Daikin DZ14 Installation Manual

ManualsBrandsDaikin Light Commercial ManualsCoolingDaikin DZ14 - 3.0 Ton - Commercial Heat Pump - 14 Nominal SEER - Single-Stage - R-410A Refrigerant - 460/3/60

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. Fail-

ure to heed safety information increases the risk of personal in-

jury, property damage, and/or product damage.

HIGH VOLTAGE!

Disconnect ALL power before servicing. Multiple

power sources may be present. Failure to do so may

cause property damage, personal injury or death.

ONLY individuals meeting the requirements (at a minimum)

of an “Entry Level Technician” as specified by the Air

Conditioning, Heating, and Refrigeration Institute (AHRI) may

use this information. Attempting to install or repair this unit

without such background may result in product damage,

personal injury, or death.

Scroll equipped units should never be used to evacuate the air

conditioning system. Vacuums this low can cause internal

electrical arcing resulting in a damaged or failed compressor.

CAUTION

Shipping Inspection

Always keep the unit upright; laying the unit on its side or top may

cause equipment damage. Shipping damage, and subsequent in-

vestigation is the responsibility of the carrier. Verify the model

number, specifications, electrical characteristics, and accesso-

ries are correct prior to installation. The distributor or manufac-

turer will not accept claims from dealers for transportation dam-

age or installation of incorrectly shipped units.

CONDENSING UNIT

HEAT PUMP

INSTALLATION & SERVICE REFERENCE

Codes & Regulations

This product is designed and manufactured to comply with na-

tional codes. Installation in accordance with such codes and/or

prevailing local codes/regulations is the responsibility of the in-

staller. The manufacturer assumes no responsibility for equip-

ment installed in violation of any codes or regulations. Rated

performance is achieved after 72 hours of operation. Rated per-

formance is delivered at the specified airflow. See outdoor unit

specification sheet for split system models or product specifica-

tion sheet for packaged and light commercial models. Specifica-

tion sheets can be found at www.daikincomfort.com for Daikin

brand products. Within the website, please select the residential

or commercial products menu and then select the submenu for

the type of product to be installed, such as air conditioners or

heat pumps, to access a list of product pages that each contain

links to that model’s specification sheet.

The United States Environmental Protection Agency (EPA) has is-

sued 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.

If replacing a condensing unit or air handler, the system must be

manufacturer approved and Air Conditioning, Heating and Refrig-

eration Institute (AHRI) matched. NOTE: Installation of unmatched

systems is not allowed.

Outdoor units are approved for operation above 55°F in cooling

mode. Operation below 55°F in cooling mode requires the use of

an approved low ambient kit.

Operating the unit in a structure that is not complete (either as

part of new construction or renovation) will void the warranty.

Installation Clearances

Special consideration must be given to location of the condensing

unit(s) in regard to structures, obstructions, other units, and any/

all other factors that may interfere with air circulation. Where

possible, the top of the unit should be completely unobstructed;

however, if vertical conditions require placement beneath an ob-

struction there should be a minimum of 60 inches between the

top of the unit and the obstruction(s). The specified dimensions

meet requirements for air circulation only. Consult all appropri-

ate regulatory codes prior to determining final clearances.

INSTALLATION INSTRUCTIONS

Our continuing commitment to quality products may mean a change in specifications without notice.

5151 San Felipe St., Suite 500, Houston, TX 77056

www.daikincomfort.com

IOD-4002A

9/2013

Summary of content (12 pages)

