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INSTALLATION
INSTRUCTION
CONTENTS
GENERAL
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . .4
AGENCY APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . .4
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
See the following page for a complete Table of Contents.
NOTES, CAUTIONS AND WARNINGS
Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes are intended to
clarify or make the installation easier. Cautions are given
to prevent equipment damage. Warnings are given to
alert installer that personal injury and/or equipment dam-
age may result if installation procedure is not handled
properly.
CAUTION:
READ ALL SAFETY GUIDES BEFORE YOU
BEGIN TO INSTALL YOUR UNIT.
SAVE THIS MANUAL
SPLIT-SYSTEM HEAT PUMPS
OUTDOOR UNITS
4
MODEL: EF-07
208/230/460
VOLT ONLY
035-18547-001-A-0902
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Table of Contents
Related Manuals for Unitary products group EF-07
Summary of Contents for Unitary products group EF-07
- Page 1 MAINTENANCE .......21 See the following page for a complete Table of Contents. MODEL: EF-07 NOTES, CAUTIONS AND WARNINGS Installer should pay particular attention to the words: NOTE, CAUTION, and WARNING.
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Page 2: Table Of Contents
SERVICE VALVES ........11 CHARGING CURVE EF-07 EXTENDING THE SERVICE PORTS . -
Page 3: Nomenclature
Airflow Options A = Standard Motor T = 208/230-3-60 Voltage W = 460-3-60 A = None Installation Options B = Disconnect AA = None Special Options AC = Technicoat Generation 1 = First Generation 2nd = Second Generation Unitary Products Group... -
Page 4: General
A separate request for inspection by codes including, but not limited to, building, the carrier's agent should be made in writing. See Form electrical, and mechanical codes. 50.15-NM for more information. Unitary Products Group... -
Page 5: Installation
These units must be installed in accordance with all supports can be channel iron beams or wooden beams national and local safety codes. If no local codes apply, treated to reduce deterioration. installation must conform with the appropriate national Unitary Products Group... -
Page 6: Ground Level Locations
LENGTH OF FORKS MUST BE A MINIMUM OF 54" when lifting from either side. Remove the nesting brackets from the four corners on top of the unit. All screws that are removed to take these brackets off must be replaced on the unit. Unitary Products Group... -
Page 7: Clearances
CONTROL WIRING ENTRY COMPRESSOR AND 2-1/4 5-7/8 CONDENSER FAN MOTOR 32-1/2 70-1/2 ACCESS 1-3/8 DIA. 7/8" KNOCKOUT POWER WIRING ACCESSORY WIRING ENTRY ENTRY CONDENSER FAN MOTOR ACCESS FIGURE 3 - UNIT DIMENSIONS AND CLEARANCES - 7-1/2 TON Unitary Products Group... -
Page 8: Compressors
Refer to Figure 3 for the location of the power wire become excessive and result in malfunctioning of the access opening through the front of the unit. This open- ing will require a field-supplied conduit fitting. unit controls. Unitary Products Group... -
Page 9: Typical Field Wiring
Power Size, Qty. Amps Size Supply Factor Supply (Each 0.94 @ 208V 200/230-3-60 25.6 190.0 208/230-1-60 3.03 38.1 0.84 @ 230V 460-3-60 12.8 95.0 0.86 460-1-60 19.2 Based on three, 50ºC insulated copper conductors in steel conduit. Unitary Products Group... -
Page 10: Refrigerant Piping
Refer to Friction loss should always be based on cooling opera- Figure 5. tion because refrigerant flow rates will be greater dur- ing the cooling cycle than during the heating cycle. Unitary Products Group... -
Page 11: Service Valves
Fitting* ........0.4 psi Vapor Line Pressure Drop = 2.4 psi Unitary Products Group... -
Page 12: Extending The Service Ports
The flow of nitrogen should be continued until the joint has cooled. Clean surfaces are essential for a well brazed NOTE: connection. Unitary Products Group... - Page 13 5. Move the dry nitrogen supply back to the access dry nitrogen. port on the liquid line service valve. After the liquid and vapor lines have been installed, the system should be evacuated and charged. Unitary Products Group...
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Page 14: Evacuating And Charging
Figure 8. Open the liquid and vapor line service valves fully to close their access ports after the system has been charged. Do not charge liquid refrigerant through the compressor suction connection. Unitary Products Group... -
Page 15: Alternate Charging Methods
Refer to Form 690.63-N1V for details regarding the tions. Block the flow of the condenser air, if outdoor ambient balance point control accessory necessary, to assure a head pressure of Model No. 2BP11700224. 280 psig during the charging procedure. Unitary Products Group... -
Page 16: Refrigerant Flow Diagram
035-18547-001-A-0902 FIGURE 7 - REFRIGERANT FLOW DIAGRAM Unitary Products Group... -
Page 17: Start-Up
105º Ambient 95º Ambient 85º Ambient 75º Ambient Suction Pressure FIGURE 8 - CHARGING CURVE EF-07 (COOLING MODE) START-UP 1. Have sufficient clearances been provided? 2. Has all foreign matter been removed from the inte- CRANKCASE HEATER rior of the unit (tools, construction or shipping materials, etc.)? -
Page 18: Initial Start-Up
If discharge pressure falls below 180 PSI, PS NOTE: During the cooling cycle, when the reversing valve will open and de-energize No. 2 fan motor. solenoid becomes energized, operation will be the same as any conventional air conditioning system. Unitary Products Group... -
Page 19: Heating Operation
TH2 of the thermostat. The “AUTO” position, the blower will operate only when supplemental electric heat circuit is controlled thermostat calls for heating operation. through low voltage terminals W, 60 and 66. The standby portion of electric heat (controlled through Unitary Products Group... -
Page 20: Defrost Cycle
OPERATION BELOW 0°F OUTDOOR TEMPERATURE motor protector that is mounted inside the com- pressor housing and is connected between each 1. At 0°F outdoor temperature, the low temperature winding and the common terminal. compressor cutoff thermostat 1TH contacts 1 and 3 Unitary Products Group... -
Page 21: Secure Owner's Approval
SECURE OWNER’S APPROVAL remove the blockage. Reset the thermostat and wait 5 minutes. If the unit doesn’t start, call a serviceman. When the system is functioning properly, secure the owner’s approval. Show him the location of all discon- Unitary Products Group... - Page 22 035-18547-001-A-0902 Unitary Products Group...
- Page 23 035-18547-001-A-0902 Unitary Products Group...
- Page 24 Subject to change without notice. Printed in U.S.A. 035-18474-001-A-0602 Copyright © by Unitary Products Group 2002. All rights reserved. Supersedes: 035-18547-000-A-0302 Unitary 5005 Norman Products York Group Drive 73069...
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