Form No. 43539470
Oct 2019 A
–16–
11.2)
VARIBLE HEAT OUTPUT ADJUSTMENT
The heater is equipped with a manual ball valve. This manual ball valve can be adjusted for
variable heat output by rotating the handle in the positions shown.
NOTE: The manual ball valve is not a gas shut-off valve.
12.0)
VENTILATION
FOR YOUR SAFETY: Exhaust fans must be operating on an appropriate cycle when heating the building to avoid
high concentrations of carbon monoxide and water vapor.
The temptation, particularly during the winter months, is to close up the heated space to conserve heat and save
money. This must be resisted, particularly during the heating up period prior to the arrival of the life stock,
because the lack of ventilation can restrict the required amount of combustion air for the air heaters causing them
to burn improperly and produce levels of carbon monoxide which could be harmful to people and the life stock.
Carbon Monoxide is an odorless and poisonous gas. Extended exposure to carbon
monoxide may lead to death. Early signs of carbon monoxide poisoning resemble the flu, including headaches,
dizziness and/or nausea. If you experience these signs, GE T FRE SH AIR IMME DIATE LY. Have the air
heater(s) serviced as soon as possible and check the ventilation in the heated space.
The heater requires a minimum of 10m
3
/hr per kW heat input of outside air for ventilation. The ventilation
requirements and calculation methods for unflued appliances are set out in the European Standards EN 13410
(latest edition) and must be applied. This requirement means that a total of 733 m
3/
h is required per air heater.
Ventilation requirements may vary depending on other equipment that may be located in the building requiring
ventilation. All ventilation requirements should be addressed before sizing the necessary gravity or mechanical
means to accomplish this ventilation.
While ventilation is necessary for proper air heater and proper growing conditions for the life stock, excessive
ventilation can result in high fuel consumption. Adjust the ventilation as necessary for optimum performance of
the heaters and growing conditions for the life stock.