Sensing AC/DC N LOAD 24V-230V element
fuse Temperature Suitably rated
2 wire connection. No neutral. Load Bi-metal = 0.6A to 6A. Typically for higher loads RTS8: (i.e. electric heating)
Range Switch rating Switch type Part No. 24028 Differential Wiring regulations

10C to24V-230V AC/DC 30C

Suitably rated
6 (2) A fuse 230v AC/DC 24-230v AC/DC S.P.S.T. 1C typical
Digital display situated above dial for ease of reading
Combi-Stat Product Combi-Stat
Designed for fixed wiring only to comply with the current I.E.E. regulations
Digistat+ Product Digistat+

Part No. 30002

Mounting Wiring
Suitable for surface or conduit box mounting Relay: Designed for fixed wiring only, to comply with current IEE regulations.

Digistat+RF

Room Thermostat Wireless System
Draytons stylish wireless Digistat+ RF with tactile, audible & visual feedback. Featuring a familiar dial control with a digital display to show that the temperature has been set accurately every time. User adjustable set-back feature - at the push of a button User adjustable Min/Max temperature setting Digital Display situated above dial for ease of reading The product can be configured with a minimum temperature setting to protect the vulnerable.

SCR Receiver Wiring

Easy Electronic Clock Thermostats

Easy 2, Easy 3

Drayton presents a range of simple-to-use programmable controls with traditional analogue clock face.
Features: Separate dials for comfort and set-back temperatures
Hinged cover to give neat appearance

Easy 2

Easy 3
Model Power supply Radio frequency: Radio Signal Range: Digistat+ RF 2 x AA Size, 1.5V alkaline batteries 433 MHz 30m typically. The range may be affected by the composition / density and number of walls between the Digistat RF and SCR.
Model Temperature Setting Range: Room Temperature Set-Back Temperature Frost Protection Contact (Relay) Operating Voltage Switching Current/Voltage Hysteresis LED Indicators Power Reserve Protection Class of Housing Temperature Sensor Remote Sensor Dimensions Easy 2 Battery 5 to 300C 5 to 300C (setting under cover) ~ 50C (fixed) 1 change-over, voltage free 1.5V Battery (service life~2 years) 10 mA to 10 A cos = 1 max. 4A cos = 0.6 ~ 0,5 K Easy 3 Mains 5 to 300C 5 to 300C (setting under cover) ~ 50C (fixed) 1 change-over, voltage free 230 V AC 50/60 Hz 10 mA to 16 A * cos = 1 max. 4A cos = 0.6 ~ 0,5 K; * Call for heat / Set-back ~ 100 h IP 30 / insulated NTC Internal (remote sensor F or F optional, max 50m) 160 x 80 x 36mm * at 16 A and operation without remote sensor: hysteresis ~ 2,5 K

Temperature Range: Control Accuracy: Ambient Temperature: Features: Conventional dial adjustment Tactile dial 1C setting steps Tactile & audible feedback via click of the dial. Visual feedback via digital display Set-back feature Min/Max temperature setting Battery powered Digital display situated above dial for ease of reading Digistat RF Wireless Systems Product Part No. Digistat+RF ROOM STAT+SCR RF601 Digistat+RF TRANSMITTER (SPARE) 31003 Digistat+ SCR RECEIVER SPARE 22149 Mounting: Wiring: Applicable Standards:
5 to 30C + 0.5K @ 20C Operating 0C to 50C / Storage 20C to 55C EN60730-1:2001; EN60730-2-7:1992 73/23/EEC Low Voltage Directive 89/336/EEC EMC Directive EN300220-1 Suitable for surface or conduit box mounting No wiring required
Single Channel Receiver (SCR) Power supply: Switch Type & Rating: Wiring: Reception Frequency: 230v AC 50 Hz SPDT (voltage free) 2(1)A 230VAC or 23VAC(DC) Designed for fixed wiring only, to comply with current IEE regulations. 433 MHz
IP 30 / insulated NTC Internal

