Lenox Heat Pump 50677201 User Manual download pdf (Page 13)

Page 13

XP14 SERIES

ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND SUCTION / VAPOR LINE SERVICE

VALVES

OUTDOOR

UNIT

LIQUID LINE

VAPOR LINE

LIQUID LINE SERVICE

VALVE

SUCTION /

VAPOR LINE

SERVICE

VALVE

ATTACH

GAUGES

INDOOR

UNIT

SUCTION / VAPOR SERVICE PORT MUST BE

OPEN TO ALLOW EXIT POINT FOR NITROGEN

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 Remove core from valve in suction / vapor line service port to allow nitrogen to escape.

NITROGEN

HIGH

LOW

USE REGULATOR TO FLOW

NITROGEN AT 1 TO 2 PSIG.

WHEN BRAZING LINE SET TO

SERVICE VALVES, POINT FLAME

AWAY FROM SERVICE VALVE.

Flow regulated nitrogen (at 1 to 2 psig) through the low−side refrigeration gauge set into the liquid line service port valve, and out of the suction /

vapor line service port valve.

CUT AND DEBUR

CAP AND CORE REMOVAL

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.

Remove service cap and core from both the suction / vapor and

liquid line service ports.

CUT AND DEBUR

LINE SET SIZE MATCHES

SERVICE VALVE CONNECTION

COPPER TUBE

STUB

SERVICE VALVE

CONNECTION

REFRIGERANT LINE

DO NOT CRIMP SERVICE VALVE

CONNECTOR WHEN PIPE IS

SMALLER THAN CONNECTION

REDUCER

LINE SET SIZE IS SMALLER

THAN CONNECTION

SERVICE

PORT

CORE

SERVICE PORT

CAP

SERVICE

PORT

CORE

SUCTION / VAPOR LINE

SERVICE VALVE (BALL−TYPE

FOR −060 AND ANGLE−TYPE

FOR ALL OTHER SIZES)

Figure 9. Brazing Procedures

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 31 32

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Lenox Heat Pump 50677201 User Manual Page 13

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