Daikin LREQ15B7Y1R, Installation Manual

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20B7Y1R
Air cooled refrigeration condensing unit
4P360438-1B – 2014.01
Installation manual
6
4. HANDLING THE UNIT
1.
Decide on the transportation route.
2.
If a forklift is to be used, pass the forklift arms through the large
openings on the bottom of the unit.
1 Opening (large)
2 Fork
3 Fixed screws of transportation clasp
4 Transportation clasp (yellow)
If hanging the unit, use a cloth sling to prevent damaging the unit.
Keeping the following points in mind, hang the unit following the
procedure shown in the following figure.
• Use a sling sufficiently strong to hold the mass of the unit.
• Use 2 belts of at least 8m long.
• Place extra cloth in the locations where the casing comes in
contact with the sling to prevent damage.
• Hoist the unit making sure it is being lifted at its center of gravity.
1 Belt sling
2 Patch cloth
3 Belt sling
4 Patch cloth
5 Opening (small)
3.
After installation, remove the transportation clasp (yellow) attached
to the large openings.
Note
Apply a filler cloth on a fork to prevent coating of the bottom frame from
coming off and rust from occurring when bringing in the unit with anti-
corrosion treatment type using a forklift.
5. PLACING THE UNIT
• Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise.
• The base should be bigger around than the width of the unit’s legs
(66 mm), and should support the unit.
If protective rubber is to be attached, attach it to the whole face of
the base.
• The height of the base should be at least 150 mm from the floor.
• Secure the unit to its base using foundation bolts. (Use four
commercially available M12-type foundation bolts, nuts, and
washers.)
• The foundation bolts should be inserted 20 mm.
Base form
Note
• When installing on a roof, make sure the roof floor is strong enough
and be sure to water-proof all work.
• Make sure the area around the machine drains properly by setting
up drainage grooves around the foundation.
Drain water is sometimes discharged from the outdoor unit when it
is running.
• If the condensing unit is of brine
damage resistant or heavy brine
damage resistant type, use nuts
provided with resin washers to secure
the product to the foundation bolts (see
the illustration on the right-hand side).
The rustproof effect of the nut will be lost if the coatings on the
tightening portions of the nuts come off.
6. REFRIGERANT PIPING
To Piping Work Contractors
• Never open the shutoff valve until the steps specified in "7. FIELD
WIRING" on page 13 and "8-3 Checking of device and installation
conditions" on page 18 of piping.
• Do not use flux at the time of brazing and connecting refrigerant
pipes. Use phosphorous copper brazing filler metal (BCuP-2),
which does not require flux. Chlorine-based flux causes piping
corrosion. Furthermore, if fluoride is contained, the flux will have
adverse influences on the refrigerant piping line, such as the
deterioration of refrigerating machine oil.
CAUTION
• All field piping must be installed by a licensed refrigeration
technician and must comply with relevant local and national
regulations.
[Precautions for reuse of existing refrigerant piping/heat
exchangers]
Keep the following points in mind for the reuse of existing
refrigerant piping / heat exchangers.
A malfunction may result if there is deficiency.
1
2
4
3
1
2
3
4
5
20
•
•
•
•
•
•
Independent
foundation Beam
foundation
(horizontal) Beam
foundation
(vertical)
Center of the product
Center of the product
A
B
729 765
(Depth of product)
631
(Inner dimension
of the base) 765 or more
(Outer dimension
of the base)
Base width and base bolt positions
Foundation bolt point
(4-15 × 22.5)
LREQ15, LREQ20 1240 1102
Model A B
(Unit : mm)
Resin
washers