Manual Horstmann HRFS1 Thermostat

Manual

• Press or to scroll

through the days of the

week pressing SELECT

to begin reviewing or

adjusting the time and

temperature settings for

that particular day. "Hour"

is now flashing to indicate

that it is the selected item

to be adjusted.

Manual Issue No. IM-T105NP-002

RF Programmable

Room Thermostat

1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Warning - Please read this manual prior to

installation or use.

Shock Hazard

This unit must be installed by a competent

person, in accordance with BS 7671 (the IEE

Wiring Regulations), or other relevant national

regulations and codes of good practice.

Always isolate the AC Mains supply before

installing this unit.

INTRODUCTION

INTRODUCTION

This thermostat can replace most common

residential thermostats and is designed to be used

with electric, gas or oil heating control system or

cooling system.

Unlike ordinary single unit design thermostats,

This is a new type of thermostat separating the

operational functions into two units. The Receiver

serves for wiring connections and heat/cool on/off

control. The Control Centre serves as user interface

and temperature sensing/control. The two units are

linked by Radio Frequency.

The advantage is that user can put the Control

Centre nearby and can read/control the temperature

of the actual living area.

Outlook of Control Centre:

LCD Display:

19 20 21 22

Instruction Manual

2

Frost Protection

Button

Set Button

Select Button

Reset Button’

Up Button

Down Button

Back-Light Button

SET

SELECT

Day

Programme No. Indicator

Time

Heat / Cooler On Indicator

Frost Protection

Temperature

Low Battery Indicator

Set Programme indicator

Front cover

LED

Indicators

Power

switch

Front inside view

ON

OFF

Outlook of receiver

Features:

Several useful function and operating modes have

been incorporated to suit a variety of customer

needs besides all the features associated with the

state of the art programmable thermostat.

Control Centre:

- Can be placed anywhere in the home to detect

and control the temperature of an area of the

user’s choice. Not limited by power control wiring

locations.

- Link with the Receiver via RF. Control distance

60M open site

- LCD shows the "need to know" information

only, which is easier to understand.

- Real time clock with day of the week display

- Room temperature display

- Programme set-point display

- Simplified temperature adjustment - Simplified

programming procedure

- Default factory preset programme from start up

or reset

- 5-2 or 7 day programming

- Frost Protection preset at 5˚C

- Temporary override set-temperature

- User selectable temperature span

- User selectable heater/cooler operation mode

- Battery level detection

- 2 AA size alkaline batteries

- Slim housing design

- EL backlight

Receiver:

- Linked with Control Centre via RF.

- Power control rating 230V AC up to 16A resistive.

- Powered by line voltage only. No battery required.

- Two LED indicators for power and output status.

INSTALLATION OF RECEIVER

Caution :

1) Remember to Isolate AC mains supply, note this

must be 230V AC and fused at 13 amps max.

2) Select a suitable indoor location free from water

and moisture.

3) The receiver should not be shielded from the RF

signal in any way, follow ‘Testing the RF Transmission’

section of this manual before deciding on a final

location for the receiver and control centre units.

4) To access the wiring terminals carefully prize off the

front cover from the top middle of the receiver with

a flat head screw driver and remove the 2 screws

underneath as illustrated in the diagram on page 2

of this Manual.

5. Observe the nation regulation for the wiring.

A qualified electrician is recommended for

installation and servicing.

This thermostat has been designed for simple and

quick installation requiring only a few tools. Only

the Power Control Unit needs to be installed.

Required Tools

• Hammer • Masking tape • Screwdriver

• Drill and 3/16" drill bit

(if not installed on a junction box)

RF Address Code Setting

If there is another user nearby, e.g. in the next

house, your receiver may be triggered by their

transmitter. You may select a different RF address

code to prevent this. The receiver can only response to

RF coding with the same address code setting as its

own.

1. To adjust address code of Receiver, simply push up

one or more of the 5 dip switch levers .

2. To adjust the address code of the Control Centre,

open the housing of control centre as illustrated in

the diagram on page 10 of this manual.

3. Remove one or more of the jumper caps as shown

in the diagram on page 6.

