Carrier 48-50PG20-28, 48-50HG014-028 User Manual

48/50HG014---028, 48/50PG20---28 Single---Package Rooftop Units with COMFORTLinkt and Electro ---Mechanical Controls Return and Supply Smoke Detector s Acces s ory

Installation Instructions

PART NO. CRSM KDET001D00, CRSMKSUP001B00, CRSMKSEN001A00

TABLE OF CONTENTS

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

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

INSTALLATION 2...................................

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

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

Supply Air Smoke Detector Installation 5...............

Sensor Installation 7...............................

Configuring the ComfortLinkt Controller 8............

OPERATION 8......................................

MAINTENANCE 9...................................

Cleaning Procedure 9..............................

Recommended Service Schedule 9....................

Sensor Tests 9....................................

Controller T ests 9..................................

TROUBLESHOOTING 10.............................

Dirty LED 10....................................

Power LED 10....................................

Trouble LED 10..................................

IMPORTANT: There are two different design revision 48/50HG units that have been produced. Because of these differences, there are two different versions of this accessory. This accessory literature covers accessories manufactured for units with design revision 1. This revision designator is found in the 13th digit of the unit model number located on the units’ rating plate. Design revision 0 units are not covered in this accessory book. To determine the design revision, refer to the full unit model number. See Fig. 1 for an example of an HG model number. The design revision number in the model number nomenclature is located in position 13.

DESIGN REVISION NUMBER

Position No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Example: 4 8 H G D 0 1 6 A A C 6 1 1 A A

C07172

Fig. 1 --- Model Number Chart

GENERAL

An HVAC (heating, ventilation and air-conditioning) system 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 initiated 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.

The return air smoke detector is part number CRSMKDET001D00, which includes a Smoke Sensor and a Smoke Control Module combined with sampling tube, harnesses and hardware. The supply air smoke detector is part number CRSMKSUP001B00, which includes a Smoke Sensor and a Smoke Control Module combined with sampling tube, harnesses and hardware. Part number CRSMKSEN001A00 is a Smoke Sensor only for use as a second (Supply with existing Return, or Return with existing Supply) Air Smoke Detector with sampling tube, harnesses and hardware.

The Control Module can be attached to a Smoke Sensor and installed as an assembled unit, or it can be installed separate from a sensor. One Controller can be used to control up to two detectors (Smoke Sensors).

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. 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 personnel. 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.

Recognize safety information. This is the safety--alert symbol

. When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. W ARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

FIRE HAZARD

Failure to follow this warning could cause personal injury and/or equipment damage.

This device will not sense smoke unless the ventilation system is operating and the cover is installed.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

Disconnect all power to the unit before performing maintenance or service. Install Lock Out tags on disconnects or breakers.

CRSMK

FIRE HAZARD

Failure to follow this warning could cause personal injury and/or death.

The National Fire Protection Association has established that DUCT DETECTORS MUST NOT BE USED AS A SUBSTITUTE FOR OPEN AREA DETECTOR PROTECTION 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.

ELECTRICAL SHOCK AND FIRE HAZARD

Failure to follow this warning could cause personal injury.

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.

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury and/or equipment damage.

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

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage.

When installing the smoke detector in the unit, follow all local codes.

Check Package Contents

Remove accessory packaging and inspect shipment for damage. If any damage is found, file a claim with the shipping agent immediately. If any item is missing or any part does not assemble properly, notify the Carrier distributor.

Table 1 lists the accessory package contents. Fig. 2 shows the smoke detector.

Return Air Smoke Detector Installation (CRSMKDET001D00)

The return air smoke detector is to be installed in the predrilled holes located above compressor B1/A2 in the electrical/compressor section. (See Fig. 3.)

