Troubleshooting guide

APPENDIX G
G-2
NORTHVALE, NJ 07647
INTERNATIONAL, INC.
APPD. DWN.BY SCALE
DATE
CZ
DATE
JK
070507
AERCO
SD-A-724
C
REV.
BENCHMARK 3 MIL. BTU LOW NOx
DUAL FUEL GAS FIRED BOILER
MULTIPLE UNIT INSTALLATION
P&T
AUTOMATIC AIR VENT
AIR SEPARATOR
1-1/2" NPT DRAIN CONN.
* CONDENSATE DRAIN TRAP
PRESSURE
REDUCING
FILL VALVE
DIAPHRAGM TYPE
EXPANSION TANK
BACKFLOW PREVENTER
LINE SIZE
BYPASS
HEATING
SYSTEM
SUPPLY
SUPPLY
WATER
SYSTEM PUMP
CHECK VALVE (TYP.)
AT MAXIMUM BTU/HR INPUT, MAINTAIN MINIMUM GAS PRESSURE AT 6.5" W.C. MAX GAS PRESSURE = 2.0 PSIG. (SEE NOTE 6)
HEATING
SYSTEM
RETURN
* 2" MANUAL
SHUTOFF VALVE
RELIEF VALVE (TYP.)
ISOLATION VALVE BALANCING VALVE
TEMPERATURE GAUGE
LEGEND
Y STRAINER
UNION
PRESSURE &
P&T
DRIP TRAP
GAS SUPPLY
P&T
(SEE NOTE 7)
PROPANE
SUPPLY
AT MAXIMUM BTU/HR INPUT, MAINTAIN MINIMUM PROPANE PRESSURE AT 4.0" W.C. MAX PROPANE PRESSURE = 2.0 PSIG. (SEE NOTE 6)
DOWNSTREAM OF THE 2" MANUAL SHUTOFF VALVE TO BRING THE GAS PRESSURE DOWN TO 2.0 PSIG.
6) WHEN AVAILABLE GAS PRESSURE IS GREATER THAN 2.0 PSIG, A LOCK-UP STYLE REGULATOR MUST BE INSTALLED
FITTINGS TO PREVENT INTERFERENCE WITH REMOVAL OF BOILER PANELS AND COVERS. ALL PIPING AND
FREELY, BY GRAVITY, TO A CONVENIENT FLOOR DRAIN. RELIEF VALVE SHOULD BE PIPED VERTICALLY TO A
1) FOR ACTUAL SIZES AND LOCATIONS OF PIPING AND OTHER CONNECTIONS TO THE BOILER, SEE DIMENSIONAL DRAWING (AP-A-802).
ELECTRIC CONNECTIONS (SERVICE SWITCHES, CONDUIT BOXES) SHOULD LIKEWISE
4) LOCATE WATER INLET AND OUTLET FITTINGS (i.e. UNIONS, ELBOWS, ETC.) A MINIMUM OF 6'' FROM BOILER
2) SHELL DRAIN VALVE AND CONDENSATE DRAIN TRAP SHOULD BE ARRANGED TO PERMIT THE FLUIDS TO DRAIN
5) THIS IS A TYPICAL INSTALLATION DRAWING. LOCAL CODES AND AUTHORITIES SHOULD BE CONSULTED.
BE 6'' AWAY FROM SIDE PANELS.
3) ALL (*) ITEMS ARE INCLUDED SEPARATELY IN SHIPMENT FROM FACTORY.
HEIGHT 18'' ABOVE FLOOR.
NOTES:
7) EACH CONDENSATE PORT CAN BE PIPED INDIVIDUALLY TO MAIN DRAIN.