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Unitary Products Group

035-15410-002-B-0404

FIG. 4

- UNIT DIMENSIONS AND CLEARANCES

- 7-1/2 & 10 TON

All dimensions are in inches. They are

subject to change without notice. Certified

dimensions will be provided upon request.

CLEARANCES

Overhead (Top)

120"

Front

(Piping and Access Panels)

30"

Left Side

24"

Right Side

24"

Rear

K- 24"

Bottom

Units must be installed outdoors. Overhanging structures or shrubs should

not obstruct air discharge outlet.

Adequate snow clearance must be provided if winter operation is expected.

Содержание E2FB120

Страница 1: ...elistingof replacementparts on this equipment The above forms may be ordered from Standard Register TOLL FREE Telephone 877 318 9675 TOLL FREE Fax 877 379 7920 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 the installer thatperso...

Страница 2: ... Sizing 7 Service Valves 8 EXTENDING THE SERVICE PORTS 8 INSTALLATION 8 EVACUATING AND CHARGING 9 BALANCE POINT SETTING 10 OPERATION GENERAL 13 SYSTEM SEQUENCE OF OPERATION Cooling Operation 13 Heating Operation 13 Defrost Cycle 14 Operation Below 0 F 14 Emergency Heat Operation 14 START UP CRANKCASE HEATER 10 Ton Unit Only 15 PRE START CHECK 15 INITIAL START UP 15 SAFETY FEATURES 15 SECURE OWNER ...

Страница 3: ...ll not settle Any strain on the refrigerantlines may cause a refriger antleak Aone piececoncreteslabwithfootersthatextendbe low the frost line is recommended The slab should not be tied tothebuildingfoundationbecausenoiseandvibrationwilltele graph into the building A unit can also be supported by concrete piers These piers should 1 extendbelowthefrostline 2 be locatedunderthe unit s four corners a...

Страница 4: ...ck the size of the power wire the discon nect switch and the fuses against the data on Table 3 NOTE Copperconductorsmustbeinstalledbetweenthedis connectswitch and the unit Refer to Figure 4 for the location of the power wire access openingthroughthefrontoftheunit Thisopeningwillrequirea field supplied conduit fitting The field supplied disconnect switch must be suitable for an outdoor location Alt...

Страница 5: ...ly Qty FLA Each E3FB 090A 25 200 230 3 60 25 6 180 0 0 94 208V 208 230 1 60 1 3 03 35 1 60 0 84 230V 46 460 3 60 13 5 95 0 0 86 460 1 60 1 1 6 18 4 30 50 308 415 3 50 13 5 85 0 0 86 380V 380 415 1 50 1 1 6 18 4 30 0 79 415V E2FB 120A 25 208 230 3 60 42 0 239 0 0 91 208V 208 230 1 60 2 2 7 51 8 70 0 82 230V 46 460 3 60 19 2 125 0 0 82 460 1 60 2 1 6 24 7 35 50 380 415 3 50 19 6 118 0 0 87 380V 380 ...

Страница 6: ...out notice Certified dimensions will be provided upon request CLEARANCES Overhead Top 1 120 Front Piping and Access Panels 30 Left Side 24 Right Side 24 Rear K 24 Bottom 2 0 1 Units must be installed outdoors Overhanging structures or shrubs should not obstruct air discharge outlet 2 Adequate snow clearance must be provided if winter operation is expected ...

Страница 7: ... cooling and heating cycles Friction loss should always be based on cooling operation be cause refrigerant flow rates will be greater during the cooling cycle than during the heating cycle Oil return will be critical during 1 The cooling cycle when the outdoor unit is above the indoor unit detail 1 of Figure 5 2 The heating cycle when the indoor unit is above the outdoor unit detail 4 of Figure 5 ...

Страница 8: ...n recovered and that the liquid service valve on the unit is front seated and closed The valve stem should be turned to its maxi mum clockwise position 2 Drill a small hole through the disc before unbrazing it to per mit a flow of dry nitrogen through the connection while it is being unbrazed WARNING This hole is also required to prevent the internal pressure from building up as the disc is being ...

Страница 9: ... service valve and the hole in the vapor disc 5 After the disc has been removed burnish the external sur faces and clean the internal surfaces of the vapor connec tion and the vapor piping The vapor line can now be brazed to the vapor connection on the outdoor unit while maintaining the flow of dry nitrogen Aftertheliquidandvaporlineshavebeeninstalled thesystem should be evacuated and charged EVAC...

Страница 10: ...1 The outdoor design temperature 2 The building heat loss at the outdoor design temperature and 3 The heating capacity of the system at the outdoor design temperature Refer to Form 515 41 AD1 to determine balance point Referto 035 05163 001 for details regardingthe outdooram bient balance point control accessory Model No 2BP11700224 10 Unitary Products Group 035 15410 002 B 0404 FIG 6 EXTENDING TH...

Страница 11: ...Unitary Products Group 11 035 15410 002 B 0404 FIG 7 REFRIGERANT FLOW DIAGRAM ...

Страница 12: ...035 15410 002 B 0404 12 Unitary Products Group FIG 8 CHARGING CURVE EFB090 FIG 9 CHARGING CURVE EFB120 ...

Страница 13: ... temperature reaches 255 F 2TH thermostat will open and the defrost control board will lock out the compressor If the suction pressure falls to 7 psig the low pressure switch will open and the defrost control will lock out the compressor 8 If the control that caused the lockout has automatically re set the unit can be restarted by one of the following a Turning the system switch on the thermostat ...

Страница 14: ... defrost cycle will be terminated when a the liquid temperature exceeds 55 F or b 10 minutes have passed since defrost initiation The 10 minute cycle time independent of liquid line tem perature is controlled by the defrost control board 4 At defrost termination the unit returns to the normal heat ing operation OPERATION BELOW 0 F OUTDOOR TEMPERATURE 1 At 0 F outdoor temperature the low temperatur...

Страница 15: ...or vibrations and make the necessary adjustments to correct e g fan blade touching shroud refrigerant lines hitting on sheet metal etc 8 After the unit has been operating for several minutes shut off the main power supply at the disconnect switch and in spect all factory wiring connections and bolted surfaces for tightness SAFETY FEATURES 1 All outdoor fan motors have inherent protection with auto...

Страница 16: ...s Group 5005 York Drive Norman Oklahoma 73069 Subject to change without notice Printed in U S A Copyright 2004 by York International Corporation All Rights Reserved 035 15410 002 B 0404 Supersedes 035 15410 002 A 0304 ...

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