To b e l e f t w i t h t h e u s e r
Installation and Instructions for Use
Outdoor
Sensor
www.glow-worm.co.uk
www.glow-worm.co.uk
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Customer Service: 01773 828100 Technical Helpline: 01773 828300
General and Sales enquiries: Tel. 01773 824639 Fax: 01773 820569
Please read these instructions and follow them carefully for the safe and economical use of
your boiler. On completion of installation leave the instructions with the user.
General
Benchmark places responsibilities on both manufacturers and installers. The purpose is to
ensure that customers are provided with the correct equipment for their needs, that it is installed,
commissioned and serviced in accordance with the manufacturer’s instructions by competent
persons and that it meets the requirements of the appropriate Building Regulations. The Benchmark
Checklist can be used to demonstrate compliance with Building Regulations and should be provided
to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work in accordance with
the Benchmark Code of Practice which is available from the Heating and Hot water Industry Council
who manage and promote the Scheme.
Visit www.central heating.co.uk for more information.
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Contents
Contents Page
General information 3
Kit contents 5
Section (A)
Installer important information 6
Outdoor sensor location 7
Installation 9
Section (B)
Conguring the outdoor sensor 13
Section (C)
Conguring the outdoor sensor 22
with external Glow-worm Climapro
or Climastat controls
General
The outdoor sensor enables weather
compensation by providing an advanced
level of modulation, achieving an additional
level of efciency. This control compensates
for the outside temperature by modulating
the lower radiator temperatures in warmer
weather and higher radiator temperatures in
colder weather.
The outdoor temperature compensation is
easily congured using either the boilers
interface controls or the interface of an
external Glow-worm Climastat or Climapro
room control (if tted). Optimum comfort
and efciency is achieved when used in
conjunction with a Climastat or Climapro
(in modulating mode). The outdoor sensor
can also be used with a conventional on/off
thermostat.
General Information
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The installation and the commissioning of
the Outdoor sensor has to be carried out by
a competent person in accordance with the
current regulations.
The maintenance and the repairing of the
Outdoor sensor will also require the use of a
competent person.
Documents
Please keep these instructions as well as any
documents enclosed, for future reference.
We accept no liability in case of damage due
to the non-compliance of these instructions.
General Information
Application
The outdoor sensor controls the heating
demand for the appliance, which is
dependant on the outdoor temperature.
Any other use is considered as inappropriate
and is forbidden.
The user will be responsible for any damage
caused by any other use.
Servicing
Clean the case of the outdoor sensor with
damp soapy cloth, make sure that no water
goes inside the outdoor sensor.
Do not use any abrasive cleaning product
as they could damage the housing or plastic
case.
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General Information
(A) Installer important information
Diagram 1
Recycling
The Outdoor Sensor comprises of many
recyclable parts and should be disposed of
according to the current WEEE regulations.
The packaging should also disposed of
according to the current regulations.
Kit contents Refer to diagram 1.
Kit part number 0020040796.
Safety instructions and
regulations
This outdoor sensor is tested and certicated
for safety and performance. It is, therefore,
important that no alteration is made to
the outdoor sensor, without permission, in
writing, from Glow-worm.
Any alteration not approved by Glow-worm,
could invalidate the certication, appliance
warranty and may also infringe the current
issue of the statutory requirements.
Safety instructions
WARNING:
Incorrect installation can cause electric shock
and damage to the outdoor sensor.
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Outdoor sensor
INSTALLATION AND
INSTRUCTIONS FOR
USE LITERATURE.
LABEL
OUTDOOR
SENSOR
EDGE
CONNECTOR
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Regulations
When installing and commissioning the
outdoor sensor, the regulations below shall
be observed in their current version.
Where no specic instructions are given,
reference should be made to the relevant
British Standard Code of Practice.
Where no British Standard exists, materials
and equipment should be t for their purpose
and of suitable quality and workmanship.
The installation of this outdoor sensor must
be carried out by a competent person in
accordance the rules in force in the countries
of destination. Manufacturer’s instructions
must not be taken as overriding statutory
requirements.
Mandatory WARNING for EEC
countries
The CE mark on this appliance shows
compliance with:
Directive 89/336/EEC on the approximation
of the Laws of the Member States relating to
electromagnetic compatibility.
Directive 73/23/EEC on the harmonisation
of the Laws of the Member States relating to
electrical equipment designed for use within
certain voltage limits.
(A) Installer important information
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Technical data
Power supply 5V
Power consumption <10mW
Cable 2 core insulated for
outdoor use
Electrical protection IP 44
Electrical category Protection class II
Dimensions:
Height 32mm Width 46mm
Depth 86mm (including gland)
Outdoor sensor location
Refer to diagram 2.
