Horstmann 425 range Installation Instructions

Horstmann 425 range Installation Instructions
Horstmann 425 range
Installation Instructions
The 425 range of traditional electro-mechanical programmers offer a simple
yet effective way of controlling hot water and central heating with the twin
circuit Diadem and Tiara also allowing independent control of both.
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
1
END VIEW OF 425 ELECTRO-MECHANICAL PROGRAMMER
Fitting the backplate:
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 the
relevant clearances around the programmer
(see diagram)
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 right hand end of the programmer.
Mark the fixing positions through the slots, (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 also be fitted directly on to a single gang steel flush wiring box complying
withBS4662, using two M3.5 screws.
425 electro mechanical 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.
ELECTRICAL CONNECTIONS
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 1.0mm² or 1.5mm² for a Diadem/Tiara and 1.5mm² for a
Coronet.
425 Electro-Mechanical Programmers are double insulated and do not require an earth connection
but an earth terminal is provided on the backplate for terminating any cable earth conductors.
Earth continuity must be maintained and all bare earth conductors must be sleeved. Ensure that no
conductors are left protruding outside the central space enclosed by the backplate.
2
Diadem/Tiara:
When used to control MAINS VOLTAGE SYSTEMS
Terminals L, 2 and 5 should be electrically
linked by means of a suitable piece of sleeved
conductor. When used to control EXTRA LOW
VOLTAGE SYSTEMS these links MUST NOT be
fitted.
E
N
L
1
2
N
L ON
3
4
OFF ON
TIMED
OUTPUT
HW
MAINS
SUPPLY
5
6
OFF
TIMED
OUTPUT
CH
Coronet:
When used to control MAINS VOLTAGE SYSTEMS
Terminals L and 5 should be electrically linked
by means of a suitable piece of sleeved
conductor. When used to control EXTRA LOW
VOLTAGE SYSTEMS these links MUST NOT be
fitted.
E
N
L
N
L
MAINS
SUPPLY
1
2
3
4
5
ON
6
OFF
TIMED
OUTPUT
Interlocking - Diadem and Tiara only
If a Diadem or Tiara is used on gravity hot water/pumped central heating systems the selector
slides must be interlocked for correct programme selection.
This is achieved by rotating the interlock located at the top of the HW programme slide. First select
‘Twice’ on the HW selector slide, then select the Off position on the CH selector slide; this will reveal
the screwdriver slot in the interlock.
Position the screwdriver in the slot and rotate anti-clockwise until the slot is almost horizontal (a
stop will prevent the interlock from being turned too far).
Check for correct operation of programme slides. This should result in the HW selector slide moving
up to match any CH selection (twice, all day and 24 hours).
When the CH slide switch is returned to any of the lower positions (all day, twice and off), the HW
slide switch will stay in the uppermost position reached and will have to be manually moved to the
desired new position.
3
Typical wiring diagrams
Example circuit diagrams for some typical installations are shown below. These diagrams are
schematic and should be used as a guide only.
Please ensure that all installations comply with the current IEE regulations.
For reasons of space and clarity not every system has been included and the diagrams have been
simplified (for example some earth connections have been omitted)
Other control components shown in the diagrams i.e. valves, room stats etc are general
representations only. However the wiring detail can be applied to the corresponding models of most
manufacturers, e.g. Horstmann, Honeywell, Danfoss Randall, ACL Drayton etc.
Cylinder and Room Thermostat Key:
C = Common CALL = Call for heat or break on rise SAT = Satisfied on rise N = Neutral
E
w.
2
5
4
CALL N
4
3
CSAT
N
L
C
6
SAT
CALL
SAT
COMBINATION BOILER TERMINALS
FOR PRECISE TERMINAL
CONNECTION INFORMATION
PLEASE REFER TO BOILER
MANUFACTURER INSTRUCTIONS
E
N
L
425 Coronet controlling
typical combination boiler
COMBINATION BOILER TERMINALS
installation via room thermostat.
