Pioneer WYT Inverter Series Installation & User Manual page 36

Outdoor Unit Installation Instructions
Instructions for Connecting Piping
to Outdoor Unit
1. Unscrew the cover from the packed valve on
the side of the outdoor unit.
2. Remove protective caps from the valve ends.
3. Align flared pipe end with each valve, and
tighten the flare nut as tightly as possible
by hand.
4. Using a spanner, grab the body of the valve.
Do not grab the nut that seals the service
valve.
USE SPANNER TO GRAB THE
BODY OF THE SERVICE VALVE
Torque from tightening the flare nut can snap
off other parts of valve.
5. While firmly gripping the body of the valve,
use a torque wrench to tighten the flare
nut according to the correct torque values.
6. Loosen the flaring nut slightly, then tighten
again.
7. Repeat Steps 3 to 6 for the remaining pipe.
Page 36
 
MINIMUM BEND RADIUS
When bending connective refrigerant piping,
the minimum bending radius is 10 cm (4").
Valve Cover
DO NOT USE EXCESSIVE TORQUE
Excessive force can break the nut or damage
the refrigerant piping. You must not exceed
the torque requirements shown in the table
shown on page 29.
Service Port Nut
Radius ≥10cm (4 in)
Indoor Unit
Gas Valve
Tap
Protection Caps
Gas Tap
Liquid Tap
7
Liquid Valve