PS Engineering
PAC24 Series Audio Selector Panel and Intercom System
Installation and Operator’s Manual
200-240-0010 Page 2-1 Rev. 25, Feb. 2015
Section II - Installation
2.1 GENERAL INFORMATION
2.1.1 SCOPE
This section provides detailed installation and interconnect instructions for the PS Engineering PAC24-
Series Audio Control Panel/Intercom System.
Please read this manual carefully before beginning any installation to prevent damage and post-installation
problems. Installation of this equipment requires special tools and knowledge.
NOTE: The PAC24 requires specialized knowledge and tools for an effective installation. An appropriate-
ly rated Certified Aircraft Repair Station must install this equipment in accordance with applicable regula-
tions. PS Engineering, Incorporated warranty is not valid unless the equipment is installed by an authorized
PS Engineering, Incorporated dealer. Failure to follow any of the installation instructions, or installation by
a non-certified individual or agency will void the warranty, and may result in an unairworthy installation.
2.2 Unpacking and Preliminary Inspection
Use care when unpacking the equipment. Inspect the units and parts supplied for visible signs of shipping
damage. Examine the unit for loose or broken buttons, bent knobs, etc. Verify the correct quantity of co m-
ponents supplied with the list in Section 1.6 (B). If any claim is to be made, save the shipping material and
contact the freight carrier. Do NOT return units damaged in shipping to PS Engineering. If the unit or ac-
cessories shows any sign of external shipping damage, contact PS Engineering to arrange for a replace-
ment. Under no circumstances attempt to install a damaged unit in an aircraft. Equipment returned to PS
Engineering for any other reason should be shipped in the original PS Engineering packaging, or other UPS
approved packaging.
2.3 Equipment Installation Procedures
2.3.1 Cooling Requirements
Forced air cooling of the PAC24 is not required. However the unit should be kept away from heat produc-
ing sources (i.e. defrost or heater ducts, dropping resistors, heat producing avionics) without adequate cool-
ing air provided. Outside, ram air cooling of the unit is not permitted, and may result in damage.
2.3.2 Internal DIP Switch Configuration
The PAC24 can be easily configured for many different applications. This includes dual audio panel instal-
lations.
The tables below describe the various internal switch selections. There are two sections, the first explains
what each switch does, the second is a list of specific configurations. For more information, consult PAC24
Configuration Quick Reference Guide, document number 200-240-0310.
In a single installation, with no options, no action is required. In dual installations, place the DIP switches
into the proper position to configure the PAC24 as the pilot, or copilot panel. By designating a pilot or co-
pilot panel, the aircraft commander, or pilot, will have priority for transmissions and intercom mode selec-
tion.
Note:
Bold=Default settings (as shipped from factory)
Units are shipped as single unit configuration, 28V lighting.
PAC24 units MUST be reconfigured before any other configuration is used.
To access the DIP switches, remove the top cover by removing the two (2) screws at the sides holding the
cover in place.
(8 pages)
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