Armstrong Air BCS2 Series Instrukcja instalacji - Strona 8
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connection must be run, full size, to a location outside
the closet.
Verify Orifice Size
NOTE: Some models are equipped with Thermal expansion
valve and do not require any orifice change.
Thermal expansion valve
For factory installed thermal expansion valves you must, attach
sending bulb to suction line with strap. Bulb should be positioned
no further than 1 foot from header connection and situated at the
10 or 2 o'clock position. Secure tightly and cover with cork or
foam insulation.
IMPORTANT: The proper orifice size is dependent on indoor
coil/outdoor unit combination and application.
identification of the piston orifice size is located on a
small white strip located on the liquid line inside the air
handler.
1.
Consult the outdoor unit information to determine
whether the indoor unit has the correct orifice installed.
2.
If a change of the orifice is required, loosen the brass
hex nut and separate the orifice extension stub from the
brass hex fitting.
A. Distributor fitting
B. Mounting flange
C. Piston orifice
3.
Remove the orifice with an orifice extractor tool.
4.
Insert the proper orifice into the fitting, seal end first.
Make sure the orifice is free to move in the fitting.
5.
Replace the brass hex nut.
NOTE: Over tightening (1/4 turn past snug) the brass
hex nut will crush the gasket and may result in a system
leak or stuck piston.
6.
Dispose of all packaging and unused parts.
The
D. Ring seal (supplied)
E. Orifice extension bulb
F. 0.812" brass hex nut
Connect Refrigerant Lines
Refrigerant lines must be connected by a licensed, EPA certified
refrigerant technician in accordance with established procedures.
IMPORTANT:
Connecting refrigerant lines must be clean, dehydrated,
•
refrigerant-grade copper lines. Air handler coils should
be installed only with specific line sizes for approved
system combinations.
Handle the refrigerant lines gently during installation
•
process. Sharp bends or possible kinking in the lines will
cause a restriction.
Do not remove the caps from the lines or system
•
connection points unit connections are ready to be
completed.
1.
Route the suction and liquid lines from the fittings on the
indoor coil to the fittings on the outdoor unit. Run the lines in
as direct a path as possible avoiding unnecessary turns and
bends.
2.
Make sure that the suction line is insulated over the entire
exposed length and that both suction and liquid lines are not
in direct contact with floors, walls, ductwork, floor joists, or
other piping.
3.
Connect the suction and liquid lines to the evaporator coil.
4.
To avoid damaging the rubber grommets in the cabinet while
brazing, slide the rubber grommets over the refrigerant lines
until they are away from the heat source.
5.
Braze with an alloy of silver or copper and phosphorus with a
melting point above 1,100
NOTE: Do not use soft solder.
6.
Reinstall the rubber grommets after brazing is finished.
7.
Make sure outdoor unit has been put in place according to
the Installation Instructions and is connected to the
refrigerant lines.
Make Electrical Connections – Models
Without Factory-Installed Electric Heat
240-Volt Installations
1.
Disconnect all power supplies.
2.
Remove the air handler access panel.
3.
Route the field supply wires to the air handler electrical
connection box.
4.
Using UL listed wire nuts, connect the field supply wires
to the air handler (black to black and yellow to yellow).
0
F.
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