L
N
1
2
5
4
3
ROOM
STAT
L E
MAINS
SUPPLY
N
MAINS
SUPPLY
EL
N
L
L
N
N
1
2
3
N
L
N
SAT
5
ROOM
STAT
L
PUMP
L
C
4
CALL N
BOILER
N
N
CALL
C
6
SAT
ROOM
STAT
L
MAINS
SUPPLY
EL
N
425 Diadem/Tiara controlling gravity hot water with
pumped heating via room stat
eat
1
3
4
3
CYL
STAT4
2
L
N
1
2
5
N
CALL
N
CYL
STAT
L
BOILER
SAT
ROOM
LSTAT
N
SAT CALL
CYL
STAT
L
N
MAINS
SUPPLY
1
N
L
N
L
2
1
3
2
3
2
3
EL
N
N
1C
CYL
STAT
N
L
L
N
1
L
2
5
4
3
425 Coronet controlling gravity hot water with
Eheating via room stat and cylinder stat.
pumped
MAINS
N
5
6
L
4
N
1
2
3
SUPPLY
MAINS
SUPPLY
EL
N
MAINS
SUPPLY
EL
N
L
N
1
C
2
N
4
3
5
CYL
STAT
C
N
L
C
CALL
N
SAT CALL
CYL
STAT
BOILER
N
N
L
CALL
BOILER
SAT
N
C
6
6
5
6
E
5
ROOM
6
SUPPLY
MAINS
NL
SUPPLY
N
CYL
STAT
CALL
CALL
L
CALL
N
N
L
L
PUMP &
PUMP &
BOILER
SAT
C
SAT
CYL
STAT
SAT
STAT
ROOM
STAT
CALL
N
CALL
MAINS
SUPPLY
SAT
C
SAT
L
1
2
3
L
1
2C
3
ROOM
STAT
SAT
EL
N
VALVE
ZONE
VALVE
ZONE
VALVE
BOILER
N
L pumped
425425
Tiara
controlling
fully
two
Tiara
controlling
fully
pumpedsystem
system using
using two
PUMP &
motorised
2 port
valves
with
via
motorised
2 port
valves
withauxiliary
auxiliaryswitches
switches via
BOILER
room
statstat
andand
cylinder
room
cylinderstat.
stat.
425 Tiara controlling fully pumped system using two
motorised 2 port valves with auxiliary switches via
room stat and cylinder stat.
5
4
CYL
STAT
CALL
CALL
CALL
N
N
L
L
PUMP &
PUMP
&
BOILER
C
N
5
C
CALL
SAT
C
ROOM
STAT SAT
SAT
SAT
ROOM
6STAT
CALL
N
SAT
CYL
STAT
6
C
4C
C
ROOM
STAT
CALL
SAT
CALL
CALL
ZONE
ZONE VALVE
VALVE
CALL ZONE
VALVE
ZONE
VALVE
ZONE
VALVE
2
6
CALL
CYL
STAT
C
3
C
L
5
4
ROOM
CALL
STAT
SAT
6
ZONE
VALVE
SAT
N
CALL
CYL
STAT
ROOM
STAT
C
SAT
ZONE
VALVE
SAT
SAT
FROST
STAT
IF
FITTED
C
2
N
3
CALL
SAT
CYL
STAT
C
N
CALL
SAT
CYL
STAT
SAT
CYL
STAT
CALL
N
4C
6
SAT
ROOM
STAT
C
SAT
ROOM
STAT
SAT
ROOM
STAT
N
L
PUMP
L
BOILER
N
5
CALL
N
L
PUMP
L
BOILER
controlling
gravity hot water with
pumped heating using a 2 port spring return valve with
MAINS
SUPPLY
FROST
STAT
IF
FITTED
MAINS
SUPPLY
N
L
W
BL
FROST
STAT
IF
L
L
W
0
BL
GR
0
1
2
3C
N
CYL
STAT
W
BL
CALL
CALL
0
GR
C
4C
CYL
STAT
C
MID POSITION
MID POSITION VALVE
VALVE
N
EL
N
N
CALL
C
CALL
SAT
SAT
CYL
STAT
5
C
SAT
CALL C
FROST
STAT
IF
CALL
FITTED
ROOM
STAT
CALL
SAT
FROST
STAT
IF
FITTED
C
FROST
STAT
IF
FITTED
CALL
SAT
ROOM
STAT
6
ROOM
STAT
SAT
CALL
N
L
PUMP &
BOILER
N
N
L
PUMP &
BOILER
L
GR
port)
425
Tiara controlling
fullyPUMP
pumped
system
using a mid
&
425
Tiara
controlling
fully pumped
system
using
a mid
BOILER
MID POSITION
VALVE position valve via room stat and cylinder stat.
position
valve via room stat and cylinder stat.
