Adjusting The Circulation Pump; Registering The Comfofond-L Eco On The Comfoair Luxe; Adjusting The Control Temperatures - Zehnder ComfoFond-L Eco 350 L Manuel De L'installateur

More information about this is available in the
'Adjusting the circulation pump' section.
19. Install all parts in reverse order (from point 4 back
to point 1).
An installation report has been included at the
rear of this manual which can be used to note
the details of the brine used.

5.2 Adjusting the circulation pump

The circulation pump supports two user modes.
The 'constant pressure' mode is always used on
the ComfoFond-L Eco.
Variable pressure..
Constant pressure.
The ComfoFond-L Eco uses a circulation pump
to pump the brine through the brine loop. This
circulation pump must be adjusted correctly to
achieve the best possible performance of the
ComfoFond-L Eco. The circulation pump setting is
subject to the ComfoAir Luxe type:
- The circulation pump for the ComfoFond-L Eco
350 must achieve a flow rate of 6-8 litres per
minute;
- The circulation pump for the ComfoFond-L Eco
550 must achieve a flow rate of 8-10 litres per
minute.
The pump setting is subject to:
The total length of the terrestrial heat
collector;
The internal diameter of the terrestrial heat
collector;
The composition of the brine mixture;
The temperature of the brine mixture.
The correct setting for the circulation pump
can be determined using the ComfoFond-L Eco
specifications.
An installation report has been included at the
rear of this manual which can be used to note
the setting used.
5.3 Registering the ComfoFond-L Eco on
the ComfoAir Luxe
The control for the ComfoFond-L Eco is not activated
as standard on the ventilation unit. This must be
registered first.
This is done by selecting option '1' in P-menu 'P60'.

5.4 Adjusting the control temperatures

The ventilation unit switches the circulation pump
of the ComfoFond-L Eco on and off at pre-set
temperatures. These desired temperatures can be
set in the P-menus "P62" and "P63" of the ventilation
unit.
In the Winter mode, the ventilation unit will switch
around the temperature that is set in P-menu
"P62".
The best setting for P-menu P62 is a few degrees
below the lowest brine temperature. The lowest
brine temperature is a few degrees above the
average local annual temperature;
In the Summer mode, the ventilation unit will
switch around the temperature that is set in
P-menu "P63".
The best setting for P-menu P63 is a few degrees
below the set comfort temperature of the
ventilation unit.
The minimum and maximum values for the
available settings parameters are preset in the
software of the ventilation unit.
The circulation pump of the ComfoFond-L Eco will
be activated if:
The temperature sensor of the ComfoFond-L
Eco measures a temperature lower than the
temperature that is set in menu P62 when in
Winter mode;
The temperature sensor of the ComfoFond-L
Eco measures a temperature higher than the
temperature that is set in menu P63 when in
Summer mode.
The circulation pump of the ComfoFond-L Eco will
be deactivated if:
The temperature sensor of the
ComfoFond-L Eco measures a temperature
higher than the temperature that is set in menu
P62 when in Winter mode;
The temperature sensor of the
ComfoFond-L Eco measures a temperature lower
than the temperature that is set in menu P63
when in Summer mode.
An installation report has been included at the
rear of this manual which can be used to note
the set temperatures.
23 - EN