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Figure 16: Typical Electric Heater Wiring Diagram
BR
Elec. Heat Enable
TB1
TB1
BL
Enable 1
st
Stage or SCR Heating
Enable 2
nd
Stage Heating
W
GY
W1
W2
See separate SCR or
up to 4 Stage Elec.
Heater Drawing
W2
W1
C
C
Enable 4
th
Stage Heating
W3
W4
Enable 3
rd
Stage Heating
W4
W3
O
O
HARM: Heating Analog Relay Module
0843P-0602
Set jumper to 3%
Set jumper to
0-15V
TB1
W
BK
W2
W1
BL
C
C
W3
W4
BR
SEE ELECTRIC HEATER
DRAWING.
UO-6
Gnd
FROM IOPRO
812U
R
BK
R
BK
4
TB1
W
W
Set pot to 0.5V
Set pot to 6V
Set pot to 7.5V
Set pot to 9.5V
Set R2
Pot To
6V
Set R2
Pot To
7.5V
Set R4
Pot to
9.5V
TB1
R
SEE UNIT 24V CONTROL
TERMINAL BOARD (TB1)
TB1
C
R
w
1
BL
Set R1
Pot To
0.5V
Optional
UO-6
Gnd 4
+ 3
R
BK
BK
R
-
+
Heat Modulating
See Elec. Heater
or Gas Furnace
for exact wiring
connections
0-10 Volt Control Wire for SCR
Electric Heat Diagram shows IOPRO
board , if unit is ordered Controls
by others the 0-10 volt wire will run
to TB1 Terminal Blocks
PR Series Installation, Operation, and Maintenance Manual
Содержание PR 036 Series
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