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GENERAL

Model BUZ units are factory assembled heat pumps designed for
outdoor installation on a roof top or a slab. Field-installed electric
heater accessories are available to provide supplemental electric
heat combined with electric cooling and heating.

The units are completely assembled on rigid, removable base
rails. All piping, refrigerant charge, and electrical wiring is fac-
tory installed and tested. The units require only electric power
and duct connections at the point of installation.

The electric heaters have nickel-chrome resistance wire ele-
ments and utilize single point power connection.

INSPECTION

As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier's freight bill.

A separate request for inspection by the carrier's agent should

be made in writing. Refer to Form 50.15-NM for additional infor-
mation.

REFERENCE

Additional information on the design, installation, operation
and service of this equipment is available in the following refer-
ence forms:

55.70-N1            — General Installation

55.70-N2            — Pre-start & Post-start Check List

035-16605-003  — Electric Heater Accessory

REPLACEMENT PARTS

Refer to User’s Maintenance and Service Information
Manual for complete listing of replacement parts on this
equipment.

CAUTION

THIS PRODUCT MUST BE INSTALLED IN STRICT COMPLIANCE WITH THE ENCLOSED INSTALLATION INSTRUCTIONS
AND ANY APPLICABLE LOCAL, STATE, AND NATIONAL CODES INCLUDING, BUT NOT LIMITED TO, BUILDING, ELEC-
TRICAL, AND MECHANICAL CODES

WARNING

INCORRECT INSTALLATION MAY CREATE A CONDITION WHERE THE OPERATION OF THE PRODUCT COULD CAUSE
PERSONAL INJURY, PROPERTY DAMAGE AND/OR DEATH.

WARNING

DE-ENERGIZE THE ELECTRICAL POWER TO THE UNIT BEFORE ATTEMPTING TO INSPECT, REPAIR OR PERFORM
MAINTENANCE TO THE UNIT.

SINGLE PACKAGE HEAT PUMPS

Supersedes:  Nothing

035-20188-000-A-0704

MODELS BAUZ024 THRU 060

2 THRU 5 TON

WITH R-410A REFRIGERANT

(13 SEER)

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 damage may result if installation procedure is not handled properly.

CAUTION

THIS SYSTEM USES R-410A REFRIGERANT WHICH OPERATES AT HIGHER PRESSURES THAN R-22. NO OTHER RE-
FRIGERANT MAY BE USED IN THIS SYSTEM.

INSTALLATION MANUAL

Summary of Contents for BAUZ Series

Page 1: ...Post start Check List 035 16605 003 Electric Heater Accessory REPLACEMENT PARTS Refer to User s Maintenance and Service Information Manual for complete listing of replacement parts on this equipment C...

Page 2: ...nser section 5 Maintain level tolerance of unit to 1 8 maximum RIGGING OR HANDLING Care must be exercised when moving the unit Do not remove any packaging until the unit is near the place of installat...

Page 3: ...densate drain The plumbing must conform to local codes Use a seal ing compound on male pipe threads Install the condensate drain line NPTF to spill into an open drain SERVICE ACCESS Access to all serv...

Page 4: ...refrigerant leaks re placing refrigerant components such as filter drier pressure switch metering device or coil Units are shipped with compressor mounting which are factory adjusted and ready for op...

Page 5: ...4 208 230 1 60 187 253 14 3 60 0 0 9 4 8 21 7 30 30 0 96 40 030 208 230 1 60 187 253 16 4 72 5 1 0 4 8 24 2 35 35 0 96 40 208 230 3 60 187 253 11 6 60 0 1 0 4 8 18 8 25 25 0 96 75 460 3 60 414 504 5 0...

Page 6: ...5 150 150 175 175 030 208 230 3 60 11 6 60 0 1 0 4 8 2NH04501025 2NH04501525 7 5 10 0 11 3 15 0 20 8 24 1 31 3 36 1 44 7 48 7 57 7 63 7 45 50 60 70 45 50 60 70 036 208 230 3 60 12 9 77 0 1 0 6 9 2NH04...

Page 7: ...Performance Table 2 The pressure thru the economizer is greater for 100 outdoor air then for 100 return air If the resistance of the return air duct system is less then 0 25 IWG the unit will deliver...

Page 8: ...RALL OVERALL All dimensions are in inches They are subject to change without notice Certified dimensions will be provided upon request UNIT CONDENSATE CONNECTION NPTI TRAP REQUIRED OVERALL SIDE SUPPLY...

Page 9: ...ombination of outdoor ambient and outdoor coil temperatures indicate that defrosting is necessary When coil temperature is below the ini tiate point for the ambient temperature continuously for 4 1 2...

Page 10: ...OFF HEATER BANK 3 ELEC HEAT INSTANT OFF HEATER BANK 2 ELEC HEAT SEC DELAY OFF HEATER BANK 1 ELEC HEAT 1 SEC DELAY OFF FAN 10 SEC DELAY OFF G Y W ON FAN INSTANT ON COMPRESSOR AND OUTDOOR FAN INSTANT ON...

Page 11: ...OFF G W ON FAN INSTANT ON HEATER BANK 1 2 3 ELEC HEAT INSTANT ON HEATER BANK 4 5 6 ELEC HEAT 10 SEC DELAY ON OFF HEATER BANK 4 5 6 ELEC HEAT INSTANT OFF HEATER BANK 1 2 3 ELEC HEAT SEC DELAY OFF FAN 1...

Page 12: ...door coil surface or other parts in the air circuit Cleaning should be as often as necessary to keep the coil clean Use a brush vacuum cleaner attachment or other suitable means If water is used to cl...

Page 13: ...Unitary Products Group 13 035 20188 000 A 0704 FIG 5 TYPICAL WIRING DIAGRAM BUZ MODELS 208 230 1 60 POWER SUPPLY...

Page 14: ...14 Unitary Products Group 035 20188 000 A 0704 FIG 6 TYPICAL WIRING DIAGRAM BUZ 208 230 3 60 POWER SUPPLY...

Page 15: ...Unitary Products Group 15 035 20188 000 A 0704 FIG 7 TYPICAL WIRING DIAGRAM BUZ 460 3 60 POWER SUPPLY...

Page 16: ...an Oklahoma 73069 Subject to change without notice Printed in U S A Copyright by York International Corporation 2004 All Rights Reserved Supersedes Nothing 035 20188 000 A 0704 0 1 2 1 2 3 1 2 4 53 6...

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