Nibe FMS 40, Installer Manual, Page: 4 / 16

General
This accessory is used when installing the following
compatible products from NIBE:
• F1345
• F1355
Caution
For assembly, see the end of this manual.
BOTH COMPRESSORS FOR THE SAME
DEMAND
In systems where both the compressor modules are
working for the same demand, 2 x FMS 40 are used.
ALTERNATING DEMAND WITH ONE
COMPRESSOR
In systems where you want to use the lower com-
pressor for hot water production, or pool, 1 x FMS 40
and 1 x FMS 42 are used.
• In default mode with control voltage off, the reversing
valve (EB100-QN10) must be open to the upper com-
pressor module (EP15). With the control voltage on,
the reversing valve (EB100-QN10) must be open to
the hot water accumulator/pool.
Caution
Check that the direction of flow is set correctly
when the reversing valve’s motor (QN10-MA1)
is installed for default mode, see page
11 figure
4.
If the direction of flow is not correct:
1. Remove the reversing valve’s motor (QN10-MA1).
2.
Set the valve and the motor in default mode.
3.
Fit the motor.
For information regarding the electrical connection of
the reversing valve’s motor, see the Installer Manual for
the compatible product.
TECHNICAL SPECIFICATIONS
FMS 42 FMS 40
16 15 kg Weight
external thread G2 - Connection, heating
medium (EB100-XL1
- EB100-XL2)
external thread G2 - Connection,
brine(EB100-XL6 -
EB100-XL7)
internal
thread G
1½
- - Connection, water
heater supply(EB100-
XL8)
external
thread G
1½
- - Connection, water
heater return(EB100-
XL9)
067 793 067 792 - Part no.
FMS 40/FMS 42 | GB 4
English