Carrier 50RLP installation instructions PremierLink Control Module

POWER RECEPTACLE — A power receptacle is provided in the Aquazone™ system control panel and is located in the bottom left corner. Specifications for the power receptacle are as follows:

Power: 120 vac

Rating: 15A @ 120 vac for receptacles 15A @ 120 vac for switch 250 V for fuse

WATER TEMPERATURE SENSORS — Two water tem- perature sensors and thermowells have been provided with the Aquazone system control panel. The first sensor is utilized to read loop supply water temperature, such that the system control panel can adjust heat rejection and heat addition equipment to maintain the loop temperature based on user input. The second sensor may be installed to monitor return loop water temperature. The active sensing element is a highly stable precision thermistor material accurate to within ± 0.36 F. The temperature range of the sensor is 10 F to 230 F.

WATER PRESSURE SENSOR — A water pressure sensor is provided with the Aquazone system control panel with variable speed pumping only, and is utilized to operate variable frequen- cy drives for system pumps. The water sensor senses system pressure and the pressure is sent to the system control panel. The Aquazone system control panel speeds up or slows down the variable frequency drive to control the pump in order to keep the system at the correct pressure.

When a variable frequency drive is used for system pump- ing, the Aquazone water source heat pumps are typically furnished with a factory or field-mounted solenoid valve that allows water to flow though the heat pump. When solenoid valves open, the system pressure drops, which results in the variable frequency drive speeding up to allow the pump to

provide more water. When solenoid valves close, the system pressure rises, which results in the variable frequency drive slowing down to allow the pump to provide less water.

WATER FLOW SWITCH — A factory-provided water flow switch is included with the Aquazone system control panel and must be field-installed in the water loop piping. The flow switch is connected to the control panel by a cable with a watertight connector. This device uses a triac output that cannot be connected directly to the Main Base Board. Therefore, a control relay is used to signal the Main Base Board that loop water flow is detected. The switch contains a fifteen-turn adjustment potentiometer, to be used to adjust the set point in a range of 3 to 60 cm/sec. The factory set point is 20 cm/sec.

The potentiometer switch may be adjusted down to zero velocity (no flow) or above 60 cm/sec, however operation in those ranges may not be linear or reliable.

Water Source Heat Pumps with PremierLink™ Controller Hardware — When a CCN system installa- tion is implemented, a factory-mounted PremierLink controller is provided with the water source heat pump units. The package from the factory includes the PremierLink controller, supply air temperature sensor, and leaving water temperature sensor.

PREMIERLINK CONTROLLER — PremierLink controllers can be provided with any Aquazone water source heat pump product by selecting this option in the model nomenclature. See Fig. 6.

The PremierLink controller is provided with the Complete C unit controller. Factory supplied wiring is illustrated in Fig. 7.

Fig. 6 — PremierLink™ Control Module

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