Weil-McLain 78 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners
Before Installing Boiler
1b
Provide clearances for servicing
around boiler:
• Back, for breeching - 30 inches.
• Left side, for cleaning and tankless heater
removal - 34 inches
• Allow sufficient space on remaining sides
for cleaning, servicing and burner
installation. See burner literature for length.
• Clearance from vent pipe to combustible
materials:
- singlewall vent pipe - 18 inches
- doublewall vent pipe - refer to vent pipe
manufacturer’s recommendations for vent
pipe clearances
Lay a foundation, if needed:
Floor construction and condition must be
suitable for weight of boiler when filled with
water. See page 31 for boiler weight/water
weight.
A level concrete or brick foundation is
required when:
• A floor could possibly become flooded
• Non-level conditions exist
Part No. 550-141-705
4
Boiler Foundation Length Table
Boiler
“L”
Boiler
“L”
Model
Inches
Model
Inches
378
23
878
58
478
30
978
65
578
37
1078
72
678
44
1178
79
778
51
1278
86
2" Min.
“L”
30"
Figure 3 Boiler Foundation
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Summary of Contents for 1078 S
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