Manual Drayton MiStat C Thermostat

Manual

What is a cylinder thermostat?

... an explanation for householders

A cylinder thermostat switches on and off the heat

supply from the boiler to the hot-water cylinder. It

works by sensing the temperature of the water inside

the cylinder, switching on the water heating when the

temperature falls below the thermostat setting, and

switching it off once this set temperature has been

reached.

Turning a cylinder thermostat to a higher setting will

not make the water heat up any faster. How quickly the

water heats up depends on the design of the heating

system, for example, the size of boiler and the heat

exchanger inside the cylinder.

The water heating will not work if a time switch or

programmer has switched it off. And the cylinder

thermostat will not always switch the boiler off,

because the boiler sometimes needs to heat the

radiators.

Cylinder thermostats are usually fitted between one

quarter and one third of the way up the cylinder. The

cylinder thermostat will have a temperature scale

marked on it, and it should be set at between 60C and

65C, then left to do its job. This temperature is high

enough to kill off harmful bacteria in the water, but

raising the temperature of the stored hot water any

higher will result in wasted energy and increase the

risk of scalding.

If you have a boiler control thermostat, it should

always be set to a higher temperature than that of the

cylinder thermostat. In most boilers, a single boiler

thermostat controls the temperature of water sent

to both the cylinder and radiators, although in some

there are two separate boiler thermostats.

Drayton

MiStat

TM

C

Cylinder Thermostat

Model: C110C

Invensys

Customer Service Tel: 0845 130 5522

Customer Service Fax: 0845 130 0622

Technical Helpline: 0845 130 7722

Website: www.draytoncontrols.co.uk

E-mail: customer.care@invensys.com

l

@DraytonControls

x

/DraytonControls

EU Design Regs:- 002180638-1/2/3

User Guide 06490192001 Iss E

MiTime

MiStat

MiTime

MiStat

HOMEOWNER Guide

HOMEOWNER Guide

Step 5: Receiver - Key & LED

→

Step 1: Keys and Display - MiStat

RF Pack: MiStat C110C

→

Step 2: +hr (Timer)

Press +hr to start the Timer. The prior used

temperature and time will be displayed and the

temperature will flash.

Press +/- to adjust +hr temperature, then press ( )

to confirm.

Press +/- to adjust +hr period between 0 and 23 hours.

Press (

) to confirm.

→

Step 3: Additional User Settings

ID Feature: Description: Factory Pre-Set:

1 MAX-TEMP

It will not be possible to set a higher

temperature

If MAX-TEMP and MIN-TEMP are

set to the same value, it will not be

possible to change temperature

with the +/- keys.

70°C

2 MIN-TEMP

It will not be possible to set a lower

temperature

40°C

DONE

Exit from the settings menu to USER-S

Lamp

colour

Mode Action Key

Function

Green Normal Call for heat

(boiler is firing)

None

Green

Flashing

Normal RF

communication

None

Off Normal No call for heat

(boiler is not

firing)

None

Red RF loss

or not

bound

No call for heat Switches

the boiler

On for 1hr

Amber RF loss

or not

bound

Call for heat Switches the

boiler Off

→

Battery Handling

Batteries, rechargeable or not, should not be disposed

of into ordinary household waste. Instead, they must be

recycled properly to protect the environment and cut down

the waste of precious resources.

Your local waste management authority can supply details

concerning the proper disposal of batteries.

In compliance with the EU Directive 2006/66/EC, the button

cell battery located on the printed circuit board inside the

product, can be removed at the end of the product life, by

professional personnel only.

Step 4: Changing the Batteries

How do I know when to change

the batteries?

When the batteries start to run low a battery icon will

flash in the display to indicate “low battery”, during

this time the MiStat will function normally. When

the battery icon alone is shown in the display, the

batteries are completely exhausted and the MiStat will

cease to function (see below). Re-activate by replacing

the batteries.

How to replace the batteries

Remove the battery covers as shown. Replace the batteries with 2 x 1.5V IEC LR6 (AA) Alkaline batteries ensuring

correct orientation. Replace the battery covers pressing fully home.

Battery Covers:

Slide outwards

to remove

MiStat Rear

LED: See table below for details

Key: See table below for details

MiStat

MiStat

MiStat

MiStat

MiStat

MiStat

To set a suitable temperature for up to 23 hours, e.g.

for short term absence.

Now the timer is running. The time will be counted

down each hour.

Once the time has elapsed, control returns to the prior

temperature screen.

The Timer can be cancelled by pressing

key or by

setting the +hr period to 0.

Customize the controller according to personal requirements.

To enter User Settings

Press + & – keys for approx. 5

Seconds to enter the settings

menu as shown below.

Press Select (

) to enter the user

settings.

To exit User Settings

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.

✎ Troubleshooting:

1 Setting temperature values is restricted

a

Are Minimum/Maximum temperatures activated?

see Homeowner Guide Step 3.

2

NO SIGNAL is visible on the screen, no reaction on

key presses anymore

a

Is the receiver powered? (Red signal lamp should

be visible)

3 LOCKED is displayed

a see Installation Guide Step 5 - LOCK

4 Is the battery symbol visible?

a Replace batteries, see Homeowner Guide Step 4.

5

STARTING is visible on the screen, no reaction on key

presses anymore

a

Is the receiver powered? (Red signal lamp should

be visible)

6

WAIT is visible on the screen, no reaction on key

presses anymore

a

Is the receiver powered? (Red signal lamp should

be visible)

MiStat

Current hot water temperature

Current set temperature

Call for heat indication.

This flame will be visible

when the hot water

temperature is below

the set temperature.

+hr key: Press to set a

suitable temperature

for up to 23 hours (see

step 2).

Select key: Press

to open and save

editor screens

+ & - keys:

Press to change

the current

temperature.

key: Press to

cancel +hr and

display home.

RF transmission indication. The

RF symbol will be visible as

follows,

Short flashes = RF transmission

Continuous flashing = RF signal

issue

6444 Invensys MiStat C 06490192001 IssE.indd 1 27/09/2013 09:22

Rating

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