Trane 4TXM2318BF300AA Service Manual page 58

3. Ceiling Hole & Reinforcement
(1) Cut and withdraw the foundation of ceiling according to the size of indoor unit.
(2) After cutting an appropriate hole, reinforce the cutting area on the foundation of indoor unit, and append the rim
to the ceiling to secure its foundation. In order to prevent the ceiling from vibrating, it is vital to reinforce the ceiling
foundation and ensure the original levelness of the ceiling.
4. Hoisting Stud Installation
• To support the weight of the unit, use barb bolts in the situation with the ceiling. In the situation with the new
ceiling, use inlaid bolts, embedded bolts or other parts provided on site. Before proceeding the installation, adjust
the gap between the bolts and the ceiling.
• Use four M10 hoisting studs (provided on site) (when the height of the hoisting stud exceeds 0.9m, M10 studs
should be used.). The gaps should be kept according to the overall drawing of the air conditioner. Make the
installation according to regulations for various building structures as to ensure the safety. Use the level meter to
perform the parallel installation.
Ceiling Suspending
Situation with New Ceiling
(1) Install the indoor unit temporarily:
attach the hoisting foot to hoisting stud. Make sure that nuts and washers should be used at two ends of the foot to
secure the foot.
(2) For the size of the ceiling hole, please refer to the schematic drawing at the previous page.
<After finishing the installation of the ceiling>
(3) Adjust the unit to the proper installation location.
(4) Check if the unit is in the horizontal level:
The indoor unit is equipped with a built-in drainage pump and a floater switch. Check if the 4 angles of the unit are
in the horizontal level with the water level or the polythene tube with water, as shown in the figure,taking only one
indoor unit as an example. If the unit inclines opposite to the direction of condensate flow, the floater switch might
have faults, causing water dropping. (When lifting can be tilted to the drain, the long side of the horizontal height
difference 0 ~ 10mm.)
(5) Tighten the nut on the washer.
(6) Remove the mounting cardboard.
Situation with Original Ceiling
(1) Install the indoor unit temporarily: attach the hoisting foot to
hoisting stud. Make sure that
nuts and washers (provided on site) should be used at two ends
of the foot to secure the foot.
(2) Adjust the height and location of the unit.
(3) Perform Step 4 and 5 in Situation with New Ceiling.
water level OR polythene tube
nut (provided on site)
washer
tightening (dual nuts)
[secure hoisting foot]
56
washer
hoisting foot
[secure washer foot]