Caution :

1. Address code of Control Centre must be the same

as address code of Receiver. For any jumper cap

removal of address code # in Control Centre, same

address code # of Receiver must be put to the UP

position.

2. Disconnect AC power and remove batteries before

adjusting address code.

Note that RESET button must be pressed after removing

any of the jumpers on the Control Centre.

Remove one or more

of the jumper cap to

adjust RF address

code.

Address code # 1 - 5,

from left to right

Push up one or more of

the white levers to adjust

Receiver address code.

Address code # 1 - 5,

from left to right.

WARNING: After removing the wall plate, if you

find that it is mounted on a junction box (e.g. a box

similar to one behind a light switch or electric

outlet), high voltage circuit may be present and

there is a danger of electric shock. Please consult a

qualified electrician.

Choosing a Location for the Control Centre

The Control Centre can be mounted to a wall using

the screws provided or can left in a convenient

location to monitor your living area using the units

integrated stand.

Mounting the Receiver onto the

wall/junction box:

1. Remove the front cover of the Receiver. (go to

step 4 if installed on a junction box)

2. Mark the holes position.

3. Drill two holes and insert the plastic anchors

carefully into the holes until they are flush with the

wall.

4. Connect the wires - see wiring diagram.

5. Push on the wires in the wall.

6. Securely fasten the Receiver to the wall with the

two screws.

7. Replace the front cover and installation is

completed.

Mounting the Receiver onto the

optional wall box :

1. Remove the front cover of the Receiver.

2. Mark the holes position for the wall box.

3. Drill two holes and insert the plastic anchors care

fully into the holes until they are flush with the wall.

4. Pull the wires into the wall box and fasten the

wall box onto the wall.

5. Connect the wires - see wiring diagram.

6. Push on the wires in the wall box.

7. Securely fasten the Receiver to the wall box with

the two screws.

8. Replace the front cover and installation is completed.

SETTING OF

CONTROL CENTRE

Before making any

selection in the

control centre, It’s

back housing must

be removed as

follows :

Inside the Control Centre after back housing is

removed, you can find the DIP switch. These four

switches are used to control the span, heat/cool mode

and 7 or 5/2 program selection.

Heater/Cooler Selection

Set the DIP switch (position 3) according to your

selection of heater system or cooler system as

indicated in the following diagram.

Temperature Span Selection

Span is the temperature difference between the turn

on temperature and turn off temperature. For example,

in heating system, if you set temperature to 20°C

and span to 1°C, the heater will operate when the

room temperature drops to 19.5°C and turns off when

the temperature rises to 20.5°C. Set the DIP switch

(position 1 & 2) according to your selection of

temperature

span as indicated in the following diagram.

1

ON

OFF

ON

OFF

2

ON

ON

OFF

OFF

Span

0.5

O

C

1.0

O

C

1.5

O

C

2.0

O

C

1 2 3 4

Set the DIP Switch (Position 1 & 2)

Set the DIP Switch

(Position 4)

5-2 or 7 Day Programme Selection

The Control Centre is capable of operating with a 5-

2 or 7 day program setting. 5-2 allows you to set one

program for weekdays and another for the weekend.

7 day programming allows a different program to be

set for each day of the week. Set the DIP switch (position

4) according to your selection of program as indicated

in the following diagram.

The following table is the setting of the

thermostat after reset or Power on:

Battery Installation

Your thermostat uses 2 x "AA" size Alkaline batteries to

operate. To power-up the unit, insert two "AA" batteries

into the battery compartment of the front housing.

When power is applied for the first time, the

display must show time and the day as well as the

room temperature (for example 28.5°C).

If the display is different,

press the RESET button.

Use a fine probe such as

straightened paper clip to

gently push the RESET button.

Function Status after Reset or Power on

Operation Mode Normal mode

Room Temperature 22.0°C, to be renewed within 5 seconds

°C indicator On

Clock 12:00

AM/PM indicator AM

Day of Week indicator M

Program Default factory setting

Set-point Temperature Default factory setting

Program indicator Number 1

SET indicator Off

PROG indicator Off

Frost Protection indicator Off

Heat indicator Off

Low-Battery Off, to be renewed

Warning indicator within 5 seconds

Output Relay Off

After reset or power on, the thermostat will operate in

Normal mode. Set-point temperature is reset to default

setting. Room temperature is updated in 5 seconds and

the control process starts. Program Number is updated

to indicate the running program.

