1801UDSBD-4E,--EN, Pag. 21/35
This heater has a unique one-piece T-CORE
2®
burner assembly
designed to provide controlled flame stability without lifting or
flashback. The burner can be removed as a unit for inspection
or service : see below for removal instructions.
Instructions for burner removal
1. Outside the cabinet, shut the gas supply off at the manual
valve ahead of the union
2. Turn off the electric supply.
3. Disconnect the gas supply at the union outside of the cabinet.
4. Open the access door.
5.
Disconnect the manifold and move it out of the way.
At
the gas valve, mark and disconnect the connector. Carefully
remove the burner orifice and orifice adapter locking nut.
Slide the orifice adapter out through the bracket on the burner
pushing the manifold to the right. This will move the manifold
out of the way. Refer to figure 14 for component definitions.
Figure 12a
Figure 12b
Burner orifice
Locking nut
Orifice adapter
15
BURNER MAINTENANCE
Inspect the burner/control compartment annually to deter-
mine if cleaning is necessary. If there is an accumulation of
dirt, dust, and/or lint, clean the compartment and follow the
instructions below to remove and clean the burner.
Caution
:
use of eye protection is recommended.
6. Remove burner
a) Locate the burner body front support. Remove the
screws that attach it to the secondary air shield.
Refer to fig. 14 for component definitions.
b) Holding the venturi tube, slide the entire burner
slightly to the right to disengage the burner from the
supports on the left. Then rotate the open end of the
venturi tube outward away from the heater. Carefully
pull the burner assembly out of the cabinet.
Figure 13a
Figure 13b
