AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS - Manual (Page 106)

HE-
111 − PIPING CONNECTIONS
Rev B Mar 2013 C-5
CON
DEN
SATE
OUT
P
(NOT
E 5)
T
C /
STEA
M IN
DIS
PER
SIO
N
TUB
E
HOT W
ATER
OUT
SWITCH (NOTE 7)
TEMPERATURE
DIA. RATIO: 2:1 MIN.,
STRATIFIED HOT WATER
TANK HEIGHT TO
3:1 PREFERRED
STORAGE TANK
CO
LD
WA
TER
IN
HO
USE
RE
CIR
CU
LAT
ION
(WH
EN
EM
PLO
YED
)
CONNECTION
HOSE
EXPA
NSIO
N TA
NK
STEAM TO WATER HEAT EXCHANGER
SWDW (DOUBLE WALL DESIGN)
SINGLE UNIT WITH STRATIFED TANK
NORTHVALE, NJ 07647
INTERNATIONAL, INC.
APPD.
DWN.BY
SCALE
DATE *** ******
DATE SCD
NTS
032999
AERCO
SD-A-371 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.
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:
6) MOUNT TEMPERATURE SWITCH 1/3 UP FROM THE BOTTOM OF THE TANK, SWITCH WILL TURN PUMP ON AND OFF.
LEGEND
CHECK VALVE
STOP VALVE
PRESSURE GAUGE
TEMPERATURE GAUGE
PRESSURE GAUGE
THERMAL ELEMENT
DRAIN VALVE
RELIEF VALVE
CONTROL VALVE
COMPOUND
UNION
STRAINER
STEAM TRAP
PUMP
FLOW INDICATOR
BALANCING COCK
P
C
/
T
Figure C-4. Piping Connection for Single Heat Exchanger with a Stratified Storage Tank