995489
9780750639941
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Ward provides information on over 340 programmers from 35 manufacturers, over 40 cylinder and 70 room thermostats, and over 200 gas boilers from 40 manufacturers. Wiring diagrams and part alternatives are also provided.Ward, Raymond is the author of 'Installing and Servicing Domestic Central Heating Wiring Systems and Controls' with ISBN 9780750639941 and ISBN 0750639946.
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