Carrier 50CD/CH User Manual

Details hazards associated with installation and servicing, emphasizing trained personnel and safety precautions.

Covers unit rigging, placement, transportation damage, leveling, and weight considerations for installation.

Provides instructions for installing the unit on a roof curb or a concrete slab, including requirements.

Specifies placement requirements for optimal airflow, safety, and service access, avoiding obstructions.

Details options for outdoor air intake, including dampers and economizers for mixing air.

Instructions for securing ductwork to unit flanges and building structure for supply and return air openings.

Step-by-step guide for assembling and installing the manual outdoor air damper and hood.

Guidance on checking, cleaning, and maintaining the condensate drain and trap for proper operation.

Covers wiring connections, voltage requirements, and phase balance for field power supply installation.

Wiring instructions for units with electric heat and requirements for disconnects based on NEC codes.

Details on installing a thermostat assembly and routing control wires, including heat anticipator settings.

Ensures correct filters are installed and outdoor air inlet screens are in place before operation.

Covers the assembly, wiring, and initial adjustments for the economizer damper motor and related components.

Procedure for adjusting indoor and outdoor damper blades for proper ventilation and airflow control.

Details on adjusting the vent opening based on required vent air and setting the economizer.

Instructions for installing the outdoor air thermostat (OAT) and cooling lockout switch (CLS) within the unit's hood.

Final steps for assembling the economizer, hood, and connecting OAT/EC and CLS switches.

Ensures unit is installed correctly, checks compressor mounting, internal wiring, and refrigerant service valves.

Steps to start the unit in cooling mode, including setting the system selector, fan, and thermostat.

Procedure for starting the unit in heating mode, including thermostat settings and fan operation.

Details on operating the unit in continuous fan mode for ventilation purposes.

Describes how the economizer functions during cooling mode based on ambient temperature and thermostat settings.

General instructions for cleaning the unit interior at the start of heating and cooling seasons.

Step-by-step guide for cleaning the evaporator coil, including power off and component removal.

Instructions for inspecting and cleaning the condenser coil, including checking for debris between fins.

Guidance on maintaining condensate drains, cleaning/replacing filters, and cleaning outdoor air inlet screens.

Details on compressor oil and fan motor bearing lubrication, plus condenser fan height adjustment.

Procedures for evacuating the system and weighing in the specified amount of refrigerant.

Using the specific cooling charging chart to adjust refrigerant for optimal superheat based on ambient conditions.