42
35
4.
See Closed Systems and
Thermal Expansion on page
13
5.
See Water Connections on page 17.
6.
If
a
building recirculation loop
is present the
circulation
pump
must be
controlled
by
a
thermostat.
WA
TE
R
PIPI
N
G
DI
AG
RAM
S
Before installation of water piping review the following:
1.
See Mixing
Valves on page 13.
2.
See W
ater
Temperature on page 10.
3.
See
Temperature - Pressure Relief
Valve on page 14.
41
IMPORT
ANT INST
ALLA
TION NOTES:
1.
COLD W
ATER SUPPL
Y
MUST
CONNECT
TO
THE ST
ORAGE
TA
NK ON PREHEA
T
SYSTEMS
2.
BUILDING RECIRCULA
TION LOOP
RETURN LINE MUST
CONNECT
T
O
THE
INLET
OF
THE BACKUP
W
ATER HEA
TER
ON
PREHEA
T SYSTEMS.
LEGEND
TEMPER
AT
URE & PRESSUR
E
RELIEF V
AL
V
E
PRESSURE RELIEF V
AL
VE
CIRCULA
TING PUMP
DRAIN
WYE STRAINER
FULL
PO
R
T BALL
V
A
LV
E
TEMPERA
TURE GAGE
CHECK V
AL
VE
TA
NK OR LINE
TEMPER
ATUR
E
CO
NTRO
L
W
A
RNING:
THIS DRA
W
ING SHOWS SUGGESTED
PIPING CONFIGURA
TION
AND OTHER DEVICES;
CHECK WITH LOCAL
CODES
AND ORDINANCES
FOR ADDITIONAL
REQUIREMENTS
.
ONE
HEA
T
PUMP
, SINGLE TEMPERA
TURE, PREHEA
T SYSTEM
WITH
VERTICAL
STORAGE T
ANK
AND BACKUP
WA
TER HEA
TER
WITH FORCED BUILDING RECIRCULA
TION
FINISHED FLOOR
COLD WATER SUPPLY
BUILDING RECIRCULATION LOOP RETURN
HOT
W
ATER
OU
T T
O
FIXTURES
SUPPL
Y
SUPPL
Y
W
ATER
(OUTLET)
RETURN W
ATER
(INLET)
HPWH
ST
ORAGE TANK
BACKUP W
ATER
HEA
TER
LINE THERMOSTAT
PIPE T&P TO OPEN DRAIN
EXPANSION TANK
PIPE T&P TO OPEN DRAIN
PURGE & FLUSH
VA
LV
E
DRAIN & FLUSH V
A
LV
E
MINIMUM 18 INCHES HEA
T TRAP
PIPING
PREHEA
TED
W
ATER OUT
TA
N
K
THERMOST
AT
FIELD SUPPLIED PUMP FOR HPWH MODELS
WITHOUT
F
ACT
O
RY
PUMP
Содержание C125W
Страница 2: ......
Страница 5: ...5 PB ...
Страница 6: ...6 PB AI0 AI1 I I I I I I ...
Страница 7: ...7 PB ...