Checking the system’s function – Proheat A4 User Manual
Page 31
PROHEAT AIR A2/A4 INSTALLATION MANUAL
3-3
3.1.8
3.1.9
START UP SEQUENCE
Normal
Operation
Shut
Down
Sequence
Pre-Check
Pre-Heat
Fuel &
Fan
Ignition
2nd
Attempt
Pre-Heat
2nd
Attempt
Fuel & Fan
2nd
Attempt
Ignition
Fan
On
Off
On
On
Off
On
On
On
On
Glow Plug
Off
On
On
On
On
On
On
Off
Off
Fuel Pump
Off
Off
On
On
Off
On
On
On
Off
Elapsed
Time
1 - 3 sec.
30 sec.
90 sec.
30 sec.
90 sec.
DCP
Controlled
360 sec.
If Required
Checking the system’s function
Ventilation:
Press the FAN button and check function
• Check for running fan noise.
• Increase and decrease the FAN RPM using the Left and Right buttons
and check the air flow.
• Check for restriction on the inlet and outlet air vents.
• Turn the FAN OFF by pressing the FAN button.
Heating:
Press the HEAT button and check the heater function
• Ensure the heater cycles through the entire heating sequence (refer to
section 4.0).
• Check for proper air flow to the combustion inlet and exhaust outlet.
• Using the increase and decrease buttons, check the heaters power.
• Measure for difference of temperature between the inlet and outlet vents.
• Turn the heater OFF by pressing the HEAT button.
Set the heater for the customer applications such as:
• Temperature sensor selecting
• Heating Mode
Figure 28. Sequence of Operation.