160 x 80 x 36 mm

Easy Electronic Product Easy 2 Easy 3

Clocks Part No. 51 111

Programmable Room Thermostats Wired & Wireless
5 operational modes via setting dial for Comfort / Set-back / Automatic / Frost protection / Off
Digistat+2 & Digistat+3 Programmable Thermostats
Drayton brings you a range of Digistat+ programmable room thermostats. They are easy to install, easy to use and offer a supreme level of heating control and comfort. The range comes with a wealth of big pluses for both installers and users.
Features: Easy to use Easy to programme using only 4 buttons Memory-saver programme and clock never needs resetting in the event of power loss Automatic summer, winter time change Pre-set clock 3 built-in standard pre-defined programmes A choice of 2, 4 or 6 time/temperature events/day (user selectable) Easy to read large LCD display (showing actual time and room temperature) Easy temperature override Holiday mode Manual mode Temperature limit locks (high & low) Intelligent Delayed Start option (see page 53) 12/24 hour clock choice Contemporary design Part L compliant (Part J in Scotland) Suitable for combi boilers, electric heat, hydronic under-floor and zoning Battery life Switch rating Heating (switch N.O.) Switch type Min. recommended current Ambient temperature Ambient humidity (non condensing) Temperature range Accuracy (between 7C & 32C) Timing resolution Temperature resolution Rated impulse voltage Ball pressure test Pollution situation Protection level Wiring: 16(2)A 230 Vac SPDT (voltage free contacts) 10mA @24Vac (inductive) Operating 0C to 50C Storage 20C to 85C Operating 25% to 85% Storage 15% to 95% 0C to 32C 0.5C 1 minute 0.1C 2.5KV 75C Degree 2 IP30 Designed for fixed wiring only, to comply with IEE wiring regulations

Product Digistat+3RF TRANSMITTER (SPARE) Digistat+ SCR RECEIVER SPARE

Part No. 22092 22149

programmed differently.

Lifestyle LP and LPSi

Electronic Time Controls
With all the features of Draytons market leading LP time controls, the LPSi features a service interrupter to alert householders when their boiler service is due. Thirty days before the boiler is due to be serviced the LPSi enters a warning period. During this time, the backlit display flashes providing a visual warning and the resident can read when the service is due on the display. All buttons/programming features are fully functional during this time. If the boiler is not serviced despite the warnings, the LPSi will then reduce the comfort level in the property to a safe but
Features: Easy to use Automatic summer/winter time change Memory saver programme and clock never need resetting in the event of loss of power Easy to read, backlit screen New contemporary design Pre-set clock On/once/timed/off switching options 3 timing periods per day Programme advance buttons All programmers suitable for fully pumped or gravity heating systems Timeswitches are ideal for combination boilers and Control of additional zones etc. (volt free contacts) Universal backplate Part L Compliant (Part J in Scotland) Proven reliability Extra features for LPSi: Service period selectable LP & LPSi Electronic Time controls Product Part No. LP111 Timeswitch 25477 LP711 Timeswitch 25478 LP112 Programmer 25473 LP241 Programmer 25474 LP522 Programmer 25475 LP722 Programmer 25476 Reduces comfort level Warning period Visual indication on LCD Audible alarm Backlit display flashes providing visual warning Separate reset unit Product LPSi Reset Unit LP241Si Programmer LP522Si Programmer LP722Si Programmer LP111Si Timeswitch LP711Si Timeswitch Part No. Standard back-plate Rating Ambient temperature Battery Type Without mains power Timing resolution Wiring Maintenance
LP & LPSi Electronic Time Controls
features plus a contemporary style, while still maintaining their popular large buttons, streamlined, design and ease of use.
uncomfortable level, encouraging the resident to call an engineer to check their heating system. Draytons Lifestyle LP time controls have a series of great
LPhour programmer (common timings for heating and hot water)
LP241/LP241Si 24 hour programmer (separate timings for heating and hot water)
LP522/LP522Si 5 day/2 day programmer (separate timings for heating and hot water)
LP722/LP722Si 7 day programmer (separate timings for heating and hot water)
Programmer internal wiring
For enhanced levels of combi-boiler controls LP timeswitches are available:
Timeswitch internal wiring
LP111/LP111Si 24 hour timeswitch
LP711/LP711Si 7 day timeswitch
Voltage Output 230V AC 50Hz Programmers: 230V 50Hz Timeswitches: According to supply to common terminal - voltage free contacts 2 (1) A 230V AC each switch Operating: 0C to 50C Storage: -20C to 50C Lithium Display: Blank Time and programme: Always retained 1 minute Designed for fixed wiring only, to comply with current IEE regulations No user maintenance should be attempted

