REFRIGERANT SWITCH: A Greenheck DGX-P116 Makeup Air Unit. Greenheck Fan Corp. has begun offering direct gas-fired makeup air units with the lower-GWP refrigerant R-454B. (Courtesy of Greenheck Fan ...
Designs of mechanical systems for commercial foodservice facilities such as restaurants must comply with code requirements for outdoor air, as well as providing makeup air to compensate for typically ...
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