The service book IV / ALFA 17 03-9940.186
Tester underpressure of the blower WIND
INSTRUCTIONS:
:
1. Test the heater in its horizontal position with combustion air orifice pointing down vertically.
2. It is necessary to remove the exhaust pipe distribution of heating and air intake silencer from the
heater. In the case that the exhaust pipe cannot be removed, the vacuum level is of 1% less (at
the length of the exhaust pipe 1 m).
3. Measurement is taken in ventilation mode and maximum speed (4410 RPM). Time to stabilize the
pressure value is 10 minutes.
4. Connect the test pipe piece provided with a branch for scanning static pressure, to the combustion
air intake socket. Test pipe piece have to be in direction of heater’s axes (see picture). Disconnect
the hose (length shall be 1m) to the pressure gauge just close before reading the values and
calibrate the gauge by pressing its right button. Then connect the hose again and read the value
after about.30s.
5. The underpressure in the test pipe should be 650 – 850 [Pa].
6. The tester must be calibrated 1x per year at an authorized laboratory or directly in BRANO a.s.
LABEL WITH LIMITING
UNDERPRESSURE VALUES
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