BurtdeErnie
New Member
- Joined
- Dec 28, 2012
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G`day guys and girls!
I have been tinkering away and designed gas fired HERMS using a commercial instantaneous gas water heater and I thought I`d share it with you all.
The HERMS system has a total volume of 1.9 litres incorperating 4 metres of coil. Basically the wort will circulates through the center of the Rinnai flow and return pipework loop.
One of the good things about this system is after the boil I use the same HERMS coil as the chiller just by turning the heater off and opening up a discharge valve.
I have also converted a new mash tun that draws off the base of the mash which will increase mash efficiency. One of the things I was most stoked about was the $5.00 stainless false bottom I got from the local supermarket.
The only thing I am not sure of yet is the best position for the probe. I am concerned that the flow and return pump may not like the probe being on the return line into the keg as per a regular HERMs setups. Based on this I have installed 3 thermowells into the system two of which are home made. 1 on the wort return, another on the wort flow line and the last one straight into the mash tun. Time and testing will tell.
Below are 2 you tube links demonstrating the system.
https://www.youtube....h?v=Ja6Eauw5Q1w
https://www.youtube....h?v=9OXkNtvHFx8
Happy to hear all feedback good and bad!
I have been tinkering away and designed gas fired HERMS using a commercial instantaneous gas water heater and I thought I`d share it with you all.
The HERMS system has a total volume of 1.9 litres incorperating 4 metres of coil. Basically the wort will circulates through the center of the Rinnai flow and return pipework loop.
One of the good things about this system is after the boil I use the same HERMS coil as the chiller just by turning the heater off and opening up a discharge valve.
I have also converted a new mash tun that draws off the base of the mash which will increase mash efficiency. One of the things I was most stoked about was the $5.00 stainless false bottom I got from the local supermarket.
The only thing I am not sure of yet is the best position for the probe. I am concerned that the flow and return pump may not like the probe being on the return line into the keg as per a regular HERMs setups. Based on this I have installed 3 thermowells into the system two of which are home made. 1 on the wort return, another on the wort flow line and the last one straight into the mash tun. Time and testing will tell.
Below are 2 you tube links demonstrating the system.
https://www.youtube....h?v=Ja6Eauw5Q1w
https://www.youtube....h?v=9OXkNtvHFx8
Happy to hear all feedback good and bad!
