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Daikin DRC Installation Instructions Manual
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Daikin DRC Installation Instructions Manual

Light commercial rooftop units
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Horizontal Economizer (3-12.5 Ton)
Models DRC/DRG/DRH/DBC/DBG/DBH
LIght Commercial Rooftop Units
Installation Instructions
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know
the product better than the customer. This includes all
safety precautions and related items.
Prior to actual installation, thoroughly familiarize yourself
with this instruction manual. Pay special attention to all
safety warnings. Ofter during installation or repair it is
possible to place yourself in a position which is more
hazardous than when the unit is in operation.
Remember, it is your responsibility to install the product
safely and to know it well enough to be able to instruct a
customer in its safe use. Safety is a matter of common
sense...a matter of thinking before acting. Most dealers
have a list of specific good safety practices... follow them.
The precautions listed in this installation manual are
intended as supplemental to existing practices.
However, if there is a direct conflict between existing
practices and the content of this manual, the precautions
listed here take precedence.
This product is designed and manufactured to permit
installation in accordance with national codes. It is the
installer's responsibility to install this unit in accordance
with national codes and prevailing local codes and
regulations.
GENERAL INFORMATION
This installation and operating manual covers field installed
horizontal economizers for Daikin commercial package
models. These economizers are available with dry bulb or
enthalpy sensors and are offered on 3 - 12.5 ton models.
Economizers are for ultra low leak applications. This
economizer kit must be used with a two stage thermostat.
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.
All 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 or accessory, and other safety
precautions that may apply.
© 2019 - 2020
P/N: IOD-7049B
Follow all safety codes. Wear safety glasses and work
gloves.
Only personnel that have been trained to install, adjust,
service or repair(hereinafter, "service") the equipment
specified in this manual should service the equipment.
The manufacturer will not be responsible for any injury
or property damage arising from improper service or
service procedures. If you service this unit, you assume
responsibility for any injury or property damage which
may result. In addition, in jurisdictions that require one
or more licenses to service the equipment specified in
this manual, only licensed personnel should servise the
equipment.
Improper installation, adjustment, servicing or repair of
the equipment specified in this manual, or attempting to
install, adjust, service or repair the equipment specified in
this manual without proper training may result in product
damage, property damage, personal injury or death.
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
High Voltage!
Disconnect all power before servicing or
installing this unit. Multiple power sources may
be present. Failure to do so may cause property
damage, personal injury or death.
1
19001 Kermier Rd., Waller, TX 77484
www.daikincomfort.com
Date: July 2020
WARNING
WARNING
WARNING
0140M00517-A

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Summary of Contents for Daikin DRC

  • Page 1 Disconnect all power before servicing or This installation and operating manual covers field installed installing this unit. Multiple power sources may horizontal economizers for Daikin commercial package be present. Failure to do so may cause property models. These economizers are available with dry bulb or damage, personal injury or death.
  • Page 2 ECONOMIZER GENERAL INFORMATION ECONOMIZER INSTALLATION Economizers are used to let free-cooling into the building The 7.5 - 12.5 ton models have additional components when the outdoor air is cool enough and therefore mounted onto the horizontal return air panel and in the eliminating the need to turn on your compressors for return air duct.
  • Page 3 7. Apply gasket from the hardware bag to the mating flanges of pre-assembled economizer hood. Then fasten the hood to the economizer cover panel using provided screws. (See Figure 3) Figure 5 - Actuator and Controller Location To install the 7.5 - 12.5 ton horizontal economizer, perform the following procedure: 1.
  • Page 4 Figure 9 - Barometric Relief Hood 11. Leave the filter access panel above the outside air damper hood off at this point to access the controller Figure 7 - Medium Damper Assemblies and actuator. Controller and actuator are mounted directly to outside air damper assembly (see Figure 6.
  • Page 5 Figure 13 - Indoor Fan Section / Mixed Air Sensor 3-6 Ton 4. Some DBG units may not have a factory installed mixed air temperature harness in the blower compartment. In this case, install the mixed air temperature sensor in the return air compartment Figure 11 - Remove Economizer Jumper Plug (see Figure 14 for mounting location).
  • Page 6 Figure 15 5. Program the W7220 controller to the needs of your specific application. Table 6 below details the Menu structure of the controller. 6. Reinstall the unit’s flter access panel above economizer. ECONOMIZER WIRING INSTRUCTIONS FOR 7.5-12.5 TON UNITS: Figure 16 1.

