Aire-Flo 47 Інструкція з монтажу Посібник з монтажу - Сторінка 6
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STEP 2 -- REFRIGERANT PIPING -- Brazing Procedures
1
CUT AND DEBUR
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
3
ATTACH THE MANIFOLD GAUGE SET FOR BRAZING LIQUID AND SUCTION LINE SERVICE VALVES
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
line service port valve.
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 line
service port to allow nitrogen to escape.
SUCTION SERVICE PORT MUST BE OPEN TO
ALLOW EXIT POINT FOR NITROGEN
INDOOR
UNIT
CAUTION
Brazing alloys and flux contain materials which are
hazardous to your health.
Avoid breathing vapors or fumes from brazing
operations. Perform operations only in well-ventilated
areas.
Wear gloves and protective goggles or face shield to
protect against burns.
Wash hands with soap and water after handling brazing
alloys and flux.
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.
SERVICE PORT
ANGLE-TYPE SERVICE
DO NOT CRIMP SERVICE VALVE
CONNECTOR WHEN PIPE IS
SMALLER THAN CONNECTION
LOW
ATTACH
GAUGES
B
SUCTION
LINE
SERVICE
VALVE
OUTDOOR
UNIT
A
WHEN BRAZING LINE SET TO
VALVE
SERVICE VALVES, POINT FLAME
AWAY FROM SERVICE VALVE.
FIGURE 7
Page 6
CAP
SERVICE
PORT
CORE
BALL-TYPE SERVICE
VALVE
USE REGULATOR TO FLOW
HIGH
NITROGEN AT 1 TO 2 PSIG.
NITROGEN
WARNING
Danger of fire. Bleeding the refrigerant
charge from only the high side may result
in pressurization of the low side shell and
suction tubing. Application of a brazing
torch to a pressurized system may result
in ignition of the refrigerant and oil
mixture. Check the high and low
pressures before applying heat.
SERVICE
PORT
CORE
SERVICE
PORT CAP
VALVE