ID
Feature:
Description:
Factory Pre-Set:
5
BACKLIGHT
Available options are: On with timeout (TIMED), Always Off (OFF)
TIMED
7
LOCK
Protect MiStat against unauthorised use. If active, any key press will show LOCKED for a few Secs.
To lock: Enter your 3 digit code for protection.
To unlock: Press +&- key for approx. 5 sec. Enter your 3 digit code
000
Master code 401
10
VALV-PROT
The output will be activated for the specified time (in Minutes). This will happen weekly, related to
the last actuation of the output. Select OFF, 1 to 10 Minutes.
OFF
11
WIRELESS
To create a radio link with the receiver or to view the RF signal quality
Pre-bound
12
BIND
Press
( )
key to start connecting to the receiver.
NB. “binding” must also be activated on the receiver, see Step 6 Commissioning
BINDING
An RF connection to the receiver will be created. If successful, the SIGNAL level will be displayed.
If unsuccessful, FAILED will be displayed.
13
SIG-LEVEL
Indicates the quality of the RF transmission
VERY GOOD, GOOD, POOR, NO SIGNAL
DONE
To exit WIRELESS sub menu
15
PROD-INFO
View the product details, e.g. Part number, Firmware revision etc. Use
( )
key to show the details
16
RESET
Will reset all settings to factory pre-sets
OFF
DONE
Exit from the settings menu to INST-S
INSTALLATION
Guide
Step 3:
Signal Strength
→
The MiStat Cylinder thermostat is prebound to the MiStat
receiver in the factory so they just need to be positioned
in the best place for wireless communication. To help
with this there is a built in Signal strength indicator,
available in the Installer settings menu on the MiStat
thermostat, as shown.
It is recommended that the signal strength is Good
or Very Good to ensure ongoing communication is
maintained.
To enter signal strength menu
(see step 5 for more detail)
• Press + & - for approx. 5 secs, then scroll (+/-) to show
INST-S,
• press
( )
to enter the installer menu,
• Press +/- until 11 WIRELESS is shown,
• press
( )
to enter,
• press +/- to show 13 SIG-LEVEL as shown,
• press
( )
to see the current signal strength.
Step 4
(Continued)
Step 5:
Installer Settings
→
Customize the MiStat according to application needs.
Step 1:
Mounting the Wallplate
Step 2:
Wiring
!
IMPORTANT:
Installation must only be carried out by a
qualified electrician or heating engineer.
Make sure mains input has a 3 amp fuse.
!
CAUTION! Before installation, make sure the
mains supply is switched off!
Option 2: Using an existing wall-plate
Loosen the securing screws on the old receiver
and unplug it. Check that there’s 20mm clearance
to the right of the wall-plate and 25mm above it.
Check the wiring diagram for your product model
to compare terminals and, if necessary, change
the wiring of the wall-plate to suit. Now plug the
MiStat R unit into the wall-plate and tighten the
securing screws.
Check the 3A fuse, and switch on the mains.
Option 1: Fitting a new wall-plate
The ideal location is close to the boiler or central
heating system. For the best performance install
in an open space, at least 30cm distance from
any metal objects including wall boxes and the
boiler housing. It is recommended that the
MiStat R is mounted on the wall nearest the final
location of the MiStat C room unit and not less
than 30cm from the boiler side panel.
Loosen the securing screws, remove the
wallplate and, if surface wiring is to be used,
snap out the cable entry strip on the bottom
edge of the wallplate with a pair of pliers. Fix the
wallplate, terminals at the top, either direct onto
the flat wall using wall plugs and no 6 x1” wood
screws or on a plastic flush mounting single
conduit box using M3.5 x 14 screws. Check that
there’s 20mm clearance to the right of the wall-
plate and 25mm above it. Complete the wiring
to the MiStat R wallplate in accordance with the
wiring diagram in step 2, to comply with current
IEE regulations. Place the MiStat R onto the
wallplate and tighten the securing screws.
Check the 3A fuse, and switch on the mains.
Warning:
Installing the MiStat R too close to the
metal side panel or mains cables may interfere
with the radio signal.
→
→
!
DO NOT
use a surface
mounting box
This product is double insulated and
does not require an earth connection.
The MiStat R should be wired to the
boiler or central heating wiring using the
correct type of cable or flex. The MiStat
R should be wired to replace hard wired
room or programmable thermostats,
as shown on the system or boiler wiring
diagrams.
Always check other manufacturers
instructions for compatibility.
N L 1
2 3
230V AC 50Hz
Fused 3A
Common
heating
satisfied
or call for
cooling
Call for
heat
Volt free contacts
Combi boiler basic wiring layout
Zone control basic wiring layout
Note:
If not bound, the bind screen will be visible.
For commissioning see Step 6
Note:
Only needed if not already bound, ie if
replacing either the MiStat thermostat or the
MiStat receiver.
To exit Installer Settings
Press +/- until ‘DONE’ is shown, then press ‘Select’ or
press + & – keys for approx. 5 seconds to exit. If there
is no key pressed for 2 Minutes, the system will exit the
menu, any changes will be saved.
1.
Turn on power for the receiver. The red lamp will
come on. (if green lamp is visible, the device is
already bound, no further action needed here)
(If a separate programmer/Timer is fitted, ensure
that it is switched on)
2.
