York B3CH 048, B3CH060 User Manual

SUNLINE 2000

SINGLE PACKAGE HEAT PUMPS

INSTALLATION INSTRUCTION

GENERAL

YORK Model BCH units are single package heat pumps designed for outdoor installation on a rooftop or a slab. Supplemental electric heaters are available as field-installed accessories. The units are manufactured under ISO 9002 Quality System Certification.

Units are completely assembled on rigid, permanently attachedbaserails.Allpiping,refrigerant charge, andelectrical wiring is factory-installed and tested. The units require only electricpowerandductconnectionsatthe point of installation.

The supplemental electric heaters have nickel-chrome elements and utilize single point power connection.

Supersedes: 511.13-N1YI (900)/035-12984-000

MODELS B3CH 048 AND 060

(WORLD 50 HZ)

530.18-N7.1V -Electric Heater Accessory

•

• 530.18-N7.2V -Fuse Block Accessory

Renewal Parts:

•

Refer to Parts Manual for complete listing of replacement parts on this equipment.

All forms referenced in this instruction may be ordered from:

Standard Register Toll Free Tel: (405) 691-1126 Toll Free Fax: (405) 799-7746

035-12984-001-A-0204

INSPECTION

Assoonasaunit is received, itshouldbeinspectedforpossible damage during transit. If damage is evident, the extent of the damageshould be noted on thecarrier's freight bill. Aseparate request for inspection by the carrier's agent should be made in writing. See local distributor for additional information.

APPROVALS

These units are designed and manufactured as follows:

1. For use as a heat pump only unit or a heat pump unit with supplemental electric heat.

2. For outdoor installation only.

REFERENCE

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

•

55.70-N1 -General Installation

•

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

•

530.18-N1.2V -Economizer Accessory

•

530.18-N1.4V -Fixed Outdoor Air Damper Accessory

•

530.18-N1.6V -Motorized Outdoor Air Damper Accy.

Installershouldpay particular attentionto thewords: NOTE, CAUTIONand WARNING.Notes installation easier. Cautions and/or equipment damage may result if installation procedure is not handled properly.

are given to prevent equipment damage. Warnings are given to alert installer that personal injury

TH IS P RO DU CT MU ST BE INS TAL LED IN STR IC T C O M P LIANCE W ITH THE ENCLOSED INSTALLATION INSTRUCTIONS AND ANY APPLICABLE

LOCAL, STATE, AND NATIONAL CODES INCLUDING, BUT NOT LIMITED

TO, BUILDING, ELECTRICAL, AND MECHANICAL CODES.

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

CAUTION

WARNING

areintended to clarifyor makethe

035-12984-001-A-0204

TABLE OF CONTENTS

General Inspection Reference Approvals Nomenclature

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INSTALLATION

Limitations Location Condensate Drainage Precaution Rigging and Handling Clearances Ductwork Filters Condensate Drain Service Access Blower Speed Selection Disconnect Switch Bracket For Optional Belt-Drive Compressors Thermostat Power and Control Wiring

Electric Heaters...................................................................4

Optional Economizer Rain Hood.........................................6

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OPERATION

Cooling System .................................................................12

Preliminary Operation Cooling ..........................................12

Cooling Sequence of Operation ........................................12

Heating Sequence of Operation........................................12

Defrost Sequence of Operation.........................................12

Lockout Control Checking Supply Airflow Secure Owner's Approval

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13 13 14

1 1

Normal Maintenance

1 1 2

No. Description Page

1 Unit Application Data

3 3 3 3 3 3 4 4 4 4

2 Air Flow Limitations 3 Physical Data 4 Supply Air Perferformance — BCH048 5 Supply Air Performance — BCH060 6 Motor and Drive Data - Belt-Drive Blower..10 7 Static Resistances 8 Electrical Data — Basic Unit 9 Electrical Data — Heat Pump

