AERCO BMK 1.5 LN July 2011 - Manual (Page 135)

APPENDIX G: PIPING DRAWINGS
PR2: 05/09/12 Page 135 of 152
Benchmark 1.5LN Low NOx Boiler
Operation and Maintenance Manual
OMM-0041_0D
GF-120
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526-0288
5)
THIS IS A TYPICAL INSTALLATION DRAWING
.
LOCAL CODES AND AUTHORITIES SHOULD BE CONSULT
ED
.
CONVENIENT FLOOR DRAIN
.
RELIEF VALVE SHOULD BE PIPED VERTICALLY TO A HEIGHT
18
'' ABOVE FLOOR
.
FITTINGS TO PREVENT INTERFERENCE WITH REMOVAL OF BOILER PANELS AND COVERS
.
ALL PIPING AND
ELECTRIC CONNECTIONS
(SERVICE SWITCHES
, CONDUIT BOXES
) SHOULD LIKEWISE BE
6"
AWAY FROM SIDE PANELS
.
1)
FOR ACTUAL SIZES AND LOCATIONS OF PIPING AND OTHER CONNECTIONS TO THE BOILER
, SEE DIMENSIONAL DRAWING
(AP
-A
-739
).
3)
ALL
(*)
ITEMS ARE INCLUDED SEPARATELY IN SHIPMENT FROM FACTORY
.
NOTES
:
AIR SEPARATOR
AUTOMATIC AIR VENT
1-
1/
2"
NPT
DRAIN CONN
.
LINE SIZE
BYPASS BACKFLOW PREVENTER
DIAPHRAGM TYPE EXPANSION TANK
WATER SUPPLY
* CONDENSATE
DRAIN TRAP
P&
T
PRESSURE REDUCING FILL VALVE
CHECK VALVE (TYP
.)
HEATING SYSTEM SUPPLY
SYSTEM PUMP
P&
T
RELIEF
VALVE
(TYP
.)
HEATING SYSTEM RETURN
* 1
-1
/2
" MANUAL
SHUTOFF VALVE
GAS SUPPLY
2)
SHELL DRAIN VALVE AND CONDENSATE DRAIN TRAP SHOULD BE ARRANGED TO PERMIT THE FLUIDS TO DRAIN FREELY
, BY GRAVITY
, TO A
4)
LOCATE WATER INLET AND OUTLET FITTINGS
(i.
e.
UNIONS
, ELBOWS
, ETC
.)
A MINIMUM OF
6''
FROM BOILER
NORTHVALE
, NJ
07647
INTERNATIONAL
, INC
.
APPD
.
DWN
.BY
SCALE
DATE DATE
JK NTS
102307
AERCO
SD
-A
-735
TEMPERATURE GAUGE
P&
T
PRESSURE
&
BALANCING VALVE ISOLATION VALVE UNION Y STRAINER
LEGEND
BENCHMARK
1.
5
MIL
. BTU LOW NOx
GAS FIRED BOILER
MULTIPLE UNIT INSTALLATION
6)
WHEN AVAILABLE GAS PRESSURE IS GREATER THAN
2.
0
PSIG
, A LOCK
-UP STYLE REGULATOR MUST BE INSTALLED
DOWNSTREAM OF THE
2"
MANUAL SHUTOFF VALVE TO BRING THE GAS PRESSURE DOWN TO
2.
0
PSIG
.
REV
C
AT MAXIMUM BTU
/HR INPUT
,
MAINTAIN MINIMUM GAS PRESSURE AT
4.
0"
W
.C
.
(FM GAS TRAIN
);
4.
2"
W
.C
.(IRI
).
MAX
. GAS PRESSURE
=2
.0
PSIG
.
(SEE NOTE
6)
7)
A GAS REGULATOR IS MANDATORY FOR THE STATE OF MASSACHUSETTS
, REGARDLESS OF SUPPLY PRESSURE
.
SEE DIAGRAM
1
DRIP TRAP
DRIP TRAP
* 1
-1
/2
" MANUAL
SHUTOFF VALVE
MAINTAIN A REGULATED 4.
0"
W
.C
. (
FM
),
4.
2
W
.C
. (
IRI
)
GAS PRESSURE AT MAX BTU
/HR INPUT
GAS SUPPLY
(TO BOILER
)
(SEE NOTE
7)
Diagram
1