John Wood Commercial - 300-400K BTU - Manual (Page 67)

67
4.
See Closed Systems and
Thermal Expansion on page 14
5.
See W
ater Line Connections on page 39.
6.
If
a
pump
is
being
installed
between
a
water
heater
and
storage
tank
or
on
a
building
recirculation loop wire according to Figure 64 on page 66.
7.
If
a
pump
is
being
installed
in
a
recirculation
loop
between
the
water
heater
and
a
commercial dishwasher wire according to or Figure 64 on page 66.
w
a
ter
p
iping
d
iagrams
b
efore 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
r
elief V
alve on page 15.
ONE WA
TER HEA
TER, SINGLE TEMPERA
TURE
WITH B
UILDING RECIR
CULA
TION
LEGEND
TEMPER
AT
URE & PRESSURE
RELIEF
VA
LV
E
PRESSURE RELIEF
VA
LV
E
CIRCULA
TING PUMP
TA
NK OR LINE
TEMPER
AT
UR
E
CONTRO
L
DRAIN
FULL
PO
RT
BAL
L
VA
LV
E
TEMPER
AT
URE GAGE
WA
TER FLOW SWITCH
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
EXP
ANSION
TANK
HO
T
WA
TER
OUTLET
PIPE T&P TO OPEN DRAIN
COLD WA
TE
R
SUPP
LY
HOT WATER RETURN
LINE TEMPERATURE CONTRO
L