Hitachi YUTAKI Series - System Testing; System Start-Up; System Test

Controller pack
Service Manual
126
System testing
SMGB0066 rev.0 - 12/2009
        
P33
Return temperature
limit offset
-2345
Control parameter to prevent electric heater use when the
return temperature is too high for heat pump operation.
1,
then
OFF
15 1 OFF
P34
DHW electric heater
waiting time (not
available if P1=0)
12---
Sets the time to wait after starting to heat the DHW tank
before enabling the special output for “DHW electric heater
enable”.
0 60 1 45 min.
P35
Mixing valve opening
delay time
---45
Orsolidfueloroilredboiler.Preventsthemixingvalve
opening for the set delay time to allow the boiler to heat up.
1,
then
OFF
20 1 OFF

note
Operational data shown depends on the system conguration (CONF) setting. -
Zone 1 is the heating loop controlled by the System Controller. -
Zone 2 is the heating loop controlled by the Extension Controller. -
*

Maximumsupplytemperaturelimitdependsonconguration
CONF 1: limit = 55°C
CONF 2: limit = 65°C
CONF3,4,5: limit=55°C

 
Aftertheinstallationofsensorsandoutputs,thecontrollercanbestartedforthersttime.
Switch on the mains power supply.
Thecontrollerwillbeinitialisedwiththedefaultcongurationstoredintheinternalmemory.
Atestprocedureisperformedtocheckthevalidityofthedataintheinternalmemory,andthevariousinputsaretested.All
sensors and communications devices are automatically detected. All faults and warnings are automatically reset and the
software version is displayed for reference.
 
Oncethesystemhasbeeninstalled,itisrecommendedthatthefollowingtestsarecarriedout:
Checkthatyouhaveselectedthecorrectconguration,andthatthenecessaryinstallationparametershavebeenset.1.
Check the wiring of the inputs and outputs. Use the procedure in 7.3 to view the temperature sensor values. Using the 2.
procedurein4.20.4,itispossibletomanuallyoverridetheoutputstotestthesystemoperation.
CheckthattheRoomUnitiscommunicatingwiththeRFReceiver.Todothis,changethetemperaturesetpointonthe3.
Room Unit to the maximum or minimum value and check that the heat pump reacts appropriately