32
INSTALLATION & SERVICE MANUAL FOR PROFESSIONALS
Installation
: Calibration of airflow
Calibration of airflow
This section will guide you through balancing of HCH5 MKII.
Only trained and certified technicians are allowed to balance the unit!
Regulation of the air flow rates must always be carried out according to the national legisla-
tion.
Only nominal air flow rate must be balanced. The nominal air flow rate corresponds to the
calibration done on the unit. See the other set points in the section “Set points and control
strategies” on page 16 and “Description of the con-trol panel” in the user’s guide.
Regulation of the unit must take place in the following situations:
• Before the first operation of the unit
• If the size of the house has been changed
• If the house is renovated and the ducting system is affected by it
• If the filter type is changed e.g. in connection with the pollen season
All air dampers in the ducting system must be installed according to manufacturer rec-om-
mendations before the regulation of HCH5 MKII should take place.
Make sure that you have the following equipment ready before the installation starts:
• Pressure manometer with approx. 5 mm diameter hose matching the pressure adapter
on the unit, which is 6 mm in diameter
• Screwdriver with hexalobular pan head 25
When balancing the air volumes of HCH5 MKII it is important to ensure that the airflows are of
equal mass flow!
Important:
The supply air flow (T2) must under no circumstances be higher than the extract air flow (T3),
as this can cause humid air to be pressed into the building construction, with destructive,
negative, effects on the building, if the vapour shield it not 100 % air tight
Follow this procedure to balance the unit:
Step
Action
1
Dismount the front door.
Make sure that the insulating cover
plates in front of the filters are correctly
mounted with the soft side towards the
filter. Push the sheets against the filter to
avoid any air being sucked in that way.
Introduction
Important
Legislation
When
Before you start
Balancing the air
flows
Procedure
Summary of Contents for HCH 5 MKII
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