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10.1.3 Setting the Fan Speed
•
KUN3, KEX3 & KEX4 Heaters are fitted with a single speed room fan with High, Medium and Low fan speed
options. Refer to Section 4.0 to change the desired fan speed. Set the fan speed to achieve, as close as
possible, a temperature rise at the nearest outlet to the heater above the inlet (Return Air) temperature for the
type of system as follows:
•
Floor Outlet System: 35º to 40º C rise (e.g. Return Air temp at 20º C plus 35º C rise equals a 55º C outlet
temperature).
•
Ceiling or High Level outlet System: 25º to 30º C rise. If the outlet air is hotter than recommended then a higher
fan speed should be selected to reduce the outlet temperature. If it is lower, then reduce the fan speed.
•
For changeovers, commission the new unit to best replicate the original units performance.
The temperature of the warm air at any outlet should not be more than 45º C above the return air
temperature.
IMPORTANT
10.1.4 Final Checks
Confirm:
1.
Minimum flowing gas pressure is 1.1 kPa (NG units) with all other gas appliances in operation.
2.
The burner pressure is as indicated on the appliance data label.
3.
The temperature of the warm air at any outlet is not more than 45º C above the return air temperature.
4.
The fan continues to run while the burners are operating.
Once Confirmed:
•
Turn the heater OFF at the wall control.
•
Ensure that the burners and fan turn OFF, then turn OFF the gas supply at the supply tap and remove the
manometer hose and fitting from the pressure test point.
•
Replace and tighten the test point screw, turn ON the gas supply at the supply tap, start up the heater again and
test for leaks using a soapy water solution or a leak detector spray.
•
Replace controls access panel, then proceed to instruct the customer on correct operation of the system and
assist the customer to fill in the Warranty Card details.
•
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.
Ensure to advise the customer to visit www.metaflex.com.au/kaden and complete the online
warranty registration for their appliance.
IMPORTANT
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