74
4.
See Closed Systems and
Thermal Expansion on page 15.
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 70.
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 70.
w
ater
piping
d
iagrams
Before installation of water piping review the following:
1.
See
m
ixing V
alves on page 15.
2.
See Dishwashing
m
achines on page 15.
3.
See
Temperature-Pressure
r
elief V
alve on page 16.
ONE WATER HEATER, SINGLE TEMPERATURE WITH HORIZONTAL STORAGE TANK FORCED RECIRCULATION WITH BUILDING RECIRCULATION
LEGEND
TEMPER
AT
URE & PRESSURE
RELIEF
VA
LV
E
PRESSURE RELIEF
VA
LV
E
CIRCULA
TING PUMP
DRAIN
FULL
PO
RT
BAL
L
VA
LV
E
TEMPER
AT
URE GAGE
WA
TER FLOW SWITC
H
CHECK
VA
LV
E
MIXING
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
OUTLET
ALTERNATE TANK TEMPERATURE CONTROL LOCATION
EXPANSION TANK
HOT WATE
R
RETURN
COLD WATE
R
SUPPLY
PIPE T&P TO OPEN DRAIN
LINE TEMPERATURE CONTROL
TANK TEMPERATURE CONTROL
NOTE: The water heater
’s Operating Set Point should be set 5° higher than the
Tank
Temperature Control in the auxiliary storage tank.
TANK OR LINE
TEMPERA
TURE
CONTROL
AOS
ST
ORAGE
T
ANK