1 2 3 4

Note that the

RESET button must

be pressed after

altering any DIP

switch position on

the Control Centre.

ON: 5-2 day programming

Off: 7 day

programming

1 2 3 4

Set the DIP Switch (Position 3)

ON: Heater

OFF: Cooler

Key Function Guide

Increase Set-point Temperature

Decrease Set-point Temperature

Turn on backlight for 5 seconds

Activate/Deactivate Frost Protection

SET Key for Clock/Program settings

SELECT Key for Clock/Program settings

SET

SELECT

Setting The Clock

• Press and hold SET and SELECT in Normal mode

for 3 seconds to enter Clock setting mode.

• Clock, Day-of-Week, and

"SET" are displayed.

All other indicators are

cleared. "Hour" is flashing to

indicate that it is the selected

item to be adjusted.

• Release SELECT, press or to increase or

decrease the "hour" respectively.

• Press and release SELECT, press or to increase

or decrease the "minute" respectively.

• Press and release SELECT, press or to cycle

the Day of Week from "M" to "SU".

• Press and release SELECT to allow change of "hour"

again.

• Press and hold or for 2 seconds to enter fast

advance in 4Hz.

• Selected item will stop flashing when a key is pressed.

The selected item will flash again once the key is

released.

• Press SET at any time to confirm the setting and

return to normal mode.

• Thermostat will return to normal mode if no key

pressed for 15 seconds, Clock is also updated with

the latest setting.

Programming Your Thermostat

The control Centre has a built in factory default program

setup which is operational after initial power up or

reset. The default program is as follows.

Program Weekday (M to F) Weekend (SA to SU)

1 Time: 6:00am Time: 6:00am

Set-point Temp: 21°C Set-point Temp: 21°C

2 Time: 8:00am Time: 8:00am

Set-point Temp: 17°C Set-point Temp: 21°C

3 Time: 4:00pm Time: 4:00pm

Set-point Temp: 21°C Set-point Temp: 21°C

4 Time: 6:00pm Time: 6:00pm

Set-point Temp: 21°C Set-point Temp: 21°C

5 Time: 10:00pm Time: 10:00pm

Set-point Temp: 17°C Set-point Temp: 17°C

Setting Your own Program

5-2 days programming selected

• 5 different sets of Time and Set-point temperature

can be set for the Weekdays or the Weekend.

• To review or change program, press SET in Normal

mode to enter Program Setting mode. Program

1 of the Weekday, and "SET PROG" are displayed.

All other indicators are cleared. "Weekday" is

flashing to indicate that it is the selected item to

be adjusted.

• Press or to scroll between Weekday & Weekend

pressing SELECT to begin reviewing or adjusting

the time and temperature settings. "Hour" is now

flashing to indicate that it is the selected item to be

adjusted.

• Use or to change any settings as required

before pressing SELECT to scroll to the next

setting.

• The time and set-point temperature settings will be

scrolled through in the below sequence.

(Program 1) "Hour" "Minute" Set-point temp

(Program 2) "Hour" "Minute" Set-point temp

(Program 3) "Hour" "Minute" Set-point temp

(Program 4) "Hour" "Minute" Set-point temp

(Program 5) "Hour" "Minute" Set-point temp

and then cycle back to (Program 1)

Press SET at any time to confirm the settings and

return Weekday/Weekend selection, pressing SET again

will accept settings and exit programming.

7 Days Program Selected

• 5 different sets of Time and Set-point temperature

can be set for each individual Day of the Week.

• To review or change the program, press SET in

Normal mode to enter Program Setting mode.

Program 1 of Monday, and "SET PROG" are displayed.

All other indicators are cleared. "Day of Week" is

flashing to indicate that it is the selected item to be

adjusted.

• Use or to change any

settings as required before

pressing SELECT to scroll

to the next setting.

• The time and set-point

temperature settings will

be scrolled through in the

below sequence.

