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Installation Notes
The RF link between the Room Thermostats (DT92E) and the Zone
Programmer (ST9520C) in Honeywell system packs is pre-configured
at the factory and therefore all units should be installed at the same site.
•
If products from individual system packs are separated, or mixed
with other pre-configured system packs during installation, or a
faulty unit is being replaced, the desired units must be specially
configured to allow them to communicate with each other. This
process is called Binding. Please refer to section 6 Binding / Re-
binding Procedure.
•
DT92E or ST9520C will not communicate with other RF products
that use different frequencies or communications protocols.
•
The DT92E room thermostat requires no power source other than
the batteries provided.
•
The ST9520C Programmer requires a permanent 230V~ supply.
•
The ST9520C Programmer should be installed and powered up
before commencing installation on the DT92E room thermostats.
•
If controlling the boiler via an OpenTherm connection, the ST9520C
must be configured to provide this form of output (see Section
4 System Configuration)
•
If the boiler is being switched using a remote relay box (BDR91T)
the relay box is not supplied in this pack and will require to be bound
to ST9520C (see Section 6 Binding / Re-binding Procedure)
RF Signal Propagation
Within a typical house two RF products should communicate reliably
within a 30m range. It is important to take into consideration that walls
and ceilings will reduce the RF signal. The strength of the RF signal
reaching the Programmer depends on the number of walls and
ceilings separating it from the room thermostat, as well as the building
construction - the diagram below illustrates an example of typical
signal strength reduction. Walls and ceilings reinforced with steel or
plasterboard walls lined with metal foil reduce the RF signal significantly
more.
= Signal Strength
Wall
Ceiling
Max. Signal Length 30 metres
Typical example of Building Fabric Signal losses
Wall
Wall
Installation Sequence: Step by Step
Section
1.1 Mounting ST9520C .................................................................. 3
1.2 ST9520C Mounting options ..................................................... 3
1.3 Wiring ST9520C ....................................................................... 3
1.4 ST9520C Final Assembly ......................................................... 3
1.5 ST9520C Internal Wiring .......................................................... 4
1.6 Wiring Diagrams ...................................................................... 4
1.7 Replacing Other Time Controls ............................................... 5
1.8 Powering Up ST9520C ............................................................ 5
2.1 Locating DT92E ....................................................................... 6
2.2 Powering Up DT92E ................................................................ 6
2.3 DT92E Signal Strength Test ..................................................... 6
2.4 Mounting DT92E ...................................................................... 7
2.5 Separating DT92E from its Mounting Plate .............................. 7
3.1 Locating the BDR91T............................................................... 8
3.2 BDR91T Mounting Options ...................................................... 8
3.3 Wiring BDR91T ........................................................................ 8
3.4 BDR91T Final Assembly .......................................................... 8
4.1 ST9520C Installer Modes......................................................... 9
4.2 Boiler Service Reminder / Shut-down Feature ......................... 9
4.3 Installer Setup ........................................................................ 10
4.4 Installer Setup Flowchart ....................................................... 11
4.5 OpenTherm Setup and Information Display .......................... 11
4.6 Set Service ............................................................................. 12
4.7 Change PIN ........................................................................... 14
4.8 What the User Will See When a Service is Due ..................... 14
4.9 Resetting the Service Timer Function .................................... 14
5.1 DT92E Installer Mode ............................................................ 15
6.1 Binding................................................................................... 16
6.2 ST9520C Guided Binding Menu ............................................ 16
6.3 Replacing Devices or Changing the Application .................. 16
6.4 Binding Menu Display............................................................ 17
6.5 How to Bind DT92E to ST9520C ............................................ 17
6.6 How to Bind BDR91T to ST9520C ......................................... 18
6.7 How to Test BDR91T Signal Strength .................................... 19
7.1 System Test Checklist ............................................................ 20
7.1 Completion Checklist ............................................................. 20
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