Selection Of Suspension Bolts And Tubing Positions; Indoor Unit Preparation - Mitsubishi Electric PCA-RP KA Installation Manual

3. Installing the indoor unit
190
80 ø65
Fig. 3-3
Fig. 3-4
(mm)
Fig. 3-5
Fig. 3-6
4
70
175
ø100
125
7~12
3.2.3. Selection of suspension bolts and tubing positions (Fig. 3-3)
Using the pattern paper provided for installation, select proper positions for suspen-
sion bolts and tubing and prepare relative holes.
A Pattern paper
B Suspension bolt hole
C Indoor unit width
Secure the suspension bolts or use angle stock braces or square timbers for bolt
installation.
D Use inserts of 100 kg to 150 kg each.
E Use suspension bolts of W3/8 or M10 in size.
3.2.4. Indoor unit preparation (Fig. 3-4)
1. Install the suspending bolts. (Procure the W3/8 or M10 bolts locally.)
Predetermine the length from the ceiling (1 within 100 mm).
A Ceiling surface B Suspending bolt C Suspending bracket
2. Remove the intake grille.
Slide the intake grille holding knobs (at 2 or 3 locations) backward to open the
intake grille.
3. Remove the side panel.
Remove the side panel holding screws (one in each side, right and left) then slide
the side panel forward for removal.
D Intake grille
E Intake grille holding knob
F Slide
G Hinge
H Pushing the hinge, pull out the intake grille.
2 Forcing open the intake grille or opening it to an angle of more than 120° may
damage the hinges.
3.3. Installing the indoor unit (Fig. 3-5)
Use a proper suspending method depending on the presence or absence of ceiling
materials as follows.
A In the presence of ceiling materials
B In the absence of ceiling materials
a Suspending bracket
b Unit
1) Directly suspending the unit
Installing procedures
1. Install the washer 1 (supplied with the unit) and the nuts (to be locally procured).
2. Set (hook) the unit through the suspending bolts.
3. Tighten the nuts.
Check the unit installing condition.
• Check that the unit is horizontal between the right and left sides.
• Check that the front and the rear of suspending brackets are horizontal.
(To keep drainage,the unit is inclined to the suspending brackets. The unit slopes
continuously downward from the front to the rear is the right installation position.)
2) Installing the suspending bracket fi rst onto the ceiling (Fig. 3-6)
Installing procedures
1. Remove the suspending brackets and U-shaped washers from the unit.
2. Adjust the suspending bracket holding bolts on the unit.
3. Attach the suspending brackets to the suspending bolts.
4. Check that the suspending brackets are horizontal (front and rear / right and left).
5. Set (hook) the unit to the suspending brackets.
6. Tighten fi xed bolts of the suspending brackets.
w Be sure to install the U-shaped washers.
A Suspending bracket holding bolt
B Unit
C U-shaped washer
D Suspending bolt
E Washer 1
F Double nuts
J Slide the side panel forward.
K Side panel
L Remove the side panel holding screws.
M Remove the protective vinyl of vane.
c Ceiling
d Suspending bolt
e Washer 1
f Washer (Local procurement)
g Double nuts
G
RP50 882-887
RP60,71 1202-1207
RP100 -140 1522-1527
(mm)