The TRV4 range Range/ Kv Values Valve Bodies Kv is flowrate in m3/h at a differential pressure of 1 bar Kv = Q p Q = Flowrate m3/h p = Differential pressure bar NB: 8mm and 10mm valves comprise of a standard 15mm body with reducers. Connections Compression fittings meet EN 1254-2. 1/2 BSP threaded radiator connections new standard.
Heads Integral heads are available as a separate item. Conversion head available to fit TRV3 bodies Remote sensing heads with either a 2m or a 6m stainless steel capillary supplied with a white plastic wall mounting enclosure for its sensing bulb LST radiators For details of the Drayton EB Body range with includes 38, 12, 34, 1, variants and side angle bodies for LST radiators, please refer to our data sheet D40 available on request. Our price list contains reference to all models.
TRV4 Thermostatic Radiator Valve TRV4 Thermostatic Radiator Valve

Application

Suitable for domestic radiators and towel rails, providing an elegant chrome finish with either compression connections 15mm, 10mm, 8mm, or pushfit connection providing a means of connection to plastic and copper pipe.
TRV4-All Chrome, ideal for towel rails and designer radiators
Dimensions in millimetres Integral

Cutaway TRV4

Range limiting

Remote sensing

Heads Maximum Sensor Temperature Setting numbers * Frost protection Temperature setting range Sensitivity Maximum closing force Hysteresis Water temperature influence Differential pressure influence Response time Valves Maximum test pressure Maximum flow temperature Maximum Static Pressure Valve bodies with compression fittings: Pushfit connection: Maximum differential pressure To ensure valve closure Maximum recommended differential pressure 0.2 bar To ensure low noise operation Note: Technical data refers to Drayton head and valve body combinations 10 bar at 65C, 6 bar at 110C 3 bar at 92C 1 bar 20 bar Valve bodies: 110C Pushfit connection: 92C 50C Integral sensor 1 to 5 then MAX Integral and Remote sensor below 8C Integral and Remote sensor 1 to max = approx 10C to 30C 0.22mm/C 70N Integral sensor 0.4 K Integral sensor 0.8 K Integral sensor 0.15 K Integral sensor 20 minutes Remote sensor 0.6 K Remote sensor 0.4 K Remote sensor 0.10 K Remote sensor 20 minutes Remote sensor 1 to 7 then MAX
Suitable for plastic pipes 15mm within +/- 0.1mm of nominal size (BS7291 Class S) and copper pipe to BS EN 1057. The pushfit connection is suitable for use on central heating systems and can withstand temperatures up to 110C intermittently for short periods.

p mbar

The bodies can be used with any of the Drayton thermostatic heads with a M30 x 1.5 ring nut or the wheelhead/ lockshield cap.

Description of use

Pre -se t

Flow capacity graph.

1 3/8" 2 1/2" 3 15mm 4 3/4" 3/8" 6 1/2", 15mm 6 3/4"

Flow l/h

a (2K) 0.16 0.48 0.64 0.16 0.48 0.68 0.16 0.48 0.80 0.92

Pre-setting

Key features at a glance Non sticking valve internals Pre-setting as standard on all valve bodies Easy to set range limiting Frost protection setting Half/full click stop setting Internals replaceable (without draining down) Range of adapters available for plastic (PEX) and multi layer pipe Radiators can be balanced from the TRV Conversion head available

Single pipe valves

Dimensions 12 BSP 34 BSP 1 BSP Angle HHLD1 Rp12 Rp34 Rp1 D2 R12 R34 R1 HHLStraight LD1 Rp12 Rp34 Rp1 D2 R12 R34 R1

EB 38

EB 15mm & 12

EB 34

Two pipe valves
Dimensions Angle H1 H2 L1 D1 D2 Straight and corner angle H1 H2 L1 L2 D1 D2 Side angle H1 H2 L1 L2 D1 Straight and elbow D2 H1 H2 L1 L2 D1 D2
38 BSP (DN10) 54 Rp38 R33 Rp38 R44 Rp38 R38 15mm (compression) RR42 15

Rp38 RR12

EB 12 ASP/SSP EB 34 ASP/SSP EB 1 ASP/SSP

Pre-setting Nr.