The outdoor sensor should be placed on an
external North/North-West facing wall of the
house.
For optimal reading of the outdoor
temperature, the device should be placed
about
2
/3 up the wall for buildings of 3 oors
or less.
For higher buildings, the recommended
position is between the 2nd and 3rd oors. It
should not be installed sheltered from wind or
draughts, nor directly exposed to the sun.
The sensor should be placed at least 1 metre
from openings and away from permanent or
occasional emissions of hot air.
(A) Installer important information (A) Outdoor sensor location
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(A) Outdoor sensor location
E
W
S
N
1m
2/3
1/3
1m
1m
1m
1
2
3
4
1
2
3
1/3
OUTDOOR SENSOR POSITION
(For buildings higher
than three floors)
OUTDOOR SENSOR POSITION
(For buildings three floors or less)
OUTDOOR SENSOR
POSITION
(For buildings three
floors or less)
2/3
Diagram 2
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COVER
SEAL
ELECTRICAL SEALING
GLAND
BACK BOX
(A) Installation
Diagram 3 Diagram 4
BACK BOX
Refer to diagram 3. Remove the front cover,
seal and electrical sealing gland.
Choose the location of the outdoor sensor,
refer to page 6. Fit the back box to the wall,
see diagram 4.
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ELECTRICAL
CONNECTION
ELECTRICAL
SEALING
GLAND
(A) Installation
WARNING: Isolate the boiler from the
electrical supply. A competant person
should make the electrical connections.
Use a cable that complies with the
specications given in Technical data, page
7. Route the cable from the outdoor sensor
to the boiler electrical cartridge at the boiler,
refer to the literature supplied with your
boiler for location and access.
Refer to diagram 5, thread the cable through
the electrical sealing gland. Connect the
cable to the electrical connection, polarity
is not important. Fit the sealing gland, this
secures the cable and gives a water tight
seal. Connect the cable to OTC1 and OTC2
connection in the electrical cartridge at
the boiler, polarity is not important, refer to
diagram 6.
Note:Ultracom hxi & Flexicom hx open vent
system models only. The edge connector will
need to be tted, see diagram 7.
Diagram 5
13668
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OTC 1 and OTC 2
(A) Installation
Diagram 6
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COVER
SEAL
(A) Installation
Diagram 8
13669
Refer to diagram 8, t and secure the seal
and cover.
Diagram 7
14819
Connection at
X41 on main PCB
EDGE
CONNECTOR
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(B) Conguring the Outdoor Sensor
NOTE: If a Glow-worm Climapro or Glow-
worm Climastat is tted, please refer to
section C to congure the outdoor sensor.
Glow-worm Climapro
Glow-worm Climastat
Conguration of the outdoor sensor is
achieved through the Appliance interface
controls on the boiler, see diagram below.
Appliance interface controls
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Choosing and Setting Sensor
Heating Curve.
A gradient must be chosen from the range
shown on page 17, labelled 0-9.
The decision as to which heating curve
should be used is based on two factors:
1. The average minimum outside
temperature of the region.
2. The maximum temperature which the
heating appliance can provide.
NOTE: Consider the level of heat loss in
comparison to typical UK heat loss e.g.
(double glazing, loft insulation and cavity wall
insulation).
Method with example.
The following example describes the
process. The temperatures quoted should
be substituted with real values to nd the
required heating curve.
1. Select the average minimum outdoor
temperature expected in your region where
the sensor will be installed. For example at
the peak of winter the temperature may drop
to -5°C. This would be the value selected
from the Outdoor temperature °C axis.
2. Select the maximum output temperature
of the heating appliance from the Heating
ow temperature (°C) axis. For example this
could be 82°C.
(B) Conguring the Outdoor Sensor
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Using the domestic hot water +/-
button, scroll through to ‘35’.
Press mode button.
(B) Conguring the Outdoor Sensor
Running screen is displayed
Press and hold the mode button. When
the screen is lit orange and displays ‘0’,
release the mode button.
Plot these two points onto the chart.They
intersect the gradient curve labelled 6. The
value 6 would be entered into the boiler via
the diagnostic menu d.45.
Refer to the following diagrams and text to
do this.
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On screen are two blocks of information,
‘d0’ in the lower part of the screen in small
text. In the top centre of the screen, where
the pressure or temperature is normally
shown, is displayed the heating part
load for the appliance (it will be different
for various kW output boilers).
For example this could be ‘18’, ‘38’.
Using the domestic hot water +/- button,
scroll through until ‘d45’ is shown in small
text. Press mode button once. The large
number on the screen then starts ashing.
