Danfoss FH-BU Installation guide
MAKING MODERN LIVING POSSIBLE
DANFOSS HEATING
FH-BU
Electronic Programmer Interface
Installation Guide
GB
2
FHBU
FH-BU
Electronic Programmer Interface
GB
Index
1.0 Installation Overview .............................................................................. 4
2.0 System Overview .......................................................................................4
3.0 Installation
3.1 Wiring .....................................................................................................5
3.2 Use of Single Channel Programmer ............................................6
4.0 Notes ...............................................................................................................9
DANFOSS HEATING
3
1.0 Installation Overview
Please Note:
This product should only be installed by a qualifi ed electrician or
competent heating installer and should be in accordance with the
GB
current edition of the IEEE wiring regulations.
2.0 System Overview
Important note: The FH-BU programmer interface is fi tted inside the lid
of the FH-BU wiring centre, and is used when an FP975-2H programmer
is being installed to provide night setback control of an under fl oor
heating system.
Cabling between the FH-BU and the remotely located FP975-2H
programmer must be carried out using double insulated cable
2
not exceeding 1mm
FP975 must be run in a separate two-core cable.
The maximum cable length between FH-BU and FP975 must not
in cross section. The power supply to the
exceed 10m.
It is important not to run the cable to the FP975 parallel to other
mains cables as these may cause interference.
Associated Products and Part Numbers
FH-BU Programmer Interface 088H782000
FP975-2H 087N759900
TS715-Si 087N789900
4
FHBU
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