Push the button for >5 Seconds and the LED will
flash red – yellow – green --- -red – yellow - green…
3.
Enter binding mode on the corresponding
MiStat room unit, see Step 5: Installer settings ,
item 11
Important:
It is essential, that the binding is
carried out between the corresponding room
unit and the receiver
4.
If binding is successful, the signal strength will
be indicated on both the MiStat room unit and
the MiStat receiver as follows. If unsuccessful,
FAILED will be displayed. If POOR SIGNAL
is displayed, look for a better location. If NO
SIGNAL is displayed, try connecting again with
the room unit in a different position.
MiStat Room Unit
MiStat Receiver
Immediately after binding, these signals will indicate
the signal quality for 1 minute.
•
three green flashes = Very good signal
•
double amber flashes = Good signal
•
single red flashes = Poor signal
•
steady red = No signal
To check the wireless connection
A green lamp on the receiver will indicate a good RF
connection.
→
To enter Installer Settings
Press
+ & –
keys for approx. 5 Seconds to enter the
settings menu as shown.
Note:
If not bound, the bind screen will be visible.
For commisioning see Step 6
Technical Data
Step 6:
Commissioning
MiStat C110C & MiStat R111M
Supply voltage
MiStat C: 2 x AA 1,5V alkaline
batteries
MiStat R: 230V
Switch rating
MiStat R: 2(1)A 230V a.c.
Ambient
temperature
Operating: MiStat C 0°C to 50°C;
MiStat R 0º to 45ºC
Storage: –20°C to 55°C;
Battery life
MiStat C: 2 years (typically)
Temperature
range
40°C to 70°C
Control accuracy
+/- 8°C
Wiring
MiStat R: Fixed wiring only, to comply
with current IEE regulations (BS7671)
MiStat C: No wiring required
MiStat Sensor: Ø0.5mm2 2 core
cable between Sensor & MiStat.
Mounting
MiStat R: Industry standard wallplate
MiStat C: Wall bracket
MiStat Sensor: Direct mounting onto
cylinder
Radio frequency
868.3 (Bi-directional communication)
Radio signal range
30m typically. The range may be
affected by the composition / density
and number of walls between the
MiStat C and MiStat R
Pollution degree
2
Software class
A
Rated impulse
voltage
MiStat R: 2.5kV
Ball pressure test
temperature
MiStat R: 75°C
Relevant EC
Directives:
2006/95/EC Low Voltage Directive
2004/108/EC Electromagnetic
Compatibility Directive
1995/5/EC R&TTE Directive
2006/66/EC Battery Directive
2011/65/EU RoHS Directive
Applied
Standards:
EN60730-1; EN60730-2-9
ETSI EN 300 220-3; ETSI EN 301 489-3
eg.
eg.
eg.
eg.
User Code:
N L 1 2 3
L
MiStat R
MiStat R
Switched live
from wiring
centre
Motorised valve
N
To boiler
and/or
pump
Radio signals
to MiStat R - no wiring
230V AC
fused 3A
N L 1 2 3
L -
N -
Radio signals
to MiStat R - no wiring
Switched
230V AC
fused 3A,
Internal
boiler
electronics
External
controls
connections
N L 1 2 3
L
MiStat R
MiStat R
Switched live
from wiring
centre
Motorised valve
N
To boiler
and/or
pump
Radio signals
to MiStat R - no wiring
230V AC
fused 3A
N L 1 2 3
L -
N -
Radio signals
to MiStat R - no wiring
Switched
230V AC
fused 3A,
Internal
boiler
electronics
External
controls
connections
If POOR is displayed, look for a better location.
If NO SIGNAL is displayed, try connecting again with
the room unit in a different position.
→
Step 4:
Mounting Options
The MiStat C should be located in a convenient position
for the end user, close to the domestic hot water cylinder
being controlled.
Once the best position has been identified, the MiStat
C should be fixed to the wall using the wall bracket as
shown.
MiStat
Wiring
Cylinder Thermostat
External Sensor
Cylinder Thermostat Sensor
Locate the external sensor terminal block on the lower
edge of the MiStat C thermostat, connect a 2-core
cable, cut to the required length to reach the sensor
position. Connect to the sensor in the position shown
and fold wires back through the cable grip & out
through the cable entry, re-assemble the housing.
Clip the spacer
provided onto
the sensor
housing
The sensor should be installed approximately one
third of the way up the hot water cylinder. With pre-
insulated cylinders, mark the position and size, and
remove just enough insulation to allow the sensor to fit
against the metal of the cylinder in the recess formed.
The plastic covered spring fixing cable should be cut
to an un-stretched length of approximately 60-75mm
(2½”-3”) less than the circumference of the cylinder
and the hook and eyelet should be screwed into the
ends. Stretch the cable round the cylinder, over the
insulation, and position it in the groove across the front
of the sensor housing, Engage the hook and eyelet.
1/3 cylinder height
Cylinder
Insulation
Fixing cable
Sensor
Sensor
Cylinder
→
Cable entry
Connect here
NTC
Sensor
Cable
grip
6444 Invensys MiStat C 06490192001 IssE.indd 2
27/09/2013 09:23
