AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS - Manual (Page 105)

HE-
111 − PIPING CONNECTIONS
Rev B Mar 2013 C-4
CON
DEN
SATE
OUT
P
(NOT
E 5)
T
C
STEA
M IN
ACCUMULATOR
EXPA
NSIO
N TA
NK
CO
LD
WA
TER
IN
(WH
EN
EM
PLO
YED
)
HO
US
E R
ECI
RC
ULA
TIO
N
HO
T W
ATE
R O
UT
CO
NN
ECT
ION
HO
SE
BEYOND THE OUTSIDE DIAMETER OF THE HEAD TO PERMIT REMOVAL OF THE HEAD AND SHELL.
FITTINGS, ON THE WATER INLET SIDE, SHOULD BE LOCATED AS FAR AS POSSIBLE FROM THE HEATER.
3) REDUCERS, ON THE WATER INLET SIDE, SHOULD BE LOCATED ADJACENT TO THE HEATER. EXPANSION
4) CONDENSATE RETURN PIPING SHOULD BE ARRANGED TO PERMIT THE CONDENSATE TO DRAIN FREELY ,
5) DRAIN VALVE SHOULD BE PIPED DIRECTLY TO A FLOOR DRAIN. RELIEF VALVE & OVER-TEMP SOLENOID
2) PIPING TO THE UPPER HEATER HEAD SHOULD BE PROVIDED WITH UNIONS OR FLANGES WHICH ARE LOCATED
1) FOR ACTUAL SIZES AND LOCATIONS OF PIPING AND OTHER CONNECTIONS TO THE HEATER,
BY GRAVITY, FROM THE LOWER HEATER HEAD.
VALVE SHOULD BE PIPED VERTICALLY TO A HEIGHT 19" ABOVE THE FLOOR.
SEE DIMENSIONAL DRAWING.
NOTES:
STEAM TO WATER HEAT EXCHANGER
SWDW (DOUBLE WALL DESIGN)
SINGLE UNIT WITH ACCUMULATOR TANK
NORTHVALE, NJ 07647
INTERNATIONAL, INC.
APPD.
DWN.BY
SCALE
DATE *** ******
DATE SCD
NTS
032999
AERCO
SD-A-370 D
REV.
C
T
LEGEND
CHECK VALVE
STOP VALVE
TEMPERATURE GAUGE
PRESSURE GAUGE
THERMAL ELEMENT
DRAIN VALVE
RELIEF VALVE
CONTROL VALVE
P
/
UNION
STRAINER
STEAM TRAP
PUMP
FLOW INDICATOR
BALANCING COCK
PRESSURE GAUGE
COMPOUND
/
Figure C-3. Piping Connection for Single Heat Exchanger with an Accumulator