(Program 1) "Hour" "Minute" Set-point temp

(Program 2) "Hour" "Minute" Set-point temp

(Program 3) "Hour" "Minute" Set-point temp

(Program 4) "Hour" "Minute" Set-point temp

(Program 5) "Hour" "Minute" Set-point temp

and then cycle back to (Program 1)

Press SET at any time to confirm the setting and

return to day selection, pressing SET again will accept

settings and exit programming.

TESTING THE RF TRANSMISSION

It is important to site the Receiver and Control Centre in

locations where the RF signal cannot be interrupted. The

receiving range between Control Centre and Receiver is 60M

in open area. Many factors can affect the RF transmission,

shortening the operating distance e.g. shielding by thick walls,

foil back plasterboard, metal objects such as filing cabinets,

general RF interference etc, However, the range is enough for

most household applications.

It is advisable to test the RF transmission from the

intended Control Centre location to the Receiver location

before fixing the Control Centre to the wall.

1. Press UP button until the set-point temperature is

higher than room temperature by a few degrees.

2. Wait for a few seconds. The animated fan (heat/cool call

indicator) should appear on the bottom left of

the LCD on the control centre.

3. Check the green LED on the receiver unit. It should

be illuminated.

4. Press Down button to adjust the set-point

temperature to be lower than room temperature. Wait

for a few seconds. The animated fan (heat/cool call

indicator) should disappear and the green LED should

switch off

5. If at step 3 the LED is not illuminated, Press Down

button to adjust the set-point temperature to be lower

than room temperature to stop the unit calling for

heat. Try to place the Control Centre closer to the

Receiver, repeating steps 1 to 4.

6. Alternatively you can try and alter the address code

following the ‘RF Address Code Setting’ section of this

manual, then repeat steps 1 to 4.

Note that the RESET button on the Control Centre

should be pressed after altering the address code.

23 24 25 26

Multiple Thermostat Installations

Please note, if using more than one Thermostat

in the same installation, be sure that there is

at least a 1 metre gap between receiver units

to avoid RF interference.

When installing multiple thermostats you should ensure

that you assign different address codes for each unit

following the ‘RF Address Code Setting’ section of this

manual. Each thermostat should be introduced to the

installation one at a time with all other receiver units

switched off, also make sure that the batteries are

removed from all other Control Centres.

Install each unit following the ‘TESTING THE RF

TRANSMISSION’ section of this manual. Once you are

happy with the operation of one unit you may install

the next. Once all thermostats are installed, if one unit

then seems to function abnormally, try changing the

address code of the control centre & its corresponding

receiver again taking care that the new code given is

different to all others in the installation.

The control centre sends RF On/Off signals every 10

min to ensure the receiver is in the correct state. If for

some reason the 1st RF signal is interrupted you may

notice the control centre has started/stopped calling

for heat but the receiver hasn’t switched. Simply wait

10 minutes until the next RF signal is transmitted and

the receiver unit should switch.

Reviewing Set-point Temperature:

• Press or to review

the Set-point temperature.

• When any of the programs

are running, the LCD will

show the program Set-

point temperature with

the "SET" indicator

displayed.

•When operating in Frost

protection mode, the

LCD will show 5°C with

the Frost Protection

indicator displayed.

• When operating in

Temporary Override

mode, the LCD will show

the temporary Set-point

temperature.

• Press any key except or ,

or wait 3-4 seconds without

key press to return to

normal mode, room

temperature will be displayed.

Temporary Override:

• Press or again when reviewing Set-point

Temperature to enter Manual Override mode, the

Set-point Temperature is increased or

decreased by increments of 0.5°C accordingly.

• In Normal mode, press and hold or to display

the Set-point temperature. After 2 seconds, the

Thermostat will enter Manual Override mode and

start fast advance at 4Hz. If buttons are released

within 2 seconds, this is treated Set-point Temperature

review only.

• Clock, Day-of-Week, and

"SET" are displayed During

temporary override with all

other indicators cleared. The

Set-point temperature will

flash to indicate it can now

be changed.

The setting range is 10°C - 35°C in increments of 0.5°C.

• Set-point Temperature will stop flashing when a key is

pressed, then flashes again once the key is released.

• Press SET at any time to confirm the setting and return

to normal mode.

