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Carrier 50DD016 - User Manual

Carrier 50DD016
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Carrier 50DD016 Specifications

General IconGeneral
BrandCarrier
Model50DD016
CategoryAccessories
LanguageEnglish

Summary

INSTALLATION

Rigging and Unit Placement

Proper unit placement, lifting, and leveling are crucial for safe installation.

Roof Curb

Instructions for installing the roof curb for proper unit drainage and sealing.

Slab Mount

Guidelines for preparing a level concrete slab for unit installation.

Positioning

Advice on unit placement for airflow, safety, and service access.

Field-Fabricated Ductwork

Unit Duct Connections

Details on connecting ductwork to the unit, including concentric and side connections.

Units With Economizer

Specific duct connection limitations for units with an economizer.

Units With Manual Damper

Options for connecting ductwork to units with manual dampers.

Rigging Details

UNITS 50 DD024, 028, 034, 044 AND 054

Information for side duct connections on larger units.

To convert unit for thru-the-side duct connection

Step-by-step procedure for converting units for side duct connections.

Economizer Hood Installation, 50 DD024, 028, 034, 044, 054

Exhaust Air Hood Installation

Condensate Drains

Manual Damper Hood Adjustment, All Units

Economizer Hood Installation, 50 DD024, 028, 034, 044, 054

Exhaust Air Hood Installation

Condensate Drains

Field Power Supply

Field Control Wiring

CONSTANT VOLUME UNITS

Wiring for thermostats and control panels in constant volume systems.

VARIABLE VOLUME UNITS

Control wiring details for units without room thermostats.

Outdoor Air Thermostat (electric heat units only)

Installation and wiring of outdoor air thermostats for electric heat staging.

Compressor(s)

Liquid Line Service Valves

Indoor Air Fans

START-UP

Cooling (Constant Volume Units)

Initial steps for starting cooling operation on constant volume units.

Heating (Electric Heat Units)

TO SHUT OFF UNIT

Procedures for safely shutting down the unit.

Automatic Changeover

Economizer Operation

THERMOSTAT SETTINGS

Setting outdoor air thermostat for fresh air cooling.

Head Pressure Control

Capacity Control (Constant Volume Units)

UNITS 50 DD012 AND 016

Cooling stage control for 50DD012 and 016 units.

UNIT 50 DD024

Cooling stage control for 50DD024 units.

UNITS 50 DD028, 034, 044 AND 054

Cooling stage control for larger units.

Compressor Capacity Control Unloader

Capacity Control, Heating

Variable Volume Units

Control Panel Relocation

Control Sequence Checkout

Seven-Day Timer Adjustment

Proportional Thermostat

TEMPERATURE SETTING

Adjusting the temperature setting on the proportional thermostat.

RANGE ADJUSTMENT

Adjusting the range of the proportional thermostat.

Step Controller

DETERMINING SWITCH SETTINGS

Setting and adjusting step controller switches for unit operation.

CAM ADJUSTMENTS

SERVICE

Cleaning

Instructions for cleaning unit interior, coils, drains, and filters.

CONDENSATE DRAIN

Maintenance procedures for condensate drains.

RETURN AIR FILTERS

Guidelines for cleaning or replacing return air filters.

Indoor Air Fan Adjustment (50 DD012 and 016)

TO CHANGE FAN SPEED

Steps to adjust indoor fan speed by altering pulley settings.

Indoor Air Fan Adjustment (50 DD024, 028, 034, 044, 054)

PULLEY REMOVAL

Steps for removing fan pulleys from the motor shaft.

PULLEY ALIGNMENT

Procedure for aligning fan pulleys to ensure proper operation.

BELT TENSION

Methods for adjusting belt tension on indoor fan motors.

Exhaust Air Fan Adjustment

Outdoor (Condenser) Air Fan Adjustment

Economizer Damper Adjustment

Units 50 DD012 and 016

Damper adjustment for economizer on specific models.

Units 50 DD024, 028, 034, 044 and 054

Damper adjustment for economizer on larger models.

DAMPER VENT POSITION SETTING

POWER FAILURE

Refrigerant Charge

UNIT 50 DD012

No Charge

Standard evacuation procedures before charging.

Low Charge

Procedure for adding refrigerant to correct low charge.

UNIT 50 DD016

No Charge

Standard evacuation procedures before charging.

UNITS 50 DD024, 028, 034, 044 AND 054

No Charge

Standard evacuation procedures before charging.

Low Charge

Procedure for adding refrigerant using sight glass.

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