Daikin DAR0904, DAR1204 Installation Manual
DAR SERIES
COMMERCIAL AIR HANDLERS
ATTENTION INSTALLING PERSONNEL:
Prior to installation, thoroughly familiarize yourself with this
Installation Manual. Observe all safety warnings. During
installation or repair, caution is to be observed.
It is your responsibility to install the product safely and to
educate the customer on its safe use.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION.
IMPORTANT NOTE:
DAR models are suitable for Upflow and Horizontal
Installations only. Do not use for Downflow Installations.
INSTALLATION INSTRUCTIONS
Index
Important Safety Instructions ..............................................2
Product Identification..........................................................3
Product Description.............................................................3
Unit Inspection .................................................................... 3
Codes & Regulations............................................................3
Replacement Parts...............................................................3
Pre-Installation Instructions.................................................3
Location...............................................................................4
Ductwork.............................................................................4
Supply Ductwork and Flanges............................................4
Return Ductwork...............................................................4
Return Air Filters ...............................................................4
Electric Heat ........................................................................4
Electrical Supply Wire and MOP...........................................5
Building Electrical Service Inspection .................................5
Wire Sizing ........................................................................6
Maximum Overcurrent Protection (MOP) ..........................6
Conversion 0f 460 Electrical Power Supply .........................7
Electrical Connections.......................................................... 7
Supply Voltage.............................................................. 7
Air Handler Only (Non-Heat Kit Models) .......................7
Heater Kit Models .........................................................7
Low Voltage Connections..............................................8
Heat Kit Installation ............................................................. 8
Refrigerant Lines.................................................................. 8
Tubing Preparation ...........................................................9
Post Brazing......................................................................9
Piping Size.........................................................................9
Evaporator Coil TXV ...........................................................10
Airflow............................................................................... 10
Belt Tension .......................................................................10
Regular Maintenance.........................................................11
Wiring Diagram.................................................................. 12
IOD-4010
6/2013
Our continuing commitment to quality products may mean a change in specifications without notice.
© 2013
5151 San Felipe St., Suite 500, Houston, TX 77056
www.daikincomfort.com
Important Safety Instructions
The following symbols and labels are used throughout this manual
to indicate immediate or potential safety hazards. It is the owner’s
and installer’s responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure
to heed safety information increases the risk of personal injury,
property damage, and/or product damage.
When installing or servicing this equipment, safety
clothing, including hand and eye protection, is
strong ly reco m m end ed . If in st all in g in an ar ea that ha s
special safety requirements (hard hats, etc.), obser ve
these requirements.
HIGH VOLT AGE!
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property dama ge ,
personal in jury or de ath.
Installation and repair of t his unit should b e perform ed
by individuals me eting (at a mi nimum) th e
ONLY
require men ts of a n “en try l evel techn ician ” as sp ec ified
by the Air-Condition ing, Heating and R efrigeration
Institute (AHRI). Attempting to install or repair this unit
without such b ackgroun d may res ult in produc t
damage, persona l injury or death.
This product is factory-shipped for use with 208230/3/60 electrical power supply. However, the
airhandler can be reconfigured to operate with a
460/3/60 power supply, provided the conversion noted
in section “Conversion to 460 Electrical Supply”
section of this manual is performed.
To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
uninterrupted, unbroken
electrical ground. The
electrical ground circuit may consist of an
appropriatel y sized electrical wire connecting the
ground lug in the unit control box to the building
electrical service panel.
Other meth ods of gro unding ar e p ermi tte d i f pe rfo rmed
in accordance with the National Electric Code
(NEC) /Amer ican National Stan dards I nsti tute
(ANSI)/ Nati onal Fire P rotec tion A ssocia tion (NFP A) 70
and local /s ta te c ode s. I n Canada, e le ctr ica l gro undi ng
is to be in accordance wit h t he Cana di an E lec tr ic C ode
(CSA) C22.1.
Do not connect to or use any device that is not designcertified by Daikin for use with this unit. Serious
property damage, personal injury, reduced unit
performance and/or hazardous conditions may result
from the use of such non-approved devices.
