Owner`s manual

PLC Control Startup
22
Gas Pressure Adjustments
Heat
Relay
Blower 1
Relay
Circulation Blowers’
Pressure Switch
(See View D)
Switch 4
(See View B)
View B
ENB 2
DIR 2
ENB 1
DIR 1
SW4
Interface Slide Tray
(SG3240G)
Interface Board
(See View A)
Blower 2
Relay
Interface Board --- View A
Combustion Blower
Pressure Switch
(See View D)
Ignition Control
Board
(See View C)
Pressure Switch
Adju stment
Screw
+
---
Ignition Control Board --- View C
View D
Figure 16