Lochinvar CREST 751 Manuel D'installation page 67

12
Schémas
Figure 12-2 Schéma de câblage_Modèles 751 - 2001
LARGE CONNECTION BOARD
SHIELD
A
BAS
OPTION
B 19
SHIELD 20
21
RATE
OUT
22
23
BOILER
PUMP OUT
25
SENSOR
26
SENSOR
29
TANK
SENSOR
30
31
OUTDOOR
SENSOR
32
33
BMS
IN
35
PUMP IN
36
SHIELD
A
CASCADE
B 39
SHIELD
LCD
DISPLAY
COMMUNICATION
CONTROL BOARD
LG CON BRD USB CABLE
SW1
BAS
R
PR
OPTIONAL USB/WIFI
EXTENSION CABLE
OPTIONAL
ETHERNET CABLE
E
GND
SMALL CONNECTION BOARD
1
ALARM
CONTACTS
2
3
CONTACTS
5
TANK
THERMOSTAT
6
R
ENABLE
W
9
LOUVER
PROVING
10
11
12
13
AUX
SWITCH 1
15
AUX
SWITCH 2
16
LWCO
PROBE
OR/BK
GPS1
Notes:
1. All wiring must be installed in accordance with: local, state, provincial and national code requirements per either N.E.C. in USA or C.S.A. in Canada.
2. If any original equipment wire as supplied with the appliance must be replaced, it must be replaced with wire having same wire gauge (AWG) and rated for a
minimum of 105° C. Exceptions: Replacement high vo ltage spark lead and shielded cables must be purchased from the factory. Use of a non-approved spark lead
or shielded cables can lead to operational problems which could result in non-repairable damage to the integrated controller or other components.
3. Actual connector block locations may vary from those shown on diagrams. Refer to actual components for proper connector block locations when using
diagrams to troubleshoot unit.
(suite)
BAS
BOARD
(AS APPLICABLE)
INTEGRATED CONTROL
R
PR
T
BK
BL
R
BL
R
BR
W
OR
OR/W
P
W
BL
BK
BL
INLET SENSOR
R/W
OUTLET SENSOR (S9)
R
OUTLET SENSOR (S1)
W
FLUE SENSOR
WIFI
FLUE SENSOR (S10)
DONGLE
BR
SHIELDED CABLE FROM X4
TO J12 OR J23 AS APPLICABLE
BL
R
R
OR
OR
BL
BK
BR
R
BL
HIGH LIMIT
SWITCH
BL
R
R
OR
LWCO
BOARD
TEST
OR
SWITCH
OR/BK
LWCO RESET
OR
OR
OR BR
GPS2
PR
BLOCKED FLUE
SWITCH
BK
BLOCKED DRAIN
SWITCH
"X5"
BLOCK WIRING
IS MODEL
DEPENDENT
Manuel d'installation et de fonctionnement
BOX DEPICTS
! WARNING
DUAL SENSOR
SINGLE HOUSING
DISCONNECT POWER
BOX DEPICTS
BEFORE SERVICING
OPTIONAL ITEMS
LOW VOLTAGE
120 VAC
HIGH VOLTAGE
1.5A EACH MAX
120V
GND
L N
BK
ON/OFF
SWITCH
BK
W
G
PR
T
OR
OR
GAS VALVE
(SMALL)
BL
R
GAS VALVE
(LARGE)
BL
R
BK
BK
BLOWER
1 2 3
BLOWER
1 2 3 5
W
T
R FLAME SENSE 2
R
SPARK
SPARK ROD
GENERATOR
R
P FLAME SENSE 1
FLUE DAMPER
TRANSFORMER
BK
FLUE DAMPER
BL
1
M
2
OR 3
TRANSFORMER
OR/W
OR
OR/BK
X11
BL
USB
INTERFACE
AIR VALVE
BL
OR/R
AIR VALVE
PRESSURE SWITCH
CONTACTOR
BOILER PUMP
CONTACTOR
DHW PUMP
CONTACTOR
JUNCTION
BOX
GND
M
WIRING DIAGRAM
100266647 REV C
67