Pioneer WYT Inverter Series Installation & User Manual page 29

Indoor Unit Installation Instructions
Connecting the Refrigerant Piping to the Indoor Unit
Once the copper piping kit coil is unwound,
refer to the below instructions to proceed:
1. Bring the ends of both the copper line and
the indoor unit line together. Align the
centers of the pipes that will be connected.
2. Remove the indoor unit piping cap, and
check that no debris is inside. Some gas
may be heard escaping, it is just nitrogen.
3. Use any leak guard or leak sealant on the
flares of the piping if available. Attach the
flare nut and tighten as much as possible by
hand. Torque correctly to the specifications
found on the next page using two wrenches.
Repeat the process for the other copper line.
TIGHTENING TORQUE FOR PROTECTION CAPS AND FLANGE CONNECTION
PIPE
1/4"
( 6.35)
3/8"
( 9.52)
1/2"
( 12.7)
5/8"
( 16)
Wrapping the Lines and Mounting the Indoor Unit
For mounting the indoor unit, proceed as follows:
1. Arrange the pipes, cables, and drain hose well.
2. Lag the pipe joints with insulation material, and
secure with vinyl tape as depicted in the figure.
3. Run the bound bundle through the wall hole,
and mount the indoor unit securely onto the
mounting plate. Press/push the lower part of the
indoor unit so it clicks onto the mounting plate.
TIGHTENING TORQUE CORRESPONDING STRESS
[N x m] (using a 20 cm wrench)
15 - 20 Wrist Strength
Arm Strength
31 - 35
Arm Strength
35 - 45
75 - 80 Arm Strength
Torque Wrench
TIGHTENING TORQUE
[N x m]
Service Port Nut 7 - 9
Protection Caps 25 - 30
Covered by Vinyl Tape
Insulation
Refrigerant
Sleeve
Pipe
Connection
Cable
Refrigerant
Pipe
Condensed Water
Drain Pipe
6
Mounting Plate
Page 29
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