Cap And Core Removal - Lennox SL18XC1 Installation Instructions Manual

STEP 5 -- REFRIGERANT PIPING -- Brazing Procedures
1
PIPING PANEL REMOVAL / PREPARING LINE SET
Remove piping panel to access 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 the 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
A Connect gauge set low pressure side to liquid line service valve (service port).
B Connect gauge set center port to bottle of nitrogen with regulator.
C With valve core removed from the suction line service port, nitrogen flow will have an exit point.
SUCTION LINE SERVICE PORT MUST BE OPEN
AND SERVICE PORT CORE REMOVED TO
ALLOW EXIT POINT FOR NITROGEN FLOW
INDOOR
UNIT
LINE SET SIZE MATCHES
SERVICE VALVE CONNECTION
LINE SET SIZE IS SMALLER
THAN CONNECTION
C
SUCTION LINE
LIQUID LINE SERVICE
LIQUID LINE
2

CAP AND CORE REMOVAL

Remove service cap and core from both the suction
and liquid line service ports.
SUCTION LINE
SERVICE VALVE
LOW HIGH
ATTACH
GAUGES
B
SUCTION
LINE
SERVICE
VALVE
OUTDOOR
UNIT
A
VALVE
FIGURE 12
Page 9
SERVICE PORT CAP
SERVICE PORT
CORE
LIQUID LINE SERVICE VALVE
SERVICE PORT
CORE
SERVICE
PORT CAP
NITROGEN
SL18XC1 SERIES