BASO VLV49A Series - Manual (Page 7)

VLV49A Series Universal Replacement Gas Valve Technical Bulletin 7
4. Disconnect the sensing probe lead from Terminal 4 on the ignition
control.
5. Disconnect the high voltage cable from the spark transformer.
6. Disconnect the Pilot Valve 1 and Main Valve 3 leads from the
terminal board or end plug-in Heyco terminals (see Figures 2 and 3).
Terminal Board
Connections
Ground
Terminals
Figure 2: Terminal Board Ignition Control
with Mounting Plate
Ground
Terminals Heyco Terminal
Connections
Figure 3: Plug-in Heyco Ignition Control