Weil-McLain 550-141-826/1201 - Manual (Page 10)

SERVICE TECHNICIAN ONLY — read and follow completely.
Install boiler — packaged boilers only
Place boiler
1. Remove circulator strapped to pallet.
Circulator will be damaged if not removed before boiler is
lifted from pallet.
2. Remove boiler from pallet.
Do not drop boiler or bump jacket on floor or pallet. Damage
to boiler can result.
Smaller sized boilers may be top heavy. Use caution when
handling to avoid minor personal injury or property damage.
3. Boiler is shipped for back flue outlet. To change to top flue outlet (see
Figure 3, page 11):
a. Remove jacket cap on top of boiler.
b. Loosen two screws holding flue cap strap to collector hood. Remove
strap and flue cap from opening. Re-tighten screws.
c. Check rope placement inside flue cap.
(Read under step #6 below).
d. Loosen two screws on back flue outlet. Set flue cap on outlet. Install
strap by engaging slots in screws. Tighten screws. Make sure cap is
securely installed.
e. Snap jacket cap in back outlet opening.
Jacket cap must be in place on boiler to avoid requiring an 18”
minimum clearance from back or top of boiler to combustible
material.
4. Check level. Shim legs, if needed.
5. Check for secure placement of insulation on target wall, chamber floor
and burner door.
6. Visually check:
a. Flue collector hood seal.
b. Burner mounting door seal.
Obtain gas-tight seal to prevent possible flue gas leakage
and carbon monoxide emissions, which can lead to severe
personal injury or death.
Perform hydrostatic pressure test
1. Remove relief valve installed in boiler.
2. Install air vent in “N” tapping on top boiler.
3. Plug supply and return tappings.
4. Drain valve is already factory-installed.
5. Fill boiler. Vent all air. 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.
6. Check for maintained gauge pressure for more
than 10 minutes. Visually check for leaks if gauge
pressure drops.
7. 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.
8. Retest boiler after repairing leaks.
9. Remove air vent and plugs. Reinstall relief valve.
Part number 550-141-826/1211 10
GOLD
WGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 —
Boiler Manual