10 Belt-Drive Supply Air Motor Pulley Adj.

4 4 4 4

No. Description Page

1 Center of Gravity........................................ 3

2 Recommended Drain Piping...................... 4

3 Typical Field Wiring.................................... 5

4 Economizer Rain Hood Assembly.............. 6

5 Adjusting Enthalpy Setpoint....................... 7

6 Dimensions and Clearances...................... 8 & 9

7 Defrost Initiation Times .............................. 12

8 Ambient Modified Time/Temp. Control....... 12

9 Belt Adjusment 10 Hole Loc. for Press. Drop Readings 11 Press. Drop versus Supply Airflow

MAINTENANCE

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TABLES

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FIGURES

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3 5

7 10 10

10 11 11 13

13 13 13

PRODUCT NOMENCLATURE

B 3 C H A

PRODUCT CATEGORY

B = Single Package Heat Pump

(Air Cooled)

PRODUCT GENERATION

3 = Third Generation

PRODUCT IDENTIFIER

CH = Heat Pump

2 Unitary Products Group

NOMINAL COOLING CAPACITY

40 8 5 0

048 = 4 Ton 060 = 5 Ton

VOLTAGE CODE

50 = 380/415-3+N-50

FACTORYINSTALLED HEAT

A = No Supplemental Heat

INSTALLATION

LIMITATIONS

These units must be installed in accordance with national and local or municiple safety codes: Refer to Table 1 for Unit Application Data.

If components are to be added to a unit to meet local codes, they

TABLE 1 - UNIT APPLICATION DATA

Voltage Variation

Min. / Max.

°C 14 / 22

°F 57 / 72

°C 7 / 49

°F 45 / 120

°C -23

°F -10

Cooling

Heating

Wet Bulb Temperature of Air on Indoor Coil, Min./Max.

Dry Bulb Temperature of Air on Outdoor Coil, Min./Max.

Minimum Dry Bulb Temperature

of Air on Outdoor Coil

aretobeinstalledatthedealer'sand / or the customer'sexpense.

342 / 457

035-12984-001-A-0204

RIGGING AND HANDLING

Exercise care when moving the unit. Do not remove any packaginguntil the unitis near the place of installation. Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails. Spreaders, whose length exceeds the largest dimension across the unit, MUST be used across the top of the unit.

BEFORE LIFTING AUNIT,MAKE SURE THATITS WEIGHT IS DISTRIBUTED EQUALLY ON THE CABLES SO THAT IT WILL LIFT EVENLY.

Units may also be moved or lifted with a forklift. Slotted openings in the base rails are provided for this purpose.

LENGTH OF FORKS MUST BE A MINIMUM OF 1067mm (42 in.).

Remove the nesting brackets from the four corners on top of the unit. All screws that are removed when taking these brackets off must be replaced on the unit.

APPROXINATE CENTER OF GRAVITY

BACK

CONDENSER COIL END

LOCATION

Use the following guidelines to select a suitable location for these units.

1. Unit is designed for outdoor installation only.

2. Outdoor coil must have an unlimited supply of air.

3. For ground level installation, use a level concrete slab with a minimum thickness of 102mm (4 in.). The length and widthshould be at least 152mm (6 in.) greater than the unit base rails. Do not tie slab to the building foundation.

4. Roof structures must be able to support the weight of the unit and its options and / or accessories. Unit must be installed on a solid level roof curb or appropriate angle iron frame.

CAUTION: If a unit is to be installed on a roof curb or special frame

other than a YORK roof curb, gasketing must be applied toallsurfacesthatcomeincontactwith the unit underside.

5. Maintain level tolerance to 13mm (

in.) maximum across

the entire length or width of the unit.

6. Elevate the unit sufficiently to prevent any blockage of the airentrances by snowin areas wherethere will besnow ac cumulation. Check the local weather bureau for the ex pected snow accumulation in your area.

