LP-325 Rev. 009 Rel. 004 Date 12.2.20
34
PIONEER INTERNAL CONNECTION DIAGRAM
J2
J7
J7
J6-1
J6-2
J2
X6-2
X6-1
X6-4
POWER
SWITCH
X4-13
X8-1
X4-12
X8-2
X4-7
X4-17
X8-5
X4-18
PRESSURE SWITCH
X8-9
X4-19
X4-20
X4-14
X4-2
X5-4
X4-10
X8-8
X4-8
X4-9
BLOWER
COMBUSTION
GAS VALVE CABLE
X5-3
X4-15
X4-16
X4-6
X4-5
X-2
ORANGE
SPARK CABLE TO IGNITOR ELECTRODE
CONTROL
926
DISPLAY BOARD
X8-6
X4-1
X4-11
120 VAC
NEUTRAL
LINE
J6-3
X8-10
NEUTRAL
HOT
X8-3
X4-3
ASSEMBLY
FLAME RECTIFICATION PROBE
X6-5
PROTECTED BY
AN INTERNAL
6.3 AMP FUSE
X4-4
WHT
THERMISTOR
LOW WATER
CUT-OFF
TEMPERATURE SENSOR
COMBINATION SUPPLY/HIGH
( REMOVED FROM LWCO CONNECTOR)
OPTIONAL
CUT OFF
LOW WATER
WHT
RED
RED
BRN
RED
WHT
LWCO
WHT
BRN
RED
LWCO
CONNECTOR
JUMPER
(CONNECTION SHOWN
B
A
0-10 VOLT
+
-
0-10 VOLT
J5-5
J5-10
J5-6
J5-7
J5-8
J5-4
J5-3
J5-1
J5-2
J4-4
RS485 BUS
RS485 BUS
J4-4
J4-3
J3-5
J3-4
J3-3
TT TERMINALS
J1-15
J1-14
J1-13
J1-12
DHW TANK
OUTDOOR
BLOCKED VENT
AS SHIPPED)
BLUE
YEL
RED
RED
RED
RED
PINK
PINK
LT. GRN
LT. BLUE
RED
BLUE
GREY
GREY
GRN/LT. BLUE
RED/LT. BLUE
BLK/LT BLUE
GROUND
GREEN
BLACK
WHITE
BLACK
RED
RED
120V
F2
J6-6
X5-7
X5-5
J6-5
DHW PUMP
J2-4
BLACK
RED
WHITE
BLUE
BLACK
BLACK
WHITE
BLACK
RED
PINK
BLUE
YEL
RED
J1-16
J1-17
J1-10
J1-11
NOTE: JUMPER MUST
BE IN B POSITION
J2-5
SENSOR
SENSOR
HIGH FLUE
TEMP SWITCH
SENSOR
J2-1
ALARM
INPUT
PIONEER
VERSA-FLAME
FLOW STICH
DHW MODULE
OR
X5-8
J6-4
CR1
RELAY
CH PUMP
J2-8
J2-2
CR1
RELAY
Figure 23 - Internal Wiring Diagram
L. Internal Wiring Diagram