U.S. Boiler Company K2WT-080B, Инструкция по установке, эксплуатации и обслуживанию

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11) Start the boiler using the lighting instructions on page 102. With the boiler powered up, and with no call for heat, the
display should look like Figure 11.2a. Once a call for heat is present, it will look like Figure 11.2b.
12) The boiler should attempt to fire approximately 30 seconds after a call for heat appears. With the upper front cover
removed from the boiler, this try for ignition will appear as an audible spark (lasting approximately 4 seconds) and an
audible click from the gas valve. Upon initial start-up, the gas train will be filled with air. Even if the gas line has been
completely purged of air, it may take several tries for ignition before a flame is established. If the boiler does not light
after six tries for ignition, it will enter a “soft lockout” and will wait for one hour before attempting another ignition
sequence. This soft lockout can be reset by interrupting power to the boiler for a few seconds. Once a flame has been
established for the first time, subsequent calls for burner operation should result in a flame on the first try.
13) If there is a problem that appears before the first try for ignition, or if the boiler fails to light after six tries for ignition, the
blinking “HELP” button is highlighted on the Home screen (Figure 11.2c). Touching this “HELP” button will take the
user to the Diagnostics menu where the cause of the problem can usually be found by pressing the flashing button on each
successive screen.
Note: If boiler does not start when first turned on, and problem cannot be remedied following “Help” prompts on the
boiler display, it may be necessary to reset and adjust the throttle screw according to the following instructions:
1.
Fully close throttle
by turning throttle screw clockwise until it fully stops.
2.
Open throttle screw
counter-clockwise the number of full (360 degrees) and partial turns listed in Table 11.5B.
14) Inspect the flame visible through the window. On high fire the flame should be stable and mostly blue (Figure 11.3). No
yellow tipping should be present; however, intermittent flecks of yellow and orange in the flame are normal.
15) Check the inlet gas pressure. Verify that the inlet gas pressure is between the upper and lower limits shown on the rating
plate with all gas appliances on and off.
Figure 11.1: Location of Manual Air Vent
XI. Start-Up and Checkout
(continued)
FLAME ROD
ATTACH 1/4" ID CLEAR
TUBING TO HOSE BARB
AND ROUTE TO SAFE PLACE
AWAY FROM CONTROLS
BEFORE OPENING VENT.
MANUAL AIR VENT