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Install the change-over valve in accordance with the instructions
included in the product package. Exercise great care when posi-
tioning the actuator to the valve arbour. An incorrectly installed
actuator can cause equipment failure.
A. Charging, domestic hot water (Esbe, square)
B. Charging, heating (Esbe, triangle)
AB.
Charging
from
the
7.3
Connections of an additional heat
source
Connection of an additional heat source to the heating circuit
The additional heat source can be an oil-fired boiler, natural gas,
district heating or an electric boiler.
The additional heat source affects the pipe connection; the cor-
rectness of the connection should be confirmed with the equip-
ment supplier or representative. The example connection is pre-
sented
as
a
diagram
Connecting the additional heat source in series with the heat
pump is recommended. The series connection enables optimal
operation of the heat pump with the additional heat source. In the
series connection, the heat pump acts as the primary heat source,
after which the additional heat source compensates for the heat
deficit of the supply pipe by starting to operate. The additional
heat source requires commissioning the regulator.
The additional heat source control does not include a power
supply for the actuator. The complete additional heat source con-
trol package LVLLO1B includes a power supply for the actua-
tor.
The flow sensor B10 is included in the standard heat pump de-
livery.
If a 3-way mixer valve is used to regulate the additional heat
source, the valve must be dimensioned and selected based on the
heating system.
The actuator and valve are not included in the LVLLO1B pack-
age
7.4
Extraction air heat recovery
The extraction air heat recovery system circulates brine to an ex-
traction air radiator without any need for a collection circuit. Ob-
serve the manufacturer's instructions when installing the extrac-
tion air radiator. The capacity of the heat pump is to be deter-
mined on the basis of the capacity of the extraction air radiator
and the cooling output capacity of the heat pump.
18
heat
pump
(Esbe,
circle)
with
an
oil-fired
boiler.
Example of extraction air heat recovery connection
7.5
Connections for external fixed fuel
burners
Burner control
Burner control refers to any uncontrolled heat source such a
wood burner or a burner equipped with water circulation. The
optional accessory Burner control (KPAKO1A) enables the in-
tegration of a wood burner in the heating system. Heating distri-
bution is to be implemented by means of separate control groups
in order to control output water temperature. In the example con-
nection shown below, the heat pump controller commands the
burner charging pump Q10 in accordance with the programmed
temperature set points on the basis of temperature measurement
output from the accumulator and the wood burner.
7.6
Connecting of domestic hot water sys-
tem
The domestic hot water system must be equipped with a safety
valve (max 10bar) installed in the cold water line as shown in the
figure. It is recommended to lead the overflow pipe of the safety
valves to the nearest floor drain. Install the overflow pipe so that
the water can flow out of the pipe without obstructions.
The domestic hot water safety valve may leak nearly every time
higher consumption of warm domestic hot water ceases. The
overflow is caused by the thermal expansion of cold water and
pressure shocks. The safety valve leak can be prevented by in-
stalling an expansion vessel in domestic hot water network. The
vessel evens out the pressure changes and prevents pressure
shocks.
5.
Cold water
6.
Domestic hot water
7.
Domestic hot water circulation
Gebwell GEMINI
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Troubleshooting
