2�4�7 Thermistor Installation Ku4 & Ku5 - Kaden KU5 Installer Manual

2.4.7 Thermistor Installation KU4 & KU5
All KU4 and KU5 heaters are supplied with a remote thermistor assembly. The thermistor must be installed in the
supply air duct, between 1m to 3m away from the heater, but NEVER beyond the first Branch Take Off (BTO) fitting.
Where an Add-On air conditioning indoor evaporator coil is installed, the thermistor MUST BE
located in the discharge air POP of the indoor cooling coil.
NOTE
These installation practices promote more accurate supply air temperature control and optimise heater performance.
•
Ensure that there is at least 1 metre of appropriately sized ducting installed between the heater and the first BTO
fitting (or evaporator coil).
•
Drill a 20mm diameter hole through the top of the inlet end of the first BTO fitting (refer to Diagram 9) or through
the top of the evaporator coils discharge POP.
•
Carefully insert the thermistor assembly (probe end first) into this hole and secure using the self drilling screw
provided. Seal any remaining openings with duct tape.
•
Ensure that the thermistor lead is secured to timbers or duct outer casing (refer to Diagram 9) to prevent
damage.
Where the first BTO fitting is installed more than 3m away from the heater, an additional duct joiner (installer
supplied) will be required so that the thermistor assembly can be fitted correctly. Install the joiner between 1m
to 3m away from the heater ensuring that the thermistor can reach this joint. Then follow the steps above as per
normal practice.
Thermistor
Diagram 9
17