resideo L4029E 200°F Fixed Range and 3 Inch Insertion Instruction Manual
- June 9, 2024
- resideo
Table of Contents
resideo L4029E 200°F Fixed Range and 3 Inch Insertion
APPLICATION
The L4029E,F provides high limit cutout with manual reset in warm air or air conditioning systems. In warm air systems, the L4029E,F may be used as secondary high limits for positive burner shutdown on fan failure, or on reverse airflow in counterflow furnaces. The limits may also be used to detect heat from a fire in air conditioning or ventilation ducts and shut off air circulation to contain the fire. The L4029E comes with case and cover, the L4029F without case and cover. Both mount directly to the ductwork.
INSTALLATION
CAUTION
- Installer must be a trained, experienced service technician.
- Disconnect power before connecting wiring to prevent electrical shock and equipment damage.
Location
L4029E or F should be mounted where element can respond quickly to air
temperature changes in the system. In a ventilating or air conditioning
installation, the safety control is normally installed with element just
upstream of fan. Where there is no intake duct, the L4029E or F may be
mounted on a suitable bracket sothe air entering the fan is drawn across the
element. In a downflow furnace installation, locate the L4029E or F between
filter(s) and blower where the circulation of air is not restricted by
baffles. Do not permit element guard to touch filter or other internal parts.
The maximum ambient temperature of the selected location should not exceed 190
F at the switch, 350 F at bimetal.
Mounting
At selected location, cut a hole in sheet metal to clear element guard, and drill holes for mounting screws. Remove cover (L4029E), insert element into hole, and fasten control securely with screws.
WIRING
CAUTION
Disconnect power before making wiring connections to prevent electrical shock
and equipment damage. All wiring must agree with local electrical codes and
ordinances. See typical connections below. Loads connected to the control
terminals must not exceed the following electrical ratings (in amperes):
| 30 VAC| 120 VAC| 240 VAC
---|---|---|---
Full Load| 2| 10| 5
Locked Rotor| —| 60| 30
0.25 amp full load at 0.25 to 12VDC. 1600 VA maximum connected load
CHECKOUT
There are no field adjustments to make on the L4029E or F.
To Reset
When the temperature has dropped approximately 25 degrees (F) below cutout
point, push and release the button protruding through the cover.
- If the limit control should require servicing or replacement, be sure to order by model number.
- Never use a lighted match to heat the bimetal element for checking the operation.
- Limit controls do not require lubrication.
Before leaving the job, check the installation as follows:
- Disconnect the fan from its power supply.
- Turn on the burner by operating the thermostat.
- The L4029 will shut off the burner when the plenum temperature reaches the limit setting of the control.
- If the L4029 fails to shut off the burner, check the installation and wiring carefully. Retest. If control still fails to shut off burner, replace control.
Resideo Technologies, Inc.
1985 Douglas Drive North, Golden Valley, MN 55422
1-800-468-1502
60-0069—03 M.S. Rev. 06-20 | Printed in United States
© 2020 Resideo Technologies, Inc. All rights reserved. This product is manufactured by Resideo Technologies, Inc. and its affiliates.
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