950-0265revC - 13 - November 30, 2020
REFRIGERANT CHARGE
NOTE: Outdoor unit is
pre-charged
with enough R410A refrigerant for a line set up to 25 ft. long. For
longer line set lengths additional charge must be WEIGHED in per the following table.
Unit
Chart shows amount of additional refrigerant needed with different length line sets.
oz/ft
30ft
35 ft.
45 ft.
50 ft
60 ft.
70 ft.
80 ft.
90 ft
9H49YMI
0.161 oz
0.81 oz
1.61 oz
3.22 oz
4.03 oz
5.64 oz
7.25 oz
8.86 oz
/
12H49YMI
0.161 oz
0.81 oz
1.61 oz
3.22 oz
4.03 oz
5.64 oz
7.25 oz
8.86 oz
/
12H49ZMI
0.161 oz
0.81 oz
1.61 oz
3.22 oz
4.03 oz
5.64 oz
7.25 oz
8.86 oz
/
18H49ZMI
0.161 oz
0.81 oz
1.61 oz
3.22 oz
4.03 oz
5.64 oz
7.25 oz
8.86 oz
10.47 oz
24H47ZMI
0.322 oz
1.61 oz
3.22 oz
6.44 oz
8.05 oz
11.27 oz 14.49 oz 17.71 oz 20.93 oz
DO NOT EXCEED THE SPECIFIED MAXIMUM LINE LENGTH.
EXAMPLE: 30 ft. total length
– 25 ft. pre-charge = 5 ft. x 0.161 oz per ft. = 0.81 oz. additional refrigerant.
Calculate your additional charge here:
____ - ____ = ____ X ____ = ______
CAUTION:
Capacity is based on standard length and maximum
allowance length is base of reliability. Oil trap should
be installed per 17 - 23 feet.
The basic system installation is now complete; the unit is ready for start up.
UNIT START UP
The system can now be opened to allow the refrigerant charge in the outdoor unit to be released into the line
set. The service valves require a 5 mm Allen wrench to undo the valve stems. Remove brass caps from the
service valves.
Open the SUCTION line valve first to prevent any possibility of oil
clogged in the capillary tube
.
(This can occur if the liquid line valve is opened first with the rest of the system
in a deep vacuum)
LIQUID or GAS line can then be opened.
Check that both service valve stems are fully open and stop against the valve
body. Replace the brass caps and tighten them to prevent leaks.
Energize the breaker to power up the system.
Compressor has a 3 minute time delay on startup
.
