Heat Controller HBH/V Compact Installation, Operation & Maintenance Manual page 18

IOM Instructions HBH/V CompaCt Heat Controller, Inc.
Ground-Water Heat Pump Applications
Water Coil Low Temperature Limit Setting
For all open loop systems the 30°F [-1.1°C] FP1 setting
(factory setting-water) should be used to avoid freeze
damage to the unit. See "Low Water Temperature Cutout
Selection" in this manual for details on the low limit setting.
Figure 14: Typical Open Loop/Well Application
Flow
Water
Regulator
Pressure
Control
T ank
Valve
Water Out
Water In
Shut-Off
Valve
Optional
Filter
Boiler
Drains
P/T Plugs