R e s i d e n t i a l Tr a n q u i l i t y
®
2 7 S p l i t ( T T S ) - 6 0 H z H F C - 4 1 0 A
R e v. : 8 M a y, 2 0 1 4 C
c l i m a t e m a s t e r. c o m
17
Refrigeration Installation
°
3/4” Diameter suction lines: 1/4 lb. per foot of line set +
1 lb. per ton for indoor coil.
°
7/8” diameter suction lines: 1/3 lb. per foot of line set +
1 lb. per ton for indoor coil
°
1-1/8” diameter suction lines: 1/2 lb. per foot of line set
+ 1 lb. per ton for indoor coil.
Example: 3-ton system with 40 ft. long line set and 3/4”
suction line.
Line set: 1/4 lb./ft. x 40 ft. = 10 lb.
Indoor coil: 1 lb./ton x 3 tons = 3 lbs. (not required if coil
is removed and lines are connected together)
Total: 10 lbs. + 3 lbs. = 13 lbs. to adequately
fl
ush line
set and indoor coil.
The Flushing Procedure
1. Remove the existing R-22 refrigerant by selecting the
appropriate procedure stated below.
If the unit is not operational, follow steps A-E.
• A.) First, disconnect all power supply to the existing
compressor section.
• B.) Connect a clean refrigerant recovery cylinder and
the refrigerant recovery machine to the existing unit
according to the instructions provided with the recovery
machine.
• C.) Remove all R-22 refrigerant from the existing system.
• D.) Check the gauges after shutdown to con
fi
rm all
refrigerant has been completely removed from the entire
system.
• E.) Disconnect the liquid and vapor lines from the
existing compressor section.
If the unit is operational, follow steps F- L.
• F.) First, start the existing R-22 system in the cooling
mode and close the liquid line valve.
• G.) Completely pump all existing R-22 refrigerant into
the compressor section. It will be necessary to bypass
the low pressure switch if the unit is so equipped to
ensure that the refrigerant is completely evacuated.)
• H.) The low side system pressures will eventually reach 0
psig. When this happens, close the vapor line valve and
immediately shut the compressor section o
ff
.
• I.) Check the gauges after shutdown to con
fi
rm that the
valves are not allowing refrigerant to leak back into the
low side of the system.
• J.) Disconnect power to the indoor furnace or air-
handler to kill low voltage to the compressor section.
• K.) Disconnect the power supply wiring from the
existing compressor section.
• L.) Unsweat the liquid and vapor lines from the existing
compressor section.
2. Remove the existing compressor section.
3. Set the new HFC-410A unit in place and braze the liquid
and vapor lines to the unit connections. Connect the low
voltage and line voltage to the new compressor section.
Do not turn on power supply to the unit and do not open
the compressor section service valves at this time.
4. The indoor coil can be left in place for the
fl
ushing process
or removed.
5. If the indoor coil is removed, the suction and liquid line
must be connected together on the indoor coil end. See
illustration for recommended method for connecting these
together.
Содержание Tranquility 27
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