COMBAT^® Direct-Fired Heating and Pressurisation Systems

DF-Series

Help improve indoor air quality and provide air comfort.

Untempered outside air can infiltrate into buildings through openings such as gaps around windows and doors and invisible cracks between building materials. The primary cause of this uncontrolled infiltration is a negative interior pressure created by process exhaust, temperature differential and wind currents. When using a COMBAT^® air handler, building pressurisation “fights back” against the infiltration. When a building is pressurised, cracks (and even exhaust fans) become allies of the heating systems by helping the heated air in the building move to the building’s extremities.

Pressurising the building with the use of an air handler does not change the total amount of outdoor air introduced into the building, but rather changes the manner in which the air enters the building. Much of the air that was previously introduced by infiltration now enters the building through the air handler. The building owner, in a controlled manner, can treat the incoming air with heating, filtration or any other required conditioning. One point of infiltration (the air handler) with multiple points of exfiltration (building cracks, doors, exhaust) is the basis for greatly increased comfort, improved air distribution through the building space and reduced heating costs.

In addition to the broad range of high quality gas-fired, warm air heating products Roberts-Gordon can address many heating needs. Additional product selection includes: make up air units, direct-fired systems, indirect-fired systems, roof top units, air turnover units, warm air (forced air) unit heaters and low-intensity radiant heaters (a.k.a. tube, stick, unitary heaters).