Distributors of Heating, Hot Water and Ventilating Products - Established 1985

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Building regulations now apply every time you change a boiler or hot water vessel!

We recommend that you check all your heating controls to maximise the overall efficiency of your complete system.

Effective control does bring further savings.

See the heating controls section for more information

 



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Time to Replace Your Old Programmer

 

The Thermsaver Smart SM2247 twin channel central heating and hot water programmers is designed as replacements for practically ALL existing programmers.

The Smart SM2247 has up 3 on and off per day, (heating and hot water), with individual days 7 day or 5 day / 2 day or 24hr programs.

The  can be used with fully pumped and gravity systems.        Smart SM2247

Universal back-plate - simple installation on to other manufacturers wall bases

Most programmers have very similar dimensions. A large proportion of those on the market today will fit directly onto the original Landis & Gyr RWB2 (Glow-Worm Mastermind & Potterton Miniminder) wall base. This has become adopted and is often referred to as the industry standard.

The Smart SM2247 and will fit directly onto the wall bases of all the programmers highlighted in the chart below, the chart is split into two sections one section where the programmer can be directly attached to the original backplate and the other were the backplate will have to be replaced - however to maintain good electrical contacts it is recommended that all wall bases be replaced when renewing programmers.

Wiring Connection Chart - Direct Replacement
Manufacturer Product Reference Earth Neutral Live Compatible Terminal Numbers Programmer Links
Direct Replacement - [Does not require backplate removal]
Smart SM2247 E N L 4 3 2 1  
Landis & Gyr RWB Range E N L 4 3 2 1  
Landis & Staefa RWB 2 E N L 4 3 2 1  
Potterton MINIMINDER E N L 4 3 2 1  
  MINIMINDER "E" E N L 4 3 2 1  
Horstmann C21 Centaurplus E N L 4 3 2 1  
Glow-Worm MASTERMIND E N L 4 3 2 1  
Danfoss Randall FP715 E N L 4 3 2 1  
Honeywell ST 6200/6300/6400 E N L 4 3 2 1  
ACL Drayton LP112/241/5/722 E N L 4 3 2 1  
Wiring Connection Chart - Indirect Replacement
Manufacturer Product Reference Earth Neutral Live Compatible Terminal Numbers Programmer Links
Indirect Replacement - [Requires backplate replacement]
Towerchron QE2/DP72 E N L 4 3 2 1  
  T2002 E N L CH HW      
  T2000 & T2003 E N L CH on HW on CH off HW off L-C-C-
ACL Drayton TEMPUS 3/4/7 E N L 4 3 2 1  
Honeywell ST 6200A E N L 4 3 2 1  
  ST 7000 E N L 4 3 2 1  
  ST 699 E N L 3 6   7 L-5-8
  ST 7100 E N L 5 8   7 L-3-6
Horstmann 425/525/527/582 E N L 4 1   3 L-2-5
  EP 2001/3000/6000 E N L 4 3   1 L-5,N-N
Randall 102 & "E" 5 6 2 1     6-Mar
  3060/3020P E 7 6 2 4      
  4033 E 7 6 2 4   5 6-Jan
Sunvic SP50 & 100 E N L 5 2   1 L-6
Switchmaster 400 & 600 N L 1 3      
  805/900/9000/1   N L 1 3   4  
Myson MICROTIMER N L 3 6   7 L-5-8

Thermsaver make every effort to ensure that the information given on this page is accurate, however this information may change as a result of continuing product research and development.

For all pre sales and Technical advice call Thermsaver on 01698 300100