Refrigerant Pipe Connection - Lennox VRF VEHD019N432U Installation & Operation Instructions

bolt. Be sure to fix it securely by using a nut and washer from upper and lower sides of the hanger
bracket. The washer fixing plate will prevent the washer from falling.
(4) The usage of paper pattern
Refer to paper pattern of installation for ceiling opening dimension. The center of ceiling
opening is indicated on the paper pattern. Fix the paper pattern to the unit with 4 screws and fix
the corners of the waterspout at the drainage pipe by screws.
(5) Adjust the unit to the right position.
(6) Check the level of the unit
The indoor unit is equipped with build-in water pump and float switch, verify the levelness of 4
directions by level gauge or vinyl tube (filled with water) respectively.
(7) Remove the washer locating plate and then tighten the nut on it.
(8) Remove the paper pattern.

4.2 Refrigerant Pipe Connection

(1) Aim the flaring port of copper pipe at the center of screwed joint and then tighten the
flaring nut with hand as shown in fig 4.2.
(2) Tighten the flaring nut with torque wrench.
Fig.4.2
High ESP Fan Coil Indoor Unit
Fig 4.1.6
Fig 4.1.7
Torque for tightening nut
Pipe diameter
mm(inch)
9.52(3/8)
15.9(5/8)
19.04(3/4)
10
Torque (N·m)
35-40
60-65
70-75