Hoval modular boilers
Hoval’s TopGas Cascade modular gas-fired condensing boiler systems combine design flexibility with exceptional ease of installation. They are supplied as a kit that includes boilers, LTHW and gas pipework header(s), interconnecting flexible LTHW and gas pipework, pumps and valves.
There are three outputs (45, 60 and 80 kW, based on flow/return temperatures of 40/30°C), each of which can be combined to give outputs from 90 to 480 kW.
Available combinations are two to six boilers wall hung and in line, and three to six boilers back to back. All combinations are available with Hoval’s TopTronic cascade control package.
Pre-insulated LTHW pipework, valves and pumps, along with flexible gas TracPipe and a choice of an optional low-loss header or hydraulic de-aerator/separator are supplied, together with a modular framework for assembly on site. Wall-hung options come complete with wall brackets to ensure correct spacing for ease of connection. All flow and return pipework and gas connections are clearly labelled.
TopGas boilers deliver net efficiencies of up to 109.4%, with boiler turndown of up to 4.7:1 and NOx levels as low as 18 mg/kWh. These boilers also operate with extremely low electrical consumption and low noise levels.