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Household Appliance
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Gas Heater
Carrier
48HC
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C10955
Fig. 7 --Roof Curb Details – 20 and 24 Size Units
48HC
Contents
Main
48HC
Installation Instructions
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
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INSTALLATION
Jobsite Survey
Step 1 Plan for UnitLocation
Step 2 Plan for Sequenceof Unit Installation
Step 3 Inspectunit
Step 4 ProvideUnit Support
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Step 5 FieldFabricate Ductwork
Step 6 Rig and PlaceUnit
DETAIL A
Step 7 HorizontalDuct Connection
Step 8 Install OutsideAir Hood Factory Option
Step 9 Install Flue Hood and Combustion Air Hood
Step 10 InstallGas Piping
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Step 11 Install External Condensate Trapand Line
Step 12 Make Electrical Connections
Units Without Disconnect Option
Units With Disconnect Option
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NOTICE/AVIS
CAUTION
!
Humidi--MiZerRControlConnections
Fig. 34 --Typical Humidi--MiZerRAdaptiveDehumidification System HumidistatWiring
PremierLinkt(Factory--Option)
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Field Connections
Table5 Space Senso r Mode
Table6 Thermostat Mode
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Economizer Controls
}
BLACK
RED
Io VoVin Gnd
TB3-7 TB3-13
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RTUOp en ControlSystem
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Field Connections
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CommunicationWiring --Protocols
P1 P1 P5 P5
Outdoor Air Enthalpy Control (PNO 33CSENTHSW)
Smoke Detectors
NOTE: See page 49 for table legend a nd notes.
Table11 Unit Wire/Fuseor HACR Breaker Sizing Data
Table11 -- Unit Wire/Fuse or HACR Breaker Sizing Data (cont)
48HC
NOTE: See page 49 for table legend a nd notes.
Legend and Notes for Table11
Step 13 Adjust Factory--InstalledOptions
Step 14 Install Accessories
