U.S. Boiler Company Alpine ALP080B, Инструкция по установке, эксплуатации и обслуживанию

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Figure 36: Burner Flame
I. Check Burner Flame
Inspect the flame visible through the window. On
high fire the flame should be stable and mostly
blue (Figure 36). No yellow tipping should be
present; however, intermittent flecks of yellow and
orange in the flame are normal.
J. Check Gas Inlet Pressure
Check the inlet pressure and adjust if necessary.
Verify that the inlet pressure is between the upper
and lower limits shown on the rating plate with all
gas appliances on and off.
K. For LP Gas, perform procedure
as described
in Paragraph R “Field Conversion From Natural
Gas to LP Gas” before starting Paragraph L
“Checking/Adjusting Gas Input Rate”.
For natural gas, proceed to Paragraph L
“Checking/Adjusting Gas Input Rate”.
L. Perform Combustion Test
1. Remove flue temperature sensor from
vent connector (see Figure 9) and insert
combustion analyzer probe through flue
temperature sensor silicon cap opening. If
required, also remove the flue temperature
sensor silicon cap and insert the analyzer
probe directly into flue sensor port. Reinstall
the sensor and the cap upon combustion
testing completion.
2. Verify O
2
(or CO
2
) and CO are within limits
specified in Table 22 (natural gas) or Table 23
(LP gas) at both high and low fire as described
in the following steps.
a. Lock boiler in high fire and allow boiler to
operate for approximately 5 minutes before
taking combustion readings. To lock boiler
in high fire, from the home screen, press
“Adjust”, “Adjust”, “Login”, “000”. Enter the
password “086” and press return arrow to
close the keypad. Press “Save”, “Adjust”,
“High” to lock boiler in high fire.
IX. System Start-up
(continued)
Status Control Action
Initiate Power-up
Standby Delay
This state is entered when a delay is
needed before allowing the burner control
to be available and for sensor errors.
Standby
Boiler is not firing. There is no call for
heat or there is a call for heat and the
temperature is greater than setpoint.
Safe Startup
Tests flame circuit then checks for flame
signal.
Drive Purge
Driving blower to purge rate setting and
waiting for the proper fan feedback.
Prepurge
Purges the combustion chamber for the 10
second purge time.
Drive Light-off
Driving blower to light-off rate setting and
waiting for the proper fan feedback.
Pre-ignition
Test
Tests the safety relay and verifies that
downstream contacts are off.
Pre-ignition Energizes the igniter and checks for flame.
Direct
Ignition
Opens main fuel valve and attempts
to ignite the main fuel directly from the
ignition source.
Running
Normal boiler operation. Modulation rate
depends on temperature and setpoint
selections and modulating control action.
Postpurge
Purges the combustion chamber for the
30 second purge time.
Lockout
Prevents system from running due to a
detected problem and records fault in
Lockout History.
Asphyxiation Hazard. The
outlet pressure for the gas valve has been
factory set and requires no field adjustment.
This setting is satisfactory for both natural gas
and propane. Attempting to adjust the outlet
pressure may result in damage to the gas valve
and cause property damage, personal injury or
loss of life.
WARNING
Asphyxiation Hazard. Each
Alpine Series boiler is tested at the factory
and adjustments to the air fuel mixture are
normally not necessary. Improper gas valve or
mixture adjustments could result in property
damage, personal injury or loss of life.
Any gas valve adjustments (throttle and/
or offset) specified herein and subsequent
combustion data (%O
2
, %CO
2
, CO ppm)
collection must be performed using a
calibrated combustion analyzer.
WARNING