Anderson ANX70 Series Manuel d'utilisation - Page 10

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10.7 Prepare for adjustment

After the installation of the burner system components is complete, the following steps

should be followed in order to prepare for adjustment:

– Set the air flow switch so that it drops out at 50% of the maximum pressure of the

combustion air blower.

– Set the low gas pressure switch at 50% below the gas pressure measured at the inlet

to the main gas valve train.

– Set the high gas pressure switch at 50% above the gas pressure measured at the

inlet to the main gas valve train.

– Try to ignite the burner before the purge and other timers have finished their cycles.

Make sure that the flame monitoring system indicates a flame failure.

– Trip out the pressure switches and other limit interlocks. Make sure that the main

gas valve train closes.

– If the simulated limit condition or the simulated flame fault cannot be responded at

the specified fault response time, the fuel system needs to be turned off to correct

the existing problems.

Special attention:

The ANX70 Series burners, described herein, are designed to mix fuel with air. All fuel

burning devices will cause fires and explosions if improperly applied, installed, adjusted,

controlled, or maintained. Do not bypass any safety feature, never try to light a burner

if it shows signs of damage or malfunction.

If adjusting the burner for the first time, must follow these steps:

Reset the system: Start combustion blower with valve fully open, close all the

automatic gas valves and manual gas cocks. Pay more attention to rotate direction

of blower.

Set the system to high fire, but DO NOT ignite the burner(s). Use the datasheet

from the appropriate ANX70 burner table to set the differential air pressure

needed at high fire.

Set the system to low fire air. Drive to low fire position. Measure pressure with

manometer set to 0.5 mbar. This is the initial setting only. Further adjustment may

be required.

Make sure all the settings are still the same after you cycle the system several times

between high and low fire.

Burner ignition: open all the manual shut off valves, make sure air blower is

running, automatic control valve is driven to low fire by flame controller, start

spark ignition, gas safety shut off valves open and flame on, flame signal feedback

to controller, adjust gas and combustion pressure by the opening gas/air control

valve till strong flame signal achieved.

Anderson Thermal Soluions（Suzhou）Co. Ltd.

Anderson Thermal Solutions – ANX70 Burner Operation Manual