BASO VLV49A Series - Manual (Page 10)

10 VLV49A Series Universal Replacement Gas Valve Technical Bulletin
17. After installation of the replacement valve is complete, except for the
attachment of the red lead wire, turn on the gas at the manual
shutoff valve.
a. Reconnect the power supply lead wire to the ignition control and
turn the power On.
b. Set the thermostat to the highest setting. The pilot valve will
open, spark will be energized, and the pilot will light.
c. Test for gas leaks in the pilot line with a soap solution.
d. After the check is complete, turn off the power and connect the
red lead wire to Terminal 3 on the ignition control.
18. Turn on the power and set the thermostat to the desired setting.