Kv (1K) 0.10 0.14 0.19 0.25 0.28 0.28 0.10 0.14 0.19 0.25 0.28 0.32 0.10 0.14 0.19 0.25 0.28 0.35
Kv (2K) 0.10 0.14 0.22 0.35 0.47 0.47 0.10 0.14 0.22 0.35 0.47 0.57 0.10 0.14 0.22 0.35 0.47 0.66 1.40 1.40 1.40
Kvs (max) 0.10 0.14 0.22 0.38 0.66 0.79 0.10 0.14 0.22 0.38 0.66 1.01 0.10 0.14 0.22 0.38 0.66 1.50 2.50 4.50 5.00
12 BSP (DN15) 58 Rp12 R37 Rp12 R48 Rp12 R97 Rp12 RBSP (DN20) 66 Rp34 R40 Rp34 R34 Rp34 R34 Rp34 R34
Kv is flowrate in m3/h at a differential pressure of 1 bar Kv Q p = = = Q p Flowrate m3h Differential pressure bar

Automatic By-Pass Valve

The automatic by-pass valve is designed to maintain a minimum flow rate in heating systems fitted with thermostatic radiator valves.

HTS3 Cylinder Thermostat

The HTS3 cylinder thermostat controls the domestic hot water temperature to suit your lifestyle and gives energy savings when set between the recommended 60C to 65C. Technical data
Sensing element Temperature range Switch rating Switch type Differential Fixing Wiring Bi-metal 3 (1) A 230v AC S.P.D.T. 8C approximately Plastic coated spring wire, hook and eye To comply with the current I.E.E. regulations 50C to 80C
Application The automatic by-pass valve is designed to maintain a minimum flow rate in heating systems fitted with thermostatic radiator valves. When all the TRVs are open the bypass valve remains closed, allowing the full boiler output to circulate around the heating system. As TRVs sense that selected room temperatures are reached and start to close, the by-pass valve starts to open, maintaining optimum flow through the boiler and so eliminating possible damage to the boiler and pump. Installation of the by-pass valve will minimise noise often experienced when flow through the boiler decreases.

Installation The by-pass should be installed between the flow and return with flow in the direction of the arrow. If a higher capacity is required for large installations it is possible to install two or more valves in parallel. Setting The valve can be manually adjusted from 0.05 Bar to 0.5 Bar. The graph opposite shows the flow curves of the settings at 0.1, 0.2, 0.3, 0.4 and 0.5 Bar. A setting of 0.2 0.3 Bar is sufficient for most common installations. If the differential pressure is too low or the bypass flow is too high, the pressure setting should be increased. If the differential pressure is too high or the by-pass flow too low, the pressure setting should be decreased.
Features: Easy fixing to all hot water cylinders Suited to all systems Tamper resistant Double insulated
Features: Maintains optimum flow Automatic operation Set and forget Ensures quiet operation High quality Reliable
Connections Setting range Working pressure Working temp. 22mm compression joints 0.05 to 0.5 Bar 16 bar 120C Intermittent
HTS3 Cylinder Thermostat Product Part No. HTS3 13007

Satisfied

Automatic Bypass Valve Product 22mm Angle auto bypass valve

Part No. 020

Cylinder and Pipe Thermostats

Digistat+C RF

Cylinder Thermostat Wireless Systems
Draytons stylish new wireless Digistat+C RF with tactile, audible & visual feedback. Featuring a familiar dial control with a digital display to show that the temperature has been set accurately every time. User adjustable Min/Max temperature setting Digital Display situated above dial for ease of reading The Digistat+C RF cylinder thermostat controls the domestic hot water temperature to suit your lifestyle and gives energy savings when set between the recommended 60C to 65C.
Digistat+C RF Cylinder Thermostat SCR Receiver
Tapstat Cylinder Controls
Self-acting tapstats control domestic hot water temperatures on gravity or pumped primary systems preventing scalding and fuel wastage

15mm 3 way

Installation
Digistat+C RF Room Unit/Sensor Power supply Radio frequency Signal range 2 x AA Size, 1.5v alkaline batteries 433 MHz 30M typically. The range may be affected by the composition / density and number of walls between the Digistat RF and SCR. Temperature range 40 to 70C 8C Operating 0C to 50C / Storage 20C to 55C Applicable standards EN60730-1:2001; EN60730-2-7:1992 73/23/EEC Low Voltage Directive 89/336/EEC EMC Directive EN300220-1 Mounting Wiring Room Unit: Suitable for surface or conduit box mounting Sensor: Direct mounting onto cylinder Room Unit: No wiring required Sensor: 0.5mmcore cable between sensor and Digistat+C RF transmitter Digistat SCR Receiver Power supply Switch type Switch rating Wiring 230v AC 50 Hz SPDT (volt free) relay 2(1)A 230v AC or 24v AC/DC Designed for fixed wiring only, to comply with current IEE regulations Control accuracy Ambient temperature

LWC1 LWC3

Draytons sister company has over 30 years experience in the underfloor heating market in Germany. This shared knowledge has ensured that the range of UK underfloor heating products will complement and add to the already leading portfolio of heating controls trusted and chosen by heating professionals throughout the country.