425 Tiara controlling fully pumped system using a mid
position valve via room stat and cylinder stat.
5
5
4
6
N
N hot
Lgravity
L water with
425 Diadem/Tiara controlling
ZONE VALVE
changeover
auxiliary switch PUMP
on the hot water circuit.
pumped heating using a 2BOILER
port spring return valve with
changeover auxiliary switch on the hot water circuit.
425 Diadem/Tiara controlling gravity hot water with
5
6
L spring
4
1
2return
3 valve
pumped heating using N
a 2 port
with
changeover auxiliary
switch on the hot water circuit.
E N L 1 2 3 4 5 6
MAINS
N
C
N
E
SUPPLY
ZONE
FITTED
VALVE
BOILER
1
BR
BL
CALL
W
GR
0 CALL
BR
BL
W
BR
GR
BL
0ZONE VALVE
W
GR
VALVE
425ZONE
Diadem/Tiara
0
C
Fully
pumped
roomstat
(2
N system
L
425
Tiara
controlling
fully using
pumped
system and
usingtwo
room
PUMP &
spring
return
zone
valve with
switches.
stat
and two
(2
port) spring
returnauxiliary
zone valve
with
BOILER
auxiliary switches
425 Tiara controlling fully pumped system using room
stat and two (2 port) spring return zone valve with
auxiliary switches
L
N
L
STAT
CYL
STAT
C
ZONE
VALVE
ZONE
VALVE
N
SAT
N
L
ROOM
STAT
CALL
ZONE
VALVE
ZONE
N
N
1
N
EL
N
L
EN
C
L
N
PUMP &
MAINS
SUPPLY
SATL
425 Diadem/Tiara controlling gravity hot water with
5
6
L
4 stat.
1
2 cylinder
3
pumped heating N
via room
stat
and
5
5
C
N
C
BOILER SAT
CALL
CALL
CYL
STAT
MAINS
SUPPLY
N
N
L
L
425 Diadem/Tiara
controlling
gravity
hot water with
BOILER
PUMP
pumped heating via room stat and cylinder stat.
4
ROOM
STAT
4
3
PUMP & fully pumped system via room
425 Coronet controlling
BOILER
stat,cylinder stat and using a 2 port spring return valve
5
Lcircuit.
4
N
1
2
3
with auxiliary switch on heating
425 Coronet controlling fully pumped system via room
E using a 2 port spring return valve
stat,cylinder
stat and
MAINS
C
N Non heating
5 N 6C
L
4
1 circuit.
2
3
with auxiliary
switch
SUPPLY
L
E
6
PUMPROOM
CALL
PUMP
2
6
C
ZONE
SAT
STAT
N
1
CALL
ROOM
STAT
CALL
L
N
5
4
3
N
L
425 CoronetPUMP
controlling
fully pumped VALVE
system via room
&
stat,cylinderBOILER
stat and using a 2 port spring return valve
with auxiliary
on heating circuit.
N switch
L
C
CALL CYL SAT
L
C
2
N
L
425 Coronet controlling
gravity hot
water with
BOILER
PUMP
pumped heating via room stat and cylinder stat.
4
4C
EL
N
N
425 Coronet controlling
gravityN hot
L
L water with
SAT PUMP
CALL
SAT
BOILER
pumped heating
via CALL
room stat
and cylinder
stat.
MAINS
C
MAINS
SUPPLY
SAT
ROOM
STAT
425 Diadem/Tiara controlling gravity hot water with
pumped heating via room stat and cylinder stat.
