CONTENTS
Safety Precautions ................................................................2
1. Selecting the Installation Site ............................................7
[1] Installation Conditions...................................................7
[2] Installation Space Requirements ..................................8
2. Unit Installation ................................................................11
3. Water Pipe Installation.....................................................12
[1] Schematic Piping Diagram and Piping System
Components ...............................................................12
[2] Notes on Pipe Corrosion.............................................13
[3] Installing the Strainer and Flow Switch.......................15
[4] Water Pipe Hole Size and Location ............................16
4. System Configurations ....................................................17
[1] Schematic Diagrams of Individual and Multiple
Systems ......................................................................17
[2] Switch Types and the Factory Settings.......................18
[3] Configuring the Settings..............................................20
5. Electrical Wiring Installation.............................................43
[1] Main Power Supply Wiring and Switch Capacity ........43
[2] Cable Connections......................................................45
6. Troubleshooting...............................................................52
[1] Diagnosing Problems for which No Error Codes Are
Available .....................................................................52
[2] Diagnosing Problems Using Error Codes ...................53
[3] Calling for Service.......................................................57
7. Operating the Unit ...........................................................58
[1] Initial Operation...........................................................58
[2] Daily Operation ...........................................................58
[3] Using the Remote Controller.......................................59
[4] Using the Unit in Sub-freezing or Snowy Conditions ..69
8. Main Specifications..........................................................70
9. Maintenance ....................................................................72
[1] Guidelines for Maintenance and Inspection of Major
Parts ...........................................................................72
Hot Water Heat Pump Unit CAHV
Installation/Operation Manual
CAHV-R450YA-HPB(-BS)
Thoroughly read this manual prior to use.
Save this manual for future reference.
Some of the items in this manual may not apply to made-to-order units.
Make sure that this manual is passed on to the end users.
WT09871X01.book 1 ページ ２０２２年７月６日 水曜日 午前１１時４４分
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