PAGE 1
INSTALLATION INSTRUCTIONS CONDENSING UNIT Codes & Regulations HEAT PUMP INSTALLATION & SERVICE REFERENCE 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.
PAGE 2
In more severe weather locations, it is recommended that the unit be elevated to allow unobstructed drainage and air flow. The following elevation minimums are recommended: Another important consideration in selecting a location for the unit(s) is the angle to obstructions. Either side adjacent the valves can be placed toward the structure provided the side away from the structure maintains minimum service clearance. Corner installations are strongly discouraged.
PAGE 3
Refrigerant Lines CAUTION The compressor POE oil for R-410A units is extremely susceptible to moisture absorption and could cause compressor failure. Do not leave system open to atmosphere any longer than necessary for installation. Use only refrigerant grade (dehydrated and sealed) copper tubing to connect the condensing unit with the indoor evaporator. After cutting the tubing, install plugs to keep refrigerant tubing clean and dry prior to and during installation.
PAGE 4
Refrigerant Line Connections IMPORTANT To avoid overheating the service valve, TXV valve, or filter drier while brazing, wrap the component with a wet rag, or use a thermal heat trap compound. Be sure to follow the manufacturer’s instruction when using the heat trap compound. Note: Remove Schrader valves from service valves before brazing tubes to the valves. Use a brazing alloy of 2% minimum silver content. Do not use flux. Pressure test the system using dry nitrogen and soapy water to locate leaks.
PAGE 5
Local codes often require a disconnect switch located near the unit; do not install the switch on the unit. Refer to the installation instructions supplied with the indoor furnace/air handler for specific wiring connections and indoor unit configuration. Likewise, consult the instructions packaged with the thermostat for mounting and location information. Overcurrent Protection The following overcurrent protection devices are approved for use.
PAGE 6
Adequate refrigerant charge for the matching HSVTC evaporator coil and 15 feet of lineset is supplied with the condensing unit. If using evaporator coils other than HSVTC coil, it may be necessary to add or remove refrigerant to attain proper charge. If line set exceeds 15 feet in length, refrigerant should be added at .6 ounces per foot of liquid line. NOTE: Charge should always be checked using superheat when using a piston and subcooling when using TXV equipped indoor coil to verify proper charge.
PAGE 7
Charge Verification Final Charge Adjustment The outdoor temperature must be 60°F or higher. Set the room thermostat to COOL, fan switch to AUTO, and set the temperature control well below room temperature. Purge gauge lines. Connect service gauge manifold to base-valve service ports. Run the system (on low stage for two-stage units) for 10 minutes to allow pressures to stabilize, then check subcooling and/or superheat as detailed in the following sections. Superheat = Suct. Line Temp. - Sat. Suct. Temp.
PAGE 8
SATURATED LIQUID PRESSURE TEMPERATURE CHART SATURATED SUCTION PRESSURE TEMPERATURE CHART SATURATED SUCTION SUCTION PRESSURE TEMPERATURE ºF LIQUID PRESSURE SATURATED LIQUID TEMPERATURE ºF PSIG R-22 R-410A PSIG R-22 R-410A 50 26 1 200 101 70 52 54 56 58 60 62 64 66 68 28 29 31 32 34 35 37 38 40 3 4 6 7 8 10 11 13 14 210 105 73 220 108 76 225 110 78 235 113 80 245 116 83 255 119 85 265 121 88 275 124 90 285 127 92 70 72 74 76 78 80 41 42 44 45 46 48 15 16 17 19 2
PAGE 9
Fixed Orifice 1. Temporarily install a thermometer 4-6" from the compressor on the suction line. Ensure the thermometer makes adequate contact and is insulated for best possible readings. Use vapor temperature to determine superheat. 2. Refer to the superheat table provided for proper system superheat. Add charge to lower superheat or recover charge to raise superheat. If subcooling is low and superheat is high, add charge to raise subcooling to 7 to 9 ºF then check superheat. c.
PAGE 10
Troubleshooting Information COOLING/HP ANALYSIS CHART Power Failure Blown Fuse Unbalanced Power, 3PH Loose Connection Shorted or Broken Wires Open Fan Overload Faulty Thermostat Faulty Transformer Shorted or Open Capacitor Internal Compressor Overload Open Shorted or Grounded Compressor Compressor Stuck Faulty Compressor Contactor Faulty Fan Relay Open Control Circuit Low Voltage Faulty Evap.
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PAGE 12
SPLIT SYSTEMS AIR CONDITIONING AND HEAT PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS We strongly recommend a bi-annual maintenance checkup be performed before the heating and cooling seasons begin by a qualified servicer. Replace or Clean Filter Clean Outside Coil (Qualified Servicer Only) IMPORTANT NOTE: Never operate unit without a filter installed as dust and lint will build up on internal parts resulting in loss of efficiency, equipment damage and possible fire.