70
4.
See Closed Systems and
Thermal Expansion on page 14.
5.
See W
ater Line Connections on page 42.
6.
If
a
pump
is
being
installed
between
a
water
heater
and
storage
tank
or
on
a
building
recirculation loop wire according to Figure 68 on page 67.
7.
If
a
pump
is
being
installed
in
a
recirculation
loop
between
the
water
heater
and
a
commercial dishwasher wire according to Figure 68 or Figure 69 on page 67.
W
ATER PIPING DIAGRAMS
Before installation of water piping review the following:
1.
See Mixing V
alves on page 14.
2.
See Dishwashing Machines on page 14.
3.
See
Temperature-Pressure Relief V
alve on page 15.
ONE WA
TER HEA
TER, SINGLE TEMPERA
TURE
WITH VERTICAL ST
ORA
GE T
ANK FOR
CED RECIR
CULA
TION
WITH B
UILDING RECIR
CULA
TION
NOTES:
1.
Preferred piping method.
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 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.
LEGEND
TEMPER
AT
URE &
PRESSURE RELIEF
VA
LV
E
PRESSURE RELIEF
VA
LV
E
CIRCULA
TING PUMP
TEMPERA
TURE CONTRO
L
PROB
E
DRAIN
FULL
PO
RT
BALL
VA
LV
E
TEMPER
AT
URE GAGE
WA
TER FLOW SWITCH
CHECK
VA
LV
E
W
ARNING
:
THIS DRA
WING SHOWS SUGGESTED
PIPING CONFIGURA
TION
AND OTHER DEVICES;
CHECK WITH LOCAL
CODES
AND ORDINANCES
FOR
ADDITIONAL
REQUIREMENTS
.
AN
Y
MA
TERIAL, COMPONEN
T
OR VENDOR CHANGE
MUST
HA
VE PRIOR
APPROV
AL
BY
THE
APPLICABLE
PRODUCT
ENGINEERING DEP
AR
TMEN
T.
FINISHED FLOO
R
HOT WATE
R
RETUR
N
PIPE T&P TO OPEN DRAI
N
COLD WATE
R
SUPPL
Y
HOT WATE
R
TO FIXTURE
S
ALT. COLD WATER CONNECTION
EXPANSION TANK
