Toshiba HWS-802XWHM3-E - Matters to Confirm First; Non-Defective Operation

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7. HYDRO UNIT INSTALLATION MANUAL
Engineering Data Book
Contents
1 GENERAL INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
2 ACCESSORY PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
3 PREPARATIONS FOR INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
4 PRECAUTIONS FOR SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
5 EXAMPLE OF HYDRO UNIT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6 MAIN COMPONENTS OF HYDRO UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7 HYDRO UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
8 START UP AND CONFIGURATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
9 TEST RUN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
10 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
11 SENSOR TEMPERATURE MONITORING FUNCTION . . . . . . . . . . . . . . . . . . . . . . . 101
12 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
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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