The CHDW duct cooler-heater is designed for domestic ventilation systems and allows the supply air to be cooled in summer and reheated in winter. The casing is made of galvanised steel insulated with 24 mm thick rubber matting. Inside the casing is a 6-row aluminium heat exchanger and an integrated aluminium condensate tray. The design provides for easy access to the exchanger, which can be removed for maintenance purposes or to change the mounting side (left/right). The water coil and stub pipes are made from copper; the heat exchanger fins are made from aluminium. The tube diameters of the exchanger are ½" which allows the use of standard hydraulic fittings.
The connection pipe diameters are sized according to the size of the cooler-heater to minimise pressure drops in the system. The unit has spigot connections with EPDM rubber seals. It can be mounted on feet or suspended from the ceiling on special slings.