SAFETY CONSIDERATIONS
Installation Instructions
48HJ004---007 48HE003---006
ELECTRICAL SHOCK HAZARD
INSTALLATION
Step 3 -InstallExternal Trap for Condensate Drain
SLAB MOUNT Horizontal Units Only
FIRE, EXPLOSION HAZARD
48HJ004-007
48HE,HJ
Fig. 2 --- Roof Curb Details
Step 5 -InstallFlue Hood
Step 6 -InstallGas Piping
PROPERTY DAMAGE HAZARD
positioning
48HE,HJ
Fig. 7 --- Roof Curb Alignment
PROPERTY DAMAGE HAZARD
FIRE, EXPLOSION HAZARD
C06112
Fig. 8 --- 48HJ004-007Base Unit Dimensions
48HE,HJ
C06113
Fig. 9 --- 48HE003-006Base Unit Dimensions
48HE,HJ
Fig. 11 --- Gas Piping Guide With Accessory
Thru-the-CurbService Connections
field power supply
field control wiring
48HE,HJ
Table 1-PhysicalData 48HJ
48HE,HJ
TABLE 1 - PHYSICAL DATA 48HJ cont
Table 2-PHYSICALDATA 48HE
48HE,HJ
TABLE 2 - PHYSICAL DATA 48HE cont
Fig. 12 --- Power Wiring Connections
Fig. 15 --- Field Control Wiring
48HE,HJ
CONTROL
48HE003---006
48HE,HJ
Table 3-ElectricalData 48HE
48HE,HJ
Table 4-ElectricalData 48HJ
48HE,HJ
Table 4-ElectricalData 48HJ cont
Step 8 -Adjust Factory-InstalledOptions
cobra energy recovery units
Fig. 16 --- Accessory Field-InstalledHumidistat
Assembly
Humidistat Wiring 208/230-VUnit Shown
Damper Installed
LTLO - Low Temperature Lockout
Factory Wiring
Fig. 23 --- Outdoor-AirDamper Position Setting
Install the Supply Air Temperature SAT Sensor
Outdoor Air Temperature Sensor OAT
Install the Indoor Air Quality CO2 Sensor
TEMPERATURE SENSOR
TEMPERATURE SENSOR
48HE,HJ
Table 5-PremierLink Sensor Usage
Fig. 25 --- PremierLinktController Installed
Fig. 26 --- Typical PremierLink Control Wiring
48HE,HJ
PremierLink
48HE,HJ
Return Air Enthalphy Sensor
Fig. 28 --- Differential Enthalpy Control
Sensor and Mounting Plate 33AMKITENT006
Fig. 31 --- Typical Access Panel Locations
Fig. 33 --- Indoor Coil Access Panel Relocation
Outdoor Air Temperature OAT Sensor
48HE,HJ
Supply Air Temperature SAT Sensor
Table 6-SupplyAir Sensor Temperature
Fig. 35 --- Filter Installation
48HE,HJ
Outdoor Enthalpy Changeover
EconoMi$er IV Wiring
48HE,HJ
Exhaust Set Point Adjustment
48HE,HJ
Differential Enthalphy Control
Fig. 39 --- Outdoor-AirDamper Leakage
Fig. 43 --- Outside Air Temperature
Fig. 44 --- Return Air Temperature or Enthalpy
48HE,HJ
Minimum Position Control
48HE,HJ
+ TR
Fig. 45 --- Enthalpy Changeover Set Points
Demand Controlled Ventilation DCV
Fig. 47 --- CO2 Sensor Maximum Range Setting
CO2 Sensor Configuration
Step 9 -Adjust Evaporator-FanSpeed
48HE,HJ
Table 8-CO2 Sensor Standard Settings
Fig. 50 --- Indoor-FanPulley Adjustment
48HE,HJ
Fig. 49 --- Belt Drive Motor Mounting
Table 11-Evaporator-FanMotor Data - Standard Motor
Table 12-Accessorystatic pressure
48HE,HJ
GENERAL FAN PERFORMANCE NOTES
Table 14-48HJOutdoor Sound Power Total Unit
Table 15-48HEOutdoor Sound Power Total Unit
48HE,HJ
Belt Drive
48HE,HJ
Belt Drive
48HE,HJ
Belt Drive
48HE,HJ
Standard Motor Belt Drive
48HE,HJ
Standard Motor Belt Drive
48HE,HJ
AIRFLOW
48HE,HJ
1075
Belt Drive
48HE,HJ
Belt Drive
Belt Drive
48HE,HJ
Belt Drive
48HE,HJ
Standard Motor Belt Drive
48HE,HJ
Standard Motor Belt Drive
48HE,HJ
0.80
48HE,HJ
0.64
PRE-START-UP
START-UP
Step 6 -InternalWiring
Step 7 -RefrigerantService Ports
48HE,HJ
Step 10 -Cooling
Step 11 -MainBurners
Table 37-AltitudeCompensation
Step 13 -SafetyRelief
48HE,HJ
Step 14 -VentilationContinuous Fan
Step 15 -OperatingSequence
Fig. 51 --- DX Cooling Temperature
Fig. 52 --- Economizer Temperature
48HE,HJ
Routine 3 OAT
UNITS WITH HUMIDI-MIZER ADAPTIVE
DEHUMIDIFICATION SYSTEM Normal Design Operation
Subcooling Mode
Fig. 53 --- Humidi-MiZerNormal
SERVICE
Step 1 -Cleaning
Fig. 56 --- Cleaning Condenser Coil
48HE,HJ
Step 3 -Condenser-FanAdjustment
Step 6 -HighPressure Switch
48HE,HJ
Fig. 57 --- Propping Up Top Panel
Step 7 -Loss-of-ChargeSwitch
Fig. 60 --- Cooling Charging Chart
Fig. 61 --- Cooling Charging Chart
48HE,HJ
Fig. 62 --- Cooling Charging Chart
Fig. 64 --- Cooling Charging Chart, 48HJ004 with
Fig. 63 --- Cooling Charging Chart
Fig. 65 --- Cooling Charging Chart, 48HJ005 with
Fig. 66 --- Cooling Charging Chart, 48HJ005 with
Fig. 67 --- Cooling Charging Chart, 48HJ007 with
TO USE COOLING CHARGING CHART, STANDARD UNIT
48HE,HJ
Fig. 68 --- Cooling Charging Chart
Fig. 69 --- Cooling Charging Chart
Fig. 70 --- Cooling Charging Chart
Fig. 71 --- Cooling Charging Chart
Step 12 -LimitSwitch
Table 40-LEDError Code Description
48HE,HJ
Step 13 -BurnerIgnition
Fig. 74 --- Spark Gap Adjustment
Cleaning and Adjustment
5. Reinstall burner rack as described above
Step 15 -ReplacementParts
48HE,HJ
Contactor, Compressor
TROUBLESHOOTING
Step 1 -UnitTroubleshooting
Step 2 -Economi$erIV Troubleshooting
economi$er IV troubleshooting completion
COMPONENT DAMAGE HAZARD
Table 41-LEDError Code Service Analysis
48HE,HJ
Table 42- Heating Service Analysis
48HE,HJ
Table 45-CoolingService Analysis
48HE,HJ
Fig. 76 --- EconoMi$er IV Functional View
48HE,HJ
Table 46-EconoMi$erIV Input/Output Logic
START-UPCHECKLIST Remove and Store in Job File
TEMPERATURES
I. PRELIMINARY INFORMATION
III.START-UP