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Author Topic: Short cycling oil boiler. Commercial size  (Read 7499 times)
TT
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« Reply #30 on: December 25, 2017, 01:03:45 PM »

Agree with the comments
A primary and secondary pump would solve the problem, reasonably easy to install with either a timer,PIR, or a Wifi switch.
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guydewdney
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« Reply #31 on: December 26, 2017, 07:59:09 PM »

I'd like to add a controller for the pumps. They have the ability to be speed controlled by 0-10v PWM or resistance. Or various canbus methods.

I'm after something that will monitor the temperature of flow Vs flow and adjust the flow accordingly.

Any suggestions?
« Last Edit: December 26, 2017, 08:07:17 PM by guydewdney » Logged

Pic of wheel on day 1
7.2kW Waterwheel and 9.8kW PV
rogeriko
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« Reply #32 on: December 26, 2017, 09:10:57 PM »

http://www.cometsystem.com/products/reg-P4211
http://www.cometsystem.com/products/reg-T0218
http://www.omniinstruments.co.uk/mst110-series-temperature-transmitters-with-4-20ma-or-0-10v-o-p.html

Something like this?
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TT
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« Reply #33 on: December 27, 2017, 07:55:11 PM »

http://uk.grundfos.com/service-support/encyclopedia-search/pressure-transducer.html

I use a lot of grundfos magma 3 pumps at work, I like them
LCD display on pump,  pumps auto adapt to flow, show litres per minute and power consumption and can be controlled by a BMS or independent
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