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CRCBDIOX001B00

Installation, Start--Up and

Service Instructions

48/50PD05–06, 48/50HG014–028,

48/50PG03 ---28, 48/50PM16---28

Sensor Accessory

Single Package Rooftop Units

with COMFORTLink™ Controls

TABLE OF CONTENTS

PACKAGE CONTENTS 1..............................

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

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

INSTALLATION 3....................................

START--UP 5.........................................

SERVICE 5..........................................

TROUBLESHOOTING 5...............................

IMPORTANT: Read and become familiar with all instructions

before beginning installation of CO

sensor accessory.

IMPORTANT: There are two different design revision 48/50HG

units currently being 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. 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

PACKAGE CONTENTS

PART NU MBER DESCRIPTION QUANTITY

HH99ZZ009 CO

Sensor 1

HH99ZZ015 Enclosure 1

AL56AU166 S c r e w --- N o . 8 x 1 / 2 --- i n . 4

50TG403323

Unit Wiring Harness

(48/50HG014---028,

48/50PG20---28,

48/50PM16---28)

48HG400595

Unit Wiring Harness

(48/50PG03---16,

48/50PD05---06)

50TG403368 Sensor Wiring Harness 1

HY93NH069 Snap Bushing 2

HY76TB110 Wire Tie 2

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 ser-

vice air--conditioning equipment.

When working on 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.

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

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

als, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAU-

TION. These words are used with the safety--alert symbol. DAN-

GER identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies a hazard which

could result in personal injury or death. CAUTION is used to iden-

tify unsafe practices which may result in minor personal injury or

product and property damage. NOTE is used to highlight sugges-

tions which will result in enhanced installation, reliability, or opera-

tion.

ELECTRICAL SHOCK, FIRE AND EXPLOSION

HAZARD

Failure to follow this warning could result in personal injury,

death or property damage.

Before performing service or maintenance operation on unit,

turn off main power switch to unit. Shut off gas supply before

shutting off main power. Tag gas shut off and power

disconnect switch with a suitable warning label.

WARNING

GENERAL

The CO

Sensor (Fig. 2) is designed to monitor carbon dioxide

(CO

) levels in the return air and interface with the ComfortLinkt

controller on the rooftop air-conditioning unit. The sensor

perceives CO

levels in the 0 to 2,000 parts per million (ppm)

range and provides outputs indicating this level.

Manufacturer reserves the right to change, at any ti me, specifications and designs without notice and without obligations.

Catalog No:IIK---CRCBDI01---02

R e p l a c e s : I I K --- C R C B D I 0 1 --- 0 1

1 2 3 4 5 6

Résumé du contenu

Page 1 - Service Instructions

CRCBDIOX001B00Installation, Start--Up andService Instructions48/50PD05–06, 48/50HG014–028,48/50PG03 ---28, 48/50PM16---28CO2Sensor AccessorySingle Pac

Page 2 - Check Package Contents

2FRONT VIEWSIDE VIEWMOUNTING PLATEC09547Fig. 2 -- CO2SensorThe unit utilizes a 4 to 20-mA analog signal. The ComfortLinktcontroller uses this signal t

Page 3 - INSTALLATION

32 1/16”1” TYP1 3/16”1 1/8”13/16”1 3/16”TOP4 5/16”2.00”1 3/16”5/16”1 3/16”3 9/16”5 9/16”7 1/8”5 7/16”5 7/16”1 3/16”4 11/16”1/4” DIA4 HOLES7 1/8”1” TYP

Page 4 - CO SENSOR

4BLUBRNRED7BLK218J7341652J8PL18REDBLKNRBULBCO SENSOR 2CO2SENSORC09550Fig. 5 -- Wiring DiagramORIENT SAMPLING TUBE SO THAT THE HOLES POINT DOWN. C095

Page 5 - CRCBDIOX

5START-UPAfter applying power, the CO2sensor will enter a warm-up mode,indicated by the word ‘‘HEAT’’ in green on the display. Warm-upduration will be

Page 6

6Table 2 – IAQ ConfigurationsITEM EXPANSION DESCRIPTION DEFAULTIA.CF IAQ Analog Input Configura-tionControl method to be used for analog input.0: No I