IM 934-2 Applied PDAA/PDHA / Page 19 of 44
optional automatic fresh air damper, the damper is
factory set to open whenever the fan motor is
running and closed when it is off.
17. Set the indoor fan mode for off cycle on the PC
board for the off cycle selection of 10, 20, 30
minutes or 1 hour off cycle time. The fan will
operate for 2 minutes and shut down for the
selected off cycle period. For continuous fan
operation, the fan mode selection on the touchpad
or remote thermostat must be set to continuous or
on. When the room thermostat is in the cycle or
auto mode, it will cycle the indoor fan when there
is a call for heating or cooling. See page 33 & 34
for jumper placement details.
18. Set the temperature limiting feature to the desired
range of thermostat operations. As shipped, the
range is 60°F to 85°F.
19. Replace the air filter and front panel.
20. For hydronic units:
a. Route the two low voltage valve wires, with
Molex connection, through the opening
provided in the subbase and connect to valve.
b. Connect short power cord from the chassis to
the receptacle in the subbase heat section.
c. Relocate thermostat bulb to bracket located in
the subbase. Refer to IM 936 which is
provided with the hydronic subbase.
d. Replace filter and louvered subbase front
panel.
21. When installing the chassis in older wall
sleeves, it may be necessary to bend the sheet
metal flange at the rear of the wall sleeve rails to
allow full insertion of the chassis.
Figure 28. Chassis Installation
Tinnerman Clips
Damper & Damper Actuator
Wall Sleeve Rails
(See Note 21 Above)
Wall Sleeve
6. If wall sleeve has been previously installed,
remove temporary cardboard weather panel.
7 If louver has been previously installed, remove
temporary cardboard weather panel.
8 Place Tinnerman clips on wall sleeve. Clips and
mounting screws enclosed in a bag attached to the
inside chassis side panel (Figure 28).
9. Rotate fans to be sure they are free of obstruction.
10. Check all fasteners to make certain they did not
loosen during shipment. Do not loosen nuts
holding down compressor; they are factory
installed.
11. Do not lubricate motors before start-up. Motors
are permanently lubricated by the manufacturer.
12. Check all copper tubing and capillaries for proper
clearance so they will not hit or rub during
operation.
13. Slide chassis into wall sleeve until firmly seated
against weather seals. Make sure tubing does not
catch when inserting chassis.
CAUTION
Do not push on the coil surface, control box cover or fan
scroll.
14. Secure the chassis in the wall sleeve with four (4)
screws packaged with the Tinnerman clips
(Figure 28).
15. Plug electrical cord into receptacle. Excess cord
for 208V and 230V units should be coiled neatly
and stored in the conditioner. Attach plug/cord
cover to front face of subbase on 265V.
16. Set the manual damper operator in open or closed
position as desired. On units equipped with the
Screws (4)
Chassis
Left end view
