F1145 for heating systems, any accessories as well as additional heaters
NIBE AB - Energy systems Box 14, SE-285 21 Markaryd www.nibe.eu
ODM GB 1010-1
M10788
PAGE 1 (5)
Application
Houses with water-borne heating systems.
Function
F1145 prioritises hot water charging. The
heat pump is controlled by the outdoor
sensor (BT1) in combination with the in-
ternal ow sensor. The internal immersion
heater is connected automatically when the
energy requirement exceeds the capacity of
the heat pump.
Heating system 2
The external circulation pump (EP21-GP20)
is dimensioned for the under oor heat-
ing system’s demand. The ow through
the heat pump is adjusted using the heat
medium pump and any applicable control
valve.
NOTE!! In cases where the system volume
in the heating system is below 20 l/kW
(compressor output) and/or heating me-
dium ow is choked uncontrolled, a UKV
tank is installed as a volume increaser. For
only under oor heating systems and UKV,
3 connections on the UKV tank must be
used according to its installation instruc-
tions.
Note! This is an outline diagram. Actual
installations must be planned according to
applicable standards.
See the appropriate “Installer manual” for
more information.
Outline diagram
-QM31
-QM32
-FL3
-QM42
-QM12
-CM2
-HQ1
Lables according to IEC 61346-2
-QM34
-XL15
-BT1
-EB100
F1145
-FL2
-CM1
-EP12
Designations according to standard IEC 61346-2
Ext. electr. heating add.
Ext. district heating add.
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