Lennox VHA 30, Installation Operating & Maintenance Manual, Page: 23 / 46

28K/30K/40K
Gas side piping
Liquid side piping
Torque wrench
Outdoor unit
1 2
4 3
5 6
CLAMP
(Ø10.7)
TO INDOOR UNIT CONNECTOR POWER SUPPLY
–22–
1) Connecting pipings to outdoor unit
Align the center of the pipings and sufficiently
tighten the flare nut with fingers.
Finally tighten the flare nut with torque wrench
until the wrench clicks.
• When tightening the flare nut with torque wrench,
ensure the direction for tightening follows the
arrow on the wrench.
2) Connecting cable to outdoor unit
Open the control board cover from the outdoor unit
by removing the screws.
Connect wires to the terminals on the control
board individually and secure the cables onto the
control board with clamp.
■
Connecting Piping and the Cable to Outdoor Unit
PIPE SIZE TORQUE
3/8" 4.2 Kg.m
1/2" 5.5 Kg.m
5/8" 5.5 Kg.m
3/4" 6.5 Kg.m
Perform grounding
• This product should be grounded.
• Defective grounding could cause an electric shock.
CAUTION