Carrier 48/50P030-100 specifications Contents, Safety Considerations, General

48/50A020-060, 48/50P030-100, 48/50Z030-105 CO2 Sensor Accessory

Installation Start-Up and

Service Instructions

Part No. CRCBDIOX002A00

CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Check Package Contents. . . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2,3 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Configuring the ComfortLink™ Controller. . . . . . . . 4 Verification and Calibration . . . . . . . . . . . . . . . . . . . . . . 4 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY CONSIDERATIONS

Installing, starting up and servicing HVAC (heating, ventila- tion, and air conditioning) equipment can be hazardous due to system pressures, electrical components and equipment locations.

Only trained, qualified installers and service technicians should install, start up and service this equipment.

When working on HVAC equipment, observe precautions in the literature, labels attached to the equipment and any other safety precautions that apply. Follow all safety codes. Wear safety glasses and work gloves. Use care when handling and installing the sensor.

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. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or property damage.

WARNING

Prior to installation of this accessory, make sure all power is disconnected to the unit and locked out. Failure to dis- connect power supply prior to servicing may result in seri- ous injury.

GENERAL

The CO2 sensor (Fig. 1) is designed to monitor carbon dioxide (CO2) levels in the return air and interface with the ComfortLink™ controller on the rooftop air-conditioning unit. The sensor perceives CO2 levels in the 0 to 2,000 parts per million (ppm) range and provides outputs indicating this level.

The unit utilizes a 4 to 20-mA analog signal. The ComfortLink controller uses this signal to control the economizer damper position and ensure adequate level of outside air in the building. This is one of several approved methods of control- ling the indoor-air quality (IAQ) in a building and meets the requirements of local building codes and ASHRAE (American Society of Heating, Refrigerating and Air Conditioning Engineers) Standard 62. The control sensor features a mem- brane-covered waveguide and sample chamber that produces stable, reliable, and highly accurate carbon dioxide readings.

The sensor is self-calibrating and should not need to be manually calibrated.

Check Package Contents — Remove accessory pack- aging 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 your Carrier distributor. Table 1 lists the accessory package contents.

Table 1 — Accessory Package Contents

ITEM	QUANTITY
CO2 Sensor (Part No. HH99ZZ019)	1
Bracket (48/50A)	1
No. 8-18 x 1/4 Screw	2
1/4 AB-14 x 5/8 Screw	2
Electrical Harness*	1
Bracket (48/50P,48/50Z)	1

*Do not use the electrical harness provided in this kit for 48/50P and 48/50Z units.

FRONT VIEW SIDE VIEW MOUNTING PLATE

Fig. 1 — CO2 Sensor

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

Catalog No. 04-53480064-01 Printed in U.S.A. Form 48/50-73SI Pg 1 8-09 Replaces: 48/50A-4SI