Industrial Space Heating
Greenheck’s space heating systems are designed to heat large spaces as comfortably and economically as possible. High-efficiency direct gas-fired burners promote excellent space comfort and low operating cost by utilizing burners that are 92% efficient and capable of up to 30:1 turndown. The Greenheck space heating line includes the Greenheat® 100% outdoor air, Greenheat® 50/50 fixed recirculation, and 80/20 recirculation systems. These systems provide numerous options to meet a variety of needs for any space heating application.
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Greenheat® 100% Outdoor Air
The Greenheat 100% outdoor air systems provide a great option for low insulated spaces with high infiltration rates such as warehouses and distribution centers. These units cycle the blower and burner on a call for heat from the space, supplying air at a high velocity and high discharge temperatures (120-160°F).
Greenheat® 50/50 Recirculation
The Greenheat 50/50 recirculation systems incorporate a fixed mixing box to provide a 50/50 mixture of fresh outside air and return air. These units cycle the blower and burner on a call for heat from the space, supplying air at a high velocity and high discharge temperatures (140°). The 50/50 system combines the benefits seen from an 80/20 and 100% outdoor air system. These units are ideal for medium-to-well insulated spaces where not as much outside air is needed to combat infiltration loads.
The 80/20 recirculation system is a hybrid make-up air system. Supply air is a variable mixture of return air and fresh outdoor air. Outdoor air volumes vary from 20% to 100% of total airflow, often configured to respond to building pressure fluctuations. The 80/20 units are excellent for facilities with mechanical exhaust systems, especially when the exhaust volume is variable. The supply fan will run continuously to respond to varying exhaust volumes, and the burner will modulate to satisfy the remote space set point. Discharge temperatures typically range from 70-140°F.
FAQs for Make-Up Air Units