T o prevent th e ri sk o f property damage, pe rsonal
injury , or dea th, do not store co mb ustible mater ials or
use gasoline or other flammable liquids or vapo rs in
the vicin ity of this unit.
CARBON MONOXIDE POISONING HAZARD
Special Warning for Installation of Furnace or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas
Carbon monoxide producing devices (such as an automo bi le, sp ace
heater, gas water heater, etc. ) should no t be operated in enclo sed a reas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, ther e must be ade quate , direct out side
ventilation.
This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.
CO can cause serious illness including permanent brain damage or death.
B10259-216
-
This airhandler is designed for Upflow or HorizontalLeft applications. DO NOT INSTALL IN THE
DOWNFLOW OR HORIZONTAL-RIGHT ORIENTATION.
2
Product Identification
DAR Nominal Cooling Capacity
Unit Inspection
Upon delivery, the unit is to be inspected for damage. Any damage must be reported immediately to the carrier. Do not install
this equipment if it is determined that the integrity or safety has
been compromised by freight damage.
Mode l Series
DAR
0904 - 90 ,000 Btu h ( 7 1/2 Tons )
1 204 - 120,000 Btu h ( 10 Tons)
Product Description
When matched with DX11 and DZ11 condensers, this system complies with the minimum efficiency requirements found in ASHRAE
90.1-2007. See the Daikin DX11 and DZ11 specification sheets for
details on these condensers. For other Daikin condenser(s) that
can be matched with this airhandler to obtain ASHRAE 90.1-2007
compliance, consult with your local distributor.
The DAR series is intended for use with a room thermostat. This
thermostat is not supplied with this equipment. Only thermostats
that use 24 VAC control circuitry are to be used.
DAR0904 DAR1204
Ne t Weight (Lbs.) 375 400
Shipping Weight (Lbs.) 405 430
Refrigerant R-410A R-410A
Blower Wheel (Dia x Width) 11X10 11X10
Blower Wheel Quantity 2 2
Motor Type Belt Drive Belt Drive
Motor Qty 1 1
Motor (HP) 1 1/2 2
Motor (RPM) 1750 1750
Motor Sheave Type
Motor Sheave Diameter (in) 1.9" - 2.9" 2.8" - 3.8"
Blower Wheel Pulley Type
Blower Wheel Pulley Dia (in) 5.9 5.9
Evaporator Co il Material
2
Face Area (Ft
Nu mber of Rows 4 4
Suction Line Quantity 1 2
Suction Line Connection (in) * 1 1/8 1 1/8
Liquid Line Quantity 1 2
Liquid Line Connection (in)* 5/8 3/8
Metering Device
TXV Type
TXV Quantity 1 2
*Note: Consult with the condenser specifications for suction and liquid
li ne si zi ng.
)
Adjustable Variable Pitch
Fixed Diameter
Copper Tubes / Al Fins
8.9 10.0
Thermal Expansion Valve (TXV)
Non-adjustable (factory installed)
Using the table “Model Identification” section check the equipment model number to ensure the unit is appropriately sized for
the condenser unit(s).
If an incorrect unit is supplied it must not be installed and it is to
be returned to the supplier. The manufacturer assumes no responsibility for the installation of incorrect delivered units.
The evaporator coil contains a high-pressure inert gas holding
charge.
Codes & Regulations
This product is designed and manufactured to comply with national codes. Installation in accordance with such codes and/or
prevailing local codes/regulations is the responsibility of the installer. The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations.
The United States Environmental Protection Agency (EPA) has
issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these regulations may
harm the environment and can lead to the imposition of substantial fines. Should you have any questions please contact the
local office of the EPA.
Replacement Parts
When reporting shortages or damages, or ordering repair parts,
give the complete product model and serial numbers as stamped
on the product. Replacement parts for this product are available
through your contractor or local distributor. For the location of
your nearest distributor consult the white business pages, the
yellow page section of the local telephone book or contact:
CONSUMER AFFAIRS
DAIKIN NORTH AMERICA LLC
7401 SECURITY WAY
HOUSTON, TEXAS 77040
855-770-5678
If replacing an air handler, the system must be manufacturer approved and Air-Conditioning, Heating, and Refrigeration Institute
(AHRI) matched. NOTE: Installation of unmatched systems is
strongly discouraged.
