Manual

I Split System Condensers R410-A Installation Instructions I
Installing Refrigerant Lines
Component Matches
Check to see that you have the proper system compo-
nents. ONLY R410-A APPROVED MATCHED SYSTEM
COMPONENTS MAY BE USED. Refer to the Split Sys-
tem Summary or www.ariprimenet.org for match data
and orifice sizes.
The outdoor units are shipped with a refrigerant charge to
match the indoor unit and 25 ft. (7.5m) of refrigerant line. If
shorter or longer lines are used, the charge will have to be
adjusted.
TOTAL LENGTH OF REFRIGERANT LINES MUST NOT
EXCEED 75 ft. WITH A MAXIMUM VERTICAL SEPARA-
TION OF 50 ft. BETWEEN THE OUTDOOR AND IN-
DOOR UNITS WITH 2 TRAPS,
NOTE: A crankcase heater must be used when refriger-
ant lines exceed 50 ft.
REFRIGERANT TUBING AND FLOW CONTROL (Fig. 3)
Field-supplied tubing must be of refrigerant grade. Suction tube
must be insulated. Do not use damaged, dirty, or contaminated
tubing because it may plug refrigerant flow-control device. AL-
WAYS evacuate the coil and field-supplied tubing to 500 microns
before opening outdoor unit service valves.
CAUTION: Braze with SiI-Fos or Phos-copper on copper to
copper joints and wrap a wet cloth around rear of fitting to
prevent damage to TXV.
Figure 3 I Refrigerant Flow-Control Device
Refrigeration Line Sets
Ifit is necessary toadd tubing in the field, use dehydrated or
dry sealed deoxidized copper refrigeration tube. DO NOT
use copper water pipe.
CAUTION
If ANY refrigerant tubing is buried, provide a 6 in. verti-
cal rise at service valve. Refrigerant tubing lengths up
to 36 in. may be buried without further special consider-
ation. For lengths above 36 in., contact the factory.
It is important that notubing is cut or seals broken until
you are ready to actually make connections to the
evaporator and to the condenser section.
Do not remove rubber plugs or copper caps from the
tube ends until ready to make connections at evapora-
tor and condenser.
CAUTION
Do not leave system open to atmosphere any longer
than minimum required for installation. POE oil in com-
pressor is extremely susceptible to moisture absorp-
tion. Always keep ends of tubing sealed during
installation.
Be extra careful with sharp bends. This tubing can "kink"
very easily, and if this occurs, the entire tube length will
have to be replaced. Extra care at this time will eliminate
future service problems.
Suspension And Installation Of
Refrigeration Lines
DO NOT fasten liquid or suction lines in direct contact with
the floor or ceiling joist. Use an insulated or suspension
type of hanger. Keep both lines separate, and insulate the
suction line. Both lines should be insulated in long runs in
an attic or underground in a raceway.
Do not let refrigerant lines come in direct contact with
foundation. When running refrigerant lines through the
foundation or wall, the openings should be made large
enough to allow for a sound absorbing material to be
placed or installed between the tubing and the foundation.
This will prevent noise transmission between the tubing
and the wall section (foundation) or the building.
Installation Instructions For Condensing
Units That Are Higher Than Evaporator
It is recommended that vertical suction risers not be up-
sized. Proper oil return to the compressor should be main-
tained with suction gas velocity. If velocities drop below
1500 fpm (feet per minute), oil return will be decreased. An
oil trap should be installed every 20' of vertical suction line
riser (condenser above evaporator.) Refer to line sizing
charts.