CFE-CHE-WRG-02
COPPER-FIN II® WATER HEATERS / BOILERS WIRING DIAGRAMS
MODELS CF/CH 991 - 2071
LINE
60Hz
BK
ALARM
INPUT 4
PR
OPTIONAL
HI-LIMIT
AUX. HI-LIMIT
TEST
PROBE SWITCH
O.C.
J1
~~~
~~
~~~~~~~
BL/
BK
T
24 V AC
C ON TROL
T
T
CIRCUIT BREAKER
BL
BR
6 3
5 2
4 1
BL/BK
RESET
PR
J2
2 3
1
P
J3
PR
BL/BK
BL
GND
LOW
HIGH
O
INTERMITTENT
ALARM ENABLE
RELAY
C
HD#1
STAGE #1
PR/BK
1C 1NO
N.O.
PR
O/
BK
PR
CONTINUOUS INTERMITTENT
A3
3C
PR/BK
FLOW
SWITCH
O
R
R/
O
3NO
14
FLAME
CURRENT
TEST PINS
HEAT
GY
HEAT
R/
BK 17
18
STAGE #2
BL
FIELD SUPPLIED LOUVER /
POWER VENTER CONNECTIONS
PROVING
SWITCH
OPEN
O/
BK
REMOVE
JUMPER
GY
GY
C2 NO2
BL/
BK
BR
C1
NO1
BR/ PR
W
C1
LE
W
ALARM
PR
INPUT 3
BR/W
PROVING RELAY
2
LOUVER /
VENTER
ENABLE/
CONTACT
RELAY BK/
W
NO1
22
21
STAGE #4
PROVING RELAY
T
4 1
5
T
4
P-SW#1
T
1
IGN#1-PS
NO2 B
3 IGN#2-PS
R
B 6
P-SW#2
R
OPTIONAL LOUVER/VENTER
CONTROL RELAYS
C2
R
= R E LA Y S LO C A TE D O N C O N TR O L
PANEL
R
= R E LA Y S LO C A TE D I N W IR I N G B O X
= LE D S LO C A TE D O N D I S P LA Y B O A R D
= O P TIO N A L D IN R A IL C O N N E C TO R S
LO C A TE D IN E LE C TR IC A L W IR I N G B O X .
C
FFR
NO
Y
24COM
RESET
24VAC
NO
-
GY/W
TRIAL
3
GY/W
IGNITER
GY/
W
10
RESET
BL/W
PURGE
BL
PROVING RELAY
6 3 T/W
C
PRESSURE
SWITCH #2
BR
W
9
PR
7
BR/W
6
T
4
PR/BK
5
8
1
BR
2
3
PR
4
BR/W
5
6
PR
BR
BR/W
BR/W
PR/BK
9
8
7
6
5
4
3
2
1
RELAY
BOARD
CHASSIS
GROUND
BK
NEU
F1
F2
W
-
+
BK/
W
W
BK
6
1
4
7
5
2
5
8
4
3
6
9
STATUS
W
BK/W
Y
R/O
INLET
PR
PR /BK
PR /BK
N O TE : SO ME ST AG ES HAVE
MO RE T HAN O NE G AS VAL VES .
R/O
OUTLET
SYSTEM/TANK
STAGE #3
Y
R/O
ITEM
G
BR/W
BR/W
STAGE #4
Y
R/W
1
Y
M/S
FF
BR
BR
PR
W
BLOWER #2
R LOW
~~~~
W
BK HIGH
2
MODULE
#2
TH
PI
24COM
RESET
24VAC
MV
PS
Y
BLOWER #1
HIGH
~~~~
LOW
W
R
BK
3
R/
O
STAGE #2
Y
R/BK
7
11
P
R
10
G
STAGE #1
Y
R
R/O
8
+
W
Y
RT1
1 S2/FS IGNITION
O/W
NO
2
BK
9
5 S1
LINE
4
TO POWER
SOURCE
PUMP OPTIONAL
ON BOILERS
P
G
M/S
FF
BK
W
STATUS
RT2
PR
GY/
W
Y
BK/W
R
MV
PS
Y
NO
P
Y
Y
P
NC
C
PU
C
OPTIONAL
RUN TIME
RELAY
CONTACTS
IGNITION
MODULE
#1
TH
PI
Y
NO
C
PR/BK
FLAME
CURRENT
TEST PINS
BL
W
BK
+
W
R/W
O/
20 W
19
STAGE #3 O/W
-24VAC
Y
R/BK
BL
PR/
BK
ALARM
-
OPTIONAL
ELECTRONIC
TEMPERATURE
CONTROLLER
R/
W
HIGH/LOW GAS, AUX. HI-LIMIT
AUX. LIMITS , EXT. FLOW SWITCH
CLOSED
9
8
7
6
5
4
3
2
1
BL
PRESSURE
SWITCH #1
4C 4NO
EXAMPLE DEVICES:
10
RESET
BL/W
PURGE
NO
STAGE #4
BARS REMOVED AND ATTACHED
DEVICES IN NON- ALARM STATE.
