Growers consider the gas-fired, warm air unit heater to be a compact stand alone, inexpensive and acceptable method of heating. They are often placed at the gable end of the greenhouse with the heated air directed toward the middle of the house. Louvers on the unit heater can be positioned to direct some of the heated air downward to try to reduce immediate heat stratification. Perforated polyethylene tubes for air distribution can enhance the uniformity of air heating. The warm air heater is positioned to direct the heated air into a powerful fan that pushes the heated air through the inflated polyethylene tube. The placement of the holes in the tube direct the heated air downward and across the house, improving heat distribution.

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Installation Code and Annual Inspections:
All installations and service of ROBERTS GORDON^® equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Roberts-Gordon and conform to all requirements set forth in the ROBERTS GORDON^® manuals and all applicable governmental authorities pertaining to the installation, service and operation of the equipment. To help facilitate optimum performance and safety, Roberts-Gordon recommends that a qualified contractor annually inspect your ROBERTS GORDON^® equipment and perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon.

Further Information: Applications, engineering and detailed guidance on systems design, installation and equipment performance is available through ROBERTS GORDON^® representatives. Please contact us for any further information you may require, including the Installation, Operation and Service Manual.
These products are not for residential use.
This document is intended to assist licensed professionals in the exercise of their professional judgement.