---
title: HVAC Water Treatment
…864 unchanged lines
label: Glycol Concentration
type: range
−unit: % by volume
+unit: '% by volume'
options:
min: 20
…238 unchanged lines
label: Side-Stream Flow Rate as Percent of System Flow
type: range
−unit: %
+unit: '%'
options:
min: 1
…348 unchanged lines
## The chemical-feed controllers and the BAS integration described here interface with the building automation system per [[sync/building-automation-system]], with the controller's communication protocol, point list, alarm priority, and trend logging configuration agreed at the BAS submittal stage.