Water Flow Pressure Switch Adjustment | Aquacal 155, 120 instruction

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
WARNING !	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.

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.