Weil-McLain CGA25SPDN Boiler User Manual


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Part Number 550-101-009/0107
13
GOLD CGa Gas-Fired Water Boiler — Boiler Manual
Prepare boiler — pressure test
Hydrostatic pressure test
Pressure test boiler BEFOREattaching water or gas piping
or electrical supply (except as noted below).
Prepare boiler for test
 2EMOVETHESHIPPINGNIPPLEFROM#'ASUPPLY
tapping) and remove the boiler relief valve. 4EMPO
RARILY
PLUGTHERELIEFVALVETAPPINGWITHAÐv.04
pipe plug.
 2EMOVEvNIPPLEREDUCINGTEEANDDRAINVALVE
from accessory bag. Install in boiler return con-
nection as shown on page 3 or in
&IGURE, item
3, page 64. Install circulator on either the return or
supply.
 2EMOVEvNIPPLEvTEEBUSHINGANDPRES-
sure/temperature gauge from accessory bag. Pipe
to boiler supply connection as shown in
&IGURE,
page 64. (Use pipe dope sparingly.)
 #ONNECTAHOSETOBOILERDRAINVALVETHEOTHEREND
connected to a fresh water supply. Make sure hose
can also be used to drain boiler after test.
 #ONNECTANIPPLEANDSHUTOFFVALVETOSYSTEMSUPPLY
CONNECTIONONTHEvTEE4HISVALVEWILLBEUSED
TOBLEEDAIRDURINGTHElLL6ALVEANDNIPPLEARE
not included with boiler.)
 #ONNECTANIPPLEANDSHUTOFFVALVETOSYSTEM
return connection (at circulator flange if circula-
tor installed on return). This valve will be used to
BLEEDAIRDURINGTHElLL6ALVEANDNIPPLEARENOT
included with boiler.)
Fill and pressure test
1. Open the shutoff valves you installed on supply and
return connections.
2. Slowly open boiler drain valve and fresh water sup-
ply to fill boiler with water.
3. When water flows from shutoff valves, close boiler
drain valve.
Drain and remove fittings
 $ISCONNECTlLLWATERHOSEFROMWATERSOURCE
 $RAINBOILERATDRAINVALVEOROUTHOSEWHICHEVER
provides best access to drain. Remove hose after
draining if used to drain boiler.
3. Remove nipples and valves unless they will remain
for use in the system piping.
4. Remove plug from relief valve tapping. See Section
to replace relief valve.
$ONOTUSEPETROLEUMBASED clean-
ing or sealing compounds in boiler
system. Severe damage to boiler
will occur, resulting in substantial
property damage.
,EAKSMUSTBEREPAIREDATONCE.
Failure to do so can damage boiler,
resulting in substantial property
damage.
2b
 #LOSESHUTOFFVALVES
5. Slowly reopen boiler drain valve until test pressure
of not more than 45 psi is reached on the pressure/
temperature gauge.
6. Test at no more than
PSIFORNOMORETHAN
MINUTES
$O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 main-
TAINEDTHROUGHOUTTEST#HECKFORLEAKS2EPAIRIF
found.
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