CB FALCON
750-265 10
*Sensors attached to the Falcon MUST be all 12K or 10K sen-
sors (don't mix and match).
INSTALLATION
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.
To prevent possible hazardous boiler operation, verify
safety requirements each time a control is installed on
a boiler.
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property damage.
Disconnect the power supply before beginning
installation to prevent electrical shock and equipment
damage. More than one power supply disconnect can
be involved.
When Installing This Product…
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous condi-
tion.
2. Refer to the wiring diagram provided as part of the appli-
ance or refer to Fig. 3.
3. Check the ratings given in the instructions and on the
product to make sure that the product is suitable for your
application.
4. Installer must be a trained, experienced combustion ser-
vice technician.
5. Disconnect the power supply before beginning installa-
tion to prevent electrical shock and equipment damage.
More than one disconnect may be involved.
6. All wiring must comply with applicable local electrical
codes, ordinances and regulations.
7. After installation is complete, check out product opera-
tion as provided in these instructions.
Vibration
Do not install the relay module where it could be subjected to
vibration in excess of 0.5G continuous maximum vibration.
Weather
The relay module is not designed to be weather-tight. When
installed outdoors, protect the relay module using an approved
weather-tight enclosure.
Mounting The Falcon
1. Select a location on a wall, burner or electrical panel.
The Falcon can be mounted directly in the control cabi-
net. Be sure to allow adequate clearance for servicing.
2. Use the Falcon as a template to mark the four screw
locations. Drill the pilot holes.
3. Securely mount the Falcon using four no. 6 screws.
NOTE: The device can be removed and replaced in the field
without rewiring.
WIRING
WARNING
Electrical Shock Hazard.
Can cause serious injury, death or property
damage.
Disconnect power supply before beginning wiring to
prevent electrical shock and equipment damage. More
than one disconnect may be involved.
Ground Connection
The ground connection on the controller must not be used as a
central ground connection for the 120 Vac connections.
1. Use the common ground terminal next to the controller,
close to connector J4 terminal 12.
2. Connect the central ground terminal with the connection
contact of the controller (connector J4 terminal 12).
3. Connect the ground wire of the main power connector,
the CH pump, the DHW pump (if present) and the igni-
tion wire to the central ground terminal.
Electrical Connections
1. Refer to Table 4 for terminal contact ratings.
2. Use 18 AWG or larger wires.
3. Wire according to specifications, following all local ordi-
nances and requirements.
Device Power Supply, 24Vac
1. 24Vac Supply to connector J8 terminal 1.
2. 24Vac Return to connector J8 terminal 2.
Table 1. NTC Sensors (temperature versus resistance).
Temp C (F)
12K NTC (kOhm)*
Beta of 3750
10K NTC (kOhm)*
Beta of 3950
-30 (-22) 171.70 176.08
-20 (-4) 98.82 96.81
-10 (14) 58.82 55.25
0 (32) 36.10 32.64
10 (50) 22.79 19.90
20 (68) 14.77 12.49
25 (77) 12.00 10.00
30 (86) 9.81 8.06
40 (104) 6.65 5.32
50 (122) 4.61 3.60
60 (140) 3.25 2.49
70 (158) 2.34 1.75
80 (176) 1.71 1.26
90 (194) 1.27 0.92
100 (212) 0.95 0.68
110 (230) 0.73 0.51
120 (248) 0.56 0.39
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