Lindab PC 410 - Option 4 PA Test

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6.6 Option “4 PA Test” The 4 Pa Pressure Test is a simple control of the underpres-
sure limit 4 Pa for the confirmation of a sufficient combustion
air supply.
In a closed room or in connected rooms, simultaneous opera-
tion of non-roomsealed heating appliances and ventilation
and air conditioning systems can cause dangerous under
pressure.
With the 4 Pa Pressure Test the underpressure value can be
controlled. The readings are plotted in a graph during about 4
minutes, and can be saved and print out afterwards.
Fig. 37: PC 410 with capillary hoses
NOTE!
For the 4 Pa Test two capillary hoses must be connected to
the PC 410.
The 4-Pa Test measures the pressure difference between
the room where the fireplace is installed and another room
which is not connected (e.g. outside air, stairway etc.). Before
starting the measurement, two flexible capillary hoses must
be connected (see accessories). The pressure sensor of the
meter will measure the pressure difference.
Before starting the measurement:
1. Select 4 Pa Test in the main menu of the PC 410. The
current differential pressure reading will be displayed.
2. Connect the capillary hose leading to the reference point
(stairway or outside air) to the negative pressure socket
(Fig. 1, part 10).
3. Connect the second capillary hose to the positive pres-
sure socket (Fig. 1, part 9). The second hose stays in the
room where the fireplace is installed. With this hose the
march of pressure will be recorded.
Underpressure in the fireplace room in relation to the pressure
at the reference point will lead to a negative differential pres-
sure.
Fig. 38: Initial display of the 4 Pa test
Capillary
hose inside
pressure
Capillary
hose
outside
pressure