Installation guide

Table 1--Refrigerant Connections and Recommended Liquid and Va
LIQUID VAPOR
UNIT SIZE
Connection Diameter Tube Diameter Connection Diameter Tube Diameter
0t8, 024 3/8 3/8 5/8 5/8
030, 036 3/8 3/8 3/4 3/4
042, 048 3/8 3/8 7/8 7/8
060 3/8 3/8 7/8 1-1/8
_or Tube Diameters (In.)
VAPOR (LONG LINt=)
Connection Diameter Tube Diameter
5/8 3/4
3/4 7/8
7/8 1-1/8
7/8 1-1/8
NOTES:
1 Tube diameters are for lengths up to 50 ft. For tubing lengths greater than 50 ft, consult the Application Guideline and Service Manual--Air Conditioners and Heat
Pumps Using Puron® Refrigerant
2 Do not apply capillary tube indoor coils to these units
14. (onnect equalizer robe of TXV to 1i4qn. equalizer fitting on
vapor line adapter. Use backnp wrench to prevent damage to
equalizer fitting.
15. Proceed with remainder of unit installation
Step 7--Make Piping Connections
Relieve pressure and recover all refrigerant be%re system
repair or final unit disposal to avoid personal inju_ or death.
Use all smwice ports and open all flow°contIol devices,
including solenoid valves.
To prevent improper perfbm_ance and/or unit component
failures, do not leave system open to atmosphere any longer
than minimum required for installation POE oil in compres=
sot is extremely susceptible to moisture absorption. Always
keep ends of robing sealed during installation.
To prevent improper per_:brmance or equipment fitilure this
caution must be fPllowed. If ANY refrigerant robing is
buried, provide a 6 in. vertical rise at service valve. Refrig=
erant robing lengths up to 36 in. may be buried without further
special consideration Do not bury lines longer than 36 in.
To prevent damage to unit or service valves observe the
following:
*Use a brazing shield
* Wrap service valves with wet cloth or use a heat sink
material.
Outdoor units may be connected to indoor section using accesso_-
tubing package or field-supplied refrigerant grade robing of correct
size and condition. For robing requirements beyond 50 ft, substan=
tia] capacity and performance losses can occur Following the
recommendations in the Application Guideline and Service
Manual Residential Split=System Air (onditioners and Heat
Pumps Using Puron(_-': Refrigerant will reduce these losses. Refer
to Table 1 _br field robing diameters. Refer to Table 2 for
accessory requirements.
There are no buried-line applications greater than 36 in.
If refi'igerant robes or indoor coil are exposed to atmosphere, they
must be evacuated to 500 microns to eliminate contamination and
moisture in the system.
OUTDOOR UNIT CONNECTED TO FA( TORY-APPROVED
INDOOR UNIT
Outdoor unit contains con'ect system re_:i'igerant charge _br opera-
tion with ARI rated indoor unit with highest sales volume when
connected by 15 ft of []eld-supplied or _ctory-accesso_- robing.
(beck refrigerant charge _br maxinmm efficiency
INSTALL LIQUID-LINE FILTER DRIER
To avoid per%finance loss and compressor _ilure, installa=
tion of filter &ier in liquid line is required
Re_r to Fig. 6 and install filter drier as _bllows:
1. Braze 5-in. connector tube to liquid service valve Wrap filter
&ier with damp cloth
2. Braze filter drier between connector robe and liquid tube to
indoor coil. Flow arrow must point towards indoor coil.
REFRIGERANT TUBING
(onnect vapor tube to fitting on outdoor unit vapor service valves.
(onnect liquid robe to filter drier (See Fig 6 and Table 1.) Use
refrigerant grade robing.
SWEAT CONNECTION
To avoid valve damage while brazing, service valves must be
wrapped in a heat-sinking mate*ial such as a wet cloth
Use refiigerant grade robing Service valves are closed from
facto W and ready for brazing Aker wrapping service valve with a
wet cloth, braze sweat connections using industry accepted meth-
ods and materials. Consult local code requirements. Refrigerant
robing and indoor coil are now ready for leak testing. This check
should include all field and facto W joints.
EVACUATE REFRIGERANT TUBING AND INDOOR COIL
a
To avoid compressor damage, never use the system compres°
sot as a vacmlm pump
Refiigerant robes and indoor coil should be evacuated _lsing the
recommended deep vacuum method of 500 microns. The alternate
triple evacuation method may be used if"the procedure outlined
below is _bllowed Always break a vacuum with dW nitlogen.
Deep Vacuum Method
The deep vacuum method requires a vacuum pump capable of
pulling a vacuum of 500 microns and a vacuum gage capable of
accurately measuring this vacuum depth, The deep vacuum
method is the most positive way of assuring a system is _:i'eeof air
and liquid water. (See Fig. 7,)