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THERMSAVER - Replacing Your Old Mechanical Programmer

The ThermSave TH-0472 and QE2 central heating programmers are designed as replacements for practically all existing programmers. The ThermSave TH-0472 has 42 individual selections/channel, (heating and hot water), with individual days or 5-day /2-day groups selectable. The QE2 can be set electronically for 24hr, 7 day, 5 day / 2 day operation. Both are switchable between fully pumped and gravity systems.

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 ThermSave TH-0472 and Towerchron QE2 will fit directly onto the wall bases of all the programmers highlighted in the chart below - however to maintain good electrical contacts it is recommended that all wall bases be replaced when renewing programmers.

  wiring connection chart
Manufacturer Product Reference Earth Neutral Live Compatible Terminal Numbers Programmer Links
Celect * TH-0472 * E N L 4 3 2 1  
Towerchron * QE2/QM2/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 * LP112/241/5/722 * E N L 4 3 2 1  
  TEMPUS 3/4/7 E N L 4 3 2 1  
Glow-Worm MASTERMIND E N L 4 3 2 1  
Honeywell * ST6200/6300/6400 * E N L 4 3 2 1  
  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
  * C21 Centaurplus * 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  
  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
Danfoss Randall * FP715 * E N L 4 3 2 1  
Sunvic SP50 & 100 E N L 5 2   1 L-6
  * SELECT 207 * E N L 4 3 2 1  
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
1 Croftbank Crescent - Uddingston - Glasgow G71 7JD - Scotland
TEL: 01698 327997   FAX: 01698 327776

This data can also be viewed online at http://www.thermsaver.co.uk/heating_controls/update_or_replace.html

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.