  • Page 7: Interface Overview

    5. Program the W7220 controller to the needs of your specific application. Table 6 below details the Menu structure of the controller. 6. Reinstall the unit’s filter access panel above economizer. horizontal Economizer static pressure drop values: See the tables below for static pressure drop values when the horizontal economizer kit is installed.

  • Page 8: Dry Bulb Sensor

    Menu Structure NOTE: A second C7250 sensor is provided in the parts kit to be used as the mixed air sensor, and is field Table 6 illustrates the complete hierarchy of menus and parameters for the JADE Economizer system. installed (see economizer wiring diagrams pages 15 and 16).
  • Page 9 OPTIONAL ENTHALPY SENSOR DIFFERENTIAL RETURN SENSORS The economizer comes standard with a (C7250) dry bulb Differential return sensors are to be mounted in the return outside air sensor. A field installed (C7400S) enthalpy air duct. The C7400S sensor can be used for differential sensor kit is available to control the free-cooling change- return dry bulb or enthalpy.
  • Page 10 TABLE 6. MENU STRUCTURE PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE and NOTES VALUE INCREMENT YES = economizing available; the system can use ECON AVAIL YES/NO Outdoor Air for free cooling when required. ECONOMIZING YES/NO YES = Outdoor Air being used for 1st stage cooling. YES = OCC signal received from space thermostat or OCCUPIED YES/NO...
  • Page 11 TABLE 6. MENU STRUCTURE (cont.) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE and NOTES VALUE INCREMENT ACT POS 0 to 100% Displays actual position of actuator. Displays number of times actuator has cycled. One ACT COUNT 1 to 65,535 cycle equals the sum of 180° of movement in any direction. OK/Alarm ACTUATOR Displays Error if voltage or torque is below actuator range...
  • Page 12 TABLE 6. MENU STRUCTURE (cont.) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE and NOTES VALUE INCREMENT VENTILATION MINIMUM POSITION at LOW SPEED. MIN POS L 3.2 V 2 to 10 vdc Displays ONLY if used on 2 speed units and CO2 sensor is not used.
  • Page 13 TABLE 6. MENU STRUCTURE (cont.) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE and NOTES VALUE INCREMENT Display order = MM/DD/YY INSTALL 01/01/10 Setting order = DD, MM, then YY. UNITS DEG ºF ºF or ºC Sets economizer controller in degrees Fahrenheit or Celsius. EQUIPMENT CONV CONV HP...
  • Page 14 TABLE 6. MENU STRUCTURE (cont.) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE and NOTES VALUE INCREMENT SD DMPR POS CLO or OPEN Function NOT AVAILABLE with 2-speed mode. Turns on the DCV automatic control of the dampers. MANUAL or DCVCAL ENA AUTO Resets ventilation.
  • Page 15 TABLE 6. MENU STRUCTURE (cont.) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE and NOTES VALUE INCREMENT DAMPER CLOSE Positions damper to the fully closed position. CONNECT Y1-O Closes the Y1-O relay (Y1-O). CONNECT Y2-O Closes the Y2-O relay (Y2-O). Energizes the AUX1-O output. If AUX1-O setting is: •...
  • Page 16 Wiring Diagrams - 3-6 Ton Wiring Diagram Wiring is subject to change. Always refer to the unit wiring diagram and accessory wiring diagram booklet for the most up-to-date wiring.
  • Page 17 Wiring Diagrams - 7.5-12.5 Ton Wiring Diagram Wiring is subject to change. Always refer to the unit wiring diagram and accessory wiring diagram booklet for the most up-to-date wiring.
  • Page 18 THIS PAGE IS INTENTIONALLY LEFT BLANK...
  • Page 19 THIS PAGE IS INTENTIONALLY LEFT BLANK...
  • Page 20 CUSTOMER FEEDBACK Daikin is very interested in all product comments. Please fill out the feedback form on the following link: https://daikincomfort.com/contact-us You can also scan the QR code on the right to be directed to the feedback page. NOTE: SPECIFICATIONS AND PERFORMANCE DATA LISTED HEREIN ARE SUBJECT TO CHANGE WITHOUT NOTICE.

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