E-Tech WH-35, Инструкция по эксплуатации

Страница: 41 / 48

4.
See Closed Systems and
Thermal Expansion on page
13
5.
See W
ater Connections on page 17.
6.
If
a
building
recirculation
loop
is
present
the
circulation
pump
must
be
controlled
by
a
thermostat. See Figure 1
8
on page 4
0
for wiring.
W
ATE
R
PIPI
N
G
D
IA
G
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
VAL
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
VAL
VE
TA
NK OR LINE
TEMPER
ATUR
E
C
O
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
AIR T
O
W
ATER HEA
T PUMP
, SINGLE TEMPER
AT
URE, PREHEA
T SYSTEM
WITH VERTICAL
ST
ORAGE T
ANK
AND BACKUP
W
ATER 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
VAL
V
E
DRAIN & FLUSH V
AL
V
E
MINIMUM 18 INCHES HEA
T
TRAP
PIPING
PREHEA
TED
W
ATER OUT
TA
NK
THERMOST
AT
FIELD SUPPLIED PUMP FOR HPWH MODELS
WITHOUT
F
ACT
O
RY
PUMP