Hitachi YUTAKI Series - System Configurations

Controller pack
Service Manual
118
Systemcongurations
SMGB0066 rev.0 - 12/2009
TERMINAL
BLOCK C
TERMINAL
BLOCK C
TERMINAL
BLOCK C
T MIX
T DHW
T RET
T SUP
T EXT
10
9
5
4
3
2
1
15
14

¡
The Heat Pump is sized to provide 100% of the heating requirements on the coldest day of the year. Used in new builds or in
boiler-replacement applications.
• DirectOTCControlledHeatingLoop
• OptionalDHWstoragewithdivertingvalveorpump
Thiscongurationissuitableforlow-temperatureradiatorsandunderoorheatingsystems.
 
• SetinstallerparameterCONFtovalue1
• SetinstallerparameterP1to0(noDHW),1(DHWvalve)or2(DHWpump)
• SetP4(OTCheatingcurve)accordingtobuilding/system
 
•
SetinstallerparameterP2to0(nosecondarypump),1
(secondarypump9,ifbuffertankorhydraulicseparatorisused
•
DHW setpoint and control parameters
•
Minimum and maximum supply temperatures
•
Room temperature compensation
•
Frost Protection parameters
•
Summer switch-off setting
•
Tariff/Timerinputconguration
- Heat Pump
- Optional DHW valve/ pump
- Optional secondary pump
- Optional DHW electric heater