Carrier CRECOMZR077A00, Installation Instructions Manual

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53480208-01 Printed in U.S.A. Form IIK-CRECOMZR77-03 Pg 1 11-18 Replaces: NEW
Installation Instructions
P/Ns CRECOMZR077A00, CRECOMZR079A00,CRECOMZR081A00
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
ACCESSORIES LIST . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTRUCTIONS FOR 48/50LC
07-12 UNITS ONLY . . . . . . . . . . . . . . . . . . . . . . 11
Installing Optional HH57AC081 Single Outside Air
Enthalpy Sensor . . . . . . . . . . . . . . . . . . . . . . . . 14
Installing Differential Return Air Sensor . . . . . . . 15
California’s Title 24 High Temperature Limit
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Demand Controlled Ventilation (DCV) . . . . . . . . . 15
Remote (Downstairs) Monitoring of Controller’s
Fault Detection and Diagnostics . . . . . . . . . . . 16
GENERAL JADE W7220 CONTROLLER AND
SENSOR INFORMATION . . . . . . . . . . . . . . . . . 17
W7220 Economizer . . . . . . . . . . . . . . . . . . . . . . . . 17
User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Using the Keypad with Menus . . . . . . . . . . . . . . . 17
Using the Keypad with Settings and Parameters 17
Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Programming the Jade W2770 Controller . . . . . . 17
• SETPOINTS
• SYSTEM SETUP
Checkout Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SETUP AND CONFIGURATION . . . . . . . . . . . . . . 23
W7220 Economizer Module Wiring . . . . . . . . . . . 23
Time-out and Screen Saver . . . . . . . . . . . . . . . . . 24
START-UP AND OPERATION . . . . . . . . . . . . . . . . 24
Cooling with EconoMi$er X . . . . . . . . . . . . . . . . . 24
Heating with EconoMi$er X . . . . . . . . . . . . . . . . . 24
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . 25
Power Loss (Outage or Brownout) . . . . . . . . . . . 25
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
• CLEARING ALARMS
SAFETY CONSIDERATIONS
Installation of this accessory can be hazardous due to system
pressures, electrical components and equipment, and equip-
ment locations (such as a roof or elevated surface). Only
trained qualified installers and service technicians should in-
stall, start-up, and service this equipment.
When installing this accessory, observe precautions in the litera-
ture and on any labels attached to the equipment and all other safe-
ty precautions may apply.
• Follow all safety codes
• Wear safety glasses and work gloves
• Use care in handling and installing the accessory
It is important to recognize safety information. This is the safety-
alert symbol . When you see this symbol on the unit and in in-
structions or manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAU-
TION, and NOTE. 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 signi-
fies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may re-
sult in minor personal injury or product and property damage.
NOTE is used to highlight suggestions which
will result in en-
hanced installation, reliability, or operation.
GENERAL
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could cause personal injury
or death. Before performing service or maintenance opera-
tions on the unit, always turn off main power switch to unit
and install lock(s) and lockout tag(s). Unit may have more
than one power switch. Ensure electrical service to rooftop
unit agrees with voltage and amperage listed on the unit rat-
ing plate.
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care
and wear appropriate protective clothing, safety glasses and
gloves when handling parts and servicing roof top units.
CAUTION
Failure to follow this caution may result in personal injury
and damage to the unit. Cover the duct opening as a precau-
tion so objects cannot fall into the return duct opening. Be
sure to remove the cover when installation is complete.
IMPORTANT: These economizers meet all the economizer
requirements as laid out in California’s Title 24 mandatory
section 120.2 (fault detection and diagnostics).
Small Rooftop Products
Select 3 to 12 ½ Tons
(48/50LC 14 Not Included)
Horizontal EconoMi$er X Accessory