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Log Burner Working Along Side An Oil Boiler
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<blockquote data-quote="Sidecutter" data-source="post: 330341" data-attributes="member: 364"><p>Customer asked me to wire up heating system with</p><p></p><p>Oil boiler</p><p></p><p>3 Port Motorised valve</p><p></p><p>Stat on Water Tank</p><p></p><p>No stat on Central heating</p><p></p><p>Then to wire in control to automaticaly bring in pump when log burner is lit</p><p></p><p>So oil boiler wired up to three port valve in usual way all works fine</p><p></p><p>So how to get log burner to operate Pump</p><p></p><p>I am thinking if I put a pipestat on Flow pipe from log burner to control pump</p><p></p><p>If I wire the pipestat as follows I think it will do the Job</p><p></p><p>N/C terminal to the pump output from the boiler</p><p></p><p>N/O terminal to the permanant live</p><p></p><p>COM terminal to the Pump</p><p></p><p>So in operation if oil boiler is turned on pump is operated via N/C terminal</p><p></p><p>Pipework heats Up and Pipestat switches from N/C to Normaly open feeding pump with 230v</p><p></p><p>Boiler turns off and Mid position valve returns to middle position but pump carries on running until pipework has cooled down enough for the pipestat to return to its normally off position. (bit like a pump overrun)</p><p></p><p>If Log burner is lit heat in flow pipe operates pipestat and pump is switched on.</p><p></p><p>This is how I think it needs to be wired. Any comments from anybody who has done this type of system before of has knowledge of the correct way</p><p></p><p>Hope my explanaton makes sence and thankyou for any helpful coments.</p><p></p><p>Rick</p></blockquote><p></p>
[QUOTE="Sidecutter, post: 330341, member: 364"] Customer asked me to wire up heating system with Oil boiler 3 Port Motorised valve Stat on Water Tank No stat on Central heating Then to wire in control to automaticaly bring in pump when log burner is lit So oil boiler wired up to three port valve in usual way all works fine So how to get log burner to operate Pump I am thinking if I put a pipestat on Flow pipe from log burner to control pump If I wire the pipestat as follows I think it will do the Job N/C terminal to the pump output from the boiler N/O terminal to the permanant live COM terminal to the Pump So in operation if oil boiler is turned on pump is operated via N/C terminal Pipework heats Up and Pipestat switches from N/C to Normaly open feeding pump with 230v Boiler turns off and Mid position valve returns to middle position but pump carries on running until pipework has cooled down enough for the pipestat to return to its normally off position. (bit like a pump overrun) If Log burner is lit heat in flow pipe operates pipestat and pump is switched on. This is how I think it needs to be wired. Any comments from anybody who has done this type of system before of has knowledge of the correct way Hope my explanaton makes sence and thankyou for any helpful coments. Rick [/QUOTE]
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