Under oor schematic

Underfloor Heating Controls Hydronic & Electric

New S+

p or S f

2009 ing

Comfort Controls Wired
The RTR-E 6124 room thermostat has a high control accuracy that can be used to control temperature in individual rooms and zones.
Features: Automatic setback via external connection strip EVU 230 PL Bi-metal thermostat with thermal feedback and high precision
Comfort Controls Thermal Actuators
The next-generation TS+ Thermal Actuator built on the success of the TS Actuator. Smaller to fit on new compact manifold and with improved water ingress protection.
TS+ Thermal Actuator - Coming Soon
RTR-E 6124 Room Thermostat
Features: Water and dust resistant to IP54 rating Can be mounted in any orientation even upside down Provides visual confirmation of valve position Standard connection (M30 x 1.5mm) to manifolds Valves can be opened and closed by hand, great for commissioning and service Stylish and compact

Graphic Illustration

Temperature limiting and locking under setting dial
The EV wired connection strips link room thermostats to the thermal actuators allowing independent temperature control of each zone.
Features: 6-zone connecting strip EV 230 PL Wall mounting on DIN rail Easy to connect without screwdriver Dimensions: 305 x 90 x 60mm LED mains indicator Pump logic and protection For use with room thermostats with set-back function e.g RTR-E 6124

EV 230 PL

TS Thermal Actuator is used in conjunction with room thermostats to control individual zones or rooms.
Features: Provides visual confirmation of valve position Standard connection (M30 x 1.5mm) to manifolds Valves can be opened and closed by hand, great for commissioning and service Robust & reliable design

TS Thermal Actuator

Features: As EV 230 PL with the following additional features 7-day programming of up to 6 independent zones Backlit LED display Each zone can be timed independently Real-time clock Automatic summer/winter time setting 5 preset programs Holiday function

EV-U 230 PL

Comfort Controls Product Part No. TS 5.11/TS+ 5.11/RTR-E 133 EV 230 PL EV-U 230 PL 141 533
Distinct connections and large connecting space for quick and easy installation

Comfort Controls Wireless
The wireless Instat 868-r is an electronic programmable thermostat with a large LCD digital display which shows actual temperature and time.
Features: Easy commissioning via push button learning mode
The Instat wireless connection strips link room thermostats to the thermal actuators using proven 868 MHz wireless technology and are designed to work seamlessly with the 868-r and 868-r1 wireless thermostats. This facilitates independent temperature control of each zone.
Features: 4 or 6 channel receiver device for Instat 868-r and Instat 868-r1 room thermostats Pump logic and protection (one output used) LED indicator for each channel
Instat 868-r Wireless Programmable Room Thermostat

Instat 868-a4

Easy to programme using only 4 buttons Large LCD digital display Self-learning heating curve Independent programming of upto 6 zones 3 temperature levels Party and holiday function

Instat 868-a6

The Instat 868-r1 wireless room thermostat can be used to control temperature in individual rooms and zones.
Features: With setback function (-4K or -2K) Selector switch for permanent comfort, permanent setback, automatic function or off LED indicating learning mode and low battery strength Tamperproof with temperature limiting and temperature locking facility
Instat 868-r1 Wireless Room Thermostat
Instat 868-a8U 8 channel programmable receiver with clock For independent timed control of up to 8 zones using Instat 868-r room thermostats Pump logic and protection (one output used) Backlit display Holiday function Party function 3 temperature levels Up to 6 time/temp pairs per day

Instat 868-a8U

The Instat 868 wireless system provides a cost effective solution to the problems encountered during the installation of standard wired comfort controls. Consider the benefits of a wireless system: No carpets and floor-boards to lift No damage to wall coverings No unsightly surface wiring Positioning no longer restricted to areas accessible by cable runs No brick or plaster work to chase out No damage to fabrics and furnishings in the process
Comfort Controls Product Part No. Instat 868-r Instat 868-r933
For further details request our specialist Underoor Heating brochure, from our customer services department. Contact details on back cover.
Comfort Controls Product Part No. Instat 868-a033 Instat 868-a033 Instat 868-a8U 140 033

