Carrier 48EW Manuals

Manuals and User Guides for Carrier 48EW. We have 1 Carrier 48EW manual available for free PDF download: Installation, Start-Up And Service Instructions Manual

Carrier 48EW Installation, Start-Up And Service Instructions Manual (119 pages)

Single Package Rooftop Units Electric Cooling/Gas Heating, with Reciprocating Compressor

Brand: Carrier | Category: Air Conditioner | Size: 6 MB

Table of Contents
1
Safety Considerations
1
Step 1 - Provide Unit Support
1
- Roof Curb
  2
- Alternate Unit Support
  2
Installation
1
Roof Mount
2
Step 2 - Rig and Place Unit
2
Step 3 - Field Fabricate Ductwork
2
Step 4 - Make Unit Duct Connections
2
- Base Unit Dimensions
  7
- Rigging Information
  19
- Rigging Weights
  20
- Physical Data
  21
- Operating Weights
  26
- CV Motor Weights
  26
- Vav Motor Weights
  26
- Air Distribution — Thru-The-Side
  27
- Air Distribution — Thru-The-Bottom
  27
- Evaporator Fan Motor Data
  27
- Combustion Fan Housing Location
  28
Step 5 - Install Flue Hood
28
Step 6 - Trap Condensate Drain
28
Step 7 - Install Gas Piping
28
- Field Gas Piping
  29
- 48A,E Series Staged Gas Implementation
  29
Step 8 - Controls Options
29
Controls Options and Configurations
30
Step 9 - Make Electrical Connections
33
- Power Wiring
  33
  - Control Board Diagram
    34
  - Electrical Data
    35
  - Routing through Bottom of Unit
    43
  - Routing through Side of Unit
    43
- Field Control Wiring
  43
- Space Temperature Averaging Wiring
  48
- Field HIR (Heat Interlock Relay) Wiring
  48
Economizer
48
Make Outdoor-Air Inlet Adjustments
48
Step 12 - Install All Accessories
54
- Motormaster III Control Baffle Details
  55
- Motormaster III Sensor Location
  55
- Install Motormaster III Controls
  55
- Electrical Connections
  55
- Side Return Air Conversion
  57
- Side Supply and Return Units
  57
- Ductwork
  57
Step 13 - Field Modifications
57
Start-Up
58
- Crankcase Heaters
  59
- Variable Frequency Drive (VFD)
  59
- Carrier Default Program Parameter Values
  60
- Carrier VFD (Toshiba TOSVERT VF-S9) Program Parameter Values
  62
- Power Exhaust
  63
- Direct Digital Controls DIP Switch Configuration
  63
- DIP Switch Configuration
  64
- Condenser Fans and Motors
  64
- DIP Switch Factory Settings
  65
- Fan Performance
  65
- Motor Limitations
  79
- Standard Efficiency Motors
  79
- High Efficiency Motors
  79
- Air Quality Limits
  79
- Economizer Adjustment
  80
- Sequence of Operation
  80
- Filter Replacement
  80
- Return-Air Filters
  80
- User Defined Set Points
  81
- Software Control Link Points
  81
- Cooling, Variable Air Volume (Vav) Units
  82
- Gas Heating, Constant Volume (CV) Units
  82
- Heat Interlock Relay Wiring
  83
- Staged Gas Unit Heating
  83
- Gas Heating, Variable Air Volume (Vav) Units
  83
- Staged Gas System Components
  84
- Stage Gas System Inputs/Outputs
  84
- Operating Modes
  84
- Tempering (Cool) Mode
  84
- Navigator Display
  85
- Navigator Display Menu Structure
  85
- Morning Warm-Up
  85
- Occupied Heat and Morning Warm-Up Operation and Controlling Factors
  86
- Space Temperature Sensor Control
  86
- Space Temperature Reset Sensor
  86
- Space Temperature Reset Example
  86
- Field-Supplied Smoke Detector Wiring
  87
- Supply Air Temperature Reset
  87
- Power Exhaust Operation
  87
- Smoke Control Modes
  87
- Capacity Control, Cooling
  88
- Head Pressure Control
  88
- Motormaster III Control
  88
- Service Access
  89
- Cleaning
  89
- Main Burners
  89
Service
89
- Evaporator Coil
  90
- Condensate Drain
  90
- Gas Heat Section Details
  90
- Typical Gas Heating Section
  90
- Lubrication
  91
- Evaporator Fan Performance Adjustment
  91
- Evaporator Fan Coupling Assembly
  91
- Reassembling the Coupling into the Unit
  91
- Evaporator Fan Service and Replacement
  92
- Belt Tension Adjustment
  92
- Evaporator-Fan Motor Replacement
  92
- Condenser-Fan Adjustment
  92
- Thermostatic Expansion Valve (TXV)
  93
- Power Failure
  93
- Refrigerant Charge
  93
- Gas Valve Adjustment
  93
- Cooling Charging Chart
  94
- Gas Valve
  94
- Main Burner Removal
  94
- Relief Devices
  95
- Replacement Parts
  95
- Typical Wiring Schematics
  95
- Compressor Protection
  95
- Protective Devices
  95
- Filter Drier
  95
- Typical Power Schematic
  96
- Typical 48EK VAV 24-V Control Circuit
  97
- Typical CV 24-V Control Circuit
  98
- Typical 48EK VAV 115-V Control Circuit
  99
- Typical 48EJ CV 115-V Control Circuit
  100
- Label Diagram - Staged Gas Heat
  101
- Typical Refrigerant Circuiting
  103
Troubleshooting
103
Start-Up Checklist
117

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Carrier 48EW Installation, Start-Up And Service Instructions Manual (119 pages)

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