AERCO BMK 3.0 LN Nat. Gas APRIL 2009 - Manual (Page 101)

APPENDIX G
G-1
AIR SEPARAT
OR
AUTOMATI
C
AIR VE
NT
LINE SIZE
BYPASS BAC
KFLOW PREVENT
ER
DIAPHRAG
M TYP
E
E
XPANSIO
N TAN
K
WAT
E
R
SUP
PLY
PR
ESSURE
RE
DUCING
FILL VALVE
CHEC
K
VALV
E
(TYP.)
HEAT
ING
SYS
TEM
SUPP
LY
S
YSTEM
PU
M
P
P&T
RELI
EF
V
A
LVE
(
T
Y
P.
) HEAT
ING
SYS
TEM
RET
URN
A
T MAXI
MUM B
TU/HR
INPUT,
M
AINTAIN
MINIMUM
NATU
RAL G
AS PR
ESSURE
AT
3
.5" W
.C. (FM
GAS
TRAIN)/4
.0" W
.C. (IRI
GAS
TRAIN)
M
AX GA
S PRE
SSURE
=
2.0 P
SIG.
(S
EE NO
TE 6)
* 2" MANUAL S
HUTOFF
VA
LV
E
GA
S SUPP
LY
TEMPE
RATURE GAUGE
P&
T
PRESS
URE &
BA
LANCING
VALV
E
IS
OLATION VALVE
UN
ION
Y STRAIN
ER
LE
GEN
D
AE
RCO
SD MC
BENCH
MARK
3 MIL.
BTU
LOW
NOx
SINGL
E UNI
T INSTA
LLATION
SC
A
LE
DW
N
.B
Y
APP
D
.
SD-A-
68
1
IN
T
E
RNA
T
IO
N
AL
, I
N
C.
NO
R
T
HV
A
LE
, NJ
07
64
7
0615
06
DA
T E
DA
T E
GAS
FIRED
BOILE
R
R
EV. C
DRIP TRAP
* CONDE
NSATE DRAIN TRAP
1-1/2" NPT DRAIN CONN.
DOWNS
TREAM
OF TH
E 2"
MANUA
L SHU
TOFF V
ALVE
TO BR
ING TH
E GAS
PRES
SURE
DOWN
TO 2.0
PSIG.
6)
WHEN
AVAILAB
LE GA
S PRE
SSURE
IS G
REATER
THAN
2.0 P
SIG, A
LOCK
-UP ST
YLE R
EGULATO
R MUS
T BE
INSTALL
ED
FITTING
S TO
PREVE
NT INT
ERFEREN
CE WIT
H REM
OVAL
OF BO
ILER P
ANELS
AND
COVERS.
AL
L PIPI
NG AND
FREELY, BY GRAVITY, TO A
CON
VENIENT FLOOR
DRAIN
.
R
ELIEF VALVE SHOULD
BE PIPED VERTICA
LLY
T
O
A
1) FOR
ACTUA
L SIZE
S AND
LOCA
TIONS
OF PIP
ING A
ND OTH
ER CO
NNECTIO
NS TO
THE
BOILER,
SEE
DIMENS
IONAL
DRAWING
(AP-A
-802).
ELECTR
IC CO
NNECTION
S (SER
VICE
SWITCHES
, COND
UIT BO
XES)
SHOULD
LIKEWI
SE
4)
LOCATE
WATE
R INLE
T AND
OUTLE
T FITTI
NGS (i
.e. U
NIONS,
ELBOWS
, ETC.)
A M
INIMUM
OF 6
''
FROM
BOILER
2)
S
HELL DRAIN VALVE AND CONDENS
ATE
D
RAIN
T
RAP
S
HOULD BE
AR
RANGED
TO PERMIT THE FLUIDS TO
DR
AIN
5) THIS IS
A TYPICAL
INSTA
LLATION
DRAWI
NG.
LOCAL CODES
AND AUTHO
RITIES SHOULD BE CONSULT
ED.
BE
6
'' AWAY FROM SIDE PANELS.
3)
ALL
(*) ITEM
S ARE
INCLU
DED S
EPARATE
LY IN
SHIPM
ENT FR
OM FA
CTORY.
HEIGHT 18'
' ABO
VE
FLO
OR.
NO
TES:
7)
EACH
CONDENS
ATE P
ORT CA
N BE
PIPED
INDIVID
UALLY
TO M
AIN DR
AIN.
(S
E
E
NO
TE
7
)
DR
IP
T
R
A
P
G
AS SU
PP
LY
* 2
" MA
NUA
L
SH
U
T
OF
F
VA
LV
E
Di
ag
ra
m
1
8) A
GAS
REGUL
ATOR
IS MAN
DATORY
FOR
THE S
TATE O
F MAS
SACHUSE
TTS, R
EGARDLE
SS OF
SUPP
LY PR
ESSURE,
SEE DIAGRAM
1
M
A
IN
T
A
IN
A R
E
GU
L
A
T
E
D
3.
5
" W
.C
. (
N
AT
. GA
S
, F
M
/
4.
0
" W
.C
. (
N
AT
. GA
S
, IR
I/
G
A
S
PR
ES
SU
R
E AT
M
A
X BT
U
/H
R
IN
P
U
T
(T
O BOIL
ER
)
(SEE
N
O
T
E
8
)