Weil-McLain 550-141-850/0599 Boiler User Manual


 
Part number 550-141-850/069938
GOLD GV Water boiler series 3 manualGOLD GV Water boiler series 3 manual
GOLD GV Water boiler series 3 manualGOLD GV Water boiler series 3 manual
GOLD GV Water boiler series 3 manual
Gas pipingV
Connecting gas supply piping to boiler
5. Use pipe dope compatible with propane
gases
. Apply sparingly only to male threads of pipe
joints so that pipe dope does not block gas flow.
Failure to apply pipe dope as
detailed above can result in severe
personal injury, death or substantial
property damage.
Natural Gas:
1. Refer to Table 3 for pipe length and diameter. Size gas
supply piping for total flow to all connected
appliances. For each GV boiler, provide for the
following gas flow (cfh = cubic feet per hour):
GV-3 70 cfh GV-5 140 cfh
GV-4 105 cfh GV-6 175 cfh
Table 3 is only for gas of specific gravity 0.60 at
a pressure drop through the line of
0.3" w.c.
.For additional gas pipe sizing information,
refer to ANSI Z223.1 (or CAN/CGA B149.1 orB149.2
for Canadian installations).
2. Inlet pressure required at gas valve inlet:
maximum 13" w.c. minimum 4" w.c.
3. Install 100% lockup gas pressure regulator in supply
line if inlet pressure exceeds 13" w.c. Adjust
for 13" w.c. maximum.
Propane Gas:
1. Contact gas supplier to size pipes, tanks and 100%
lockup gas pressure regulator.
2. Adjust propane supply regulator provided by gas
supplier for 13" w.c. maximum pressure.
3. Inlet pressure required at gas valve inlet:
maximum 13" w.c. minimum 4" w.c.
Do not connect gas supply to boiler
or attempt to operate boiler unless
the correct orifice plate has been
verified or installed in accordance
with manual Section IIc.
Except where otherwise
instructed in this manual, do
not attempt to measure or
adjust the outlet pressure
setting of the gas valve
. The gas
valve is factory set to a slight negative
pressure, and is operated as a
negative-pressure regulated valve.
Failure to comply will result in
malfunction of the boiler, causing
severe personal injury, death or
substantial property damage.
1. Refer to Figure 17 to connect gas supply to ½" npt
boiler gas connection. Use wrench to hold factory-
installed gas piping nipple.
2. Support piping with hangers, not by boiler or its
accessories.
3. Purge all air from gas supply piping.
4. Before placing boiler in operation, check boiler and
its gas connection for leaks.
Do not check for gas leaks with
an open flame use bubble test.
Failure to use bubble test or check
for gas leaks can cause severe
personal injury, death or substantial
property damage.
a. Close manual main shutoff valve during
any pressure testing at less than 13" w.c.
b. Disconnect boiler and gas valve from
gas supply piping during any pressure
testing greater than 13" w.c.