CleaverBrooks ClearFire CFH, Operation, Service And Parts Manual, Page: 47 / 120

Chapter 4 — Commissioning
Part No. 750-295 4-5
4.6.1 Display Setup
When power is turned on (Control Circuit-Blower Switch is ON), the
Home page will appear on the CB Falcon display.
The boiler control icon should appear on this page with indication of
current status of the control.
If no icon appears when the display is powered up:
• Verify that the controller is receiving power (open control panel and
check the ‘POWER’ LED).
• Check the communication wiring between the controller and
display; verify the connections shown in Figure 4-4 .
• Once communication is established, the display will synchronize
with the controller.
Figure 4-4 Falcon communications wiring
After powering up the system for the first time it is recommended to verify the following under
Setup>Display Setup:
• In the COM 1 tab, change “Modbus address range” maximum to 10.
Note: The “Home” icon at the upper
left of the display screen always
returns to the Home Page.
The “Back” icon at the upper
right displays the previous
screen.
DC
Common
CB Falcon
Global Modbus
RED
DATA ‘A’
DATA ‘B’
COMMON
BLK WH
MB1 MB2
Falcon Controller
(Terminal J3) Display
MB1 A (RED) Terminal 5
MB1 B (BLACK) Terminal 4
MB1 C (WHITE) Terminal 3