Hitachi YUTAKI Series - Page 72

Controller pack
Service Manual
70
Contents
SMGB0066 rev.0 - 12/2009
4.6. Boiler control functions ................................................................................................................95
4.6.1. Boiler Control..........................................................................................................................................95
4.6.2. Supply-Return Difference Check ............................................................................................................96
4.6.3. Boiler Minimum On / Off Times ..............................................................................................................97
4.6.4. Boiler Waiting Time ................................................................................................................................97
4.6.5. Maximum Outdoor Temperature for Boiler Operation ............................................................................97
4.7. Electric heater control functions ..................................................................................................98
4.7.1. Electric Heater Control ...........................................................................................................................98
4.7.2. Supply-Return Difference Check ............................................................................................................99
4.7.3. Electric Heater Waiting Time ................................................................................................................100
4.7.4. Electric Heater Return High Limit Check ..............................................................................................100
4.7.5. Maximum Outdoor Temperature for Electrical Heater Operation .........................................................101
4.8. Mixing valve control functions ...................................................................................................101
4.8.7. Mixing Valve Control ............................................................................................................................101
4.8.2. Mixing / Bypass Valve Control ..............................................................................................................102
4.8.3. Mixed Heating Circuit Maximum Temperature Limit Protection ............................................................102
4.8.4. Mixing Valve Opening Delay ................................................................................................................102
4.9. General functions ......................................................................................................................103
4.9.1. System Frost Protection .......................................................................................................................103
4.9.2 Automatic Summer Switch-Off .............................................................................................................103
4.9.3. Pump and Valve Seizure Protection .....................................................................................................104
4.9.4. Screed Function (Drying for New Floors) .............................................................................................104
4.10. Parameter tables .......................................................................................................................105
4.10.1 Installer Parameters .............................................................................................................................105
4.10.1. Engineering Parameters ......................................................................................................................106
4.11. Conversion table: heat pump supply temperature to mA ..........................................................108
4.12. R resistance tables ....................................................................................................................108
4.13. Technical data ...........................................................................................................................109
4.13.1. System Controller (XEK23232 A) .........................................................................................................109
4.13.2. Water Temperature Sensor (XEK35524 A) ..........................................................................................109
4.13.3. Outdoor Temperature Sensor (XEK35438 A) .......................................................................................109
4.14. Mounting....................................................................................................................................110
4.14.1. Fitting or removing the front cover ....................................................................................................... 110
4.14.2. Wall Mounting ....................................................................................................................................... 110
4.14.3. Mounting on a DIN-rail ......................................................................................................................... 111
4.15. Mounting the Sensors ............................................................................................................... 111
4.15.1. Water Temperature Sensor .................................................................................................................. 111
4.15.2. Outside Temperature Sensor ............................................................................................................... 112