Thomas & Betts LDAP 1200 - Manual (Page 32)

Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 32
MAINTENANCE
AND SERVICE The material contained in the MAINTENANCE AND SERVICE Section of this
manual is designed to aid a qualified service person in maintaining and servicing this
equipment. This heater will operate with a minimum of maintenance. To ensure long
life and satisfactory performance, a heater that is operated under normal conditions
should be inspected and cleaned at the start of each heating season. If the heater is
operating in an area where an unusual amount of dust or soot or other impurities are
present in the air, more frequent maintenance is recommended.
When any service is completed, be careful to reassemble correctly to ensure that no
unsafe conditions are created. When re-lighting, always follow the lighting instructions
on the heater.
Maintenance Schedule - The following procedures should be carried out at least
annually. Refer to illustrations and follow the instructions in Paragraphs 29-42.
• Clean all dirt, lint, and grease from all combustion air openings and the venter
assemblies.
• Clean all dirt, lint, and grease from all fan blades, fan guards, and motors.
• Check all heat exchangers both internally and externally.
• Check all burners for scale, dust, or lint accumulation. Clean if needed.
• Check gas valve(s) to ensure that gas flow is being shutoff completely.
• Check the vent system for soundness. Clean openings. Replace any parts that
do not appear sound.
28. Maintenance
Schedule
NOTE: If replacement
parts are required, use only
factory-authorized parts.
WARNING: If you turn off
the power supply, turn off
the gas. See Hazard Levels,
page 2.
OPTIONAL
ACCESSORIES
26. 4-Way
Discharge
Louvers,
Option CD32
All Model LDAP heaters have discharge louvers but are available with additional
louvers and/or nozzle discharge air options. Optional louver and discharge nozzles
are shipped separately for field installation. Model LDAP 800 and 1200 heat sections
have independent airflow and do not require the same discharge options. Each pack-
age includes illustrated installation instructions.
Option CD32 consists of additional louvers that are installed perpendicular to the
standard individually adjustable louvers. By installing the optional perpendicular lou-
vers, the two sets of louvers can be adjusted to direct airflow in any of the four
directions, enabling the installer to select and increase or decrease the coverage area.
27. Nozzles Option CD57 is a 30° discharge nozzle. Option CD58 is a 60° discharge nozzle.
Option CD59 is a 30° discharge nozzle with 4-way louvers. A nozzle may be installed
at each discharge air opening in any direction. NOTE: Do not install 4-way louvers
with a 60° nozzle.
Nozzles should be attached after the unit is suspended. Follow the installation instruc-
tions in the nozzle package.
FIGURE 21A - One heat
section with Option CD58,
60° Nozzle
14-1/8”
(360mm)
16-1/2”
(419mm)
24-3/8”
(618mm)
Option CD57,
30° Nozzle
Option CD58,
60° Nozzle
Option CD59, 30° Nozzle
with 4-Way Louvers
FIGURE 21B -
Nozzle
Dimensions
Standard individually adjust-
able louvers are installed in
the nozzle discharge.