John Wood JW375T75N-AV, Instruction Manual

Page: 31 / 36

31
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. However
, local codes shall govern their usage.
4.
The T
ank
Temperature Control should be wired to and control the pump between the water heater(s) and the storage tank(s).
5.
The water heater
’s operating thermostat should be set 5 degrees F higher than the
Tank
Temperature Control.
SINGLE FL
UE
- (2 UNITS)
LEGEND
TEMPER
AT
URE & PRESSURE
RELIEF
VA
LV
E
PRESSURE RELIEF
VA
LV
E
CIRCULA
TING PUMP
TA
NK TEMPER
AT
URE CONTRO
L
DRAIN
FULL
PO
RT
BAL
L
VA
LV
E
TEMPER
AT
URE GAGE
WA
TER FLOW SWITC
H
CHECK
VA
LV
E
W
ARNING: THIS
DR
AW
ING SHOWS SUGGESTED
PIPING CONFIGUR
AT
ION
AND OTHER DEVICES;
CHECK WITH LOCAL
CODES
AND ORDINANCES
FOR ADDITIONA
L
REQUIREMENTS.
FINISHED FLOOR
HO
T
WA
TER
TO
FIXTURES
HO
TC
OL
DH
OT
HO
T WATER RETURN
FROM FIXTURES
COLD
COLD WATER SUPPLY
EXPANSION TANK
PIPE T&P TO OPEN DRAIN
PIPE T&P TO OPEN DRAIN