Using the domestic hot water +/- button
change the value to ‘6’.
Press mode button once.
(B) Conguring the Outdoor Sensor
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(B) Conguring the Outdoor Sensor
50
60
70
80
90
30
40
9
0
1
3
7
4
2
5
6
8
20
Default
curve
Heating flow
temperature (ºC)
Minimum outdoor
temperature (ºC)
Factory default room temperature
setpoint, for weather compensation
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(B) Conguring the Outdoor Sensor
Adjusting room temperature set
point.
By default the outdoor sensor aims to provide
a room ambient temperature of 20°C. In
some situations it may be necessary to have
a lower or higher ambient room temperature
the adjustment is made in terms of an offset
value, which is entered into the appliance via
diagnostic menu ‘d.46’. Refer to the
following diagrams and text to do this.
Method with example.
Running screen is displayed
Press and hold the mode button. When
the screen is lit orange and displays ‘0’,
release the mode button.
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Using the domestic hot water +/-
button, scroll through to ‘35’.
Press mode button.
On screen are two blocks of information,
‘d0’ in the lower part of the screen in small
text. In the top centre of the screen, where
the pressure or temperature is normally
shown, is displayed the heating part
load for the appliance (it will be different
for various kW output boilers).
For example this could be ‘18’, ‘38’.
(B) Conguring the Outdoor Sensor
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If extra heating comfort is required, the room
temperature setpoint can be increased via
diagnostic menu d.46. D.46 provides a
means to offset from the default 20°C room
set point. For example to increase the target
room temperature to 22°C set d.46 to the
value 2.
Range of value d.46: -10 to 10.
(B) Conguring the Outdoor Sensor
For example:
10°C = offset -10
20°C = offset 0
30°C = offset 10
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(C) Conguring the Outdoor Sensor with external
Glow-worm Climapro or Climastat controls
Choosing and Setting Sensor
Heating Curve.
A gradient must be chosen from the range
shown on page 17, labelled 0.2-4.
The decision as to which heating curve
should be used is based on two factors:
1. The average minimum outside
temperature of the region.
2. The maximum temperature which the
heating appliance can provide.
NOTE: Consider the level of heat loss in
comparison to typical UK heat loss e.g.
(double glazing, loft insulation and cavity wall
insulation).
Method with example.
The following example describes the
process. The temperatures quoted should
be substituted with real values to nd the
required heating curve.
1. Select the average minimum outdoor
temperature expected in your region where
the sensor will be installed. For example at
the peak of winter the temperature may drop
to -5°C. This would be the value selected
from the Outdoor temperature °C axis.
2. Select the maximum output temperature
of the heating appliance from the Heating
ow temperature (°C) axis. For example this
could be 82°C.
3. Plot these two points onto the chart.They
intersect the heating curve labelled 2.5. The
value 6 would be entered into the boiler via
the diagnostic menu d.45.
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Making Adjustment on Climastat
Refer to your Climastat instructions, section
6 Commissioning. The heating curve is
adjusted via Menu 2. Acess to this menu
is achieved by following the steps stated in
Adjustments.
Making Adjustment on
Climapro/ Climapro RF
Refer to your Climapro/Climapro RF
Commissioning Instructions. The heating
curve is adjusted via menu COMP which is
accessible by procedure stated in the table in
the Commissioning section.
(C) Conguring the Outdoor Sensor with external
Glow-worm Climapro or Climastat controls
Adjusting Room Ambient
With the heating curve correctly setup for
your specic region, the room temperature
can be adjusted. This is achieved by
increasing or decreasing the setpoint
temperature of your Climastat or Climapro/
Climapro RF roomstat.
For systems with a Glow-worm Climapro.
To adjust the room ambient set point
temperature, refer to sections, Setting the
“Comfort” temperature or Central heating
temporary override - central heating of the
Climapro instructions for use, installation and
servicing literature.
For systems with a Glow-worm Climastat.
To adjust the room ambient set point
temperature, refer to section 2 instructions
for use of the Climapro instructions for use,
installation and servicing literature.
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13682
(C) Conguring the Outdoor Sensor with external
Glow-worm Climapro or Climastat controls
50
60
70
80
90
30
40
4
0.2
0.6
1.2
3
1.5
1
2
2.5
3.5
20
Outdoor temperature (ºC)
Heating flow
temperature (ºC)
Default
curve
Factory default room temperature
setpoint, for weather compensation
Recommended
for UK
Because of our constant endeavour for improvement, details may vary slightly
from those shown in these instructions.
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
0020040798-04 08.09
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