OUTDOORCOIL CONDENSATEDRAINAGE PRECAUTION

Condensatedrainsfromtheoutdoorcoil during theheatingand defrost cycles. Normally this condensate may be allowed to drain directly onto the ground/roof. A gravel bed is recommended to prevent mud splashing.

WARNING:Theunit should notbe installed in an area wheremud

or ice could cause personal injury. Remember that condensate drips from the outdoor coil during heat and defrost cycles and that this condensate freezes when the temperature of the outdoor air is below 0°C (32

F).

1140

502

“

FIG. 1 - CENTER OF GRAVITY

RefertoTable3forunitweightsandtoFigure 1 for approximate center of gravity.

CLEARANCES

All units require certain clearances for proper operation and service. Refer to Figure 6 for the clearances required for combustibleconstruction,servicing,andproperunitoperation.

WARNING:Do not permit overhanging structures or shrubs to

obstruct outdoor air discharge outlet.

DUCTWORK

A closed return duct system shall be used. This does not preclude use of economizers or outdoor fresh air intake. The supply and return air duct connections at the unit should be madewithflexiblejointstominimizethetransmission of noise.

Thesupply and return air duct systems should be designed for

theairflowandstatic requirements of thejob.Theyshould NOT be sized to match the dimensions of the duct connections on the unit.

CAUTION: When fastening ductwork to the side duct flanges

on the unit, insert the screws through the duct flanges only. DO NOT insert the screws through the casing. Outdoor ductwork must be insulated and water proofed.

Refer to Figure 6 for information concerning side and bottom supply and return air duct openings.

FILTERS

Each unit is supplied with 25mm (1 in.) filters . Replacement

1035

FRONT

2089

“

51mm (2 in.) filters may be used without modification to the filter racks. Filters must always be installed ahead of the evaporator coil and must be kept clean or replaced with same

Unitary Products Group 3

035-12984-001-A-0204

size and type. Dirty filters reduce the capacity of the unit and result in frosted coils or safety shutdown. Minimum filter area and required sizes are shown in Table 3.

CONDENSATE DRAIN

Plumbing must conform to local codes. Use a sealing compound on male pipe threads. Install a condensate drain linefromthe19mm(

76 3"

51 2"

in.)PVCfemaleconnectionon the unit to

FIG. 2 - RECOMMENDED DRAIN PIPING

spill into an open drain.

NOTE: The condensate drain line MUST be trapped to pro

vide proper drainage. See Figure 2.

SERVICE ACCESS

Access to all serviceable components is provided by the following removable panels:

Compressor compartment

•

Heater compartment

•

Blower compartment

•

Main control box

•

Filter compartment

•

Motor Access (on units w/belt-drive option)

Refer to Figure 6 for location of these access panels.

BLOWER SPEED SELECTION

Threeblowermotor speeds areavailable on theBCH048 units. The speed selection is determined by the airflow and ESP requirements of the applications. BCH060 units have an adjustable motor pulley to achieve the above conditions.

BCH048 units are shipped with the black wire (labeled #8) connectedto the high speed tapon the blower motor.If a lower blower speed is desired, this wire should be moved to the medium or low speed tap on the motor.

DISCONNECT SWITCH BRACKET FOR UNITS WITH OPTIONAL BELT-DRIVE BRACKET

A special bracket for mounting a field-supplied disconnect switch is provided in each BCH060. The bracket is shipped inside the blower compartment taped to the top of the blower housing. Install the bracket on the left hand side of the unit as shownin Figure6. Severalexisting screws at the top of the unit and one approximately midway down from the top will be used for mounting the bracket. Screws should be loosened only NOT REMOVED. Mounting holes in the bracket have elongated keyways allowing easy installation. Re-tighten screws after bracket is in place to ensure panels will remain leak tight.

After this unit is installed, back out the compressor bolts until the sleeve clears the top grommet.

CAUTION: Do Not

loosen compressor mounting bolts.

