John Wood JW375T75N-AV, Instruction Manual

Page: 27 / 36

27
WATER PIPING DIAGRAMS
NOTES: 1.
Preferred piping diagram
.
2.
The temperature and pressure relief valve setting shall not exceed pressure rating of any component in the system
.
3.
Service valves are shown for servicing unit. Howeve
r, local codes shall govern their usage.
4.
The
Tank
Te
mperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5.
The water heate
r’s operating thermostat should be set 5 degrees F higher than the
Ta
nk
Te
m
perature Control.
SINGLE FL
UE
- (1 UNIT)
LEGEND
TEMPERA
TURE & PRESSURE
RELIEF
VA
LV
E
PRESSURE RELIEF
VA
LV
E
CIRCUL
AT
ING PUMP
TA
NK
TEMPER
AT
URE CONTRO
L
DRAIN
FULL
PO
RT
BALL
VA
LV
E
TEMPERA
TURE GAGE
WA
TER FLOW SWITCH
CHECK
VA
LV
E
WA
RNING:
THIS DR
AW
ING SHOWS SUGGESTED
PIPING CONFIGUR
AT
ION
AND OTHER DEVICES;
CHECK WITH LOCA
L
CODES
AND ORDINANCES
FOR
ADDITIONAL
REQUIREMENTS
.
FINISHED FLOOR
HO
C
TO
LD
COLD
EXPANSIO
N
TANK
COLD WATE
R
SUPPL
Y
PIPE T&P TO OPEN DRAI
N