E
MAINS
N E
SUPPLY
MAINS
L N
SUPPLY
E
N
C
PUMP
N
C
L
MAINS
SUPPLY
1
E
N
6
ROOM
STAT
6
5
L
N
6
C
SAT
N CALL
C
C
CALL
425 Diadem/Tiara
controlling gravityPUMP
hot water with
BOILER
pumped heating via room stat
heat
at
5
4
3
C
SAT
CALL
L
N
L
BOILER
425 Diadem/Tiara controlling
gravity PUMP
hot water with
pumped heating via
stat and cylinder
stat.
N room
N
L
L
e.g.
tat
2
MAINS
SUPPLY
N
6
425 Coronet controlling typical combination boiler
E via room thermostat.
installation
N
C
MAINS
N
5
6
L
4
N
1
2
3
SUPPLY
ied
sctions
wn
m
ntions
mcan
gtions
e.g.
can
E
N
REMOVE
LINK IF
FITTED
E
N
L
425 Coronet controlling
typical combination boilerREMOVE
LINK IF
COMBINATION
BOILER TERMINALS
FITTED
installation via room
thermostat.
d and
ied
not
dctions
and
MAINS
SUPPLY
1
E
N
L
BE LINKED
CALL
ROOM
STAT
MAINS
SUPPLY
6
TERMINALS L - 5
SHOULD NOT
BE LINKED
REMOVE
TERMINALS L - 5
LINK IF
SHOULD NOT
FITTED
ROOM
STAT
N
5
L
N
6
TERMINALS L - 5
SHOULD NOT
BE LINKED
C
2STAT 3
1
5
4
3
ROOM
1
L
N
EL
E
FOR PRECISE TERMINAL
MAINS
CONNECTION INFORMATION
N
PLEASE
REFER TO BOILER
SUPPLY
MANUFACTURER INSTRUCTIONS
L
below.
ations
and
ations
2
L
N
L
me
FOR PRECISE TERMINAL
grams
CONNECTION INFORMATION
E
below.
PLEASE REFER TO BOILER
ns
MAINS
MANUFACTURER INSTRUCTIONS
N
SUPPLY
and
me
nsnot
1
N
gramsMAINS
N
SUPPLY
d
L
N
BOILER LIVE OUT
BOILER LIVE OUT BOILER LIVE OUT
ms
5
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 top of the unit.
Now fit the programmer to the backplate and line the lugs
on the programmer with the flanges on the backplate.
Swing the top of the programmer into position ensuring that the
connection blades 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.
END VIEW OF 425 ELECTRO-MECHANICAL PROGRAMMER
The tappets can now be set to suit the user’s requirements.
Please refer to the user’s guide provided.
End view of 425 electro
mechanical programmer
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 USER.
5
Specification: Coronet, Diadem and Tiara
MODELS:
Coronet: Single Circuit 13(6)A Diadem: Double Circuit 6(2.5)A Tiara: Double Circuit 6(2.5)A 230V AC
230V AC
230V AC
Contact type: Micro disconnection
(Voltage free, Coronet and Tiara only)
Motor Supply: 230-240V AC 50Hz
Double Insulated:
Enclosure Protection: IP 20
Max. Operating Temperature: Coronet 35°C
Diadem/Tiara 55°C
Dirt protection: Normal situations.
Independently mounted control for surface mounting.
Purpose of Control: Electronic Time Switch
Operating time limitation: Continuous
Type 1 Action
Case material: Thermoplastic, flame retardant
Dimensions: 153mm x 112mm x 33mm
Clock: 24 hour
Programme selection: 24 Hours, On all day, Twice, Off
Operating periods per day: Two
Override: Instant advance
Backplate: 9 Pin terminal connection
Email: [email protected] Website: www.horstmann.co.uk
Horstmann, Bristol BS4 1UP
Tel: 0117 978 8700 Fax: 0117 978 8701
Horstmann is a trading name of Secure Controls (UK) Ltd., a wholly owned subsidiary of Secure International Holdings PTE Ltd.
Registered office: Secure House, Moorside Road, Winnall Trading Estate, Winchester, Hampshire SO23 7RX.
Registered in England No. 457553
© MARCH 2012: Secure Controls (UK) Ltd: All rights reserved.
The company reserves the right to alter product specifications without notice.
6
Leaflet number P27673 – Issue 17
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