Set Appliance State:
| Isolate Mains Power to appliance as per TOPs P4 |
Refer to customers copy, Installation & Servicing Instructions Section 5.4, make a note of the recorded differential pressure reading that the installer should have carried out when commissioning the appliance, if this information is not available then a reading of 1.3Mb shall be used as a base line
The following check must be carried out with the front case fitted
Attach FGA across the positive (F+) and negative (A-) pressure connections
The following check must be carried out with the front case fitted
Attach FGA across the positive (F+) and negative (A-) pressure connections
| WARNING! - Mains voltage is expected during test follow TOPs P4 live testing procedure |
Observation:
Set the boiler to stand by, then press and hold the reset and stand by buttons simultaneously for 15 seconds. The radiator / tap symbols (see image) and the number 55 will flash on the display indicating that the fan is running at a fixed speed of 5500 rpm.
Observe the pressure differential reading and compare it to the recorded value if known or base line value if not, If the pressure reading has reduced by 40% or more, i.e. If the measured value is less than 0.6 x the recorded value if known or base line value if not, then choose "Differential Pressure Incorrect" from below.
Note.
1. The boiler does not fire during this test.
2. The air flow check function will operate for 15 minutes, alternatively disconnect the boiler electrical supply to exit the function early.
Observe the pressure differential reading and compare it to the recorded value if known or base line value if not, If the pressure reading has reduced by 40% or more, i.e. If the measured value is less than 0.6 x the recorded value if known or base line value if not, then choose "Differential Pressure Incorrect" from below.
Note.
1. The boiler does not fire during this test.
2. The air flow check function will operate for 15 minutes, alternatively disconnect the boiler electrical supply to exit the function early.
Isolate as per TOPs P4
and refit as necessary