Dedicated Outdoor Air System (Heat Recovery & Fresh Air)

●  All model sizes share a common, compact cabinet in a single footprint for on-site flexibility.

●  Installation time and costs are reduced by easy power and control wiring. All units are factory-wired, charged and tested prior to shipment.

●  Delivers clean, dehumidified outside air in all weather and climate conditions.

●  Compressor is internally protected against high pressure and temperature.

●  Units are engineered and built to be among the quietest models.

●  Up to 100% outside air.

●  Elliptic tube high efficiency heat exchanger and without air stripping, the heat transfer can be maximized.

●  Convertible airflow design means no panel cutting is required, and no accessory panel is necessary.

●  Heat exchangers are corrosion-resistant, with aluminized steel tubular construction for durability and long service life.

●  Post-purge induced draft combustion exhausts combustion products from the heat exchanger to prolong heat exchanger life.

●  Secured service access ports are protected, externally mounted and reusable on both high and low lines.

●  Complete line of field-installed accessories, including propane and high altitude conversion kits, economizers, single- and dual-enthalpy sensors and more.

● Heat exchangers are built in and with filter design, corrosion-resistant, with aluminized steel tubular construction for durability and long service life.

●  Evaporator coils are constructed with grooved copper tubes and enhanced for construction to improve heat transfer.

●  Condenser coils are constructed of MicroChannel aluminum tubing and aluminum fins for durability and long-lasting efficient operation.

●  Control terminal board facilitating simple safety circuit troubleshooting and simplified control box arrangement.

●  Access panels with easy grip handles and tool-less filter access door.

● Strong heat capacity in winter,because of the use of exhaust heat recovery, the heat system is guaranteed at -12.5℃, supply air temperature can be up to 20.5℃.

●  Belt drive evaporator-fan motor and pulley combinations available on all three phase models to meet any application.

● Dependable time/temperature defrost board and logic.

● The unit adopts centrifugal fan as the exhaust fan, low noise and high efficiency.

● No cross contamination- No cross contamination- because it is completely separate structure, unit is absolutely no cross contamination, and other heat recovery unit, plate heatexchanger and heat recovery wheel, due to the influence of structure will produce cross-contamination, so unit is particularly suitable for hospital use.

●  Flexible Design- The DOAS unit and its associated ductwork are typically sized for only the minimum ventilation airflow required, in turn requiring less ceiling plenum height and allowing for more usable space inside the building. Reconfiguring a zone often requires moving only the downstream flex duct and supply-air diffusers; the sensible-cooling terminal units and water piping often do not need to move. And, the sensible-cooling terminal units can be equipped with either a hot-water coil or electric heater, if necessary.

●  Comfortable Spaces- Each terminal unit is controlled by a zone temperature sensor, and contains its own cooling coil and (optionally) either a hot-water coil or electric heater, allowing each zone to receive cooling or heating as needed. Dehumidification is provided by the centralized, DOAS unit; and, when equipped with a humidity sensor, the terminal unit actively adjusts dehumidified airflow from the DOAS unit to limit space humidity, ensuring a comfortable environment..

●  Low Maintenance- No condensation occurs at the zone-level terminal units, meaning no drain pans to clean and no condensate drain traps and piping to install and maintain. And, since the cooling coil in each terminal unit operates dry, an optional upstream filter is available, but not required.

● Unique product structure design- In Summer, the cool condenser is cooled by cold return air in summer, and there is no overheating phenomenon; In Winter, the evaporator is heated through the hot return air, without the risk of frost crack and frosting at low temperature.