HydroStat User Guide

IMMERSION WELLS

REPLACING THE CONTROL

IMPORTANT Make sure that the immersion well or Electro-Well™ is installed in the boiler manufacturer’s designated

temperature limit control tapping.

NOTE:

If installing an Electro-Well, pipe sealing compound should be used. Teflon tape is not recommended.

NOTE: In the case of space restrictions, the HydroStat-IC control may be mounted in a vertical orientation without any loss of func-

tion. Hydrolevel recommends horizontal mounting, when possible, for proper orientation of LED display.

IMPORTANT: For proper operation of the low water cut-off function, there

must be a minimum of ½" clearance between the copper well tube and any

surface within the boiler.

See Electro-Well models on page 15.

NOTE: When installed on a standard immersion well, the “LWCO Active” LED

will not illuminate.

HydroStat-IC can be installed with an existing immersion well already in the boiler or with a Hydrolevel Electro-Well™

(sold separately). The low water cut-off function is automatically activated when installed with an Electro-Well™.

IMPORTANT: The control will not provide low water cut-off protection when installed with a standard immersion well.

NOTE: Do not use heat-conducting grease.

HydroStat-IC installed

with Hydrolevel Electro-Well™

HydroStat-IC installed

with standard immersion well

IMPORTANT – Sensor must be inserted all the way into the well for proper operation.

CORRECT INCORRECT

1 Turn off power to the system.

2 Unplug the line voltage connection, circulator connector, transformer connector, damper connector,

low voltage connector, and ignition wire from the existing control. See Figure 1 next page.

Note: When replacing a Honeywell control with Envirocom, disconnect the wires from the Envirocom

terminals and terminate safely. That feature will not be used with the new control.

3 Remove the old control from the boiler jacket and install the new control in the same mounting slots.

Note: To activate the low water cut-off feature of the new control, remove the existing immersion

well and replace it with a Hydrolevel Electro-Well.

4 Reconnect all plug connectors.

5 Insert the sensor fully into the well.

All work must be performed by a qualified and licensed professional in accordance with all

applicable codes and ordinances.