Friedrich PDXDAA User Manual

Model PDXDAA & PDXDEA  
Installation Instructions  
Lateral Duct Accessory Kit  
For Use with F Series Packaged Terminal Air Conditioner or Heat Pump  
Introduction:  
These instructions cover the installation of the Lateral Duct Accessory Kit for Packaged Terminal Air  
Conditioner (PTAC) units. Please read these instructions completely before attempting installation.  
Package Contents (See Fig 1):  
Figure 1- Components for Lateral Duct Accessory Kit  
ITEM  
QUANTITY  
Plenum  
1
1
Extension Duct  
Extension Duct Wall Trim Kit  
Wall Register  
1
1
End Cap  
1
Attachment Screws  
Right Support Bracket  
Left Support Bracket  
14  
1
1
Tools Required: Power drill, 1/8” drill bit, hacksaw, Phillips screwdriver and utility knife.  
General  
The Lateral Duct Accessory Kit allows one PTAC unit to heat or cool two rooms. The kit mounts to  
the wall sleeve and can be installed for either right or left side duct applications. The amount of air  
that can be diverted to an adjoining room is adjustable from 20 to 30 percent. (See Table 1)  
Table 1 – Airflow Adjustments  
BAFFLE POSITION  
Position 1 (factory default)  
Position 2  
UNIT FRONT  
80%  
ADJACENT ROOM  
20%  
25%  
30%  
75%  
Position 3  
70%  
Pre-Installation  
Consider the following before installing the Lateral Duct Accessory:  
Maximum duct extension length is 4 feet.  
Duct run must be straight and horizontal; no bends or turns.  
Minimum recommended clearance between unit and adjoining room wall is 6 inches.  
Provisions must be made for return air from the adjoining room.  
The PTAC unit does not have to be removed for lateral duct installation.  
PDXDAA & PDXDEA  
Friedrich Air Conditioning Co.  
Pg 1/5  
Post Office Box 1540 / San Antonio, Texas 78295-1540  
(210) 546-0500 / (800) 541-6645 / www.friedrich.com  
Model PDXDAA & PDXDEA  
Figure 7 – Side View Showing Measurements  
for Extension Opening  
7. Remove and discard discharge grille by  
removing attachment screws from inside of  
front panel. See Fig 6.  
Figure 6 – Back View of Front Panel  
13. The Extension Duct Wall Trim Kit can be used  
to trim out, up to approximately a 1/2 inch gap  
around the Extension Duct.  
8. Optional – for easy access to control panel,  
remove the control door by removing the hinges  
pins from inside of front panel that secure  
control door in place.  
14. Establish the needed length of the Extension  
Duct. Be sure to include the thickness of the  
wall in determining the proper length. One  
suggested method is to measure from the  
support bracket to outer wall surface in the  
adjacent room.  
9. Replace the front panel.  
Install Extension Duct  
(Use for Left or Right Applications)  
15. Cut the Extension Duct to length. Do not cut  
flanged end as this is inserted into the plenum.  
Only cut the non-flanged end of the Extension  
Duct. See Fig 8.  
10. Temporarily secure plenum to support brackets  
previously installed.  
Figure 8 – Extension Duct Attachment  
11. Establish the position where the extension  
should intersect the adjacent wall and mark this  
location.  
12. Measure and cut a 3 3/4 in. x 7 1/8 in. opening  
through the wall. See Fig. 7.  
PDXDAA & PDXDEA  
Friedrich Air Conditioning Co.  
Post Office Box 1540 / San Antonio, Texas 78295-1540  
(210) 546-0500 / (800) 541-6645 / www.friedrich.com  
Pg 3/5  
Model PDXDAA & PDXDEA  
NOTE: The final length of duct may be cut to up to  
½ in. short of outside of wall opening as the  
Wall Register inner flange will cover this ½ in.  
gap. This is to allow for flush mounting of the  
Wall Register to the wall.  
17. Mount extension duct by sliding extension duct  
into the wall opening (or previously installed  
wall trim kit mounted in the wall opening) and  
secure flanged end with 2 screws provided, to  
support bracket. See Fig 8 again.  
16. Trim the Extension Duct interior insulation back  
approximately 1 1/2 in. to allow installation of  
wall register. See Fig 9.  
Install Plenum to Unit  
IMPORTANT: Unit must be mounted in sleeve  
with front panel installed before attaching plenum.  
Figure 9 – Trimmed Insulation in Extension Duct  
18. Using two screws provided, install End Cap to  
Plenum on side opposite from where Extension  
Duct is attached.  
19. Line hole up with Extension Duct on one side  
and the support bracket on other side. Secure  
with 4 screws provided. See Fig. 10 for  
completed plenum assembly.  
NOTE: Be sure plenum is tightly sealed to the front  
panel.  
Figure 10 – Completed Assembly of Plenum and Extension  
PDXDAA & PDXDEA  
Friedrich Air Conditioning Co.  
Post Office Box 1540 / San Antonio, Texas 78295-1540  
(210) 546-0500 / (800) 541-6645 / www.friedrich.com  
Pg 4/5  
Model PDXDAA & PDXDEA  
22. Remove 2 screws holding baffle. See Fig 11.  
Figure 11 – Baffle Attachment Screw Locations  
Install Wall Register  
20. In adjacent room center the register on the duct  
end and push into the duct until the frame is  
tight to the wall.  
NOTE: The clips on the register are designed to  
hold it in place.  
Adjust Volume of Airflow Between Rooms  
NOTE: The plenum is factory set for maximum  
discharge of airflow from front of unit. To adjust  
the airflow between 2 rooms, adjust the internal  
baffle as follows:  
23. Position baffle, and secure for desired airflow  
setting. See Table 1.  
21. Remove plenum discharge grille.  
24. Replace plenum discharge grille.  
The Installation of the Lateral Duct Accessory Kit is now complete.  
Thank you for purchasing this Friedrich accessory.  
Please contact us if you have comments or questions.  
PDXDAA & PDXDEA  
Friedrich Air Conditioning Co.  
Pg 5/5  
Post Office Box 1540 / San Antonio, Texas 78295-1540  
(210) 546-0500 / (800) 541-6645 / www.friedrich.com  

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