Section 9, Operation
9-4 Installation Manual for
Oasis® Zephyr™ HW
Heating System
combustion fan will operate for an additional two minutes to purge
the system.
If a zone thermostat or domestic water aquastat (temperature
sensor) is not satisfied, the circulating pump will continue to
operate. If the requirement for heat cannot be satisfied by the
residual heat in the system, the burner will restart and cycle until
the demand for heat is satisfied. At this point the heater will cycle
OFF, the combustion fan will continue to run to purge the system
for 2 minutes; the circulating pump will also run until the
combustion fan stops.
9.4 Main Control Board Operation
Once the heater is operating normally, you must check the safety
functions of the main board. To ensure these functions work
properly, place a short piece of hose or a tube over the sintered
bronze compressor inlet filter. Put your finger over the end of the
hose/tube to stop the flow of air into the compressor. This will stop
the flow of fuel through the nozzle and the burner will flame-out. If
you continue to block the air inlet, the heater will try to restart two
times; failing to do so, it will shut down, stopping the compressor
and fuel pump. The control board will display a code 7 (flame-out).
This verifies proper operation of the safety functions of the main
control board. Reset the fault by touching the remote Burner ON
button to restart the heater. After this reset the heater will continue
with normal operation.
9.5 Stopping the Heater (for Seasonal
Purposes)
NEVER shut off the power to the heater using the circuit
breaker or a master switch, or disconnect the battery while
the heater is running. Doing so will cause serious damage to
the Heater, which will not be covered under warranty.
