Service manual
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Figure 6 – Display, Appliance Temperature Controller and Indicating LED
The Boiler Temperature Controller (BTC) for this appliance is a Camus 780014 SmartFlame control. This
controller accommodates up to four-stage control with six modes of operation which provides setpoint as
well as rest control. It provides the following:
1. Readings of inlet and outlet water temperatures as well as ∆T temperature rise.
2. Six pre-set modes of operation; mode 1, 2, 4, and 5 for heating, mode 3 for DHW and mode 6 for
operation by a remote controller.
3. Operation as an auto reset limit.
4. Operation as a control for inlet water temperature.
5. Optional tank mounted sensor used in conjunction with inlet sensor.
6. Adjustable pump delay feature based on ∆T temperature difference between inlet and outlet
temperatures. Accepts 1/6 hp. pump directly across terminals 13 & 14.
7. Adjustable; target temp, inter-stage differential, on delay between stages, minimum on time per
stage, minimum off time per stage.
8. Display of run hours for maintenance purposes. Counter wraps around at 1000 hours.
9. Flame failure signal 24 V.
10. Molex connector for ease of service.
11. Error message display.
12. Test override feature to test pump operation, stages 1, 2, 3, 4, and 5 and alarm.
13. Pump exercising feature runs pump 10 seconds every three days of no pump operation.
Setting the Appliance Temperature Control
Press and hold the ITEM, UP and DOWN buttons simultaneously for 1 second. The appliance will shut
down and pressing the ITEM key and then selecting the desired setting using the UP, DOWN buttons,
can now make the settings. Pressing the ITEM key again will cause the last setting to be accepted. After
settings have been made wait 30 seconds for the control to return to normal operating mode. In normal
operating mode the inlet temperature, outlet temperature, ∆T temperature and ON hours can be viewed
by repeatedly pressing the ITEM key only. If you wish to check the setting you will have to start again by
pressing and holding the ITEM, UP and DOWN buttons simultaneously for 1 second, and then use only
the ITEM key to scroll through the settings. After checking the settings allow the control to return to
normal operation on its own.