Lochinvar CLN 120080, Инструкция по эксплуатации

Страница: 7 / 52

7
BLOWER/BURNER ASSEMBLY
The fan-assisted combustion system includes a spark-to-pilot
igniter, 100% premix stainless steel burners, and prejets for input
rate and precision air/gas ratio control.
2-BURNER / BLOWER ASSEMBLY
(for Input of 199KBtu/H or Less)
3-BURNER / BLOWER ASSEMBLY
(for Input of 250KBtu/H or Higher)
FIGURE 5.
The intake air screen is attached to the inlet of the combustion
blower. Inspect the intake air screen every six months. The intake
air screen should be cleaned of any buildup of debris or foreign
material.
Note: The Eliminator may have 1, 3 or 7 cross tubes.
FIGURE 2.
HIGH LIMIT SWITCH
The digital thermostat (Figure 3) contains the high limit (energy
cutout) switch. The high limit switch interrupts burner gas flow should
the water temperature reach 203°F (95°C).
In the event of high limit switch operation, the water heater cannot be
restarted unless the water temperature is reduced to approximately
120°F (49°C). The high limit reset button on the front of the control
then needs to be depressed.
Continued manual resetting of high limit control, preceded by higher
than usual water temperature is evidence of high limit switch operation.
Contact your dealer or service agent if continued high limit switch
operation occurs.
RESET
BUTTON
LED
LIGHTS
FUSE
140
130
DIGITAL THERMOSTAT
FIGURE 3.
ELECTRONIC IGNITION CONTROL
Each heater is equipped with an ignition control. The solid state
ignition control (Figure 4), ignites the burner by utilizing an
intermittent spark-to-pilot igniter. Spark and pilot gas ON until
lightoff or trial for ignition ends. If pilot fails to light, pilot gas and
spark OFF (100% shutoff). After 5 minutes delay, a new trial for
ignition is initiated. This sequence continues until lightoff or "Call
for Heat" is removed.
IGNITION CONTROL
FIGURE 4.