WARNING

INSTALLATION

CAUTION

UNIT

48/50HG014-028,

48/50PG20-28

Table 1—Accessory Package Contents — Return Air Smoke Detector (CRSMKDET001D00),

Supply Air Smoke Detector (CRSMKSUP001B00), Sensor (CRSMKSEN001A00)

RETURN SMOKE DETECTOR

CRSMKDET001D00

Description Part Number Quantity Description Part N umb er Quantity Description Part Numbe r Quantity

Sensor/Controller/

Harness/Tube

Screw AL56AU168 2 Screw AL56AU168 5 Screw AL56AU168 1 Screw AL48AM397 2 Sensor Module HK50ZT001 1 Screw AL48AM397 2

Bracket 50TG501113 1 Tube RN20ZT008 1 Bracket 50TG501113 1

Large Bushing HY93NH085 1 Cable Assy RM91ZT015 1 Large Bushing HY93NH085 1

Sampling Tube RN20ZT060 1 Plug — 1 Sampling Tube RN20ZT060 1

Plug — 1 Rubber Gasket — 2 Plug — 1

Rubber Gasket — 2 Sampling Tube Collar — 1 Rubber Gasket — 2

Sampling Tube Collar — 1 Snap-in Wire T ie HY76TB110 2 Sampling Tube Collar — 1

Wire Tie HY76TB125 1 Wi re Tie HY76TB125 2 Tub e RN20ZT008 1

Bushing HY93NH069 1 Bushing HY93NH069 1 Cable Assy RM91ZT015 1 Harness Assy 50TG403507 1 Harness Assy 50TG403507 1 Snap-in Wire T ie HY76TB110 5 Exhaust Tube — 1 Exhaust Tube — 1 Wire Tie HY76TB125 1

HK61ZT001 1

SUPPLY SMOKE DETECTOR

CRSMKSUP001B00

Controller/

RJ-45 Harness

HK28ZT001 1 Sensor Module HK50ZT001 1

ADDITIONAL SENSOR

CRSMKSEN001A00

Cable Assy RM91ZT001 1

Exhaust Tube — 1

Plug

Sampling tube

Exhaust tube

Rubber gasket

Sensor housing and electronics

Conduit nuts

( field supplied )

Collar

Rubber gasket

Smoke Sensor

PLUG LOCATION

Cover gasket

(ordering option)

Sensor cover

LEDs

Power Dirty Trouble Alarm

Controller housing

and electro nics

Conduit cou plings

( field supplied )

Fig. 2 --- Smoke Detector

Fastener

(2X)

Smoke Control Module

Conduit sup port plate

Terminal block cover

Cover gasket

(ordering option)

SMOKE CONTROL MODULE

RETURN SMOKE SENSOR

Controll er cover

LEDs Alarm

Trouble

Power

C07173

CRSMK

Fig. 3 --- Return Air Smoke Detector Location

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury and/or death.

Prior to installation of this accessory, make sure all power is disconnected to the unit and locked out and tagged.

NOTE: For horizontal applications it is easiest to install the smoke detector prior to making duct connections.

1. Open the hinged electrical/compressor access door and secure.

2. Find the 2 plugs located above compressor B1/A2, remove and discard. Cut holes in the insulation located behind the partition.

A1B1/A2C1/B1

C07174

3. Remove cover from smoke detector. The screws will remain captured in the cover.

4. Slide exhaust tube into the sensor. The exhaust tube should be inserted from the back of the sensor, into the hole with four slots, and locked into place. (See Fig. 2.)

5. Slide smoke detector into holes in partition with the terminal block to the right. Do not secure at this time.

6. Slide the sampling tube collar over the sampling tube until the tabs lock into the tube. (See Fig. 2.)

7. Slide long sampling tube (P/N RN20ZT060) into left-hand hole of smoke detector. It might be necessary to tilt the smoke detector upwards in order to properly align the sampling tube, making sure that the sampling holes point DOWN. (See Fig. 4.)

8. Install plug into far end of sampling tube.

9. Remove the unit side panel at the return end of the unit. Save screws for use later.

+ 7 hidden pages