Hydronic Controls

The Drayton MSV Manifold and KRS-B Pump and Flow Pack provides the installer with a complete solution for underfloor heating. The components are also available individually. Please see the Drayton Underfloor Heating brochure for detailed information and part numbers. MSV Manifolds MSV Manifold Components FL50 Flow Controls Flow Control Packs KRS-B Pump and Flow Control Pack

Electric Underoor Heating
The latest generation of electronic temperature controllers for oor heating
The complete manifold with pump and ow controls
Floor Temperature Controller
Room Temperature Controller with floor temperature limiter

Variations

Features: Compact design Corrosion resistant due to high quality MS63 brass The manifold can be sized according to the complexity of the system Supplied with airvents and fill cocks, shut-off ball valves, valves in each return port, and restrictors in each flow port

DFM ow indicator

Model Part No. Temperature Setting Range Power Supply Remote sensor
Instat+ 3F 22195 Floor temperature 10 to 40C Mains; 230V AC, 50Hz Included
Instat+ 3L 22196 Room temp. 7 to 32C Included Floor temp. 10 to 40C

Mains; 230V AC, 50Hz

General Technical Data

Hydronic controls

Manifolds Flow Controllers Flow controllers available as individual components or as packs with added mixing valve, highlimit thermostat and bypass valve Pump packs A complete pack for flow temperature control containing circulation pump, flow control, highlimit thermostat, mixing valve and all connecting parts Description Brass manifolds available in multiple preassembled configurations or as modular components.
Relay output Switching current Mode of regulation Connection Timing resolution Temperature resolution Rated impulse voltage Ball pressure test Pollution situation Protection level Wiring:
1 change-over (voltage free) Max. 16 (4) A proportional controller (PWM) or ON/OFF PWM cyclus time 10 or 25 min. via screw-type terminals 1 minute 0.1C 2.5KV 75C Degree 2 IP30 Designed for fixed wiring only, to comply with IEE wiring regulations
Benefits Select individual components or complete solutions. Easy to install and commission. High quality reliable products with full warranty and service support
Comfort Controls Product Digistat+3 (UFH) Digistat+3 (Limiter)

Part No. 22195 22196

Programmable Room Thermostat
Drayton presents a simple-to-use programmable control with traditional analogue clock face.
Features: For Electric Underfloor Heating Two models available: Floor temperature controller and room temperature controller with floor limiter Day and night temperatures independently selectable 5 operational modes via setting dial for Day / Night / Automatic / Frost protection / Off With 24 hour clock With remote sensor for measuring the floor temperature (if sensor fails, emergency operation 30 % heating) Hinged cover Wiring connections
Electric Underoor Heating - Wireless

Receivers INSTAT 868-a1

Features: Receivers for Instat 868r(d) and Instat 868r1 transmitters (see page 40) LED to indicate malfunction / loss of signal Emergency operation in case of malfunction Reverse function for cooling instead of heating Rest button

