MS Electronics AL-10 User manual

AL-10
AL-10/24V
Product Guide
An-Ligature Thermostat
today, tomorrow and in the future
mselectronics.co.uk

Issue 1.0 2
Product Overview
The AL-10 An-ligature switch is a vandal-resistant thermostat that combines the funconality of a standard set-back
thermostat with a set-forward thermostat all in a single wall-plate style of unit. This gives the end-user the ability to
select between 1 of 3 dierent xed temperature levels (Low, Med, High) to allow greater end-user control when
compared to a set-back thermostat, but its tamperproof features prevent unauthorised modicaon of the
temperature setpoints.
The medium level temperature setpoint (“Med” mode) is adjustable between +12°C and +26°C while the “High” and
“Low” modes are adjustable between 0°C and 7°C above and below the “Med” setpoint. The end-user is able to
select between these 3 modes via the touch-sensive pushbuon. LED indicators on the front plate illuminate to
display which mode the thermostat is operang in.
All setpoints are combined with an adjustable temperature hysteresis (dierenal) which is adjustable to anything
between 0.25°C and 4°C.
Product Wiring
1. Power to the thermostat is provided via the 2-way terminal block.
•Product codes without any sux are mains powered using the terminals labelled L and N (230V AC, 50Hz).
•Product codes with the “/24V” sux are 24V powered using the terminals labelled 24V (24V AC or DC).
2. A voltage-free changeover relay output capable of switching loads of up to 10A, 250V AC (resisve) is provided by
the thermostat at the “NC, COM, NO” terminals.
3. The Common “COM” terminal is connected to the Normally Open “NO” terminal when the sensed room
temperature is above the selected temperature.
4. Conversely, it is connected to the Normally Closed “NC” terminal when the room temperature is sensed to be
below the selected temperature.
Figure 1 Typical wiring example
Ensure the electrical supply is isolated before making any connecons or adjustments.
All electrical installaon and maintenance must be carried out by a competent person. If in doubt, consult a
qualied electrician. Any new wiring must be carried out by qualied personnel in accordance with the current
edion of the IET Wiring Regulaons (BS7671), or those specically appliable to your area.

Issue 1.0 3
Installaon
1. The unit is designed to be mounted in any single-gang Brish Standard paress box (surface or ush mounted)
which has a minimum internal depth of 20mm.
2. Ensure best-pracces are used when choosing a locaon for the thermostat so that opmal thermostac control
is achieved. Do not mount near dras, heaters, radiators, air condioners, in direct sunlight or any other place
where the sensed temperature may be unnaturally inuenced. A good mounng height is typically between 1m
and 2m from the oor.
3. Connect a wiring as shown in Figure 1 (or any suitably appropriate form) via screw-terminals. Make sure to choose
the correct output terminals that are suitable to your applicaon.
4. Adjust the internal thumbwheels to suit the desired operaonal requirements (see below).
5. Ax the thermostat to the paress box using the supplied M3.5 raised-countersunk screws then nally insert the
screw-caps for a neat nish.
6. The screw caps may be removed without damage using a scky puy such as blu-tack.
Operaon
1. Adjust the setpoint (“Setpoint”) dial to the temperature the room is to be regulated to in the ‘Med’ mode
(typically 20°C).
2. Adjust the set-back/set-forward (“S’Bck/S’Fwd”) dial to the number of °C either side of the ‘Med’ temperature
that the ‘Low’ and ‘High’ temperatures are to be (typically 2°C).
3. Set the dierenal (“Di.”) to the total temperature swing either side of the resulng setpoint that the room
temperature is required to keep within (typically 1°C).
4. Example set-up:
Setpoint set to 20°C, Dierenal set to 1°C, Set-Back/Set-Forward set to 2°C.
Low mode - The unit will maintain the temperature between 17.5°C and 18.5°C
Med mode - The unit will maintain the temperature between 19.5°C and 20.5°C
High mode - The unit will maintain the temperature between 21.5°C and 22.5°C
Notes
1. Applying power for the rst me: The output of the thermostat may not switch in response to temperature for
up to 60 seconds aer rst powering on. This is normal behaviour due to a necessary inialisaon phase - please
wait unl this is completed before aempng to test the thermostat. Normal operaon will resume as soon as
the inialisaon phase has completed.
If the unit has already completed inialisaon then short interrupons of power of up to 5 minutes will not trigger
the inialisaon phase and the humidistat will resume normal operaon immediately within a couple of seconds.
Power interrupons longer than 5 minutes may trigger the inialisaon phase again.
Technical Specicaon
Power supply:
220V - 240V AC 50Hz (live/neutral)
22V - 26V AC or DC [/24V variant only]
Output switch rang:
10A, 250V AC 50Hz (resisve)
Output switch type:
Changeover relay (volt-free)
Temperature control:
[Med setpoint]: +12°C to +26°C
[Low/High setpoint]: 0°C to 7°C below/above the Med
setpoint
Temperature dierenal:
0.25°C to 4°C
Sensor dri:
0.15°C over 5 years
Guarantee:
3 Years
Weight:
90g
Dimensions mm:
86mm x 86mm x 27mm
Product Accessories
MSD-154
M3.5 tamperproof screws
MSD-200
Single gang surface paress box 25mm
Ensure the electrical supply is isolated before making any connecons or adjustments.
Ensure the electrical supply is isolated before making any connecons or adjustments.

IMPORTANT INSTALLATION NOTICE
The installaon of this product should be carried out in accordance with the latest IEE
wiring regulaons and all wiring completed by a qualied electrician.
Technical Support
For further help or informaon on this and the other products in the MS Electronics range
visit www.mselectronics.co.uk or call 0333 666 1176.
Alternavely, email [e-mail]
Addional copies of this product guide can be downloaded from our website.
Product Warranty
MS Electronics guarantees all their products against manufacturing defects for
3 years from the purchase date. If your product is found to be faulty, MS Electronics will,
at their discreon, repair or replace the product free of charge.
Note
Any modicaon or damage to the outer casing of the product, as well as any
damage to the product due to abuse or incorrect wiring may invalidate the guarantee.
.
e: [email protected]
t: 0333 666 1176/01708 448566
ENERGY SAVING CONTROLS LTD
Energy Saving Controls reserves the right to alter or change this specicaon without prior noce