Field Refrigerant Piping - Daikin VRV III REMQ72PBYD Engineering Data

EDUS391004-N
3.2

Field Refrigerant Piping

3.2.1 Heat Pump Series
1. The following materials should be used for all refrigerant piping.
 Materials: Deoxidized phosphorous seamless copper pipe or equivalent
2. The tips for insulation
 Both Gas, Liquid piping must be insulated.
 Materials: Glass fiber or heat resistant polyethylene foam.
Thickness: 1/2 inch or more
 Insulation of both liquid and gas pipe
3.2.2 Heat Recovery Series
 Suction, Discharge Gas piping, liquid piping must be insulated.
 Example of thermal insulation work.
 3 piping section (between outdoor unit and Branch Selector
unit)
Installation of Outdoor Units
 2 piping section (between Branch Selector unit and indoor
unit)
REFNET Pipe System
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