Step 2: Set High Fire Air; Step 3: Set Low Fire Air; Step 4: Verify The Air Settings - Eclipse ExtensoJet EJ025 Installation Manual

Step 2: Set High Fire Air
Tap C
Tap A
Manometer
Set High Fire Air
Step 3: Set Low Fire Air
Step 4: Verify the Air
Settings
16
1. Set the system to high fire, but
2. Use the air curves from the appropriate ExtensoJet Datasheet
to find the differential air pressure needed at high fire. This is now
the target value for high fire.
3. Set high fire air.
Note:
A pressure tap is open when the screw inside the tap is
unscrewed approximately half a turn.
To set high fire air on a single burner system:
a. Make sure that pressure taps A and C are open.
b. Connect the manometer to taps A and C (across the air
orifice).
c. Adjust the manual butterfly valve until the high-fire
differential air pressure is at the target value.
d. Remove the manometer.
e. Close the pressure taps.
To set high fire air on a multiple burner system:
a. Make sure that pressure taps A and C of the first burner
are open.
b. Connect the manometer to taps A and C of the first burner
(across the air orifice).
c. Adjust the zone air manual butterfly valve to achieve the
target value for the first burner.
d. Measure and note the differential air pressure across the
next burner in the zone.
e. Repeat d for all the other burners in the zone (if any).
f. If all the measured differential pressures are within 0.3"
w.c. (0.75 mbar) of each other, then proceed to the next
section. If the variation is greater than 0.3" w.c. (0.75
mbar) it will be necessary to adjust the manual air butterfly
valve at each burner to improve the balance.
g. Make sure that all the pressure taps are closed.
4. Repeat step 3 for other zones (if any).
1. Set the system to low fire.
2. Connect the manometer to tap A (air inlet pressure tap).
3. Adjust the automatic zone air control valve until the
low-fire static air pressure is 0.2" w.c. This is the initial setting
only. Further adjustment may be required.
4. Repeat 2 and 3 for the other zones (if any).
Make sure all the settings are still the same after you cycle the
system several times between high and low fire.
Eclipse ExtensoJet v2 Installation Guide No. 230, 9/17/2008
DO NOT ignite the burner(s).