Operation
MANUAL - ES700B
Rev November 2019
Copyright © 2019 Equipment Source Inc.
Page 16 of 30
Connect an external thermostat (see wiring diagram) to control building heat.
Increase the outlet temperature by constricting the outlet airflow or changing the fan belt pulleys.
The outlet temperature is limited to 220F and undesirable burner cycling will occur if the ducts are
excessively restricted. Increasing the outlet temperature by reducing the air flow will never increase
the heat output.
Increase or decrease the outlet temperature and heat output by adjusting the firing rate (refer to
Section
Adjusting the Firing Rate)
4.8
Shutdown
CAUTION
The following shutdown procedure must be observed to prevent damage to the burner.
Shutdown procedure:
1. Shutdown burner using the control switch
2. Let the generator and fan run for 5 minutes
3. Turn off fan
4. Turn off generator
4.9
Adjusting the Firing Rate
The firing rate can be adjusted by changing the nozzle size or adjusting the fuel pressure. Refer to the
instruction manual supplied for the Carlin 301CRD oil burner the following Nozzle Capacity Chart when
making adjustments to the firing rate and airflow. Changing the firing rate may require adjustments to
the air flow.
4.9.1
Standard Firing Rate
A new ES700B series heater comes equipped with a 3.5 GPH nozzle. The fuel pressure on a new machine
is tuned to 150 PSI resulting in a 4.3 GPH firing rate.
4.9.2
Maximum Firing Rate
Nozzles rated up to 4.5 GPH @ 100 PSI and pressures up to 150 PSI can be safely used if additional heat
is required or the outlet air temperature is low. Low outlet air temperature can also be increased by
constricting the airflow in the outlet ducts or changing the belt pulleys to reduce the fan speed.
4.9.3
When to Reduce the Firing Rate
The firing rate should be reduced if the burner cycles during normal operation as a result of excessive
outlet temperature. Excessive burner cycling will shorten the life of the heat exchanger. The firing rate
can be reduced by adjusting the fuel pressure or using a smaller nozzle. The minimum nozzle size is
3.0 GPH.
Consider shortening the duct length or increasing the size of the ducts before reducing the firing rate.