Horstmann ServicePlus S21 Installation Instructions

FITTING THE PROGRAMMER
If surface wiring has been used, remove the knockout/insert from the
bottom of the programmer to accommodate it.
Loosen the two 'captive' retaining screws on the bottom of the Backplate.
Now fit the programmer to the Backplate, ensure the lugs on the Backplate
engage with the slots on the programmer .
Swing the bottom of the programmer into position ensuring that the
connection pins on the back of the unit locate into the terminal slots in the
backplate.
Tighten the two 'captive' retaining screws to fix the unit securely.
Then switch on the mains supply.
UPON COMPLETION OF INSTALLATION PLEASE RESET THE PROGRAMMER, BEFORE SETTING THE
HEATING AND HOT WATER OPERATIONS.
RESETTING THE PROGRAMMER
On the ServicePlus press SET and CH buttons together:
Then release the buttons and the programmer will
return to preset factory settings.
The Preset factory settings are illustrated on page 2 of
the USER GUIDE.
The unit can now be programmed to suit the User's requirements.
Please refer to the User's Guide provided.
GENERAL INFORMATION
Before handing over the installation to the user, always ensure that the system responds correctly on
all control programmes and that other electrically operated
equipment and controls are correctly adjusted.
EXPLAIN HOW TO OPERATE THE CONTROLS AND HAND OVER THE USERS OPERATING INSTRUCTIONS TO THE
SPECIFICATION S21 - S27
Contact type: Micro dis-connection
Contact rating: 3(1)Amps 230-240V AC
Power supply: 230-240V AC 50Hz
Operating Temperature range: 0 o C to 40 o C
Double insulated.
Dirt protection: Normal situations.
Enclosure protection: IP30
Purpose of control: Electronic time switch
Independently mounted control for surface mounting.
Operating time limitation: Continuous
Type 1 Action
Battery Reserve: 10 months continuous operation(minimum)
Case material: Thermoplastic, flame retardant
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E N DVIEWO FSERVICEPLUS P R O G R A M M E R
SET
USER.
Dimensions: 150mm x 84mm x 29mm
Display: Liquid crystal
Clock: 12 hour AM/PM
Display time adjustment: 1Minute steps
Switched time adjustment: 10 Minute steps
Programme selection: Auto, On all day, On constant, Off
Operating periods per day: Three for HW, Three for CH -
(Separate daily programmes for S27)
Override: 1 Hour Boost on Hot water
Instant advance on Central Heating
Backplate: Industry Standard Backplate
LEAFLET No P82506
ISSUE 1
Horstmann ServicePlus - Two Channel service interval Programmers
have been developed to facilitate compliance with the Gas Safety
(Installation and Use) Regulations 1998. The device is not intended
to replace the normal servicing regime already in operation, but is
intended to act as a supplementary aid to enabling compliance.
INSTALLATION AND CONNECTION SHOULD ONLY BE CARRIED OUT BY A SUITABLY QUALIFIED PERSON
AND IN ACCORDANCE WITH THE CURRENT EDITION OF THE IEE WIRING REGULATIONS.
WARNING : ISOLATE MAINS SUPPLY BEFORE COMMENCING INSTALLATION
CH
Once the Backplate has been removed
from the packaging please ensure the
programmer is re-sealed to prevent
damage from dust, debris etc.
The Backplate should be fitted with
the wiring terminals located at the top
and in a position which allows a total
clearance of at least 50mm around the
programmer.
DIRECT WALL MOUNTING
Offer the plate to the wall in the position where the programmer is to be mounted, remembering that
the Backplate fits to the left hand end of the programmer. Mark the fixing positions through the slots
in the Backplate(Fixing centres 60.3mm), drill and plug the wall, then secure the plate in position. The
slots in the Backplate will compensate for any misalignment of the fixings.
WIRING BOX MOUNTING
The Backplate may be fitted directly on to a single gang steel flush wiring box complying with BS4662,
using two M3.5 screws. ServicePlus programmers are suitable for mounting on a flat surface only, they
must not be positioned on a surface mounted wall box or on unearthed metal surfaces.
All necessary electrical connections should now be made. Flush wiring can enter from the rear through
the aperture in the Backplate. Surface wiring can only enter from beneath the programmer and must
be securely clamped.
The mains supply terminals are intended to be connected to the supply by means of fixed wiring.
The recommended cable sizes are 1.0mm
FITTING THE BACKPLATE
ELECTRICAL CONNECTIONS
2 or 1.5mm 2 .
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