Lochinvar SNA285-125 Manuale Utente
75
13
Diagrams
(continued)
DISPLAY
X1-8
X5-5
X5-13
X5-6
X5-12
INTEGRATED CONTROL
BLOWER
X1-1
X2-2
X2-1
X1-7
GAS
VALVE
VALVE
FLAME
ROD
ROD
SPARK
ROD
W/R
G
R
R
T
W
BK
G
R
1
3
2
W
G
BOX DEPICTS
OPTIONAL ITEMS
WIRING DIAGRAM LBL20025 REV C
WARNING
DISCONNECT POWER
BEFORE SERVICING
INLET
SENSOR
SENSOR
OUTLET
SENSOR
SENSOR
FLUE
SENSOR
SENSOR
MANUAL RESET
HI-LIMIT
HI-LIMIT
BLOCKED
DRAIN
DRAIN
X5-8
X5-1
X5-2
X5-9
X5-7
X5-14
X5-11
X5-3
X5-4
X5-10
BK
R
W
Y
BL
PR
OR/BK
P
OR
GY
BL
PR
OR
P
OR
GY
1 2
4 5
3
TANK
SENSOR
0-10V
+
-
CONNECTION BOARD
CN3
X4
X1-3
X1-5
X1-6
120V
SUPPLY
SUPPLY
DHW
PUMP
PUMP
JUNCTION
BOX
TERMINAL STRIP
OR
W
BK
OR
W
BK
W
L
N
L
GND
N
BK
Y
EXTERNAL
LIMITS
LOW
WATER
CUT-OFF
CN5-1
CN2-11
CN2-4
CN2-3
X6-9
X6-3
X6-5
BR
Y
BK
CN2-8
CN2-2
CN2-7
CN2-1
ALARM
CONTACTS
RUN-TIME
CONTACTS
X3-1
X3-3
X3-4
X3-2
R
R
PR
PR
EXTERNAL
CONTROL
AUTO RESET
HI-LIMIT
HI-LIMIT
CAUTION
HIGH VOLTAGE SPARK LEAD
CN5-3
CN5-4
CN5-2
24 VAC
COM
L
N
GND
GND
TR1
X8
120 VAC
LOW VOLTAGE
HIGH VOLTAGE
X3
PC
INTERFACE
CN2-6
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: Repl acement high voltage spark lead and ribbon cables must be purchased from the factory. Use of a
non-approved spark lead or ribbon 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.
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: Repl acement high voltage spark lead and ribbon cables must be purchased from the factory. Use of a
non-approved spark lead or ribbon 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.
4
3
6
5
2
1
CN1
CN5
CN2
CN3
S4
S2
S1
S3
AIR PRESSURE
SWITCH
SWITCH
OR/BK
OR
PUMP
RELAY
CN2-9
OR
X6-10
CN2-12
X6-7
X6-2
GAS
PRESSURE
SWITCH
CN4-3
CN4-6
CN4-1
CN4-4
CN4-5
CN4-2
CN4
CN2-10
X6-8
Y
CN2-5
X6-4
P
BL
GY
1
2
3
4
O-TEMP HEX SW
Figure 13-2 Wiring Diagram
Installation & Service Manual
TM