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ADJUSTMENTS
A
IR
I
NTAKE
B
OOT
A
IR
S
ETTING
1. Follow the instructions in the Boiler and Burner Installation Manuals for adjusting and setting the burner.
WARNING:
Failure to properly adjust the burner after installing this kit can result in severe personal injury, death or
substantial property damage.
2. Loosen the air band screw on the Air Boot™. Position the screw at the initial setting on the following page. Use this
setting only as a starting point. Do not leave the burner with this setting unless your testing proves it to be acceptable.
INITIAL AIR BOOT™ AIR CONTROL SETTINGS
Input Range (GPH)
Air Band Setting
0.55 – 0.70
25°
0.75 - 1.00
60°
1.10 - 1.75
80°
2.00 - 2.55
180°
3. Start the burner and adjust the air control as needed to achieve the required CO2 and smoke levels. Set over fire
draft to appliance manufacturers’ specifications (typically -.02” of water). Secure air control knob with indicator
bracket. If draft levels are not obtainable or controllable, use standard industry methods to control the draft or call the
Field Controls Tech Line at 1-800-742-8368 for more information.
4. Adjust the counterweight on the vacuum relief valve so the gate remains closed during the burner setup and testing.
V
ACUUM
R
ELIEF
V
ALVE
C
OUNTERWEIGHT
1. After you have completed adjusting the burner, adjust the VRV counterweight.
2. With the burner running normally, rotate the counterweight screw counterclockwise until the gate just begins to open.
3. Check the combustion again to verify no changes have occurred. If OK, hold the counterweight screw in position and
tighten the hex nut against the gate to lock the screw permanently in position.
P/N 46330800 Rev D 11/00
