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エアコン Arcoaire WCA3**4のPDF 取付説明書をオンラインで閲覧またはダウンロードできます。Arcoaire WCA3**4 14 ページ。 R−410a split system air conditioner
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REFRIGERATION SYSTEM
A. COMPONENT MATCHES
Check to see that the proper system components are in
place, especially the indoor coil.
R−410A outdoor units can only be used with R−410A
specific indoor coils. If there is a refrigerant mis−match,
consult the indoor coil manufacturer to determine if a
refrigerant conversion kit is available for the indoor coil.
This outdoor unit is designed to achieve maximum
efficiency when used with indoor coils that utilize a TXV
refrigerant metering device or Piston with Teflon ring
metering device. If any other type of metering device is
installed on the indoor coil, consult the indoor coil
manufacturer to determine if a conversion kit is available.
Installing with TXV
When installing a TXV on an indoor coil, follow the
instructions provided with the new TXV.
A typical TXV installation is shown in Figure 3.
Figure 3
Typical TXV Installation
EQUALIZER
TUBE
SENSING
BULB
TXV
10 O'Clock
2 O'Clock
SUCTION TUBE
IN. OD & SMALLER
7/8
421 01 5301 02
INDOOR
COIL
SUCTION
TUBE
LIQUID
TUBE
SENSING BULB
STRAP
Specifications subject to change without notice.
R−410A Split System Air Conditioner
Installing with Indoor Piston − cooling operation.
Check piston size shipped with indoor unit to see if it
matches required indoor piston size.
If it does not match, replace indoor piston with correct
piston size. (Indoor pistons are shipped with some
outdoor models in the accessory bag and are only
qualified for Piston fan coils.)
Example fan coils with piston: FEM4P, FSM4P, FSU4P
(12 thru 4 ton).
See Figure 4.
When changing indoor piston, use a back−up wrench.
Hand tighten hex nut, then tighten with wrench 1/2 turn.
Do not exceed 30 ft−lbs.The indoor piston contains a
Teflon ring (or seal) which is used to seat against the
inside of distributor body, and must be installed properly
to ensure proper seating in the direction for cooling
operation.
Figure 4
Indoor (cooling) Piston
BRASS
HEX NUT
TEFLON SEAL
PISTON
RETAINER
STRAINER
CAUTION
!
PRODUCT OPERATION HAZARD
Failure to follow this caution may result in improper product
operation.
If using a TXV in conjunction with a single−phase reciprocat-
ing compressor, a compressor start capacitor and relay are
required. Consult outdoor unit pre−sale literature for start as-
sist kit part number.
DISTRIBUTOR
TEFLON RING
PISTON
FLOW IN
COOLING
BRASS
HEX BODY
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