGO (See Figure 1)
6
Troubleshooting
7
Before Installing Boiler
8
Installations Must Comply with
8
Before Selecting Boiler Location
8
Provide Clearances Around Boiler (See Figure 2)
8
Provide Air for Combustion and Ventilation
9
Foundation
9
Install Boiler - Packaged Boilers Only
10
Place Boiler
10
Perform Hydrostatic Pressure Test
10
Install Boiler - Semi-Packaged & Knocked-Down Boilers
12
Place Boiler
12
Perform Hydrostatic Pressure Test
14
Install Jacket (Knocked-Down Boiler Only)
14
Install Boiler Controls
14
Install Burner - All Boilers
15
Install Burner
15
Connect Breeching
16
(Also Refer to Instructions Packed with Burner) Connect Breeching
16
General Chimney Requirements
16
Connect Water Piping
18
General Piping Information
18
Install Piping
18
To Connect WGO Boilers to Indirect-Fired Water Heaters
18
DIAPHRAGM Expansion Tank (Figure 11)
19
CLOSED Expansion Tank (Figure 12)
19
Piping MULTIPLE ZONES
20
Piping for Systems Requiring Temperatures below 140°F
21
Use with Refrigeration Systems
22
Connect Wiring
22
General Wiring Requirements
22
Thermostat Wiring
22
3-Wire Zone Valve Applications
22
General Wiring
23
Burner Wiring
23
High Temperature Limit
23
Connect Wiring - Blocked Vent
25
Shutoff Switch Option
25
Blocked Vent Shutoff Switch
25
Connect Wiring - Vent Damper
26
Connect Oil Piping
26
General Oil Piping Requirements
26
Oil Piping Connection at Burner
26
Start-Up
27
Fill the System
27
When Using Antifreeze
27
To Place in Operation
27
Check-Out Procedure
28
Check off Steps as Completed
28
Installation and Service Certificate
28
Annual Service Check List
29
Controls Requiring Annual Service
29
Detailed Service Procedures
30
Cleaning Boiler Flue Ways
30
General Description of Control Operation
30
Close Clearance Installation
31
Burner Adjustments
31
Replacement Parts
33
Dimensions
38
Ratings
39
Handling Ceramic Fiber and Fiberglass Materials
40
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Weil-McLain WGO 4 Series Specifications
General
Brand
Weil-McLain
Model
WGO 4 Series
Category
Boiler
Language
English
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