Operation
MANUAL - ES700B
Rev November 2019
Copyright © 2019 Equipment Source Inc.
Page 13 of 30
4
Operation
WARNING
Always install a CO gas monitor in enclosed environments that are heated with oil burning force air
heaters.
CAUTION
The correct shutdown procedure must be followed to prevent damage to the burner assembly.
Figure 4. Control panel
4.1
Duct Selection
4.1.1
General Guidelines
The ES700B heater is an outdoor heater designed to safely heat enclosures using flexible duct
connections. For efficient operation, keep duct lengths as short as possible. Excessive duct lengths will
reduce air flow in the heat exchanger and cause the burner to cycle to control the outlet temperature.
Excessive burner cycling shortens the life of the heat exchanger and should be avoided. Burner cycling
can be controlled by reducing duct length, increasing the duct diameter, or adjusting the burn rate (see
Section 4.9).
An inlet duct is not required for normal operation. It can be used to circulate warm air back from an
enclosure for re-heating.
4.1.2
Duct Sizes
Minimum inlet duct size ............................................................20”
Minimum outlet duct size ..........................................................12”
