DUALAIR® HEATING AND COOLING UNITS INSTALLATION OPERATION AND SERVICE MANUAL
Pressure Switch
The pressure switch is factory
11.6 Turning Off the DualAir® Unit
Set the external controls to the off position and the main burner will stop.
The fans will run until they are stopped automatically by the fan thermostat.
Do not use Electrical Isolator for control of heater. Electrical Isolator will switch off the fan. Heat exchanger could be damaged. Warranty will not cover damage to the heat exchanger if operated improperly.
11.7 External Controls
External Controls may include time switch, room thermostat and frost thermostat. Operate each control to ensure that they function correctly. Set the time switch (if fitted) and room thermostat to the users’ requirements. Operate the external controls and ensure that the installed cooling stages operate correctly as described on Page 17, Section 10.3.
11.8 Complete the Commissioning
Ensure that all covers are fitted correctly and all test points are properly sealed.
11.9 Instruction to the User
Explain the controls of the DualAir® unit to the user including how to turn it on and off, using the controls fitted on site.
Give this manual to the user.
Ensure that the user is shown and understands the importance of maintaining clearances to combustibles and the user instructions on Page 25, Section 12 through Page 26, Section 12.6 and all warnings defined in this manual.
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