Hydrolevel 3200 User Manual

MODEL 3200

INSTALLATION INSTRUCTIONS
and OPERATING MANUAL

Temp Limit / LWCO Control
with Thermal Targeting

™

for Water Boilers

120 VAC Input / 24 VAC Burner Circuit

PATENT PENDING

• Saves Fuel – Features Thermal Targeting™ technology and

• Universal Design – Replaces common cold-start and triple-action

• Easy to Install – Industry standard wiring, dial-type settings,

• Operating Indicators – LEDs, Dynamic Display and Test Button provide

• Prioritizes Hot Water – Gives priority to low limit setting or to calls from

• Reduces Condensation – Holds circulator off until boiler reaches 120°F

•

Three Function
Design

Temperature Limit Control

Designed for cold start and tankless
coil boilers.

Low Water Cut-Off

Provides protection against potentially
dangerous low water conditions
when installed with the Hydrolevel
Electro-Well™ (see page 2 for details).

hermal Pre-Purge capability

T

quastats*

A

o external sensors

n

continual and on-demand status checks

indirect water heater

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

Boiler Reset Control

Utilizes
technology to conserve fuel by
monitoring heating demand and
establishing target boiler temperatures
below the high limit setting (see page 4
for details).

WARNING

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.

Thermal Targeting

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

83 Water Street • New Haven, CT 06511 • Phone [phone] • FAX [phone] • www.hydrolevel.com

™

CAUTION

should be thoroughly cooled before installing or
servicing control.

To prevent serious
burns, boiler

1

IMMERSION WELLS

Fuel Smart HydroStat can be installed on an existing immersion well already in the boiler or on a Hydrolevel Electro-Well™
(sold separately). The low water cut-off function is automatically activated when installed on an Electro-Well™.

IMPORTANT: The control will not provide low water cut-off protection when installed on a standard immersion well.
NOTE: Do not use heat-conducting grease.

Fuel Smart HydroStat installed

with Hydrolevel Electro-Well™

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 8.

NOTE: When installed on a standard immersion well, the “LWCO Active”
LED will not illuminate.

Fuel Smart HydroStat installed

with standard immersion well

MOUNTING THE CONTROL

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

temperature limit control tapping.

NNOOTTEE::

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

STEP 1

are available on the back of the control
(Fig. 1). Select which of the two positions
(2 knockouts) is best for the location of
the control. Remove the knockout.

Two mounting positions

STEP 2 Place control on the well.

While holding box against well nut,
tighten well clamp screw. (Fig. 2)

STEP 3 Insert sensor ALL THE

WAY into well through the knockout (A
or B) you have chosen. (Fig. 3)

BACK OF

FUEL SMART HYDROSTAT BOX

FIG. 1 FIG. 3FIG. 2

NOTE: In the case of space restrictions, the Fuel Smart HydroStat control may be mounted in a horizontal orientation without any

loss of function. Hydrolevel recommends vertical mounting, when possible, for proper orientation of LED display.

REMOTE MOUNTING KITS are available separately for mounting the Fuel Smart HydroStat control box in a remote location.

Each kit includes mounting hardware and a remote sensor. See page 8 for kit options.

2

WIRING

WARNING

STEP 1

terminal L1. Connect 120 VAC Neutral
to terminal L2. Disconnect means and
overload protection as required (pro­vided by others).

Connect 120 VAC Hot to

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

STEP 2 Connect the burner

circuit to B1-B2. (B2 is neutral.)

STEP 3 Connect the circulator

to C1-C2. (C2 is neutral.)

ZONE VALVE WIRING

MPORTANT: Use a separate transformer to

I

power zone valves. Connecting zone valves to
Z-TV may overload the HydroStat and cause a
lock-out condition (see
for more information). The total load, including the
burner circuit, vent damper, and Z-TV connections
must not exceed 1.2 amps (30 VA). Connect zone
valve end-switch to T-TV as shown below.

Troubleshooting

on page 6

STEP 4 Connect the thermostat

to T-TV.

STEP 5

with a plug-in style vent damper, unplug
the factory installed jumper from the
receptacle on the circuit board and
replace it with the vent damper plug.
NOTE: Once a vent damper plug is
connected to the HydroStat, the control
is permanently altered and will no
longer function when the vent damper
plug is disconnected

If the boiler is equipped

.

STEP 6 For Systems with Indirect Water Heaters

When installing with an indirect water heater, the signal from the indirect must be
separated from the heating zone signals and wired to I1 and I2 as shown above.
Calls to I1 and I2 will bypass the Thermal Targeting feature and allow the boiler to
fire to the high limit setting to heat the indirect tank.
NOTE: If you choose not to separate the indirect signal from the heating zones,
the Economy Feature should the turned OFF to insure that the boiler supplies ade­quate temperature to heat the indirect tank (see page 4).

3