wheelock CH-AT2, CH-BT2, CH-BT4 INSTALLATION INSTRUCTIONS

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Long Branch, N.J. 07740
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INSTALLATION INSTRUCTIONS

ELECTRONIC TELCHIMES

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

MODELS: CH-AT2, CH-BT2, CH-BT4

APPLICATION INFORMATION:

TelChimes provide a pleasant chime signal as an alternative to standard telephone bell ringers and electronic warblers. They are
designed for use with telephone communications systems, and are available in a variety of operating voltages from 18 to 60 Volts
AC/DC (CH-BT4 available in DC only). Refer to specifications section for rated input voltage of each TelChime model.

All TelChimes produce a single chime sound during each cycle of interrupted ringing voltage. The CH-BT2 and CH- BT4 can also be
operated in the vibrating mode. All models include both volume and tone adjustments, and feature low current draw to minimize line
loading.

Model CH-AT2 is recommended for use in indoor areas up to 1000 square feet. Models CH-BT2 and CH-BT4 are recommended for
larger areas up to 5000 square feet and for noisy locations.

NOTE: All CAUTIONS and WARNINGS are identified by the symbol

. All warnings are printed in bold capital letters.

WARNING: READ THESE INSTRUCTIONS CAREFULLY. FAILURE TO COMPLY WITH ANY OF THE
FOLLOWING INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT IN IMPROPER APPLICATION,
INSTALLATION AND/OR OPERATION OF THESE PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD
RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

SPECIFICATIONS:

Table 1.

Model Number CH-AT2 CH-BT2 CH-BT4
Peak dBA At 1 Meter 80dBA 90dBA 90dBA
Input Voltage 18-30VAC/DC 18-30VAC/DC 38-60DC
Input Current .020A .020A .010A
Minimum Ring Cycle On Time 0.25 Second
Chime Frequency Adjustable Range 750-1200Hz
Input Termination 6 Position Modular Jack Through Pin 2 (Black) & Pin 5 (Yellow)

------ Terminal

MOUNTING INFORMATION:

The CH-AT2, CH-BT2 and CH-BT4 are designed for mounting to interior structures such as walls, partitions or posts. To mount the
CH-AT2, space the 2 mounting screws (provided) vertically on 2.00" centers (see Figure 1). To mount the CH-BT2 and CH-BT4,
space the 2 mounting screws (provided) horizontally on 2.75" centers (see Figure 2). Hang the chime securely by means of the
keyholes on the back of each unit. For hollow walls or thin panels, use appropriate dry wall fasteners.

CAUTION: These devices are not intended for use in hazardous locations as defined by the National Electrical Code (NEC) and
by the National Fire Protection Association (NFPA). Contact Wheelock Inc. for information on explosion-proof devices designed for
hazardous locations.

Copyright 1986, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 Wheelock, Inc. All rights reserved.

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Figure 1: CH-AT2 Mounting Template Figure 2: CH-BT2 & CH-BT4 Mounting Template

NOTE: Mounting Templates not to scale.

WIRING INFORMATION:

1. Modular connection for models CH-AT2, CH-BT2 and CH-BT4:
Connect TelChimes to the telephone system with a standard modular line cord (not provided). The cord is typically 7 feet in

length with a modular plug to mate with an RJ-11C jack in the USA or a CA-11 jack in Canada. Refer to Figure 3 for CH-AT2
connection and adjustments. Refer to Figures 4 and 5 for CH-BT2 and CH-BT4 connection and adjustments.

2. Hard wire connection for models CH-BT2 and CH-BT4 only:
Remove the top cover by pushing the latch at the bottom of the housing base with a small screwdriver, refer to Figure 4.

Disconnect the speaker wires by unplugging them from the PC Board pins P1 (red) and P2 (black).

Route the black and yellow wires from the telephone system through the opening in the phone jack. Then connect the black and

yellow wires to the terminals TB1 marked + and - see Figure 6. Note the polarity is not sensitive.
Reconnect the speaker wires to pins marked P1 (red) and P2 (black).
Snap cover back onto base. Be sure that the base sides line up between the cover sides and the 4 fingers in the cover sides, see

Figure 7.

3. When the CH-BT2, and CH-BT4 are connected to an interrupted operating voltage, leave the jumper setting on SS (single stroke).

When connected to a continuous operating voltage, change the jumper setting to VIB (vibrating); see Figure 8.

4. After completing the installation, test by having someone ring your telephone to make sure the signal functions properly.

NOTES:

1. The Electronic TelChimes do not eliminate existing ringers. Such ringers can be disconnected when TelChimes are installed.

2. The TelChimes are not polarity sensitive.

3. All TelChimes are shipped with controls preset as follows:
(A) Volume control at maximum.
(B) Tone control at 960Hz for "A" Chime, 830Hz for "B" Chime.

Settings (A) and (B) are selected to achieve peak sound output (dBA at 1 meter). Volume and tone controls may be readjusted
as required. Note that changes in factory setting of either or both controls will reduce sound output.

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