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Kaden Installer's Manual
Ducted Gas Heaters
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Inadequate fan speed or thermistor set point.
Systems that have zone damper motors that are being operated from the Kaden Networker (Adaptive Zoning) will
require the zone minimum fan speed to be set to suit the duct system. This ensures optimum performance from
the Adaptive Zoning functions within the heater. To do this:
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Go to the Kaden Networker and close all but one zone. If the system does not have a common zone, leave only
the zone key that operates the least number of outlets turned ON (ensure this zone does not have less than the
minimum number of outlets required for the heater size). If the system has a common zone then all zone keys
can be turned OFF.
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Adjust the fan speed setting to provide the required amount of air from the remaining open outlets. Ensure that
the temperature rise does not exceed 45º C. Do not adjust the thermistor set temperature while setting up the
fan speed.
9.3.3 Final Checks
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Check the temperature rise through the heater. The temperature of the warm air at any outlet should not be
more than 45º C above the return air temperature. If it is, the heater will be approaching an overheat situation.
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Check that the fan continues to run while the gas burner is operating.
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Check that the fan operates in fan only mode, by operating the Kaden Networker in fan only mode (see Owners
Manual).
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Ensure the required gas inlet pressure is supplied at all times during the heater’s operation (this should be with
all other gas appliances operating at the same time and at their full capacity).
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Go back to the wall control and press the ON/OFF button to turn the heater off.
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Ensure that the burners and fan turn off, then turn off the gas supply at the supply tap and remove the manometer
hose from the inlet test point on the gas valve.
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Tighten the inlet test point screw, turn on the gas supply at the supply tap and test for leaks using a soapy water
solution or leak detector spray.
•
Replace the heater’s roof, and then proceed to instruct the customer on the correct operation of the system and
assist the customer with filling in the Warranty Card details enclosed in the Owner’s Manual.
•
Issue any required documentation to the relevant people/authorities in regard to the installation of the heater, the
gas connection and power supply. For example, a Certificate of Compliance and Certificate of Electrical Safety.
9.4 FAULT CODE IDENTIFICATION ON HEATER PCB
If the heater fails to start the fault may display on the heater control board with a dual L.E.D flash sequence. The
two L.E.D’s that display the fault code are ‘PRIMARY STATUS L.E.D 1’ and ‘PRIMARY STATUS L.E.D 2’. Refer to
Diagram 22 for location of these status L.E.D’s in reference to the ‘CLEAR’ and ‘DEFAULT’ buttons on the heater
control board cover.
9.4.1 NG-3 L.E.D Identification
Diagram 22
PRIMARY STATUS L.E.D 1
PRIMARY STATUS L.E.D 2
SECONDARY
STATUS L.E.D
CLEAR DEF
AUL
TS
Summary of Contents for KEX Series
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