Perform Hydrostatic Pressure Test - Weil-McLain UltraOil Manual

water boiler
Prepare boiler location

Perform hydrostatic pressure test:

See pages  and  for boiler feature locations.
1. Install air vent in relief valve tapping.
. Plug supply and return tappings.
. Install the boiler drain valve shipped with boiler.
4. Fill boiler.
. Vent all air.
6. Pressure test boiler at 1½ times working pressure.
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. Install the relief valve (shipped in barometric
damper carton).
Boiler preparation
Changing door hinge
The boiler is shipped with the burner door hinged on the left side. The hinge
bracket can be relocated to the right side if desired. See Figure 4.
1. Remove jacket front panel.
. Remove and retain burner door screws and washers used to fasten the
burner door to the front section (one on each side of door).
. Carefully lift the burner door so the door pins lift out of the hinge
bracket.
4. Set the burner door aside temporarily.
The burner door is heavy. Handle carefully to avoid potential
for personal injury.
Do not damage the burner door insulation when handling.
. 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 hinge bracket holes. The lower pin is longer than the upper. So align
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
On UO- boilers fired at 1.0 GPH
plied with the boiler. See page  for location.
10
— Boiler Manual
(continued)
ONLY flue baffles
, install the two
Figure 4
Burner door hinge installation
DO NOT install baffles on UO- boilers
fired at 0.8 GPH. Flue gas condensation
will result, causing corrosion damage to
boiler and vent system.
Combustion chamber floor blanket —
UO-3 ONLY – 0.8 GPH firing rate ONLY
On UO- boilers fired at 0.8 GPH
ramic fiber floor blanket
firing rate kit) on the floor of the combustion chamber.
See page  for location.
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.
. UO-, 0.8 GPH firing rate ONLY — Check for secure
placement of combustion chamber floor blanket.
. Visually check
burner mounting door and observation
port seals.
Verify gas-tight seal to prevent possible
flue gas leakage and carbon monoxide
emissions, which can lead to severe per-
sup-
sonal injury or death.
ONLY ce-
, place the
(supplied in the UO- low
Part number 550-141-986/1005