Hello!

I have been a silent member for about the past 4 years. I have used this forum extensively and have typically found direction, insight, opinions and answers to just about everything I have queried. Thank you all for that!

I have designed, engineered, built and installed a new nano 2.5 BBL system that I am now preparing for our first batch.

We have a separate mash tun and lauter tun that was initially designed for multiple back-to-back batches, but we will be brewing single batches for some time using the mash tun as an MLT. We do have a VFD driven mash mixer on a center shaft and impeller and an interchangeable lauter rake. I have gathered enough information here to disregard the use of the rake at this time, but I would like to use the mixer when applicable.

I am asking that you review our step-by-step process described below that I have developed from various posts specifically regarding mashing / lautering procedures for a single infusing mash using a combined mash / lauter tun on a small system and comment accordingly.

I know that there is a broad range of knowledge and experience here, and I certainly would appreciate your time and consideration.

Thanks!

Mash / Lauter Process

Mash-in
- Calculated strike water volume heated from HEX
- Commercial tankless hot water heater
- Elevated grist case gravity feeds grain to grist hydrator
- Slide-gate controls flow
- Treated brewing water dosing during mash-in
- Pre-mixed & heated small volume added to strike water flow

Saccharification rest
- Specified period of time at a specified temperature
- Mash heated by immersion coil in mash tun
- Temperature controlled heated water pumped through coil

Mash-out
- Mash temperature is increased
- Mash heated by immersion coil in mash tun
- Specified period of time at a specified temperature

Recirculation
- Wort removed from bottom and returned to the top to facilitate clarification
- Mash tun false bottom in place
- Gravity fed to grant and pumped from grant back into mash tun
- Short brewery hose lengths to reduce heat loss
- Recirculation arm splash prohibitor sits just under grain bed
- Mash heated by immersion coil in mash tun

Sparge
- Calculated sparge water volume heated from HEX
- Treated brewing water dosing during sparge
- Pre-mixed & heated small volume added to sparge water flow
- No additional heating of wort during sparge

Transfer to boil kettle
- Mash tun false bottom in place
- Gravity fed to grant and pumped from grant to bottom of boil kettle