Carrier 48MA/50ME028 Manuals

Manuals and User Guides for Carrier 48MA/50ME028. We have 1 Carrier 48MA/50ME028 manual available for free PDF download: Installation, Start-Up And Service Instructions Manual

Carrier 48MA/50ME028 Installation, Start-Up And Service Instructions Manual

Carrier 48MA/50ME028 Installation, Start-Up And Service Instructions Manual (48 pages)

Combination Multizone Heating/Cooling Units Gas, Electric, or Glycol Heat

Brand: Carrier | Category: Air Conditioner | Size: 0 MB

Table of Contents

Table of Contents
1
Safety Considerations
2
General
2
Installation
2
Unit Clearances
2
Roof Curb
2
Roof Openings
2
Rigging Unit
5
Unit Positioning
5
Removing Shipping Shields
5
Field-Fabricated Ductwork
5
Condensate Drains
9
Gas Piping (48MA)
9
Optional Glycol Connections (50ME)
10
Field Power Supply Wiring
10
- Zone Module Connections
  14
- Zone Thermostats
  14
Field Control Wiring
14
- ACCESSORY REMOTE CONTROL PANEL Reheat Humidity Control
  34
Optional Economizer
34
Optional Exhaust Damper
34
Start-Up
34
Evaporator Fan
34
Compressor Rail Shipping Bolts
34
Refrigerant Valves
34
Zone Module Gas Valves (48MA)
34
Gas Heat Lighting Procedure (48MA)
35
Main Burner Adjustment (48MA)
36
Outdoor-Air Thermostat Adjustment
36
- (50ME with Electric Heat)
  36
- Cooling
  38
- Units with 2-Element Heaters
  38
- Units with 3-Element Heaters
  38
Optional Glycol Heating Coils
38
Zone Airﬂow Adjustment
38
Sequence of Operation
38
Service
39
Cabinet Panels and Grilles
39
- Side Panels
  39
- Top Panels
  39
Cleaning
39
- Condenser and Outdoor-Air Cooling Coils
  39
Airﬂow Switches
39
- Device
  40
- To Add or Remove Oil
  40
Compressor Capacity Control Unloader(S)
40
- Control Set Point
  40
- Pressure Differential
  40
Crankcase Heater(S)
40
Refrigerant Charge
40
- No Charge
  40
- Low Charge
  40
Head Pressure Control
40
- Fan Speed Adjustment
  41
- Lubrication
  41
Condenser Fans
41
Evaporator Fans and Motor
41
- Motor Removal
  41
- Fan Shaft Bearing Removal
  41
- Pulley Removal
  42
- Belt Tension Adjustment
  42
Forced-Draft Blower (48MA)
42
- AIR SHUTTER ADJUSTMENT Zone Module Transformers
  42
Optional Economizer
42
- Operation
  42
Optional Exhaust Damper
42
Replacement Parts
42
Pre-Start-Up
48
Start-Up Checklist
48

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