Rheem RPVS Series Installation, Operation & Maintenance Instructions Manual page 16

R e s i d e n t i a l S p l i t
R e v. : 1 3 M a r c h , 2 0 1 5
Refrigeration Installation
Figure 7: Braze Instructions
Nitrogen Braze
Replace Caps after adjusting
service valves
CCW
CCW
Service ports for
gauges
Table 6: Service Valve Positions
Position
CCW - Full Out
CCW - Full Out 1/2 turn CW
CCW - Full In
Re-Using Existing Line Set - R-22 to HFC-410A
Conversion
New line sets are always recommended, but are required if;
• The previous system had a compressor burn out.
• The existing line set has oil traps.
• The existing line set is larger or smaller than the
recommended line set for the HFC-410A system.
• The existing line set is damaged, corroded, or shows signs
of abrasion/fatigue
16
Fully Insulated
Vapor
Suction Line
Fully Insulated
Liquid Line
Rev. 05/31/00
Description
System
Operation Position Open
Open
Service Position
Closed
Shipping Position
Figure 8: Air Coil Connection
Bulb
(Must be
Installed and
Insulated)
Suction Line
Liquid Line
WARNING! If at all possible, it is recommended that a
new line set be used when replacing an existing R-22
system with an HFC-410A system. In rare instances
where replacing the line set is not possible, the line set
must be fl ushed prior to installation of the HFC-410A
system. It is also important to empty all existing traps.
Polyolester (POE) oils are used in units charged with
HFC-410A refrigerant. Residual mineral oil can act as an
insulator on the wall of the coil tubing, hindering proper
heat transfer and thus reducing system effi ciency and
capacity. Another important reason to thoroughly fl ush
the line set is remove any trash and other contaminants
that may be present which could clog the thermal
expansion valve.
Failure to properly fl ush the system per the instructions
below will void the warranty.
WARNING! The Environmental Protection Agency
prohibits the intentional venting of HCFC and HFC
refrigerants during maintenance, service, repair and
disposal of appliance. Approved methods of recovery,
recycling or reclaiming must be followed.
Service
Port
Closed
CAUTION! This procedure should not be performed
Open
on systems which contain containments (Example:
Open
compressor burn out).
Required Equipment
The following equipment will be required in order to fl ush the
indoor coil and existing line set:
• Two R-22 recovery cylinders
• Refrigerant recovery machine with a pump down feature
• Two sets of gauges (one used for R-22 and one used with
the HFC-410A).
• Cylinder of clean R-22 (minimum amount required to
adequately fl ush shown below)
TXV ('IN' toward
compressor section)
Equalizer
Line
TXV has internal
check valve
WARNING!
WARNING!
CAUTION!
FP2
Sensor