AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS - Manual (Page 104)

HE-
111 − PIPING CONNECTIONS
Rev B Mar 2013 C-3
T
STEAM TO WATER HEAT EXCHANGER
SWDW (DOUBLE WALL DESIGN)
MULTIPLE UNIT INSTALLATION
NORTHVALE, NJ 07647
INTERNATIONAL, INC.
APPD.
DWN.BY
SCALE
DATE MPC 122298
DATE SCD
NTS
112498
AERCO
SD-A-369 F
REV.
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.
4) REDUCERS, ON THE WATER INLET SIDE, SHOULD BE LOCATED ADJACENT TO THE HEATER. EXPANSION
5) CONDENSATE RETURN PIPING SHOULD BE ARRANGED TO PERMIT THE CONDENSATE TO DRAIN FREELY ,
6) 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
BY GRAVITY, FROM THE LOWER HEATER HEAD.
VALVE SHOULD BE PIPED VERTICALLY TO A HEIGHT 19" ABOVE THE FLOOR.
SEE DIMENSIONAL DRAWING.
NOTES:
3) HEATERS SHOULD BE PIPED REVERSE RETURN OR BALANCING DEVICES ON THE OUTLETS SHOULD BE
EMPLOYED.
1) FOR ACTUAL SIZES AND LOCATIONS OF PIPING AND OTHER CONNECTIONS TO THE HEATER,
HOT W
ATER
OUT
STEA
M HE
ADER
(NOT
E 5)
COLD
WAT
ER IN
HOU
SE R
ECIR
CULA
TION
(WHE
N EM
PLOY
ED)
CONNECTION
HOSE
CONNECTION
HOSE
CONNECTION
HOSE
P
T
T
C
C /
C /
CON
DEN
SATE
OUT
CHECK VALVE
STOP VALVE
PRESSURE GAUGE
PRESSURE GAUGE
THERMAL ELEMENT
DRAIN VALVE
RELIEF VALVE
CONTROL VALVE
P
C
COMPOUND
/
UNION
T
STRAINER
STEAM TRAP
TEMPERATURE GAUGE
LEGEND
/
Figure C-2. Piping Connection for Parallel Heat Exchanger