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035-12984-001-A-0204
2 Unitary Products Group
General
................................................................................
1
Inspection
............................................................................
1
Reference
............................................................................
1
Approvals
............................................................................
1
Nomenclature
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2
INSTALLATION
Limitations
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3
Location
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3
Condensate Drainage Precaution
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3
Rigging and Handling
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3
Clearances
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3
Ductwork
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3
Filters
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4
Condensate Drain
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4
Service Access
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4
Blower Speed Selection
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4
Disconnect Switch Bracket For Optional Belt-Drive
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4
Compressors
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4
Thermostat
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4
Power and Control Wiring
...................................................
4
Electric Heaters...................................................................4
Optional Economizer Rain Hood.........................................6
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
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13
Checking Supply Airflow
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13
Secure Owner's Approval
..................................................
14
MAINTENANCE
Normal Maintenance
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14
TABLES
No. Description Page
1 Unit Application Data
..................................
3
2 Air Flow Limitations
....................................
5
3 Physical Data
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7
4 Supply Air Perferformance — BCH048
......
10
5 Supply Air Performance — BCH060
..........
10
6 Motor and Drive Data - Belt-Drive Blower
..
10
7 Static Resistances
......................................
10
8 Electrical Data — Basic Unit
......................
11
9 Electrical Data — Heat Pump
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11
10 Belt-Drive Supply Air Motor Pulley Adj.
.......
13
FIGURES
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
...........................................
13
10 Hole Loc. for Press. Drop Readings
...........
13
11 Press. Drop versus Supply Airflow
.............
13
TABLE OF CONTENTS
B 3 C H A
PRODUCT NOMENCLATURE
PRODUCT GENERATION
3 = Third Generation
PRODUCT CATEGORY
B = Single Package Heat Pump
(Air Cooled)
PRODUCT IDENTIFIER
CH = Heat Pump
VOLTAGE CODE
50 = 380/415-3+N-50
048 = 4 Ton
060 = 5 Ton
40 8 5 0
FACTORY INSTALLED HEAT
A = No Supplemental Heat
NOMINAL COOLING CAPACITY