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


 
Part number 550-141-850/069924
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Prepare boiler pressure test
Perform hydrostatic pressure
test
Pressure test boiler before attaching water or gas piping
(except as noted below) or electrical supply.
Prepare boiler for test (Fig. 7)
Connect a hose from water supply to fill and drain
boiler for hydrostatic test. Hose is not included with
boiler.
Connect hose to boiler drain valve. Make sure hose
can also be used to drain boiler after test.
Remove 1" nipple, 1" tee, bushing and pressure/
temperature gauge from accessory bag. Pipe to boiler
supply connection as shown. Use pipe dope sparingly.
Connect a nipple and shutoff valve to system supply
connection on the 1" tee. This valve will be used to
bleed air during the fill. Valve and nipple are not
included with boiler.
Connect a nipple and shutoff valve to system return
connection at circulator flange. This valve will be used
to bleed air during the fill. Valve and nipple are not
included with boiler.
Install a ¾" pipe plug in the relief valve opening, top
of the rear boiler section, as shown. Plug is not
included with boiler.
Fill and pressure test
1. Connect fill water supply through drain valve (item
2).
2. Fill boiler with water (be sure bleed valves at 4 and 5
are open).
3. When water flows from bleed valves, shut off water
at drain valve.
4. Close bleed valves.
IIf
5. Slowly reopen drain valve (item 2) until test pressure
of not more than 45 psi is reached on the pressure
gauge.
6. Test at no more than 45 psi for no more than 10
minutes.
Do not leave boiler unattended.
A cold water fill could expand and
cause excessive pressure, resulting in
severe personal injury, death or
substantial property damage.
7. Make sure constant gauge pressure has been
maintained throughout test. Check for leaks. Repair
if found.
Leaks must be repaired at once.
Failure to do so can damage boiler,
resulting in substantial property
damage.
Do not use petroleum-based
cleaning or sealing compounds in
boiler system. Severe damage to
boiler will occur, resulting in
substantial property damage.
Drain and remove fittings
1. Disconnect fill water hose from water source.
2. Drain boiler at drain valve or out hose, whichever
provides best access to drain. Close drain valve and
remove hose after draining.
3. Remove nipples and valves at 4 and 5 unless they
will remain for use in the system piping.
4. Remove plug (item 6) from relief valve tapping.