Weil-McLain | GV | Instructions | gv-gas-air-manifold-instructions_1.

gv-gas-air-manifold-instructions_1.
GV BOILER
Gas/Air Manifold Assembly
Part Number 382-200-355 for Series 1, 2 & 3
Part Number 382-200-362 for Series 4
Replacement Instructions
WARNING
This symbol is used in these instructions to indicate presence of hazards which can cause severe personal injury,
death or substantial property damage.
These instructions are for use by a qualified installer/service technician. Failure to follow all instructions in proper
order can cause severe personal injury, death or substantial property damage.
Shut off main gas valve and disconnect electricity to boiler. Failure to do so can cause severe personal injury, death
or substantial property damage.
5. Tighten all four screws in gas/air manifold assembly
evenly, until metal-to-metal contact is made around
Contents of Kit:
entire manifold.
Gas/Air Manifold
6. Re-connect hoses as shown in Figure 1. Secure wire
O-ring for manifold
tie or hose clamp on air inlet hose.
Gas valve fitting
7. Turn on electric and gas to boiler. Check boiler normal
Miscellaneous hardware: screws to mount manifold to
sequence of operation and follow checkout procedure
inducer housing, to mount gas valve to inducer housing,
in Boiler Manual.
to mount manifold fitting to gas valve, plastic tie wrap to
8. Replace jacket front and top panels.
re-attach condensate trap to manifold.
Instructions
RECOMMENDED TOOLS:
1. Remove:
10” CRESCENT WRENCH
Jacket top and front panels.
SMALL PIPE WRENCH
All hoses from gas/air manifold assembly (save to re5/16” NUT DRIVER
install). See Figure 1.
5/16” SOCKET WITH EXTENSION
For Series 1, 2 & 3, remove left-handed threaded fitting
#7 METRIC WRENCH OR SOCKET
from gas valve.
1/4” SLOTTED SCREWDRIVER
OR
Do not disassemble blower housing. A
For Series 4, remove the gas valve to manifold fitting
WARNING
fire or explosion causing severe
by removing four screws (#7 metric head) from fitting.
personal injury or property damage can
Gas/air manifold assembly.
result.
Gas orifice plate (save to re-install).
2. Install new gas/air manifold assembly. Loosely screw
in 2 back screws to support assembly.
3. For Series 1, 2 & 3, align left-hand threaded fitting to
gas valve and tighten.
a. Do not clamp gas tubing with excessive force, as it
will deform.
b. Do not apply excessive force to gas valve.
OR
For Series 4, align gas valve manifold fitting to gas
valve with new O-ring in place and replace four screws
in the gas valve fitting.
WARNING
WARNING Carefully seat O-ring in manifold fitting
groove to insure proper fit as manifold
fitting is mated to gas valve. Failure to do
so can result in a fire or explosion causing
severe personal injury or property
damage.
4. Slide in gas orifice plate and re-install two front screws
in gas/air manifold assembly.
Weil-McLain
500 Blaine Street
Michigan City, IN 46360-2388
Figure 1
http://www.weil-mclain.com
Part number 550-141-607/0601
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