Fig. 1ÐModel 50JS/JX
SAFETY CONSIDERATIONS
General
Installation, Start-Upand Service Instructions
NEC. REQUIRED CLEARANCES
Fig. 2Ð50JS018-042/50JX024-036Unit Dimensions
REQUIRED CLEARANCE TO COMBUSTIBLE MATL
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
REQUIRED CLEARANCE FOR OPERATION AND SERVICING
Fig. 3Ð50JS048-060/50JX042-060Unit Dimensions
REQUIRED CLEARANCE TO COMBUSTIBLE MATL
NEC. REQUIRED CLEARANCES
RECEIVING AND INSTALLATION Step 1ÐCheck Equipment
Fig. 4ÐRoof Curb Dimensions
Step 1ÐGeneral
Fig. 7ÐThreading Belt
Fig. 5ÐUnit Leveling Tolerances
Fig. 6ÐSlab Mounting Detail
Step 2ÐProvide Unit Support
Fig. 8ÐSuggested Rigging
Step 5ÐSelect and Install Ductwork
Step 6ÐProvide for Condensate Disposal
Table 1AÐPhysical Data
Table 1BÐPhysical Data
Fig. 10Ð50JX with Duct Covers On
Fig. 9ÐTypical Installation
Step 7ÐInstall Electrical Connections
Unit shown with optional louvered grille
Fig. 12ÐWiring Schematics
Fig. 13ÐWiring Schematics
A00074
Fig. 14ÐWiring Schematics
A00075
Table 3AÐElectrical DataÐ50JS
→Table 3BÐElectrical DataÐ50JX
Fig. 15ÐElectrical Data Legend
Fig. 17ÐLine Power Connections
Fig. 18ÐControl Wiring Plate
Fig. 16ÐControl Connections
Fig. 20ÐFan Blade Clearance
Step 2ÐStart-UpAdjustments
Fig. 19ÐTransformer Label
PRE-START-UP
LCS - Loss of Charge Switch
Fig. 21ÐTypical Heat Pump Operation, Heating Mode
Fig. 22ÐTypical Heat Pump Operation, Cooling Mode
LCS - Loss of Charge Switch
Table 4AÐWet Coil Air Delivery
Unit 50JS 018-060Deduct 10% for
Table 4BÐWet Coil Air Delivery
Unit 50JX 024-060Deduct 10% for
Fig. 25ÐCooling Charging Chart, 50JS030 Units
Fig. 23ÐCooling Charging Chart, 50JS 018 Units
Fig. 24ÐCooling Charging Chart, 50JS 024 Units
Fig. 26ÐCooling Charging Chart, 50JS 036 Units
Fig. 28ÐCooling Charging Chart, 50JS 048 Units
Fig. 27ÐCooling Charging Chart, 50JS 042 Units
Fig. 29ÐCooling Charging Chart, 50JS 060 Units
MAINTENANCE
Fig. 34ÐCooling Charging Chart, 50JX 048 Units
Fig. 30ÐCooling Charging Chart, 50JX 024 Units
Fig. 32ÐCooling Charging Chart, 50JX036 Units
Fig. 31ÐCooling Charging Chart, 50JX 030 Units
AIR FILTER
Fig. 37ÐDefrost Thermostat
Fig. 36ÐRefrigerant Circuit
SYSTEM INFORMATION
Table 5ÐCooling and Heating Troubleshooting Chart
START-UPCHECKLIST
Cooling and Heating Troubleshooting Chart contd
REMOVE AND STORE IN JOB FILE
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