Dantherm HCH 5 User Manual

7
060798 • Version 1.4 • 22.01.2019
en
Functional description, continued
Manual operation
In order to change the air flow rate, defined by Automatic Demand Mode, it is possible
to select between Fan Step 0 – 4 manually. See the following examples:
Fan step
Function
Fan Step 0 - 4 on the unit is adjustable on the control panel.
0
The unit is turned off. It is only used due to e.g. obnoxious smells
from outside.
If the fans are disconnected for more than four hours there is a risk of
condensation in the ducts and risk of moisture damage in the unit.(all
four lamps for fan steps are turned off).
Note that Fan Step 0 is only active for four hours, after which the unit
will continue operating on Fan Step 3.
1
Can be used at night time or in absence due to e.g. holidays.
When the house is empty the ventilation can temporarily be reduced.
2
Is used at a normal demand for ventilation.
Can also be used during absence if Fan Step 1 provides too little air
change
3
Is used for a normal or high ventilation demand.
E.g. when cooking, bad, drying a larger amount of clothes, having vis-
itors and when heat waste occurs
4
Is used when a large amount of air change is needed – e.g. during or
right after a party where the house needs to be thoroughly ventilated.
Note that Fan Step 4 is only active for four hours after which the unit
will continue operating on Fan Step 3.
Manual bypass
The purpose of bypass is to cool down the house by leading the cold outside air flow
directly into the house avoiding it is heated up in the heat exchanger.
During normal operation (when manual bypass is
not activated) the unit cools down by
the means of automatic bypas
s control, when the inside as well as the outside tempera-
tures allows it, which is the reason why in most cases manual bypass is not necessary.
In houses with large fronts of glass facing south, which causes a large amount of heat-
ing, it can be necessary t
o activate manual bypass in the early spring or in the autumn,
because the automatic bypass does not automatically activate refrigeration with outside
air since the outside temperature is below 15 °C.
When using manual bypass the unit supplies cool outside
air directly to the house for
six hours. Information regarding set points for manual and automatic bypass is found in
the installation guide.
Continued overleaf

Dantherm HCH 5 Specifications

General

Brand	Dantherm
Model	HCH 5
Category	Fan
Language	English