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XIII. System Start-up(continued)
4. Begin commissioning the appliance. Visually inspect
flame via sight glass window. On high fire the flame
should be stable and mostly blue. Yellow tips should
not be present; but, intermittent flecks of yellow
and orange in the flame are normal.
5. Test any other external limits or other controls in
accordance with the manufacturer's instructions
6. Verify O
(or CO
) and CO concentration are within
2
2
limits specified in Table 30. Note: the values in
this table are for sea level only. For high altitude
installation, above 2000 ft. consult factory.
C. Combustion Air/Fuel Adjustment
1.
For high fire adjustment
a. Lock the appliance in high fire and allow fan speed
and combustion analyzer reading to stabilize
before taking combustion readings. To lock in high
fire, select MAIN MENU >> OPERATION. Select
lock symbol, type password and select ENTER.
From the Operation screen, select Automatic /
Manual Firing Rate Control >>Manual Modulation.
Go back to Operation screen. Then select High
Low >> High.
b. Once high fire rate is reached, adjust the O
at high fire with all the jackets, including the front
cabinet door, closed.
c. For appliances specified to be less than 20 ppm
NOx adjust O
2
(Natural gas).
d. If high fire O
is too high (CO
2
O
(increase CO
2
counter-clockwise in 1/4 turn increments and
checking the O
Refer to Figure 26 or Figure 27 for location of
throttle screw. Verify CO air free is less than 200
ppm.
INLET GAS
PRESSURE TAP (P1)
WITH INTERNAL SCREW
GAS INLET
VALVE COIL (V1)
56
level to approximately 6.0%
is too low), decrease
2
) by turning the throttle screw
2
(or CO
) after each adjustment.
2
2
Figure 27: AMP 400 Gas Valve Adjustment
e. If high fire O
O
(decrease CO
2
clockwise in 1/4 turn increments and checking the
O
(or CO
2
26 or Figure 27 for location of throttle screw.
Verify CO air free is less than 200 ppm.
2. For low fire adjustment
.
a. Lock appliance in low fire and allow fan speed and
combustion analyzer reading to stabilize before
taking combustion readings. To lock in low fire,
select High Low >> Low.
b. If low fire O
(decrease CO
clockwise in less than 1/8 turn increments and
checking the O
Verify CO concentration is less than 200 ppm.
Throttle Adjustment
level
2
Offset Screw (adjustment
not normally required)
Figure 26: AMP 500-1000L Gas Valve Adjustment
is too low (CO
is too high), increase
2
2
) by turning the throttle screw
2
) after each adjustment. Refer to Figure
2
is too low (CO
is too high), increase O
2
2
) by turning the offset screw counter-
2
(or CO
) after each adjustment.
2
2
Lift cap to access
throttle screw
VALVE COIL (V2)
OUTLET GAS
PRESSURE TAP (P2)
WITH INTERNAL SCREW
THROTTLE SCREW
OFFSET SCREW
(ADJUSTMENT NOT
NORMALLY REQUIRED)
AMP 400-1000L I&O Manual
2
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