White Rodgers 1609 - Manual

Printed in U.S.A.

PART NO. 37-1104F

Replaces 37-1104E

9909

WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS RD., ST. LOUIS, MO. 63123-5398
(314) 577-1300, FAX (314) 577-1517

9999 HWY. 48, MARKHAM, ONT. L3P 3J3
(905) 475-4653, FAX (905) 475-4625

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.

DESCRIPTION

241-2 & 1609 Series

Refrigeration Temperature Controls

INSTALLATION INSTRUCTIONS

This hydraulic action temperature control is applicable for all
types of commercial or industrial refrigeration applications. This
control will close contacts on rise in temperature and open them
on a fall in temperature.

The 241-2 control has a two-circuit contact structure which will
simultaneously close two circuits on a rise of temperature and
open them on a fall of temperature.

INSTALLATION

The switch mechanism of this control may be mounted in any
location, provided that the temperature and humidity of the air in
which it is located do not cause a condensation on the switch
parts.

The sensitive element, or “bulb”, should be located in the
average temperature of the controlled area.

Capillary tubing should be led over a path that protects it from
damage from blows, cuts, etc., and should be installed without
kinking or twisting. The tubing should be attached to some
surface at frequent intervals along its length, and should not

hang loosely. Excess tubing should be coiled and secured at a
convenient protected location close to the switch mechanism.

The bulb should be handled with reasonable care, as a dent or
sharp bend may change the calibration and cause the control to
cycle at a temperature different from the dial setting.

PRECAUTIONS

FIRE/SHOCK HAZARD

Disconnect power to system at main fuse
or circuit breaker box before installation.

Do not use on circuits exceeding speci-
fied voltages.

WHITE-RODGERS

Operator: Save these instructions for future use!

This two-circuit control is intended for use on zoning systems
where all controls operate a common compressor but operate a
separate solenoid refrigerant valve in each zone.

WARNING

!

CAUTION

THIS CONTROL MUST BE INSTALLED BY A QUALIFIED
INSTALLER.

All wiring must conform to local and national electrical codes and
ordinances.

This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could cause
the control to malfunction.

This control has been accurately calibrated at the factory. Any
attempt to re-calibrate this control will void the White-Rodgers
warranty.

If in doubt about whether your wiring is millivolt, low or line
voltage, have it inspected by a qualified heating and air condi-
tioning contractor or a licensed electrician.

Label all wires prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation.

Following installation or replacement, follow appliance manu-
facturers’ recommended installation/service instructions to in-
sure proper operation.

FREEZE HAZARD

Install low temperature limit device.

System malfunction may cause freeze
damage.