Hitachi RWM-(H)FSN3E, Руководство по обслуживанию

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5 Control system
SMGB0070 rev. 1 - 08/2011
153
5
Working example using STANDARD DEMAND mode and default values except T
DHWS
set Case 1.
T
DHWS
=70ºC
T (ºC)
T
HPSTOP
=
T
DHW
T
HPSTART
= 44ºC
T
HPMAX
= 60ºC
54ºC
Heater Operation
HP Operation
At this point
consider that load
is bigger than
heater capacity
Time
N O T E
This example does not consider the possible constraints due to timing between changes.
Maximum / Minimum DHW loading time (T
DHWMAX
/ T
DHWMIN
)
This function controls the minimum and maximum times that Sanitary Water can operate using Heat Pump mode. Heater
operation is not affected by it.
Heat Pump will not stop if:
- Heat Pump Operation Time < T
DHWMIN
Stoppage by T
DHWS
(Domestic Hot Water Temperature Setting) has priority over this timer, so it may stop the system regar-
dless of Heat Pump Operation Time.
Heat pump will stop when:
- Heat Pump Operation Time > T
DHWMAX
When Heat Pump is stopped by this function, Sanitary Water will continue working by Heater or boiler.
CODE REF Description Default Value Range Steps Units
3-026 T
DHWMIN
DHW minimum time 10 0~15 1 min
3-027 T
DHWMAX
DHW maximum time 45 2~150 1 min
3-026
3-027
1
0
1
0
Hot water
request
DHW operation
Time
Request
No request
ON
OFF
N O T E
Manual stop has priority above Minimum operation time.