HERMS Coil Owners Manual - V1
©Blichmann Engineering, LLC 2018
For replacement parts visit blichmannengineering.com/genuine-replacemnet-parts
HLT-MT set
differential F°
Strike water vol.
gal
HL Vol. (gal) Time to reach strike
temp.
Time to reach within 5 deg
of strike temp.
55 Gal Kettle without Whirlpool
5 40 48 6 hrs 28 mins 2 hrs 40 mins
55 Gal Kettle with Whirlpool
3 40 48 4 hrs 20 mins 2 hrs 8 mins
30 Gal Kettle without Whirlpool
5 20 25 3 hrs 15 mins 1 hr 20 mins
30 Gal Kettle with Whirlpool
3 20 25 2 hrs 10 mins 1 hr 5 mins
20 Gal Kettle without Whirlpool
5 15 17 2 hrs 25 mins 1 hr
20 Gal Kettle with Whirlpool
3 15 17 1 hr 40 mins 50 mins
15 Gal Kettle without Whirlpool
5 10 13 1 hr 40 mins 40 mins
15 Gal Kettle with Whirlpool
3 10 13 1 hr 5 mins 30 mins
10 Gal Kettle without Whirlpool
5 7 8 1 hr 10 mins 30 mins
10 Gal Kettle with Whirlpool
3 7 8 45 mins 20 mins
7.5 Gal Kettle without Whirlpool
5 5 7 50 mins 20 mins
7.5 Gal Kettle with Whirlpool
3 5 7 30 mins 15 mins
HERMS Heating Times for 7.5-55 Gal MT & HLT
Installation
Install the HERMS Coil with an adjustable wrenche while holding the coil on the inside. DO NOT overtighten.
Operation
With the coil installed, heat the HLT and recirculate wort through the HERMS coil. This will allow you to maintain a constant tem-
perature.
We recommend using a whirlpool in the HLT to improve heat transfer to the HERMS Coil. This will increase efficiency of your strike
temperatures. Review the charts below for heating data.
Using a Whirlpool in Your HLT-
• Reduces time to strike by ~30%
• Reduces HLT-MT Temp differential by a few degrees
Test results for a mash target strike temperature of 150°F and hot liquor set temperature of 155°F or 153°F when using whirlpool.
3
Flow Rate (gal/min) Pressure Drop (psi)
2.25 6.8
2 5.4
1.5 3.8
1 1.7
0.5 0.9
Large HERMS
Flow Rate (gal/min) Pressure Drop (psi)
2.5 6.4
2 4.5
1.5 2.9
1 1.5
0.5 0.9
Small HERMS
Large & Small HERMS Coil Flow Rate and Pressure Drop
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