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Follow these steps to properly start up the system:
1. After system is evacuated, close the disconnects to energize
indoor unit, outdoor unit, and User Interface (UI). Do not
attempt to operate the system in heating or cooling mode at
this time. Mode: OFF.
2. Navigate to the service area by pressing MENU from main
screen. Scroll down to service icon and hold until icon
turns green. Once in the Installation and Service menu, se-
lect Refrigerant Charging, then select Charging Cooling.
Fig. 9 - - Service Icon
Fig. 10 - - Select Refrigerant Charging
Fig. 11 - - Select Charging Subcooling
3. If installed indoor unit is a furnace coil, model should have
been selected manually during the initial discovery process.
Press the text "line set" and "vapor line" to choose line set
length and vapor line diameter. After complete, press "next"
to advance to next screen. The "weigh in" value is the total
charge weight and includes refrigerant shipped in unit. If
"weigh in" text is selected the additional charge required is
broken down into the line set adder and indoor coil size
adder.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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Fig. 12 - - Select Line Set Length & Vapor Line Diameter
!
UNIT OPERATION HAZARD
Failure to follow this caution may result in improper unit
operation.
For new installations only. Add additional refrigerant due to
indoor coil, line set, and vapor line settings. Outdoor unit is
pre- -charged with weight of refrigerant shown on rating plate.
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4. Add additional required charge for line set and indoor coil
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size then fully open liquid and vapor service valves. If line-
set is less than 15 feet (4.57 m) in length, charge removal
may be necessary and will be shown as a negative number
on UI screen.
Coil & Lineset
Additional Charge
Required
Fig. 14 - - Additional Required Charge
9
CAUTION
Fig. 13 - - Weigh In Value
Factory Charge
Catalog No: II288B--- 03
Replaces: II288B--- 02
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