Steffes 612EXT Owner & Installers Manual - Manual (Page 19)

Jumper Configurations
Jumper Connections
J-1 Connected with a jumper in all modes except when using automatic charge control with two-mode circuit boards.
J-2 Always connected with jumper.
J-3 Connected with violet jumper except when fans are to be disabled during the charge period.
J-4 Input voltage selector: When fan circuit input voltage is 208-240 VAC,
J4-2 to J4-3 are connected. When fan circuit input voltage is 120 VAC, J4-1 to J4-2 and J4-3 to J4-4 are connected.
J-5 Factory wired with plug-in header connector.
J-6 Fan run time based charging jumper: In OP. MODE #1, off-peak heat call can bring core to a 1/3 charge level when no
other charging method is being used. OP. MODE #2 will allow off-peak heat calls to bring core to full charge. OP. MODE
#3 will not allow core charging based on fan run time (positive off).
J-7 24 VDC output from circuit board used for auxiliary control devices or to run peak and pre-peak signals on DC power
rather than AC power.
J-8 When connected, enables fans during pre-peak charging mode.
CIRCUIT BOARD FACE PLATES - EXT SERIES
CHARGE CONTROL CIRCUIT BOARD CONFIGURATORS - EXT SERIES
Multi-Mode Circuit Board Configurator
FIGURE 23
Two-Mode Circuit Board Configurator
FIGURE 24
(NOTE: When reading the Typical System Wiring Diagrams and Unit Wiring Diagrams, use
these skematics to determine which circuit board your heater incorporates.)
~ C ~ C ~ C ~ C ~ C
OMFOR OMFOR OMFOR OMFOR OMFORT T T T T Z Z Z Z Z
O O O O ONE NE NE NE NE ~ ~ ~ ~ ~
85 85 85 85 85 55 55 55 55 55
O O O O O N N N N N
OFF OFF OFF OFF OFF
HIGH HIGH HIGH HIGH HIGH
M E D M E D M E D M E D M E D
LO LO LO LO LOW/A W/A W/A W/A W/AUTO UTO UTO UTO UTO
HEA HEA HEA HEA HEAT T T T T
STORA STORA STORA STORA STORAGE GE GE GE GE
CHARGE CHARGE CHARGE CHARGE CHARGE
LEVEL LEVEL LEVEL LEVEL LEVEL
OFF-PEAK OFF-PEAK OFF-PEAK OFF-PEAK OFF-PEAK CHARGING CHARGING CHARGING CHARGING CHARGING O O O O O N-PEAK N-PEAK N-PEAK N-PEAK N-PEAK
TWO-MODE
FIGURE 20
~ C ~ C ~ C ~ C ~ C
OMFOR OMFOR OMFOR OMFOR OMFORT T T T T
Z Z Z Z Z
O O O O ONE NE NE NE NE
~ ~ ~ ~ ~
Hi Hi Hi Hi High gh gh gh gh Lo Lo Lo Lo Low w w w w
CHARGING CHARGING CHARGING CHARGING CHARGING
O O O O OVERRIDE VERRIDE VERRIDE VERRIDE VERRIDE
SENSOR SENSOR SENSOR SENSOR SENSOR PEAK PEAK PEAK PEAK PEAK
O O O O ON-PEAK N-PEAK N-PEAK N-PEAK N-PEAK
OFF-PEAK OFF-PEAK OFF-PEAK OFF-PEAK OFF-PEAK
CANCEL CANCEL CANCEL CANCEL CANCEL
--O --O --O --O --O VERRIDE VERRIDE VERRIDE VERRIDE VERRIDE -- -- -- -- --
VARIABLE CHARGE
FIGURE 22
MULTI-MODE
FIGURE 21
O O O O O N-PEAK N-PEAK N-PEAK N-PEAK N-PEAK CHARGING CHARGING CHARGING CHARGING CHARGING
~ C ~ C ~ C ~ C ~ C
OMFOR OMFOR OMFOR OMFOR OMFORT T T T T Z Z Z Z Z
O O O O ONE NE NE NE NE ~ ~ ~ ~ ~
85 85 85 85 85 55 55 55 55 55
OFF-PEAK OFF-PEAK OFF-PEAK OFF-PEAK OFF-PEAK