Hydrolevel 3100 User Manual

Warning, Caution, Hydrostat installed with electro-well

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83 Water Street • New Haven, CT 06511 • Phone (203) 776-0473 • FAX (203) 773-1019 •

www.hydrolevel.com

MODEL 3100

Combination Low Water

Cut-Off & Universal

Temperature Limit Control

for Gas Boilers

PATENTS PENDING

WARNING

Electrical shock hazard. To prevent electrical shock, death or
equipment damage, disconnect power supply before

installing or servicing control. Only qualified personnel may install or service this control in
accordance with local codes and ordinances. Read instructions completely before proceeding.

CAUTION

To prevent serious

burns, boiler

should be thoroughly cooled before installing or
servicing control.

• Dual Function Design – HydroStat performs both high temperature limit and low

water cut-off functions when installed with a Hydrolevel Electro-Well™.

• Replaces Common Aquastat

*

Models – Can be installed on existing immersion

wells to replace both cold-start and triple-action Aquastats

®

. Industry standard

wiring designations make change-outs quick and easy.

• Digital Display – Easy to read LED continually displays boiler temperature. Also

displays temperature limit and differential settings during adjustment.

• Easy to Set – Dials for setting temperature limits and differentials eliminate

complicated programming.

• Advanced Micro-Controller Design – Utilizes dual thermistor technology for

better accuracy, response and reliability.

*Aquastat is a registered trademark of Honeywell International, Inc.

HydroStat installed

with Electro-Well™

When installed with the Hydrolevel Electro-Well,

HydroStat will provide

both temperature and low water

cut-off functionality. If the control was supplied by the

boiler manufacturer, it was installed with an Electro-

Well. The Electro-Well is available separately for field

installations. See Electro-Well models on page 8.

OR

IMPORTANT

When installed on a standard immersion well, HydroStat will not provide low water cut-off functionality.

HydroStat installed with

a standard immersion well

For field replacement of common Aquastat

®

models,

HydroStat can be installed with the immersion well

already on the boiler. In this configuration, HydroStat

will provide the temperature functionality of the control

being replaced, but will not provide low water cut-off

functionality. The “LWCO Active” LED will not illuminate.

1/2" CLEARANCE

1/2" CLEARANCE

1/

2"

CL

EA

RA

NC

E

IIM

MP

PO

OR

RT

TA

AN

NT

T::

For proper opera-
tion of the low
water cut-off func-
tion, there must
be a minimum of
½" clearance
between the cop-
per well tube and
any surface within
the boiler.

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