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Hydro Unit
Installation Manual
Contents
1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 ACCESSORY PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 PREPARATIONS FOR INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
4 PRECAUTIONS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
5 EXAMPLE OF HYDRO UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 MAIN COMPONENTS OF HYDRO UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 HYDRO UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8 START UP AND CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9 TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
10 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
11 SENSOR TEMPERATURE MONITORING FUNCTION . . . . . . . . . . . . . . . . . . . . . . . 39
12 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Please read this Installation Manual carefully before installing the Air to Water Heat Pump.
• This Manual describes the installation method of the hydro unit.
• For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit.
ADOPTION OF NEW REFRIGERANT
This Air to Water Heat Pump is a new type which adopts a new refrigerant HFC (R410A) instead of the
conventional refrigerant R22 in order to prevent destruction of the ozone layer.
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Summary of Contents for ESTIA HWS-1402XWHM3-E
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