Baxi Power HT 1.850 Installation, Operation And Maintenance Manual page 98

13.1 SINGLE GAS VALVE MODELS (POWER HT 1.850 AND 1.1000) FIGURE 12a
IT
Proceed as follows to adjust the single gas valve:
AT
• Insert the fume analysis probe into the fume sampling hole as instructed in section 17 (figure 15).
• Press and hold the
GB
appear on the display in the position shown in figures 13a and 13b. You are now in 'calibration mode'.
• Press the
Turn the adjuster screw V on the gas valve until you achieve the CO
•
- Turn the screw anti-clockwise to increase the CO
- Turn the screw clockwise to decrease the CO
• Press the
Turn the adjuster screw K on the gas valve until you achieve the CO
•
- Turn the screw clockwise to increase the CO
- Turn the screw anti-clockwise to decrease the CO
13.2 DOUBLE GAS VALVE MODELS (POWER HT 1.1150, 1.1200 AND 1.1500) FIGURE 12b
Proceed as follows to adjust the double gas valve:
• Connect a pressure gauge to the P1OUT pressure measurement hole on valve 1.
• Press and hold the
appear on the display in the position shown in figures 13a and 13b. You are now in 'calibration mode'.
• Press the
• Turn the adjuster screw V1 on gas valve 1 until you achieve the maximum pressure value (Pout) shown in
table 2.1:
a. Turn the screw clockwise to increase pressure (CO
b. Turn the screw anti-clockwise to decrease pressure (CO
• Press the
• Turn the adjuster screw K1 on gas valve 1 until you achieve the minimum pressure value shown in table
2.1:
c. Turn the screw clockwise to increase pressure (CO
d. Turn the screw anti-clockwise to decrease pressure (CO
Warning: if the boiler fails to start, proceed as follows: tighten adjuster screw (V1) fully down and then
unscrew it, depending on the model, by 2 ~ 1/4 turns (POWER HT 1.1150 and 1.1200) or 2 ~ 1/2 turns
(POWER HT 1.1500).
• Repeat the above steps on gas valve 2.
• Check that the CO
K2 and V2 (figure 12b) to optimise the CO
sampling hole as instructed in section 17 (figure 15).
and keys on the control panel simultaneously for 7 seconds until the
key to set the maximum heat output, with the display showing 100% (figure 13a).
key to set the minimum heat output, with the display showing 0% (figure 13b).
and keys on the control panel simultaneously for 7 seconds until the
key to set the maximum heat output, with the display showing 100% (figure 13a).
key to set the minimum heat output, with the display showing 0% (figure 13b).
values for maximum and minimum heat output are as shown in table 2, then fine-tune
2
INSTRUCTIONS PERTAINING TO THE INSTALLER
level.
2
level.
2
level.
2
level.
2
decreasing).
2
increasing).
2
increasing).
2
decreasing).
2
value. To measure CO
2 2
98
levels shown in table 2:
2
levels shown in table 2:
2
, insert the flue analysis probe in the
symbols
symbols