Commissioning and Operation
MultiMAXX HE
32
FläktGroup DC-2011-0142-GB 2018-05/R5 • Subject to modifications
6.2
Operation
The unit must only be operated by trained staff and all instructions specified in the cur-
rent operation manual must be followed. Activation and deactivation of the unit heater
is performed using a speed selection switch or a room thermostat or using a signal pro-
vided by an external regulation system.
If the unit heater is equipped with mixing air module, the rate of outside and recirculat-
ing air is either set manually by using a lever or an actuator, depending on the config-
uration of the mixing air module.
6.2.1 Regulation of mixed air module
Regulation of the actuator of the mixing air module is performed by a control switch in
the OSHE control cabinet (with an additional function "K" or using regulation by others).
6.2.2 Secondary air louvre
The secondary air louvre of the unit heater directs conditioned air in the controlled
space. The regulation of the secondary air louvre determines the optimal discharge
angle for air flow (fan speed) under current temperature conditions. The occupation
zone can be air conditioned in a draught-free way, at the same time formation of indoor
temperature layers can be prevented to a large extent.
– Secondary air louvres can be operated manually (refer to Fig. 6-1) or can be fitted
with an actuator to be wired to a control switch in the OSHE control cabinet.
6.2.3 Differential pressure switch for filter
The contact of the differential pressure switch closes if the pre-set pressure value is
exceeded. This messages is indicated by a signal lamp in the OSHE control box
(configuration "F"). In this case the filter insert should be serviced or replaced.
6.3
Deactivating unit
Set the speed selection switch of the control box to "0" position or use the fan isolator.
NOTE!
Free air passage must be provided, do not obstruct air flow.
Hot spots or heat pockets must be avoided!
Fig. 6-1:
Manual operation
Wall unit
Ceiling unit
