Controls Configuration & Adjustments...

Level-2 Microprocessor Programming... continued:

4.Water Sensor Calibration... continued:

C.Follow the steps 1, A through 1, D to enter the service menu. Once [dEL] is displayed, press the [POOL/SPA] key until the display shows [tSC] (Water Temperature Calibration). Using either the [UP] or [DOWN] arrow keys, calibrate the water temperature sensor by increasing or decreasing the numeric value displayed to match the measured water temperature. The controller can be adjusted to +10oF to –10oF from the nominal displayed temperature. However, offset calibrations greater than 3oF should be avoided… Such large offsets generally indicate problems with the method of water temperature measurement, a water sensor not properly inserted into the well, or other equipment issues. Do NOT attempt to mask such issues through offset calibration.

D.Once the corrected temperature is displayed, Not pressing any buttons for 15 seconds will allow the controller to save the selection and return to the normal operating mode. Pressing the {POOL/SPA] key will also save the selection and step to the next menu parameter:

[dSC] (Defrost Sensor Calibration).

5.Defrost Sensor Calibration [dSC] (Checking-Adjusting):

In the event it is suspected the defrost Sensor requires calibration, the following steps must be followed closely to ensure correct defrost operation:

A.Turn the heater OFF at the main circuit panel.

B.Remove the heater front panel to gain access to the defrost sensor location. The defrost sensor will be found strapped to the suction line in combination with the TXV bulb, or strapped and separately insulated nearby the TXV bulb. Note: if unsure of sensor location, follow–to termination–the pair of wires leading from the “FS” terminals on the controller PC board.

C.Position a clamp-on, thermocouple-type temperature sensor onto the suction line; position the clamp immediately adjacent to the defrost sensor. Connect the clamp-on thermocouple to a multimeter designed to accept the input of the clamp-on device.

D.Restart the heater, allowing the compressor to operate for at least 10-minutes; the suction line temperature should have stabilized at this point. Make note of the suction line temperature as measured by the clamp-on thermocouple probe/multimeter.

E.Follow steps 1, A through 1, D to enter the service menu. Once [dEL] is displayed, press the [POOL/SPA] key until the display shows [dSC] (Defrost Sensor Calibration). With [dSC] displayed, pressing either the [UP] or [DOWN] arrow key, once, will display the current temperature value of the defrost sensor.

F.Compare the controller’s displayed defrost sensor temperature against the reading obtained by the clamp-on device. If the temperatures are the same, or within 1oF, calibration is NOT necessary. If the temperatures differ by 2 to 3oF, calibration is necessary. The controller can be adjusted to +10oF to –10oF from the nominal displayed temperature. However, offset calibrations greater than 3oF should be avoided. Such large offsets generally indicate problems with the method of suction line temperature measurement, a defrost sensor not properly attached to the suction line, or other equipment issues. Do NOT attempt to mask such issues through offset calibration.

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Aquacal 155, 120 owner manual Water Sensor Calibration, Defrost Sensor Calibration dSC Checking-Adjusting
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120, 155 specifications

Aquacal 155,120 is a highly regarded pool heater known for its efficiency, reliability, and advanced technology. This product stands out in the competitive market of swimming pool heating solutions, making it a popular choice among pool owners and professionals alike.

One of the main features of the Aquacal 155,120 is its high-performance heat exchanger, made from durable titanium. This material ensures resistance to corrosion and enhances the longevity of the heater. The titanium heat exchanger is designed to facilitate maximum heat transfer, providing rapid warming of pool water and ensuring a consistent swimming experience.

The units are equipped with a powerful compressor that utilizes advanced inverter technology. This technology enables the heater to adjust its output according to the pool’s needs, optimizing energy consumption and reducing operational costs. The inverter-driven compressor allows the Aquacal 155,120 to operate quietly, making it ideal for residential settings where noise could be a concern.

Aquacal has designed the unit to be user-friendly, featuring an intuitive digital control panel. This control panel allows users to easily monitor and adjust the temperature settings, ensuring that the water temperature can be maintained at a comfortable level. Additionally, this feature includes programmable settings to enable automatic heating schedules, providing convenience and energy savings for pool owners.

The Aquacal 155,120 is also known for its energy efficiency. With a high coefficient of performance (COP), this heater can deliver more heat output per unit of energy consumed compared to traditional heating systems. This efficiency contributes to a lower carbon footprint, making it an environmentally friendly choice for heating pool water.

Furthermore, the unit is designed with robust insulation, which minimizes heat loss and maximizes energy retention. This insulation helps maintain the desired water temperature for longer periods, reducing the need for frequent reheating and thereby lowering energy expenses.

In summary, the Aquacal 155,120 is an outstanding choice for pool owners looking for an efficient, reliable, and technologically advanced heating solution. With its titanium heat exchanger, inverter technology, user-friendly control panel, energy efficiency, and excellent insulation, this pool heater stands out as a top contender for modern pool heating needs. Whether for leisure activities or extended swimming seasons, the Aquacal 155,120 ensures a comfortable and enjoyable swimming experience.
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