Steffes DLF40B - Manual (Page 7)

6
Furnace Control Panel
(cont'd)
SUMMER/WINTER Toggle Switch
This toggle switch will vary core charging in the furnace. It allows for a reduced heating capacity during the summer
months if the user prefers to leave the furnace "ON" for emergency heat purposes during this time. (Refer to Table 1,
Brick Core Charging Schedule, in this manual for more information on charging levels in relation to the position of this
switch and outdoor temperature.)
AUTO/HIGH/LOW Toggle Switch
This toggle switch can be used to override the automatic outdoor temperature sensing system.
AUTO = Normal operating position. The brick core charge level is controlled automatically by the outdoor
temperature sensor.
HIGH = The furnace will target a level 3 (maximum) core charge during an off­peak time regardless of the
outdoor temperature information it is receiving.
LOW = The furnace targets a minimum of a level 1(1/3) core charge during an off­peak time unless the
outdoor temperature sensor is signaling for a higher charge level.
OVERRIDE Light (Power Company Permitting)
This red light illuminates whenever a peak control override is initiated and remains illuminated for the duration of the
override period. The function of the override indicator light works in conjunction with START and CANCEL toggle
switches.
START and CANCEL Toggle Switches (Override Feature, Power Company Permitting)
The furnace has a built­in peak override feature. This feature allows the heating elements in the furnace to come "ON"
during a peak control time provided the power company permits the use of this option. Since not all power companies
permit use of the override option, all furnaces are shipped with this feature disabled. If the feature is enabled in the
furnace, these toggle switches initiate and cancel the override of a peak control time.
START = Initiates an override of a peak control time allowing the heating elements to come "ON". The
furnace targets a level 1 (1/3) core charge during an override cycle. If initiating the peak
control override feature, the override will only last for the duration of the peak control period at
which time it resets itself automatically unless the user manually cancels it prior to then. (The
override light will illumniate if the START switch is toggled.)
CANCEL = Allows for manual cancellation of a peak override any time during an override cycle. An
override cycle will automatically cancel itself at the start of the next off­peak period.
The peak override option may not be available in your area. Please consult your power
company if you are unsure of whether this option is available to you. If so and you desire
to enable the feature, contact your power company for instructions.
NOTE