• Thermostat will return to normal mode after 3-4

seconds if no key is pressed. Temporary override remains

active until clock or program setting are adjusted, Frost

protection is activated or the next program time /

temperature set-point is reached.

Time Display :12 hour/24 hour

Clock Accuracy :+/- 1 min/month

Air conditioner cycle time :3 minutes

Memory :Memory hold up: 5 minutes

Back Light :Blue colour EL Panel

Battery Low Warning :2.6 - 2.8V

Operating Humidity :0 to 90% RH/non condensing

Protection :Auto cut off at over 35°C

(heating mode)

Auto Cut of at under 10°C

(cooling Mode)

Micro disconnectionType 1.B control action

on operation :

Rated Impulse Voltage :4kV

Storage Conditions :-20°C - 55°C to 90%

RH/non condensing

Agency Approval :CE

Frost Protection (in Heat Control only):

•Press FROST in Normal mode to activate the Frost

Protection.

•The Set-point temperature is automatically set to

5°C to prevent frosting.

•Whenever the Frost Protection is activated, the Frost

Protection indicator is animated with the below

sequence in 4Hz.

•Press FROST again to deactivate the Frost

Protection, the Frost Protection indicator will turn

off.

27282930

BATTERY REPLACEMENT

It is recommended to replace the batteries when the

display is showing the battery-low icon. To replace

the battery,

1. Turn off the power of the Receiver first.

2. Remove the back housing (as illustrated on Page 10)

3. Replace the old batteries with 2 new AA alkaline

batteries.

4. Replace the back housing and stand.

5. Press the reset button once and then turn on the

power switch of the Receiver.

POWER SWITCH

There is a power switch on the Receiver. When there

is no demand to turn on the heating/cooling device,

e.g. when you go on holiday, it is recommended to

turn the power switch to the Off position.

LED INDICATOR

There are two LED’s on the Power Control Unit as

status indicators:

1.The Red LED Illuminates when the unit is receiving

A 230V AC feed and the power switch is in the On

Position.

2.The Green LED Illuminates up on receiving a call

signal from the Control Centre to indicate the heating/

cooling device is energised.

Push and hold

internal lock with

a screw driver

Remove

the front

housing

ON

OFF

After installation of the

batteries, push back the

rear housing to the control

centre and then the stand.

Before turning on the main

switch of the system, press

the reset button once. The

thermostat is ready for use.

WIRING DIAGRAM FOR 230V APPLICATION

The unit is default 230V, if volt free application is required

you must remove link & follow wiring diagram for volt free

appication.

WIRING DIAGRAM

FOR VOLT FREE APPLICATION

(Remove Link!!!)

The unit still requires a 230V feed for V.F. applications

NO - Switched Live (Volt Free)

COM - Volt Free Feed

NC - Normally Closed*

N - Neutral

L - Live (230V Feed)

SL (Off) - Heat Off*

L - Live

SL (On) - Heat On

N - Neutral

It is vital to connect the live into

this terminal to avoid overloading

of the jump wire.

* Not normally used.

WIRING INTO THE EXTERNAL

THERMOSTAT LOOP OF A BOILER

(Remove Link on Receiver & External

Thermostat Link on Boiler!!!)

The unit still requires a 230V Permanent Live feed

Removing your old thermostat

CAUTION : to avoid electric shock, isolate the power

of the heating/cooling system at the main power box

in your home. Read the following instructions carefully

before disconnecting the wires.

1. Turn off your old thermostat.

2. Remove the cover from the old thermostat.

3. Unscrew the old thermostat from the wall plate.

4. Now find the screws attaching the wall plate to the

wall, and remove them. You should now be able to

pull the wall plate a small distance from the wall. Do

not disconnect any wire yet, simply locate the wires.

It is advisable to choose a location about five feet

(1.5 metre) above the floor in an area with good

air circulation and away from.

1. Drafts.

2. Air ducts.

3. Radiant heat from the sun or appliances.

4. Concealed pipes and chimneys.

Your chosen location should allow a clear signal to

reach your receiver with nothing interrupting or

interfering with the RF transmission. Please follow

‘Testing the RF Transmission’section of this manual

when considering where to locate your Control Centre.

Rating

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