TIMESWITCH TERMINAL COMPARISONS
Common Neutral Make Model Earth Spare 5/6 3

CURRENT MODELS

Drayton Drayton Lifestyle Drayton Switchmaster Switchmaster Tempus 6, 7 LP112, LP241, LP522, LP722, LP241Si, LP522Si, LP722Si SM2 400, 600 (No connection to terminal 4 on 600) 805. 900, 900i N N N N N L L L L L 1
Drayton Drayton Lifestyle Drayton Tempus 1 and 2 LP111, LP711, LP111Si, LP711Si SM1 N N N L L L 2
DISCONTINUED / COMPETITORS MODELS
Switchmaster ACL Drayton British Gas British Gas Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Grasslin Towerchron Grasslin Towerchron Honeywell Honeywell Horstmann Horstmann Horstmann Horstmann Horstmann Myson Landis & Staefa Landis & Staefa Landis & Staefa Potterton Myson 300, 980 TC (Towerchron) Tempus 1 and 2 (Old models) EMT2 UT1 TS15, 75 (Mk18) TS715 TS975 SET1, SET1E SET4 103, 103E, 103E5, 103E7 911, 971 QE1 T2001, T2001Q ST 6100A, ST 6100C ST 7000B Centaur SC1, SC7 Channelplus H17XL, H11XL Centaur Plus C11, C17 Emerald 423, Pearl Auto 517, Coronet, H11, H17 Microtimer (link L-5 and 5-8) RWB3 RWB30, RWB50, 100, 152, 170 RWB7 EP4000, 4001, 4002, 5002 M6 Centroller Mk1 & Mk2 Centroller 30 Centroller 300, 980 Select 107 SP20, SP35 Vennerette E E E E E N N N N N N N N N 4 N 1 N N N N E E E E E E 4 E N 2 N N N N N N N N 5 N N N N N L 1 L L L L L L L L 6 L L L L L L L L L L L L L L L 6 L 2 L L L L 3
ACL ACL Drayton British Gas British Gas Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Danfoss Randall Grasslin Towerchron Honeywell Honeywell Honeywell Horstmann
MP (Towerchron) FP (Towerchron) Tempus 3, 4, 6, 7 (Old models) EMP2 UP1 CP15, CP715, FP15, FP715 (Mk18) 3020P, (link 1-6) 102, 102E, 102E5, 102E7, (link 6-3) 701 (link L-5 and 5-6) 702 (link L-5 and 5-6) 922, 972 (link L-2 and 2-5) SET2, SET2E, SET3E, SET3M, FP975, SET5 (link L-2 and 2-5) DP 72, QE2 ST 699/799 (link L-5 and 5-8) ST 6200, ST 6300, ST 6400, ST 6450 ST 7100 (link L-3 and 3-6) 525, 527, 425 Diadem, H21, H27, H121, Tiara, (link L-2 and 2-5), Channelplus H21XL, H27XL, H27ZXL Centaur Plus C21, C27 RWB2, RWB2E, 20, 40, 102, 200, 252 & 270, RWB9 Microtimer (link L-5 and 5-8) All EP2000s, EP3000s, EP6000s, (link L-5 and N-N) Mini Minder Select 207 SP50, SP100 (link L-3) E E E E E E E E E
N N N N 5 N N N N N N N N N N N N N N N N

Pump N 3 E

Boiler 1 Perm. L 2 N 3 E 7 Switch L

Mid-Position Valve

Controls Room Thermostat 14 5

Cyl. Thermostat 8 6

2 N N N

1 L L L

Mains Input 230V 50HZ 3

Motorised Valves 6

Room Thermostat Calling for heat Calling for heat Satisfied Cylinder Thermostat Calling for heat Satisfied Calling for heat Valve Positions Mid-position M Heating only H Hot water only W
Mid Position Valve control systems
Wiring Centre - BASIC LINKS
The numbers printed at the tip of each arrow represent the Wiring Centre Terminals to which those leads or terminals should be connected.

Pump 13 N E E

Boiler 7 L 2 N 3 E 1 Perm. L 2 N 3 E 7 Switch L

Controls

Drayton HTS 3
Lifestyle LP722 LP522 LP241 LP112 Tempus 6, 7 Switchmaster Switchmaster 9001

