Heatmiser PRT-E User manual

Operating Instructions

Model : PRT-E / PRT-EN

Installer Note:

This thermostat is a combination model allowing you to choose if

you require “Floor Only”or “Air & Floor”temperature control.

Please see page 11 for more information.

This product should be installed by a qualified electrican.

Improper installation may result in injury, death or

property damage.

Contents Table

Contents 1

What is a programmable thermostat 2-4

Installation 5-6

Initial Setup Procedure 7-12

Symbols Explained 13

Button Layout 14

Temperature Display 15

Setting the Clock 15

Temperature Override 16

Frost Mode 16

Setting the Comfort Levels 17-18

Keylock 19

Viewing the Floor Temperature 19

Wiring

PRT-E Wiring Diagram 20

PRT-EN Wiring Diagram 21

What is a programmable room thermostat ?

and

thermostat. A programmer allows you to set On and "Off time peri-

ods to suit your own lifestyle. A room thermostat works by sensing

the air temperature, switching on the heating when the air tempera-

ture falls below the thermostat setting, and switching it off once this

set temperature has been reached.

So, a programmable room thermostat lets you choose what times

you want the heating to be on, and what temperature it should

reach while it is on. It will allow you to select different temperatures

in your home at different times of the day (and days of the week) to

meet your particular needs.

Turning a programmable room thermostat to a higher setting will

not

make the room heat up any faster. How quickly the room heats up

depends on the design of the heating system, for example, the size

of the boiler and radiators.

Neither does the setting effect how quickly the room cools down.

Turning a programmable room thermostat to a lower setting will

result in the room being controlled at a lower temperature, and

saves energy.

The way to set and use your programmable room thermostat is to

find the lowest temperature settings that you are comfortable with

and the different times you have chosen and then leave it alone to

do its job.

The best way to do this is to set low temperatures first, say 18ºC,

and then turn them up by one degree each day until you are

comfortable with the temperatures. You wont have to adjust the

thermostat further. Any adjustment above these setting will waste

energy and cost you more money.

If your heating system is a boiler with radiators, there will usually be

only one programmable room thermostat to control the whole

dua

oms

by installing thermostatic radiator valves (TRVs) on individual

radiators. If you dont have TRVs, you should choose a temperature

that is reasonable for the whole house. If you do have TRVs, you

can choose a slightly higher setting to make sure that even the

coldest room is comfortable, then prevent any overheating in other

rooms by adjusting the TRVs.

The time on the programmer must be correct. Some types have to

be adjusted in spring and Autumn at the change between

Greenwich Mean Time and British Summer Time.

You may be able to temporarily adjust the heating programme, for

example “Override”,“Advance”or “Boost”These are explained in

the manufacturers instructions.

Programmable room thermostats need a free flow of air to sense

the temperature, so they must not be covered by curtains or block

by furniture. Nearby electic fires, televisions, wall or table lamps

may prevent the thermostat from working properly.

Installation Procedure

DO`s

1.Do Mount the thermostat should be mounted at eye level.

2.Do read the instructions fully so that you best from our product.

3.Do install the floor probe into a conduit so that it can be replaced

if necessary.

DON’T`s

1.Do not install near a direct heat source as this will effect the

workings of the thermostat.

2.Do not push hard on the LCD otherwise youwill damage the liquid

crystal display and this is not repairable.

Installation

The thermostat is designed to be flush mount, a back box of 35mm

should have been sunk in the wall prior to installation.

Step 1

Carefully separate the front half of the thermostat from the back

plate by placing a small flat head terminal driver in to the slots on

the bottom face of the thermostat.

Step 2

Carefully unplug the ribbon connector which is plugged in to the

front half of the thermostat.

Place the thermostat front half somewhere safe.

this booklet.

Screw the thermostat back plate on to the back box

Step 3

Re-connect the thermostat ribbon cable and clip the two halves

together.

Step 4

Turn on the power to the thermostat and allow

the thermostat to stabilise for 1 hour before

calibrating.

How To Setup Your Thermostat

This thermostat has many options available to you. Once you have

set these settings you can leave them. They will be stored in the

thermostat memory and do not need to be adjusted later.

You need to use the table opposite as a reference guide when

initially setting up the thermostat.

We strongly suggest you read the next few pages so that you fully

understand the features available and the intended use.

You should also understand that by enabling one feature, another

feature maybe made unavailable. This is because the feature is not

available in that mode.

tup

on the following pages.

Feature Description Setting

01 Temperature Format 00=°C 01=°F (°C Default)

02 Switching Differential 01=1°C/F, 02=2°C/F, 03=3°

C/F

(01 = Default)

03 Temperature Calibrate Enter Value

04 Frost Mode 00=Disabled 01=Enabled

(01 = Default)

05 Frost Protection Temp 07-17°C (12°C Default)

06 Output Delay Enter Value

00 - 30 minutes 00=Default

07 Comms # (PRT-EN) Enter number 01-32

08 Optimum Start (Preheat) 00=Disabled (Default)

01=01 hr 02=02 hr 03=03 hr

09 Rate of Change For information only,

10 Air Sensor Selection 00=Internal(Default) 01=Remote

11 Floor Sensor (Mode 1) 00=Disabled 01 Enabled

Floor Limit (Mode 1)

Not Used

Floor or Air&Floor Mode

(Mode 00) | (Mode 01)

20-45°C (28°C Default)

Floor Sensor Only = 00

Air & Floor Sensor = 01 Default

Understanding the Features

The installer should read the following features and then setup

the thermostat accordingy to the features required.

Temperature Format: Select between°C or °F

Switching Differential: This is the number of degrees the heating

switches back on below the set temperature.

Temperature Calibrate: The thermostat is calibrated from the

factory, but you can use this function to calibrate if required.

Frost Mode: You can set whether the thermostat will maintain the

frost temperature even when the thermostat has been turned off

with the power button. As a default, this is enabled.

Frost Protection Temperature: This is used to set the required

frost temperature. The range is 07 - 17°C

Output Delay: To prevent rapid switching, an output delay can be

entered. This can be from 00 - 30 minutes.

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