Carrier Aquazone 50RHE 042 - User Manual

Carrier is participating in
the Eurovent Certification
Programme. Products are
as listed in the Eurovent
Directory of Certified
Products.
50RHE 006-060
Water-Source Heat Pumps -
Horizontal Units
Installation, Operation and Maintenance Instructions
TM

Carrier Aquazone 50RHE 042 Specifications

General

Brand	Carrier
Model	Aquazone 50RHE 042
Category	Heat Pump
Language	English

Summary

SAFETY CONSIDERATIONS

INSTALLATION

Check jobsite

Verify unit and site readiness for installation and operation.

Check unit

Inspect unit for damage and verify model against shipping details.

Unit location

Inspect unit

Procedures for checking unit for damage and verifying components before installation.

Mounting the unit

Condensate drain

Piping connections

Details on water loop, ground-water, and ground-loop piping systems.

Electrical wiring

Safety and compliance requirements for field-installed electrical wiring.

Low voltage wiring

Instructions for connecting low voltage wiring, thermostats, and accessories.

Thermostat connections

Water freeze protection

Field selection of freeze protection points using jumpers.

Air coil freeze protection

Factory settings and jumper use for air coil freeze protection.

Power connection

Details on line voltage connections and overcurrent protection sizing.

PSC (permanent split capacitor) blower speed selection

Instructions for selecting and changing blower fan speeds.

PRE-START-UP

System checkout

Comprehensive checklist before starting the system.

START-UP

Operating limits

Scroll compressor rotation

Verifying correct compressor rotation direction for proper operation.

Unit start-up cooling mode

Step-by-step guide for starting the unit in cooling mode.

Unit start-up heating mode

Step-by-step guide for starting the unit in heating mode.

Flow regulation

Anti-freeze

Guidelines for using and selecting anti-freeze for freeze protection.

Freeze protection selection

OPERATION

Power up mode

Units with Aquazone Complete C control

Operational modes and sequences for C control.

Units with Aquazone Deluxe D control

Operational modes and sequences for D control.

SYSTEM TEST

Test mode

Entering and operating the unit in a reduced-time test mode.

Retry mode

Aquazone Deluxe D control LED indicators

Understanding status, test, and fault LEDs.

SERVICE

Filters

Importance of clean filters for maximum performance and inspection frequency.

Water coil

Condensate drain pans

Refrigerant system

Procedures for servicing the refrigerant circuit.

Condensate drain cleaning

Air coil cleaning

Condenser cleaning

Checking system charge

Procedures for verifying the refrigerant charge level.

Refrigerant charging

Safe handling and charging of refrigerant.

Air coil fan motor removal

TROUBLESHOOTING

Thermistor

Control sensors

START-UP CHECKLIST

Pre-start-up

Checks to perform before initial unit power-up.

Start-up

Unit voltage - cooling operation

Control voltage