Weil-McLain ULTRA OIL Manual page 11

®
WATER BOILER
Prepare boiler location
Perform hydrostatic pressure test:
1. Install air vent in relief valve tapping.
2. Plug supply and return tappings.
3. Install the boiler drain valve shipped with boiler.
4. Fill boiler.
5. Vent all air.
Do not leave boiler unattended. Cold water fill can expand
and damage cast iron, resulting in severe personal injury,
death or substantial property damage.
7. Check for maintained gauge pressure for at least 10 minutes. Visually
check for leaks if gauge pressure drops.
8. Drain boiler. Repair leaks if found.
Do not use petroleum-based sealing compounds to repair
leaks. Damage to system components can result, causing
property damage.
9. Retest boiler after repairing leaks.
10. Remove air vent and plugs. Reinstall relief valve.
Boiler preparation
Changing door hinge
The boiler is shipped with the burner door hinged on the left side. The hinge
1. Remove jacket front panel.
2. Remove and retain burner door screws and washers used to fasten the
burner door to the front section (one on each side of door).
3. Carefully lift the burner door so the door pins lift out of the hinge
bracket.
The burner door is heavy. Handle carefully to avoid potential
for personal injury.
Do not damage the burner door insulation when handling.
5. The hinge bracket has keyhole slots. Loosen the two screws securing
the hinge bracket to the front section. Remove the hinge bracket.
6. Loosen the two screws on the opposite side. Place the hinge bracket on
that side and tighten the two screws to secure the bracket. Also tighten
the two screws on the other side.
7. Carefully lift the burner door and position so the door pins slide into
the lower pin, then the upper.
8. Replace burner door screws and washers used to fasten the burner door
to the front section (one on each side of door).
Flue baffles —
UO-3 ONLY – 1.0 GPH firing rate ONLY
Part number 550-141-986/0112
— Boiler Manual
(continued)
ONLY , install the two
Burner door hinge installation
Hinge bracket and screws
(factory-installed on left side)
Burner door screws and washers
fired at 0.8 GPH. Flue gas condensation
will result, causing corrosion damage to
boiler and vent system.
Combustion chamber floor blanket —
All Direct Vent and UO-3 – 0.8 GPH firing rate
Place the
of the combustion chamber. The blanket and instruc-
the 0.8 GPH boiler or supplied with the burner for
If the boiler has flue baffles installed, you
must remove the baffles before changing
to the low firing rate. Flue gas condensa-
tion will result, causing corrosion damage
to boiler and vent system.
Check chamber and burner door
1. Check for secure placement of insulation on burner
door.
2. All Direct Vent and UO-3, 0.8 GPH firing rate —
Check for secure placement of combustion chamber
floor blanket.
3. Visually check b
urner mounting door seal.
Verify gas-tight seal to prevent possible
flue gas leakage and carbon monoxide
sup-
emissions, which can lead to severe per-
sonal injury or death.
UO010
on the floor
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