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4. HOW TO INSTALL THE OUTDOOR UNIT
4-1. Installing the Outdoor Unit
● Use concrete or a similar material to make the base, and
ensure good drainage.
● Ordinarily, ensure a base height of 5 cm or more. If a drain
pipe is used, or for use in cold-weather regions, ensure a
height of 15 cm or more at the feet on both sides of the unit.
(In this case, leave clearance below the unit for the drain
pipe, and to prevent freezing of drainage water in cold-
weather regions.)
● Refer to Fig. 4-1 for the anchor bolt dimensions.
● Be sure to anchor the feet with anchor bolts (M10). In
addition, use anchoring washers on the top side. (Use large
square 32 × 32 SUS washers with JIS nominal diameter of
10.) (Field supply)
For 8 and 10 HP unit
170
Air Intake
105
219
75
Air
Intake
Air discharge
Drain port
Big_PAC_eng.indb 32
Big_PAC_eng.indb 32
2- ø32 Specified drain port
660
110
60
75
13
13
940
Anchor bolt
(M10)
Fig. 4-1
4-2. Drainage Work
Follow the procedure below to ensure adequate draining for the
outdoor unit.
● For the drain port dimensions, refer to Fig. 4-1.
● Ensure a base height of 15 cm or more at the feet on both
sides of the unit.
● When using a drain pipe, install the drain socket onto the
drain port. Seal the other drain port with the rubber cap.
4-3. Routing the Tubing and Wiring
● The tubing and wiring can be extended out in 4 directions:
front, rear, right, and down.
● The service valves are housed inside the unit. To access
them, remove the inspection panel. (To remove the
inspection panel, remove the 3 screws, then slide the panel
downward and pull it toward you.)
(1) If the routing direction is through the front, rear, or right,
use a nipper or similar tool to cut out the knockout holes for
the inter-unit control wiring outlet, power wiring outlet, and
tubing outlet from the appropriate covers A and B.
(2) If the routing direction is down, use a nipper or similar tool
to cut out the lower flange from cover A. (Fig. 4-2)
Inter-unit control wiring
outlet
Inspection panel
Cover A
Front
Power wiring outlet
CAUTION
● Route the tubing so that it does not contact the
compressor, panel, or other parts inside the unit.
Increased noise will result if the tubing contacts these
parts.
● When routing the tubing, use a tube bender to bend the
tubes.
● In cold-weather regions, in order to prevent drainage
water from freezing, do not install the drain socket cap.
Also take steps to prevent water from accumulating
around the unit.
32
Rear
Cover B
Right
Down
Tubing outlet
Fig. 4-2
2009/08/26 16:33:15
2009/08/26 16:33:15
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