THERMOSTAT

The room thermostat should be located on an inside wall approximately 1422mm (56 in.) above the floor where it is not subjected to drafts, sun exposure, or heat from electrical fixtures or appliances. Follow manufacturer's instructions enclosed with thermostat for general installation procedure. Color coded insulated wires (#18 AWG) should be used to connect thermostat to unit. See Figure 3 for wiring details.

NOTE: On units with economizer, remove jumper “J1" from

An “Emergency Heat” position is provided with the thermostat.In the “Emergency Heat” position, the thermostat allowselectricresistanceheatonly.The compressorislocked out. Apilot light on the thermostat indicates that the switch is

on “EM HT”.

terminals 8 and 10 on plug connector J3/P7 on the re layboardin the unitcontrolbox. Refer totheunitwiring labels located on the inside of the control box access panel.

POWER AND CONTROL WIRING

Voltagetolerances which must be maintained at the compressor terminals during starting and running conditions are indicated on the unit Rating Plate and Table 1.

The wiring harness furnished with this unit is an integral partof the unit. Field alteration to comply with electrical codes should not be required.

A disconnect switch should be field provided for the unit. The switch must be separate from all other circuits. Refer to Figure 6forinstallationlocation.If any of thewiresuppliedwith the unit mustbe replaced, replacement wire must be of the typeshown on the wiring diagram.

Electrical lines must be sized properly to carry the load. USE COPPERCONDUCTORSONLY.Eachunit must bewired with a separate branch circuit fed directly from the meter panel and properly protected.

CAUTION: When connecting electrical power and control wir

Refer to Figure 3 for typical field wiring and to the appropriate unit wiring diagram for control circuit and power wiring information. Refer to Tables 8 and 9 for electrical data.

ing to the unit, waterproof type connectors MUST BE USED so that water or moisture cannot be drawn into the unit during normal operation. The above waterproofing conditions also apply when installing a field-supplied disconnect switch.

ELECTRIC HEATERS

Supplemental electric heaters may be ordered as a fieldinstalled accessory. Refer to Form 530.18-N7.1V for installation instruction. These approved heaters are located within the central compartment of the unit (see Figure 6 for access panel) with the heating elements extending into the supply air chamber.

COMPRESSORS

On some units the compressor is mounted on springs which have been tightened down for shipment only.

4 Unitary Products Group

Fuses are supplied, where required, by the factory. Some kW sizes require fuses and others do not. Refer to the electric

TABLE 2 - AIR FLOW LIMITATIONS

NOMINAL

HEATER

SIZE

7 10 15 20 30

VOLTAGE

380/415-3+N-50

CONTROL WIRING

UNIT MODEL SIZE, NOMINAL TONS

MINIMUM SUPPLYAIR CFM

1,300 1,300 1,300 1,300

1,600 1,600 1,600 1,600

–

1,600

035-12984-001-A-0204

1 Typical 24-volt thermostat with subbase

-2ET03700424 for manual changeover.

Only required on units with supplemental electric heat.

Note: The thermostat terminals shown above are typical. Check thermostat and unit wiring diagrams for correct wiring connections.

POWER WIRING

CONTACTOR

TO REMOTE SENSOR 2ET04701324 IF USED

1 Typical Electronic programmable thermostat 2ET04701124 with subbase for

either manual or automatic changeover.

Only required on units with economizer. Remove jumper L2 from terminals

4 and 9 on jumper plug P7. The outdoor air intake dampers will return to their fully closed position when the thermostat switches to the “unoccupied” mode.

Second stage cooling may be used on units with economizer. Remove jumper

J1 from terminals 8 and 10 on jumper plug connector P7.

Only required on units with supplemental electric heat.

NEUTRAL TERMINAL BLOCK

FIELD-SUPPLIED

DISCONNECT

GROUND LUG

REFER TO ELECTRICAL DATA TABLES TO SIZE THE DISCONNECT SWITCH, THE WIRING AND THE OVERCURRENT PROTECTION.

FIG. 3 - TYPICAL FIELD WIRING

Unitary Products Group 5

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