Troubleshooting guide

APPENDIX G
G-4
NORTHVALE, NJ 07647
INTERNATIONAL, INC.
APPD.
DWN.BY SCALE
DATE
DATE
JK
070207
AERCO
SD-A-726
C
REV.
BENCHMARK 3 MIL. BTU LOW NOx
DUAL FUEL GAS FIRED BOILER MULT.
INSTALLATION WITH ZERO SIDE CLEARANCE
P&T
AUTOMATIC AIR VENT
AIR SEPARATOR
1-1/2" NPT DRAIN CONN.
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)
* 2" MANUAL SHUTOFF VALVE
RELIEF VALVE (TYP.)
ISOLATION VALVE BALANCING VALVE
TEMPERATURE GAUGE
LEGEND
Y STRAINER
UNION
PRESSURE &
P&T
DRIP TRAP
* CONDENSATE DRAIN TRAP
HEATING
SYSTEM
RETURN
P&T
NATURAL GAS SUPPLY
P&T
P&T
CZ
SUPPLY PROPANE
AT MAXIMUM BTU/HR INPUT, MAINTAIN MINIMUM PROPANE PRESSURE AT 4.0" W.C. MAX PROPANE PRESSURE = 2.0 PSIG. (SEE NOTE 6)
(SEE NOTE 7)
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.