ADplus: Instantaneous Hot Water for Commercial Projects

ADplus, from commercial hot water specialist Adveco, is a range of high-power gas-fired condensing water heaters. The three variants with 70 kW, 115 kW and 140 kW rated heat output each feature an integrated 120-litre stainless steel water storage tank instantly providing continuous and on-demand domestic hot water (DHW).

Heat is provided by the patented Fecralloy premix burner fed by a consistent balanced air/gas ratio at each point of turndown. The high modulation ratio results in high combustion efficiency with ultra-low NOX (Class 6 appliance at 27 mg/kWh) and CO emissions (19ppm). A built-in flue back preventer on the combustion circuit prevents possible flue gas recirculation between different exchangers. The 115kW and 140kW ADplus variants offer two high-quality heat exchangers. Constructed from a corrosive-resistant continuous run of AISI 316Ti titanium-stabilised stainless steel, these provide balanced highly efficient operation and built-in redundancy.

Designed as a high capacity and reliable method for delivering instantaneous hot water to a commercial building, the tough, stainless steel 120-litre storage tank is provided with electronic anodic protection and high-quality polyurethane thermal insulation. This enables the ADplus to serve as a semi-storage system, providing always available and instantaneous supply with quick recovery times for large-scale continuous provision of DHW. For smaller on-demand needs, ADplus heats what is necessary, with no ignition for smaller withdrawals providing considerable energy savings. When heat is required, the condensing technology provides up to 30% savings in fuel consumption.

To reduce acidity build-up caused by the condensing process, the ADplus is equipped with a condensate acidity neutraliser, specifically sized to restore tolerable pH values. With the anti-corrosive construction, ADplus can be used with soft and softened water. For harder water, the recirculating pump regulates the correct water flow according to inlet water hardness helping to prevent the formation of limescale on the heat exchanger surface, ensuring high performance throughout its life cycle.

The ADplus boasts a compact, floor-standing arrangement designed to pass through a standard 65cm wide door for easy installation without need for racking and just 10cm clearance between units. Front access to all inner components allows for quick, easy maintenance. The integrated cascade controller supports full temperature control and self-check maintenance functions for up to 8 joined units. The controller accommodates 0-10 input, MODBUS communication, and alarm output for seamless BMS integration.

With minimal NOX and CO emissions, the ADplus range is an eco-friendly way to serve your building’s DHW system. The rugged construction, supported by Adveco’s in-house warranty engineers, provides real peace of mind for your investment with operational longevity and full compliance with the latest building regulations, making it perfect for refurbishment of existing gas-fired systems and new projects seeking lower cost system redundancy for large-scale heat pump based applications.

www.adveco.co

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