Page 22
D-GAS HEAT COMPONENTS
heat sizes.
The KGC units use aluminized steel inshot burners with
matching tubular aluminized steel heat exchangers and
two-stage redundant gas valves. Units use two six tube/
medium heat and two eleven tube/burners for high heat.
Burners in all units use a burner venturi to mix gas and
air for proper combustion. Combustion takes place at
each tube entrance. As hot combustion gases are drawn
exhaust gases are drawn out the top and fresh air/gas
mixture is drawn in at the bottom. Heat is transferred to
the air stream from all surfaces of the heat exchanger
tubes. The supply air blowers force air across all surfaces
of the tubes to extract the heat of combustion. The shape
of the tubes ensures maximum heat exchange.
The gas valves accomplish staging by allowing more or
less gas to the burners as called for by heating demand.
HEAT EXCHANGER
(one heat section shown)
BURNER
COMBUSTION
AIR INDUCER
VENT
CONNECTOR
GAS VALVE
HEAT
EXCHANGER
TUBE
HEAT EXCHANGER
(one heat section shown)
BURNER
COMBUSTION
AIR INDUCER
VENT
CONNECTOR
GAS VALVE
HEAT
EXCHANGER
TUBE
FIGURE 11
controls all functions of the assembly.
Burners
All units use inshot burners. Burners are factory set and
do not require adjustment. A peep hole with cover is
Always operate the unit with the access panel in place.
Burners can be removed individually for service. Burner
CHECKS section of this manual.
NOTE - Do not use thread sealing compound on the oric-
es. Using thread sealing compound may plug the orices.
sizing information.
BURNER BOX ASSEMBLY
GAS MANIFOLD
FLAME
SENSOR
GAS
VALVE
(GV1), GV3)
BURNERS
FLAME
ROLLOUT
LIMIT
(S47), (S69)
SPARK
ELECTRODE
FIGURE 12
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