Lochinvar CREST 751 Manuel D'installation page 70

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12
Schémas
Figure 12-5 Diagramme en escalier_Modèles 4001 - 5001
L1 L2 L3
TERMINAL STRIP
O
480V 3
SUPPLY
ON/OFF
SWITCH
GPS1
BLOCKED FLUE
SWITCH
BLOCKED DRAIN
SWITCH
BLOCK WIRING
70
JUNCTION BOX
INTEGRATED CONTROL
X1-3
1.5A EACH MAX
X1-12
TERMINAL STRIP
F2
F4
X1-6
X1-1
SYSTEM PUMP
SYSTEM PUMP
3.15 A
5.0 A
RELAY
CONTACTOR
X1-2
BOILER PUMP
BOILER PUMP
RELAY
CONTACTOR
X1-4
DHW PUMP
DHW PUMP
RELAY
CONTACTOR
X1-8
BLOWER
CONTACTOR
SMALL GAS
X10-1
X10-2
VALVE RELAY
LARGE GAS
X10-3
VALVE RELAY
GAS
LARGE GAS
VALVE
VALVE RELAY
X10-6
(LARGE)
SMALL GAS
X10-5
VALVE RELAY
X10-4
X1-3
X1-7
SPARK
X1-10
GENERATOR
X2-5
X6-3
X6-1
X6-10
X11
X2-5
X13-4
USB
INTERFACE
BLOWER
BLOWER
CONTACTOR
1
2
3
BAS (AS APPLICABLE)
X1-1
X1-2
X1-3
SERVICE OUTLET
480V
TRANSFORMER
FLUE DAMPER
FLUE DAMPER
TRANSFORMER
1
2
M
3
24V
TRANSFORMER
J3-6
J3-5
LWCO
TEST
J3-3
J3-2
PROBE
SWITCH
LWCO
J2-1
J3-4
LWCO RESET
BOARD
J2-2
X6-5
INTEGRATED
CONTROL
GPS2
X6-13
X6-12
AIR VALVE
PRESS. SWITCH
X3-3
X3-4
X13-1
X3-1
X6-6
X3-2
X5-1
X6-11
X5-7
X6-2
X5-2
X5-8
X6-14
X5-3
X5-9
"X5"
IS MODEL
X5-4
X6-4
DEPENDANT
X5-10
X5-5
X5-41
X5-6
X5-12
NEUTRAL
BOX DEPICTS
TERMINAL STRIP
OPTIONAL ITEMS
480V SUPPLY "N"
BOX DEPICTS
DUAL SENSOR
SINGLE HOUSING
BAS
BOARD
(AS APPLICABLE)
GROUND
INTEGRATED
CONTROL
CONNECTION BOARD
X8-20
CN6-3
X8-10
X8-10
CN6-2
X8-1
CN6-1
X7-8
CN3-6
X7-7
CN3-7
X8-13
CN3-14
X8-14
CN3-13
X8-12
CN3-12
GAS
VALVE
X8-11
CN3-11
(SMALL)
X8-5
CN3-10
X8-15
CN3-9
FLAME
CN3-4
SENSE 1
X8-6
CN3-8
SPARK
ROD
X8-16
CN3-1
X8-7
CN3-2
FLAME
SENSE 2
X8-17
CN3-3
X8-18
CN3-4
X8-3
-T
INLET SENSOR
X8-8
-T
OUTLET SENSOR (S9)
X8-2
-T
OUTLET SENSOR (S1)
X8-4
4
-T
FLUE SENSOR
X8-9
-T
FLUE SENSOR (S10)
X7-1
-T
PRE-MIX SENSOR 1 (S11)
X7-5
-T
PRE-MIX SENSOR 1 (S13)
X8-19
RP
AIR VALVE POSITION
X6-18
1
X6-9
4
X6-17
2
X6-8
5
X4
LG CON BRD
CN6-2
CN6-1
CN6-3
AIR VALVE
M
SHIELDED CABLE FROM X4
TO J12 OR J23 AS APPLICABLE
SMALL
CONNECTION BOARD
CN1-4
CN1-5
CN1-6
1
ALARM
CONTACTS
2
CN1-12
3
RUN-TIME
CONTACTS
4
CN1-10
5
TANK
THERMOSTAT
6
CN1-11
7
R
ENABLE
8
W
CN1-9
9
LOUVER
PROVING
10
CN1-8
11
24 VAC LOUVER
RELAY COIL
12
CN1-7
13
AUX
SWITCH 1
14
CN1-1
15
AUX
SWITCH 2
16
HIGH LIMIT
CN1-2
SWITCH
CN1-3
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 voltage 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.
Manuel d'installation et de fonctionnement
LOW VOLTAGE
120 VAC
HIGH VOLTAGE
LARGE
17
SHIELD
18
A
BAS
OPTION
19
B
20
SHIELD
21
+
RATE
0-10V
OUT
-
22
+
23
BOILER
0-10V
PUMP OUT
24
-
25
SYSTEM RETURN
SENSOR
26
27
SYSTEM SUPPLY
SENSOR
28
29
TANK
SENSOR
30
31
OUTDOOR
SENSOR
32
+
33
BMS
0-10V
-
IN
34
35
+
SYSTEM
0-10V
PUMP IN
-
36
37
SHIELD
38
A
CASCADE
39
B
40
SHIELD
BLOWER
LCD
DISPLAY
WIFI
DONGLE
8
43
USB CABLE
J6
J7
SW1
BAS
J8
J10
J9
J17
OPTIONAL USB/WIFI
J2
J11
J23
J12
EXTENSION CABLE
24V
E
GND
OPTIONAL
ETHERNET CABLE
LADDER DIAGRAM
100303318 REV B

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