Operating instructions

02/14/2006 11 NI806
Cooling, Special Dehumidification
The BK tab and the BK peg jumper provide the industry standard 12% blower speed reduction to “pull
out” additional moisture from the air. Provide an external humidistat between BK and R and pull or
permanently disconnect the BK jumper. With the BK terminal at 0 volts the 12% blower speed reduction
is activated.
Utility Load Control
If applicable for your installation and your utility authorized electric rate, at the bottom of the control
board is a blue wire jumper. Simply remove this jumper and extend the two tabs to the power company
receiver having N.C. logic.
 If opposite control logic is required contact factory for other wiring instructions.
Setup or Programming
Electric Furnace Control – Inside View, Right Board
Room Thermostat Type
On the control board left side is a peg jumper which must be for conventional heat/cool.
Heat Blower Speed Selection
On the right side is a peg jumper for a LO/MED/HI selection. If 1035 CFM is not adequate, jumper E to
W.
 10 kW LO 600 CFM
 15 kW MED 900 CFM
 20 kW HI 1035 CFM
Cool Minimal Blower Speed Selection
At the control board right side is A/B/C/D selection. It is very important that this selection be matched to
the cooling ton installed within the system. This is independent of the heating as outlined and setup
above.
 A – 3-3.5 ton 1200 CFM
 B – 2.5-3 ton 1100 CFM
 C – 2-2.5 ton 1000 CFM
 D – 2 ton 900 CFM
Operation Indicators
Heat Sequencing Board – Inside
Green LED
When illuminated proper 24 volts are available.
Red LED’s
Each represents the proper stage on.
HL Red LED
Illuminates with hi-limit and interrupt of electric elements.