Zehnder Rittling ComfoFond-L, Installation Manual, Page: 6 / 32

EN 2
1. Introduction and safety
What is this unit for?
The Comfofond-L is a fluid geothermal exchanger,
also known as a terrestrial heat exchanger. The
Comfofond-L heats or cools the outdoor air using
terrestrial heat. The heated or cooled outdoor air is
then led into the dwelling.
Function
1. Brine loop
2. Comfofond-L
3. ComfoAir Luxe
Brine loop pipes are laid in the ground and
connected to the dwelling. In the winter the cold
outdoor air is preheated, ensuring the ventilation
system continues to operate effectively even at low
temperatures. In the summer the warm outdoor air is
precooled.
The Comfofond-L is specially developed to operate
in combination with a Zehnder ventilation system
of type ComfoAir 350 Luxe or ComfoAir 550 Luxe.
The required pump control for the Comfofond-L is
integrated in this ventilation system as standard.
The ventilation unit installation manual covers
in greater detail ventilation issues and how the
ventilation system works. A copy of this manual can
be obtained from Zehnder.
safety instructions
Always comply with safety regulations in this manual.
Personal injury or damage to the Comfofond-L
can arise from non-compliance with the safety
regulations, warnings, comments and instructions in
this manual.
• The Comfofond-L may only be fitted, connected,
commissioned and set up by a registered
installer.
• Installation of the Comfofond-L must be carried
out in accordance with the general and locally
applicable construction, safety and installation
instructions of the local council, electricity and
water boards.
• Always follow the safety regulations, warnings,
comments and instructions given in this manual.
• Store the manual in the vicinity of the
Comfofond-L for its entire working life.
• Modifications to the Comfofond-L or its manual
are not permitted.
• Only a recognized cooling-technology fitter may
top up the Comfofond-L or perform maintenance
on parts of the brine loop.
• The fluid in the brine loop is pressurised. The
system must be de-pressurised in a controlled
manner if maintenance is required on the brine
loop. Use the taps and filling valves in the unit to
do this.
• When carrying out any work on the Comfofond-L,
make sure the power is disconnected and cannot
be inadvertently reconnected.
To disconnect the Comfofond-L, you must
disconnect the ComfoAir Luxe from the power
supply to which it is connected.
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