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53
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'15 • HM-T-246
(2) Functional components for water cycle
Symbol N ame of component Function Details
1 DCWP Water pump DCWP is controlled to adjust the hot water outlet temperature to the set
temperature set through remote control.
P age61
P age62
DCWP is used for anti-freeze control of the water pipe.
Control range of pump rotation speed: 2000-4000min
-1
As for the control details, please refer to [Water flow volume control] and
[Anti-freeze control of water pipe].
2 CWFV 1 Flow regulator
(Flow regulating valve)
CWFV 1 is used for controlling hot water outlet temperature
P age61
P age62
P age55
The opening of CWFV 1 is decided according to the external pump head at water
pump test run.
As for the control details, please refer to [Water flow volume control] and
[Anti-freeze control of water pipe].
CWFV 3
Switching valve for anti-
freeze
When circulating the inlet/outlet water of the unit, CWFV 3 is switched to form C
When feeding clean water, CWFV 3 is switched to form B position.
CWFV 5 Hot water stop valve If multiple heat pump water heater systems are connected in parallel, the
water may flow disproportionately.
P age55
In case that cold water maybe s
u
pplied to the hot water supply line, CWFV 3 is closed.
As for the control details, please refer to [ P reventing control from
disproportionate water flow].
3 Tho-W1 Gas cooler water temperature
sensor (Inlet)
Tho-W1 is used for ①
Discharge pipe temperature control,
②
Compressor control,
③Detection of feed water inlet temperature anomaly.
P age63
Condition to detect feed water inlet temperature anomaly.
Judging anomaly: 63° C or higher
Release : lower than 60° C
As for the control details, please refer to [Discharge pipe temperature control]
and [Compressor control].
Tho-W2 Gas cooler water temperature
sensor (Outlet)
Tho-W2 is used for ①Hot water outlet temperature control, ②Detection of hot
water outlet temperature anomaly.
P age61
P age62
Condition to detect feed water outlet temperature anomaly
.
Judging anomaly:100° C or higher for 5sec
Released : lower than 60° C.
Or the temperature difference between
the inlet and
䚷 outlet water temperature of gascooler is within
10° C
As for the control details of hot water outlet temperature, please refer to [Water
flow volume control].
position.
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