Unitary Ducted Split AC
21
CAUTION
ENVIRONMENTAL HAZARD
Failure to follow this caution may result in environmental damage.
Federal regulations require that you do not vent refrigerant to the atmosphere. Recover during
system repair or final unit disposal.
Follow these steps to properly start up system:
1. After system is evacuated, fully open liquid and vapor service valves.
2. Unit is shipped with valve stem(s) closed and caps installed. Replace stem caps after system
is opened to refrigerant flow (back seated). Replace caps finger—tight and tighten with wrench an
additional 1/12 turn.
3. Close electrical disconnects to energize system.
4. Set room thermostat at desired temperature. Be sure set point is below indoor ambient
temperature.
5. Set room thermostat to HEAT or COOL and fan control to ON or AUTO mode, as desired.
Operate unit for 15 minutes. Check system refrigerant charge.
5.3.9 Final Checks
IMPORTANT:
Before leaving job, be sure to do the following:
1. Ensure that all wiring is routed away from tubing and sheet metal edges to prevent rub--
through or wire pinching.
Unitary Ducted Split AC – 15.
2. Ensure that all wiring and tubing is secure in unit before adding panels and covers. Securely
fasten all panels and covers.
3. Tighten service valve stem caps to 1/12--turn past finger tight.
4. Leave Users Manual with owner. Explain system operation and periodic maintenance
requirements outlined in manual.
5. Fill out Dealer Installation Checklist and place in customer file.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible equipment failure, periodic
maintenance must be performed on this equipment. Frequency of maintenance may vary
depending upon geographic areas, such as coastal applications.
