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Weil-McLain 80 Boiler For Gas, Light Oil, Gas/Light Oil Fired Burners
8 Part No. 550-141-935/0602
Perform hydrostatic pressure test
Prepare boiler and test:
1. See pages 28 and 29 for tapping locations. Install:
a. Boiler drain (not furnished).
b. Water pressure gauge — for test only. Be sure gauge can handle test pressure — see step 3.
c. Air vent in upper tapping (K).
2. Plug remaining tappings.
Do not pressure test with any control installed. Damage to control can occur due
to overpressure.
3. Fill boiler. Vent all air. Pressure test at least 10 minutes at a pressure not less than the following:
Steam boiler:
Between 45 and 55 psig.
Wa t e r boiler:
1½ times maximum allowable working pressure (MAWP) stamped on the boiler nameplate,
located on boiler jacket front panel.
Do not exceed above test pressures by more than 10 psig.
Do not leave boiler unattended. Cold water fill could expand and cause excessive
pressure, resulting in severe personal injury, death or substantial property damage.
4. Check for maintained gauge pressure and leaks. Repair if found.
Leaks must be repaired at once. Failure to do so can damage boiler, resulting in
substantial property damage.
Do not use petroleum-based cleaning or sealing compounds in boiler system. Severe
damage to system components can result, causing substantial property damage.
5. Drain boiler and remove air vent, boiler drain and gauge. Remove plugs from tappings that will
be used for controls and accessories.
4