Daikin RWEYQ72, Engineeiring Data

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EDUS30-900-N Installation
Installation of Outdoor Units 35
4.
Strainer
Install the strainer (accessory) without fail at the inlet of water
piping. (If sands, wastes, rust particles, etc. are mixed in the
water circulation system, damage to the plate type heat
exchanger may be caused by the corrosion of metal materials
and clogging of the heat exchanger.)
WARNING
Do not install in the following locations.
• Locations such as kitchens which contain a lot of mineral oil or
steam in the atmosphere or where oil may splatter on the unit.
Resin parts may deteriorate, causing the unit to fall or leak.
• Locations where sulfurous acids and other corrosive gases may
be present in the atmosphere.
Copper piping and soldered joints may corrode, causing refriger-
ant to leak.
• Locations where equipment that produces electromagnetic waves
is found.
The electromagnetic waves may cause the control system to mal-
function, preventing normal operation.
4. INSPECTING AND HANDLING THE
UNIT
At delivery, the package should be checked and any damage should
be reported immediately to the carrier claims agent.
When handling the unit, take into account the following:
1.
Fragile, handle the unit with care.
Keep the unit upright in order to avoid compressor damage.
2.
Choose the path along which the unit is to be brought in ahead of
time.
3.
In order to prevent any damage to the unit during installation, use
slings (cloth) or patch plates and lift the unit referring to figure 4.
4.
Lift the unit preferably with a crane and 2 belts of at least 27 ft long.
5.
When lifting the unit with a crane, always use protectors to prevent
belt damage and pay attention to the position of the unit’s center of
gravity.
6.
Be sure use the standard supplied accessories and dedicated
parts as installation parts.
(Refer to figure 4)
1.
Patch plates or clothes
2.
Belt sling
NOTE
•
Use belt sling of 13/16” width or less which adequately bears the
weight of the product.
5. UNPACKING AND PLACING THE UNIT
• Make sure the area around the machine drains properly by setting
up drainage grooves around the foundation.
• Make sure the unit is installed level on a sufficiently strong base to
prevent vibration and noise.
• Secure the unit to its base using foundation bolts. (Use four com-
mercially available M12-type foundation bolts, nuts, and washers.)
• The foundation bolts should be inserted 13/16”.
• Fix 4 foundation bolts.
• Support the unit with the foundation which is
larger than the hatched area shown in figure 5.
(Refer to figure 5)
1.
Front side
2.
Position of foundation bolts
3.
Hole for a foundation bolt
(

11/16 ida. holes at 4 corners)
4.
Avoid such a foundation where the unit is supported by
4 corner points.
CAUTION
•
When installing the unit closely contacting the wall for any
unavoidable reason, arrange so that no vibration from the unit
may be transmitted to the wall surface by insulating the vibration
using cushions, etc.
NOTE
•
Prepare a water drainage channel around the foundation to con-
densate waste water from around the unit.
•
If the unit is to be installed on a roof, check the strength of the roof
and its drainage facilities first.
•
Make sure the area around the machine drains properly by setting
up drainage grooves around the foundation.
(Condensate water is sometimes discharged from the condenser
outside unit when it is running.)
•
Use a nut with a resin clip plate to protect the nut tightening part
from rusting.
6. WATER PIPING WORK
• The water pressure resistance of water piping of this condenser
outside unit is 285 psi.
• The connection port for water piping is located in the front. The
connection ports for drain piping are located in the front and back.
When using the back port, change the cast iron plug from the back
to the front and securely close it.
• Because of indoor use, carry out piping work in such a way no
water may drop on the outer plate.
• Drain piping should be short and have a slant downwards.
The diameter of drain pipe should be the same as the diameter of
unit connection (1/2) or more.
• The diameter of water pipe should be the same as the diameter of
unit connection (1-1/4) or more.
• Install an air purge valve in the midway of the water piping to pre-
vent cavitation.
• After completing the drain piping work, make sure that the water
runs smoothly without any clogging by dust.
• Do not connect the drain outlet to the water outlet.
• Install the strainer (accessory) in the inlet of water piping within a
distance of 4.9 ft from the outside unit.
(If sand, waste or rust particles are mixed in the water circulation
system, metal materials will become corrosive.)
• Install insulation on the inlet/outlet of water piping to prevent con-
densation and freezing.
At installing insulation on water in/outlet pipe, use Polyurethane
form thickness 3/16 in. for insulation of water piping socket on heat
exchanger.
• Install insulation up to the base of heat exchanger as shown in the
figure 6.
• Install a gate valve for chemical cleaning in an easy position to
handle.
• Use water pipes complied that comply with the local and national
codes.
• Run the water pump to flush inside of water piping.
Then, clean the strainer.
• If there is a possibility of freezing, take measures to prevent freezing.
• Tighten securely the connection of water piping and socket with
tightening torque of 220 lbf·ft or less.
(If a large torque is applied, the unit may be damaged.)
(Refer to figure 6)
1.
Air parge
2.
Outlet of water
3.
Inlet of water
4.
Gate valve
5.
Water piping socket
6.
Water piping
7.
Insulation
8.
Heat exchanger
9.
Strainer (accessory)
10.
Drain valve
11.
Connection port to draining piping
12.
Insulation cover
13.
3-1/8 in. or less
14.
Insulation of water piping socket
13/16”
Resin clip plate