Outdoor Crest Supplemental Manual
4
Diagrams
(continued)
Figure 4-4
Wiring Diagram_2501 - 3501 Models
23
-T
-T
-T
-T
-T
-T
-T
M
1
2
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 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.
BOX DEPICTS
OPTIONAL ITEMS
BOX DEPICTS
DUAL SENSOR
SINGLE HOUSING
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
CN1-12
CN1-5
CN1-10
CN1-11
CN1-6
CN1-9
CN1-8
CN1-7
CN1-1
CN1-2
CN1-3
CN1-4
17
CN3-6
CN6-2
CN3-7
CN3-14
CN6-1
CN3-13
CN3-12
CN3-11
CN3-10
CN3-9
CN3-8
CN6-3
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
CN3-1
CN3-2
CN3-5
CN3-3
X3-2
X3-4
X6-1
X6-11
X3-1
X6-2
X6-14
X6-10
X6-13
X6-4
X3-3
X7-8
X7-7
X8-14
X8-13
X8-12
X8-11
X8-15
X8-5
X8-6
X8-16
X8-7
X8-17
X8-18
X8-1
ALARM
CONTACTS
RUN-TIME
CONTACTS
TANK
THERMOSTAT
LOUVER
PROVING
24 VAC LOUVER
RELAY COIL
AUX
SWITCH 1
AUX
SWITCH 2
SHIELD
SHIELD
A
B
BAS
OPTION
+
-
-
+
RATE
OUT
BOILER
PUMP OUT
SYSTEM RETURN
SENSOR
SYSTEM SUPPLY
SENSOR
0-10V
0-10V
TANK
SENSOR
OUTDOOR
SENSOR
+
+
-
-
0-10V
0-10V
BMS
IN
SYSTEM
PUMP IN
SHIELD
A
B
CASCADE
R
R
R
O
R
O
L
B
K
B
R
B
R
Y
BL
HIGH LIMIT
SWITCH
R
R
X6-1
X6-2
X6-3
Y
G
R
R
P
BAS
BOARD
(AS APPLICABLE)
L
B
R
L
B
R
R
B
W
R
O
W
/
R
O
P
W
L
B
K
B
K
B
/
Y
J3-5
J3-4
J3-6
LWCO
BOARD
J3-3
J3-2
J2-1
J2-2
X6-3
R
O
K
B
/
R
O
K
B
/
R
O
TEST
SWITCH
LWCO
PROBE
R
O
R
O
LWCO RESET
X6-5
GPS1
GPS2
R
B
R
O
X13-1
BLOCKED FLUE
SWITCH
R
P
X6-6
BLOCKED DRAIN
SWITCH
K
B
ENABLE
X8-3
X8-8
X8-2
X8-4
X8-9
X7-1
X7-5
INLET SENSOR
OUTLET SENSOR (S9)
OUTLET SENSOR (S1)
FLUE SENSOR
FLUE SENSOR (S10)
PRE-MIX SENSOR 1 (S11)
PRE-MIX SENSOR 1 (S13)
R
W
X4-1
X4-2
X4-3
X8-20
X8-10
X5-8
X5-7
X5-3
X5-9
X5-2
X5-4
X5-10
X5-5
X5-41
X5-6
X5-12
X5-1
"X5"
BLOCK WIRING
IS MODEL
DEPENDANT
K
B
T
L
B
W
/
R
R
W
Y
G
Y
G
R
B
X10-1
X1-3
X10-4
X1-1
X1-12
X1-2
X1-4
X10-2
X10-5
X10-3
X10-6
X1-6
ON/OFF
SWITCH
GND
GAS VALVE
(SMALL)
GAS VALVE
(LARGE)
K
B
W
R
P
T
R
O
R
O
L
B
R
L
B
X6-18
X6-8
X1-8
G
X6-9
X6-17
BLOWER
K
B
Y
G
W
T
N
G
R/W
BK/W
X2-3
X1-7
X1-10
X1-5
FLAME SENSE 2
FLAME SENSE 1
SPARK
GENERATOR
SPARK ROD
X2-5
FLUE DAMPER
TRANSFORMER
X13-4
FLUE DAMPER
24V
TRANSFORMER
L
B
R
R
R
P
K
B
L
B
Y
R
O
BL
Y
BK
X1-2
X1-3
X1-1
INTEGRATED CONTROL
LARGE CONNECTION BOARD
SMALL CONNECTION BOARD
JUNCTION
BOX
X11
X4
USB
INTERFACE
BOILER PUMP
CONTACTOR
SYSTEM PUMP
CONTACTOR
DHW PUMP
CONTACTOR
HIGH VOLTAGE
LOW VOLTAGE
120 VAC
1.5A EACH MAX
WIRING DIAGRAM
100303303 REV B
1
R
R BL
1
R
L1 L2 L3
208V 3
N
2 3
1
1 2
4 5
3
4
CN3-4
E
GND
LG CON BRD
WIFI
DONGLE
SW1
J2
8
43
J9
J17
J23
J12
J11
Y
J8
USB CABLE
OPTIONAL USB/WIFI
EXTENSION CABLE
J10
LCD
DISPLAY
BL
R
J6
J7
COMMUNICATION
CONTROL BOARD
OPTIONAL
ETHERNET CABLE
PR
GY
24V
SHIELD
CN6-3
CN6-1
CN6-2
BAS
R
SERVICE
OUTLET
SHIELDED CABLE FROM X4
TO J12 OR J23 AS APPLICABLE
0
