Brazing Procedures; Piping Panel Removal And Line Set Preparation; Cap And Core Removal - Lennox XP25-024-230-01 Installation And Service Procedure

1
PIPING PANEL REMOVAL AND LINE SET
PREPARATION
Remove piping panel for easier access to service valves.
Cut ends of the refrigerant lines square (free from nicks or
dents) and debur the ends. The pipe must remain round. Do
not crimp end of the line.
CUT AND DEBUR
SERVICE VALVE
CONNECTION
COPPER TUBE
STUB
REDUCER
REFRIGERANT LINE
DO NOT CRIMP SERVICE
VALVE CONNECTOR WHEN
PIPE IS SMALLER THAN
CONNECTION
3
ATTACH THE MANIFOLD GAUGE SET FOR BRAZING
LIQUID AND SUCTION LINE SERVICE VALVES
Connect gauge set low pressure side to liquid
A
line service valve (service port).
Connect gauge set center port to bottle of
B
nitrogen with regulator.
Remove the valve core from the suction line to
C
provide an exit point for the nitrogen flow.
SUCTION SERVICE PORT MUST BE OPEN AND
SERVICE PORT CORE REMOVED TO ALLOW
EXIT POINT FOR NITROGEN FLOW
INDOOR
LINE SET SIZE MATCHES
SERVICE VALVE CONNECTION
LINE SET SIZE IS SMALLER
THAN CONNECTION
C
SUCTION LINE
UNIT
LIQUID LINE SERVICE
LIQUID LINE
Figure 9. Brazing Procedures
2

CAP AND CORE REMOVAL

Remove service cap and core from both the suction and
liquid line service ports.
SUCTION LINE SERVICE
VALVE
LOW
ATTACH
GAUGES
B
SUCTION LINE
SERVICE VALVE
OUTDOOR
A
VALVE
Page 17
SERVICE PORT CAP
SERVICE
PORT CORE
LIQUID LINE SERVICE VALVE
SERVICE
PORT CORE
SERVICE
PORT CAP
HIGH
UNIT
NITROGEN
XP25