Controls Configuration & Adjustments...

Water Flow (Pressure) Switch Adjustment

Occasionally, plumbing system design features will create a situation whereas the heater will abnor- mally cycle on the water flow circuit. This situation will be evident if the circulator pump is operating, the filter is clean, and all water valves are set to flow water through the heater– but the error code: “FLO” remains displayed (or displays intermittently). In these rare instances where the factory water pressure switch (WPS) setting will not satisfy site conditions, a WPS adjustment, to enable normal heater operation, is possible.

WARNING !

Failure to heed the following may result in permanent injury

or death.

 

 

WPS adjustment procedure to be performed by experienced service personnel only; procedure is NOT a homeowner-based task, and must not be attempted by individuals lacking adequate electrical and mechanical experience. BEWARE: ROTATING FAN PROP HAZARD: fan may start during water switch adjustment. Keep hands clear of fan blade at all times.

Locate Water Pressure Switch and Identify Type:

1. Before proceeding with switch adjustment, be absolutely certain the heater is receiving correct water flow. Leave circulation pump operating during water pressure switch (WPS) adjustment process.

2.Remove heater front cover and locate the water pressure switch. The switch will be found attached outside of the electrical enclosure, at lower edge; exact location will vary by heater model (see photo P-1, on following page).

3.AquaCal heat pumps may come equipped with either of two (2) water pressure switches: “Len Gordon” or “TecMark” brand (see photos P-2 and P-3, on following page, to determine which brand pressure switch is installed). The adjustment procedures differ slightly between the two brands.

To Adjust a “Len Gordon” Switch:

1.Locate the black, rectangular plastic tab, located on the forward-facing side of the switch (reference P-2 on page following). The black rectangle is a wheel lock tab; slide the tab fully LEFT to unlock the adjustment wheel.

2.With water pump operating, and electrical power supplied to the heater, slowly rotate the top of the adjustment wheel TOWARDS you until the FLO code (just) disappears. WARNING: watch for rotating fan blade; depending upon the state of the control circuit time delay, the heater may start simultaneous with the WPS adjustment.

3.Once the adjustment has been completed, slide the wheel locking tab fully back to the right- hand, locked position.

To Adjust a “TecMark” Switch:

1.(Reference photo P-3 on page following.) TecMark switches do not have an adjustment wheel lock.

2.With water pump operating, and electrical power supplied to the heater, slowly rotate the top of the adjustment wheel AWAY from you until the until the FLO code (just) disappears. WARNING: watch for rotating fan blade; depending upon the state of the control circuit time delay, the heater may start simultaneous with the WPS adjustment.

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Aquacal 121, 101, 156, 110, 135, 111 Water Flow Pressure Switch Adjustment, Locate Water Pressure Switch and Identify Type
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121, 111, 101, 135, 110 specifications

Aquacal is a well-known brand in the field of heating and cooling solutions, particularly recognized for its advanced heat pump technology dedicated to pool heating. The Aquacal models 156, 110, 135, and 101,111, offer a range of features and technologies tailored to meet diverse customer needs, ensuring that pools remain at a comfortable temperature regardless of the weather outside.

One of the standout features of Aquacal heat pumps is their energy efficiency. These models are designed to operate using renewable energy, extracting heat from the air, which significantly reduces operational costs compared to traditional gas heaters. The Environmental Protection Agency (EPA) endorses heat pumps, making them an eco-friendly choice for pool heating.

Equipped with advanced digital controls, Aquacal units allow users to easily monitor and adjust settings for optimal performance. The user-friendly interface includes features such as programmable timers, which enable stakeholders to set heating schedules according to their usage patterns, providing both convenience and energy savings. The models are also designed with quiet operation in mind, featuring components that minimize noise, allowing for a peaceful poolside experience.

The Aquacal 156, 110, 135, and 101,111 models are built to withstand various weather conditions, featuring durable casings and components that resist corrosion. This durability is crucial for outdoor installations, ensuring that the units have a long service life with minimal maintenance.

Another key characteristic of these heat pumps is their capacity to function effectively in a wide range of temperatures. This adaptability allows them to provide consistent heating performance even during cooler weather conditions, ensuring that users can enjoy their pools year-round.

Furthermore, Aquacal heat pumps are designed for ease of installation, often fitting into existing plumbing setups without significant modifications. This feature makes them an attractive option for both new pool installations and retrofitting existing systems.

In conclusion, the Aquacal 156, 110, 135, and 101,111 models represent a versatile and energy-efficient choice for pool heating. With their advanced technologies, user-friendly features, and durable construction, they cater to a variety of preferences, making them a popular selection among pool owners looking to maintain comfortable swimming conditions while remaining mindful of energy consumption and costs.
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