Weil-McLain CGA25SPDN manual 2b Prepare boiler - pressure test, Prepare boiler for test

GOLD CGa Gas-Fired Water Boiler — Boiler Manual

2b Prepare boiler — pressure test

Hydrostatic pressure test

Pressure test boiler BEFORERattaching water or gas piping or electrical supply (except as noted below).

Prepare boiler for test

 2EMOVE THEHSHIPPING NIPPLE FROMR#'A'SUPPLY tapping) and remove the boiler relief valve. 4EMPO RARILYYPLUG THEHRELIEF VALVELTAPPINGPWITH AAÐv .040 pipe plug.

 2EMOVE vNIPPLEPREDUCING TEEEANDNDRAINAVALVEL 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PvTEE BUSHINGHANDNPRES- sure/temperature gauge from accessory bag. Pipe to boiler supply connection as shown in &IGURE , page 64. (Use pipe dope sparingly.)

 #ONNECTNAAHOSE TO BOILER DRAINAVALVE THEHOTHERHENDN

connected to a fresh water supply. Make sure hose can also be used to drain boiler after test.

 #ONNECTNAANIPPLE ANDNSHUTOFFTVALVELTO SYSTEM SUPPLY CONNECTION ON THEHvTEE 4HIS VALVELWILL BE USED TO BLEEDEAIRIDURING THEHlLL 6ALVE ANDNNIPPLE ARER

not included with boiler.)

 #ONNECTN AA NIPPLE ANDN SHUTOFFT VALVEL TO SYSTEM

return connection (at circulator flange if circula- tor installed on return). This valve will be used to BLEEDEAIRDDURING THE lLLR6ALVE AND NIPPLElARELNOT 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.

 #LOSEOSHUTOFFSVALVES

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  PSISFOR NO MORE THAN 

MINUTES

$O NOTO 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 TESTS#HECKEFOROLEAKS 2EPAIR IF found.

,EAKSAMUSTSBE REPAIRED AT ONCE. Failure to do so can damage boiler, resulting in substantial property damage.

$O NOTOUSESPETROLEUMBASED clean- ing or sealing compounds in boiler system. Severe damage to boiler will occur, resulting in substantial property damage.

Drain and remove fittings

 $ISCONNECT lLL WATER HOSELFROM WATER SOURCE

 $RAINABOILER AT DRAINAVALVELOR OUTUHOSESWHICHEVERH 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.

Part Number 550-101-009/0107 13