Pre-Installation Instructions
Carefully read all instructions for the installation prior to installing product. Make sure each step or procedure is understood and
any special considerations are taken into account before starting
installation. Assemble all tools, hardware and supplies needed
to complete the installation. Some items may need to be purchased locally. Make sure everything needed to install the product is on hand before starting.
3
Location
NOTE: Airhandlers are designed for indoor installation only.
When installing this airhandler in an enclosed area, such as a garage/parking area, as with any carbon monoxide producing device (i.e. and automobile, space heater, water heater, etc.), insure
that the area is properly ventilated.
The DAR airhandler is suitable for installation in multiple locations
including:
* Overhead (attic/mezzanine, etc.)
* Closet/mechanical room
When installing this airhandler, consideration is to be given to minimize the length of refrigerant tubing. Also, do not install the
airhandler in a location either above or below the condenser that
violates the instructions provided with the condenser.
The clearance from a combustible surface to the unit may be 0".
However, service clearance is to take precedence. In addition allow a minimum of 36" in front of the unit for service clearance.
Allow sufficient clearance to remove the heater elements for service or replacement in heat kits when utilized in application.
When installing in an area directly over a finished ceiling (such as
an attic), an emergency drain pan is required directly under the
unit. See local and state codes for additional requirements.
When installing this unit in an area that may become wet, elevate
the unit with a study, non-porous material.
In installations that may lead to physical damage (warehouse, industrial sites, etc.), it is advised to install a protective barrier to
prevent such damage.
Return Ductwork
DO NOT TERMINATE THE RETURN DUCTWORK IN AN AREA THAT
CAN INTRODUCE TOXIC, OR OBJECTIONABLE FUMES/ODORS INTO
THE DUCTWORK. The return ductwork is to be introduced into
the air handler bottom (upflow configuration). The cabinet dimensions are 48” x 24”.
Return Air Filters
Each installation must include a return air filter. This unit is factory equipped with disposable return air filters. To ensure optimum performance, frequent filter replacement is advised. See
the following table for the factory installed filter sizes.
Model Filte r Siz e (in) Qt y .
DAR0904 16 x 20 x 2 4
DAR1204
16 x 20 x 2 2
20 x 20 x 2 2
Ductwork
This DAR air handler is designed for a complete supply and return
ductwork system.
Do not operate this product without all the ductwork
attached.
To ensure correct system performance, the ductwork is to be sized
to accommodate 375-425 CFM per ton of cooling with the static
pressure not to exceed .5" WC. Inadequate duct work that restricts
airflow can result in improper performance and compressor or
heater failure. Ductwork is to be constructed in a manner that
limits restrictions and maintains suitable air velocity. Ductwork is
to be sealed to the unit in a manner that will prevent leakage.
Supply Ductwork and Flanges
The supply ductwork flanges are shipped loose and required
to be field installed. See the following sketch for further
details: Dimensions are approximately 40" x 13-1/8".
Electric Heat
Refer to this manual in combination with the instructions provided
with the heat kit for the correct installation procedure.
The electrical characteristics of the airhandler, the electric heat
kit, and the building power supply must agree.
The air handlers listed in this manual do not have factory installed
electric heat. Electric heat is available as an accessory. If installing this option, the ONLY heat kits that can be used are the AHKD
series.
AHKD MODEL
NUMBER
AHKD15-3 15 208-230/3/60 1
AHKD15-4 15 460/3/60 1
AHKD20-3 20 208-230/3/60 2
AHKD20-4 20 460/3/60 2
AHKD30-3 30 208-230/3/60 2
AHKD30-4 30 460/3/60 2
For all supply voltages, use the correction factors in the following
tables, multiplied by KW and (or) temperature rise to have corrected results.
NOMINAL
KW
ELECTRICAL
CHARACTERISTICS
STAGES
4
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