Check Out & Start-Up - Hayward HP50HA2 Installation And Operation Manual

Above ground & in ground pool/spa heater

GENERAL: After completing the installation connections to the pool heater, follow the procedures outlined below to ensure that the pool heater is function-

ing properly. Before proceeding, MAKE CERTAIN there are no water leaks in any plumbing connections or piping and water flow is within the proper flow rate

ranges. The heater is equipped with a control system that automatically monitors the water temperature set points and safety devices. As water conditioning

is needed, it turns on the compressor to start the appropriate transfer of heat to the water. FIGURE 13 provides a summary of heater components and their

locations in the system. Check that the pump is operating and the system is filled with water prior to starting the heater.

FIGURE 13: Location of Components (heating operation flow shown)

Heat

From

Air

The heat pump takes heat from the environment and uses it to heat the pool water. During heat pump operation, high temperature, high-pressure sub cooled

liquid Refrigerant (A) is throttled by Metering Device (TXV) and turned into low temperature, low-pressure saturated liquid (B). The two-phase Refrigerant flows

through the Air Coil (Evaporator), where the liquid refrigerant evaporates into vapor by absorbing heat from the surrounding air. At the outlet of the Air Coil

(Evaporator) it becomes a low temperature, low- pressure superheated vapor (C). The Compressor receives this flow at the suction line (D), and compresses it

into a high temperature, high pressure superheated vapor, which is discharged from the Compressor (E) and flows through the reversing valve into the Water

Heat Exchanger (Condenser). The heat carried by the flow is then released to the pool water. At the same time, the high temperature, high-pressure super-

heated vapor is then condensed back to high-pressure sub cooled liquid (A), which completes the cycle. The water, which is being forced through the Water

Heat Exchanger (Condenser) by the pool pump, is thus heated as it passes through.

HEAT PUMP PROTECTION FEATURES: These heat pumps are equipped with safeguards that will stop heater operation to protect the unit in case of the follow-

ing events:

•

Excessively high refrigerant pressure

•

Excessively high water temperature

•

Loss of refrigerant

Interface Overview

LED Display

DOWN - Press this key

to select the downward

option or decrease the