wheelock CA-312-1 INSTALLATION INSTRUCTIONS

273 Branchport Ave.
Long Branch, N.J. 07740 Thank you for using our products.
[phone] INSTALLATION INSTRUCTIONS
www.wheelockinc.com COMMON AUDIBLE CONTROL UNIT

Use this product according to this instruction manual. Please keep this instruction manual for future reference.

MODEL: CA-312-1

APPLICATION INFORMATION:

Wheelock Inc. manufactures high quality telephone products. The installation of this product must conform to the following
instructions. IF ANY WORDS OR LETTERS APPEAR ON THE PRODUCT INDICATING A PARTICULAR USE, THE
PRODUCT MUST BE USED ONLY IN THE MANNER SO INDICATED. THE INSTALLATION OF THIS EQUIPMENT
SHOULD ONLY BE UNDERTAKEN BY QUALIFIED PERSONNEL. FIELD ADJUSTMENT, REPAIR OR MODIFICATION
OF THESE SIGNALS SHOULD NOT BE ATTEMPTED. Malfunctioning units should be returned for factory repair or replacement
in accordance with Wheelock Inc.'s published terms and conditions. Contact Wheelock Inc., 273 Branchport Ave., Long Branch, NJ,

07740.

NOTE: All CAUTIONS and WARNINGS are identified by the symbol

. All warnings are printed in bold capital letters.

FCC REGULATIONS:

- This equipment complies with Part 68 of the FCC Rules. The label affixed to this product contains, among other information,
the FCC Registration Number and the Ringer Equivalence Number (REN) for this product. This information must be provided
to the telephone company if requested.

- The REN is used to determine the quantity of devices which you may connect to your telephone line and still have all of those
devices ring when your telephone number is called. In most, but not all areas, the sum of the REN's of all devices connected to
one line should not exceed five (5.0). To be certain of the number of devices that you may connect to your line, contact your
local telephone company.

- This equipment should not be used on coin telephone lines. Connection to party line service is subject to state tariffs.

- If trouble is experienced, disconnect this equipment from the telephone line to determine if it is causing the malfunction. If the
equipment is determined to be malfunctioning, its use shall be discontinued until the problem has been corrected.

- Should the equipment cause harm to the telephone network, the telephone company shall, if possible, notify the customer that
temporary discontinuance of service may be required; however, where prior written notice is not possible, the telephone
company may temporarily discontinue service without notice, if such action is necessary under the circumstances. The
telephone company may make changes in its communication facilities, equipment and operations procedures, where such action
is reasonably required in the operation of its business and is not inconsistent with the rules and regulations of the Federal
Communications Commission.

DOC REGULATIONS:

NOTICE: The Canadian Department of Communications label identifies certified equipment. This certification means that the

equipment meets certain telecommunications network protective operational and safety requirements. The Department does not
guarantee the equipment will operate to the user's satisfaction.

- Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local
telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases,
the company's inside wiring associated with a single line individual service may be extended by means of a certified connector
assembly (telephone extension cord). The customer should be aware that compliance with the above conditions may not prevent
degradation of service in some situations.

- Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications
company cause to request the user to disconnect the equipment.

- Make sure that the electrical ground connections of the power utility, telephone lines and internal metallic water pipe system, if
present, are connected together.

CAUTION: The installation of this equipment should only be undertaken by qualified personnel.

- The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to a telephone
loop which is used by the device, to prevent overloading. The termination on a loop may consist of any combination of devices
subject only to the requirement that the total of the Load Numbers of all the devices does not exceed 100.

Load Number for CA-312-1 = 17

Copyright 2001 Wheelock, Inc. All rights reserved.

P81535 J

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GENERAL INFORMATION:

The CA-312-1 Common Audible Control Unit can monitor up to three telephone lines to provide "all call" signaling. To monitor
additional input lines use a CA-622-1 (P81534). These interface products are especially useful for new electronic key systems that do
not offer a common audible ring circuit for night bell connection or zoned ringing. A choice of two outputs for connection of alert
signals is provided: standard ringing voltage output or dry contact closure. A wide selection of audible and visual alert signals is
available to operate directly off the ringing voltage output. Alternatively, Wheelock's Dry Contact Interface (Model DCI-24-24) can
be connected to the optional contact closure output to drive multiple 24VDC alert signals.

SPECIFICATIONS:

Signal Input Quantity From 1 to 6 Incoming C.O. Lines
Signal Input Voltage 55-130VAC
Signal Input Frequency 20-30Hz
Signal Output 90/20 Incoming Signal
Contact Output A Dry Contact rated at 2 Amps, @

24VDC
Expansion Units are gangable
Ringer Equivalence 1.0 A
Signaling Zones 1
Dimensions 7-1/4" X 5" X 2"

INSTALLATION INFORMATION:

The CA-312-1 Common Audible Control Unit is designed for mounting on or near the key telephone system. Locate the control as
desired. Remove the top cover and mount the bottom using the mounting screws and holes provided. See Figure 1. Connect from 1
to 3 incoming C.O. Lines to the Input Terminals T1 through T3 and R1 through R3. Connect earth ground to Input Terminal. When
using 90V/20Hz output place "Zone A" switch in "90/20Hz" position; connect 90/20Hz signal to "90/20" output on output terminals 2
and 3. When using a dry contact output place "Zone A" switch in "Dry Contact symbol" position; Connect Wheelock's DCI-24-24 or
EPS-2401 Power Supplies with Wheelock's 24VDC Alert Signals.

Before closing the box of the control unit have someone call each of the connected C.O. lines to be sure they are triggering the
appropriate signals.

CAUTION: For proper installation check ground connection and proper tip/ring orientation when hooking up the unit.

REMOVABLE
COVER

INPUT
LINES

LATCH

INPUT
TERMINALS

OUTPUT
LINES

MOUNTING
HOLES

OUTPUT
TERMINALS

SCREWDRIVER

OUTPUT
SELECTION
SWITCH

Figure 1. Figure 2.

CAUTION: For proper installation check ground connections and proper tip/ring orientation when hooking up the unit.

P81535 J

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