Installation guide

A/C Typical
THERMOSTAT FURNACE
24VAOHOTE]------O
24VACCOM
HEATSTAGE1....--E]
COOLSTAGEIFq ....--12>
,NDOORFAN
AIR
CONDITIONER
#JC
THERMOSTAT
24 VAC HOT E_
24 VAC COM E_
HEAT STAGE 1
COOL STAGE 1 D
INDOOR FAN [_
Typical
FAN COIL
Fig. 5--Generic Wiring Diagrams
(See Thermostat Installation Instructions for specific unit combinations.)
LEGEND
24-V FACTORY WIRING
24-V FIELD WIRING
FIELD SPLICE CONNECTION
(_ CONTACTOR
AIR
CONDITIONER
J
m
A02326
EXAMPLE:
25 ft - 15 ft i0 ft X 0.6 ozift 6 oz of additional charge
COOLING ONLY PROCEDURE The following procedure is
valid when indoor airflow is within ± 21 percent of its rated CFM.
i. Operate unit a nlininmm of i0 minutes before checking
charge.
2. Measure suction pressure by attaching an accurate gage to
suction valve service port.
3. Measure suction temperature by attaching an accurate ther-
mistor type or electronic thermometer to suction line at service
valve.
4. Measure outdoor air &y-bulb temperature with thermometer.
5. Measure indoor air (entering indoor coil) wet-bulb tempera-
rare with a sling psychrometer.
6. Refer to Table 3. Find outdoor temperature and evaporator
entering air wet-bulb temperature. At this intersection, note
superheat.
7. Refer to Table 4. Find superheat temperature located in item 6
and suction pressure. At this intersection, note suction line
temperature.
8. If unit has a higher suction line temperature than charted
temperature, add refrigerant until charted temperature is
reached.
A97368
9. If unit has a lower suction line temperature than charted
temperature, reclaim refrigerant until charted temperature is
reached.
10. If outdoor air temperature or pressure at suction valve
changes, charge to new suction line temperature indicated on
chart.
Step 12--Final Checks
IMPORTANT: Before leaving job, be sure to do the following:
i. Securely fasten all panels and covers.
2. Tighten service valve stem caps to 1i12-tum past finger tight.
3. Leave User's Manual with owner. Explain system operation
and periodic maintenance requirements outlined in mmmal.
4. Fill out Dealer Installation Checklist and place in customer
file.
CARE AND MAINTENANCE
For continuing high performance and to minimize possible equip-
ment _ailure, periodic maintenance must be perlbrmed on this
equipment.
Frequency of maintenance may vary depending on geographic
areas, such as coastal applications, which may require more
frequent maintenance.