Manual Drayton MiStat C Thermostat

Manual

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

Sw

i

tched

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

Sw

i

tched

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

Rating

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