Carrier 48/50A020-060 installation instructions Contents, General, Safety Considerations

48/50A020-060 48/50Z030-105 Single-Package Rooftop Units

Accessory Return Smoke Detectors

Installation Instructions

Part No. CRSMKDET002C00

CONTENTS

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

Check Package Contents. . . . . . . . . . . . . . . . . . . . . . . . . 2

Return Air Smoke Detector Installation. . . . . . . . . . . 2

48/50A Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

48/50Z Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Configuring the ComfortLink™ Controller. . . . . . . . 5

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Cleaning Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Filter Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Board Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .5,6

Smoke Entry Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

•AIRFLOW TEST

•SMOKE RESPONSE TEST

Standby, Alarm and Sensitivity Tests. . . . . . . . . . . . . 6

•STANDBY AND TROUBLE TEST

•ALARM TEST

•SENSITIVITY TEST

GENERAL

An HVAC (heating, ventilation and air-conditioning) sys- tem supplies conditioned air to virtually every area of a building. Smoke introduced into this air duct system will be distributed throughout the entire building. Smoke detectors designed for use inside the unit are used to sense the presence of smoke passing through the unit.

The smoke detector utilizes photoelectric technology for the detection of smoke. This detection method, when combined with an efficient ducting design, samples air passing through the unit. If sufficient smoke is sensed, an alarm signal is initiat- ed and the ComfortLink controls will shut down the unit. With the unit shut down, the unit will not blow toxic smoke and fire gases throughout the areas served by the duct system.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical compo- nents. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service per- sonnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves. Use care when handling and installing the accessory.

Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.

The National Fire Protection Association has established that DUCT DETECTORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN AREA DETECTOR PRO- TECTION as a means of providing life safety. Nor are they a substitute for early warning in a building’s regular fire detection system. Carrier supports this position and strongly recommends that the user read NFPA Standards 90A, 72, and 101. This smoke detector is listed per UL 268A.

This device will not operate without electrical power. Fire situations may cause an interruption of power. The system safeguards should be discussed with your local fire protection specialist.

This device will not sense smoke unless the ventilation sys- tem is operating and the cover is installed.

For this detector to function properly, it MUST be installed according to the instructions in this manual. Furthermore, the detector MUST be operated within ALL electrical and environmental specifications listed in this manual. Failure to comply with these requirements may prevent the detec- tor from activating when smoke is present in the air duct.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book	1	1	PC 111	Catalog No. 534-80157	Printed in U.S.A.	Form 48/50A-5SI	Pg 1	9-03	Replaces: New
Tab	1a	1b