Lochinvar CREST 102 Series - Page 13

13
Dual Fuel Supplemental Manual
3 Diagrams (continued)
Figure 3-2 Wiring Diagram_751 - 2001 Models
BLOWER
1
OUTLET SENSOR (S9)
OUTLET SENSOR (S1)
FLUE SENSOR
FLUE SENSOR (S10)
DISCONNECT POWER
BEFORE SERVICING
!
WARNING
1
2
3
Notes:
diagrams to troubleshoot unit.
1
2
3
5
6
9
10
11
12
13
15
16
19
20
21
22
23
25
26
29
30
31
32
33
35
36
39
ALARM
CONTACTS
CONTACTS
TANK
THERMOSTAT
LOUVER
PROVING
AUX
SWITCH 1
AUX
SWITCH 2
SHIELD
SHIELD
A
B
MODBUS
OPTION
RATE
OUT
BOILER
PUMP OUT
SENSOR
SENSOR
TANK
SENSOR
OUTDOOR
SENSOR
BMS
IN
PUMP IN
SHIELD
SHIELD
A
B
CASCADE
R
R
OR
OR
BL
BK
BR
R
HIGH LIMIT
SWITCH
R
R
R
PR
BAS
BOARD
BL
R
BL
R
BR
W
OR
OR/W
P
W
BL
BK
LWCO
BOARD
OR
OR/BK
OR/BK
TEST
SWITCH
LWCO
PROBE
OR
OR
LWCO RESET
BR
PR
BK
ENABLE
INLET SENSOR
R
W
"X5"
BLOCK WIRING
IS MODEL
DEPENDENT
T
BK
BL
R/W
R
W
BR
L N
GND
120V
ON/OFF
SWITCH
GND
CAM
SWITCH
BK
W
PR
T
OR
OR
BL
R
BL
G
BLOWER
R
BK
W
T
BK
TRANSITION
FLAME SENSE
MAIN
FLAME SENSE
SPARK
GENERATOR
SPARK ROD
FLUE DAMPER
TRANSFORMER
FLUE DAMPER
TRANSFORMER
BL
R
R
R
P
BK
BL
OR
BK
INTEGRATED CONTROL
LARGE CONNECTION BOARD
SMALL
CONNECTION
BOARD
JUNCTION
BOX
X11
USB
INTERFACE
BOILER PUMP
CONTACTOR
CONTACTOR
DHW PUMP
CONTACTOR
HIGH VOLTAGE
LOW VOLTAGE
120 VAC
1.5A EACH MAX
OR
OR/BK
OR
AIR VALVE
OR/W
BL
BL
BL
OR/R
OR/W
SMALL
PROPANE
VALVE
SMALL
NATURAL
VALVE
OR/BK
R/W
LARGE
PROPANE
VALVE
LARGE
NATURAL
VALVE
R/BK
CAM
SWITCH
CAM
SWITCH
PROPANE LIGHT
NATURAL LIGHT
AIR VALVE
PRESSURE
SWITCH
CAM
SWITCH
PROPANE LGPS
NATURAL LGPS
BLOCKED FLUE
SWITCH
BLOCKED DRAIN
SWITCH
CAM
SWITCH
M
M
BOX DEPICTS
DUAL SENSOR
SINGLE HOUSING
BOX DEPICTS
OPTIONAL ITEMS
USB CABLE
WIFI
DONGLE
OPTIONAL USB/WIFI
EXTENSION CABLE
OPTIONAL
ETHERNET CABLE
LG CON BRD
E
GND
BAS
R
PR
LCD
100267387 REV C
SHIELDED CABLE FROM X4
TO J12 OR J23 AS APPLICABLE
2
3