N NOT USED N N N L L L

Room Thermostat 145

Cyl. Thermostat 8

8 NOT 2 2

4 N N L

Function

Motorised Valve 4

Mains Input 230V 50HZ

Motorised Valve 3 5

Yellow/Green

Function L N E

HW Off

Boiler Live & HW On

28mm 3 Port Mid Position Valve
22mm 3 Port Mid Position Valve
22mm 3 Port Mid Position Valve 28mm 3 Port Mid Position Valve
Commissioning instructions Domestic heating systems with TRVs
IMPORTANT: Read all instructions before commencing work. All work should be carried out by a competent person. This commissioning procedure should be carried out on any wet central heating system fitted with thermostatic radiator valves (TRVs). Failure to correctly balance a system can lead to complaints of inefficient operation and criticism of the operational abilities of thermostatic radiator valves, when in fact the valves are not the source of the problem. Common complaints raised by home owners include: ooms are slow to reach temperature R even though radiators are sized correctly S ome rooms with correctly sized radiators never reach temperature during cold periods oom temperatures fluctuate particularly R if the TRV is on a low setting. It must be remembered that no amount of commissioning and adjustment will compensate for a poorly designed or installed system. There is no substitute for good design. Drayton thermostatic radiator valves are designed, tested and certified to meet with the stringent European standard EN215 and are manufactured in factories assessed and certified to the quality standard ISO9001 (BS5750 Part 1). To commission your heating system you will need two contact thermometers and a blue isolating cap for each TRV fitted. If you require extra caps telephone our Sales Office. Step 1 System cleansing Before filling a heating system and switching it on, it is imperative that a thorough flushing procedure is carried out to BS7593. Residues frequently found in new heating systems include grit, metal chippings, unused flux, solder residues, hemp and mineral oil. In existing systems rust and magnetite can also be present. Whilst BS7593 and CIBSE Code W refer to flushing as part of their codes on water treatment and commissioning, the most practical advice is to use a proprietary cleanser and follow the manufacturers instructions. Ensure that TRV heads are either set to the maximum setting or removed altogether during flushing as full flow through the system is required. Step 2 Refilling Having flushed the system thoroughly it is recommended that a proprietary inhibitor is added when the system is refilled. The inhibitor manufacturers instructions should be adhered to. Step 3 System balancing For a radiator to give the heat output it is capable of it must have water at the right temperature and flow rate. The flow temperature is obviously determined by the boiler thermostat but the flow rate is determined by a combination of the pump size/setting and the resistance through each and every loop of the heating circuit (ie. each and every radiator). In order to get equal flow rates through each radiator the system must be correctly balanced. This is usually achieved through adjustment of the lockshield valves on each radiator to achieve optimum flow. A white wheelhead cap is now available to fit on the Drayton range of valve bodies, once the cap is fitted to the body it can be used as a standard wheelhead/ lockshield valve. If Drayton valves are use on both ends, see paragraph 4b overleaf. Standards and codes covering balancing do exist but these generally call for sophisticated temperature measuring equipment and the provision of pressure tappings throughout the heating system. This is obviously not practical in the normal domestic installation so it is recommended you use the two contact thermometers for measuring pipe temperatures and take the following steps: 1. he boiler should be commissioned T in accordance with the appliance manufacturers instructions. Then the whole system should be brought up to design flow temperature with the pump running, all TRVs, lockshield valves and manual wheelhead valves should be fully open and the primary to the hot water cylinder closed. Fig. 2 2. Open and adjust the bypass, if fitted, in accordance with the boiler manufacturers instructions. This normally involves closing all radiator valves and, with the boiler and pump running, adjusting the bypass to ensure minimum system noise at all flow temperatures, until the boiler thermostat switches off. The bypass should NEVER be left fully closed. If more than 50% of the radiators have TRVs fitted, we recommend using an auto by-pass valve (such as the Drayton) and following instructions supplied. Before balancing the radiators check that water is not pumping over from, nor air being drawn into the open vent with the system in this condition. 3. witch the boiler and pump off. Close S all lockshield valves and using the manual caps also close any TRVs fitted on the system, (manual wheelhead valves must be left open) see Fig. 1. U 4a. sing standard lockshields Starting with the radiator nearest to the pump, open the manual cap on the TRV body by four divisions (see Fig. 2). Open the lockshield valve by a 1/4 turn, fit the contact thermometers to the flow and return pipes adjacent to the valves, switch on the boiler and pump and wait for the temperature readings to stabilise. The lockshield valve needs adjusting to achieve the design temperature drop between flow and return (usually 11C). Remember that to increase the temperature drop you need to slow the flow rate by closing the lockshield valve and vice versa. 4b. Using Drayton valves both end If a Drayton valve body with the white manual wheelhead cap (part no. 123) is being used in place of a lockshield (see Fig. 3), balance the radiator in one of the following ways:

ii. he valve insert can now be rotated T using the end of the adjusting key with the two unequal width pegs. IMPORTANT: Adjust in a clockwise direction only. Note: The numbers on the key correspond with the numbers on the top rim of the valve insert. iii. ine up required setting number with L the semi-circular notch on the top of the valve body and then re-tighten the locking ring. DO NOT OVER TIGHTEN. Never set at in-between or half numbers. Spare pre-setting keys are available in packs of two, part number 162.

Fig. 1

Unscrew manual cap four divisions from the shut position. This is the 2 position. One division
Note: Never set at in between or half numbers. Once the isolating/balancing valve has been set, fit the white wheelhead cap and leave it in the fully open position. 5. epeat this procedure for all radiators R working away from the pump. 6. radually open the primary flow to G the hot water cylinder again using the contact thermometers to obtain 11C drop between flow and return.

Fig. 4

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