Dantherm HCV 3 Installation And Service Manual page 53

How to balance the unit,
Procedure,
continued
Step
continued
5 Connect the pressure manometer to
pressure adapter P1 and P2 and meas-
ure the pressure difference on the supply
air side over the heat exchanger.
6 Balance the nominal air flow rate on the
supply air side by adjusting the potenti-
ometer for the supply fan until the pres-
sure difference determined on the graph
is achieved. The potentiometers are
placed on the back of the control panel.
Wait approximately two minutes before
the next adjustment of potentiometers, in
order to let the unit stabilise the air flows.
Strong wind against the building
might affect balancing the unit.
7 Connect the pressure manometer to
pressure adapter P3 and P4 and meas-
ure the pressure loss on the exhaust air
side over the heat exchanger.
Action
P2
P1
P3
P4
Continued overleaf
51