O
P
C
SENSORS
NOTE: SHOWN WITH SHORTING
O
BL
COM
COM
GY
O
16
F2
2 NEU
S2/
1
FS
GY
IGNITER
STAGE #1
2C 2NO
AL
PUMP RELAY
BR
F1
3
TRIAL
3 DEM
Y
Y
OPTIONAL
CONTACTS
ANY FAILURE
P
BK
+
5 S1
LINE
4
GY
RESET
OVERRIDE
15
CONTINUOUSLY INTERMITTENTLY
MONITORED
MONITORED
MOTOR
CONTACTS
-
Y
ALARM
CONTACTS
R
NO
OPTIONAL ALARM
BELL 24V OUTPUT
SILENCE
BL
R
TD
PR
PR
PR
2 DEM
NO
C
PR
BR
C
PR
INTERMITTENT
ALARM ENABLE
RELAY
AE
#2
FAIL
FAIL
COM
ALARM INPUTS
1, 2, 3 & 4
JOIN HERE
PR
#1
STAGE #2
B3
OK
OK
BL
Y
Y
CONTINUOUS INTERMITTENT
B
2
Y
Y
11
FIELD INSTALLED
SAFETY DEVICES
A1 A2 A3 B1
W
W
PUMP
O/BK
~~ ~
~~ ~
BL/BK
-
Y
23
13
HD#2
STAGE #3
B1 B2 B3
P
BL
TERMINAL
STRIP
A1 A2
BK
Y
12
HD1
24
ALARM
INPUT 1
THIS HEATER MAY BE
G
MORE BRANCH
CONNECTED TO ONE OR
CIRCUITS. TO PREVENT ELECTRICAL SHOCK,
ENSURE ALL BRANCH CIRCUITS ARE DECHASSIS
ENERGIZED BEFORE ATTEMPTING TO SERVICE GROUND
THIS EQUIPMENT.
2
120 VAC BK
G
-
+
O /BK
PR
PR
OPTIONAL HIGH-LOW GAS
PRESSURE SWITCHES
ALARM
INPUT 2
CHASSIS
GROUND
Y
PR
BL
Y
PR
O
J4
RESET
+
BL
24 VAC
BL
WARNING:
1
ON/OFF
POWER
SWITCH
N E U TR A L
GROUND
W
120 VAC 15AMPS
OPTIONAL
BOILER ONLY
O.A.
SENSOR
INDICATES
JUNCTION POINT
(ELECTRICALLY SAME)
FIELD
INSTALL AS
NECESSARY
CLOSED END SPLICE
DOTTED LINE
INDICATES OPTIONAL
EQUIPMENT
T=TAN
W = WHITE
Y=YELLOW
BK = BLACK
BR=BROWN
PR=PURPLE
G=GREEN
BL=BLUE
GY=GRAY
P=PINK
R=RED
O=ORANGE
Y/G = YELLOW WITH GREEN STRIPE
W
NOTES:
.
(1) WHERE POSSIBLE, ALL SWITCHES AND CIRCUITRY ARE SHOWN IN THEIR AT REST STATES
(2) ADDITION OF ENERGY MANAGEMENT SYSTEMS OR OPTIONAL LIMIT SWITCHES TO THE TERMINAL
STRIP REQUIRE THE REMOVAL OF SOME OF THE SHORTING BARS FROM THE TERMINAL STRIP.
(3) SCHEMATIC IS WIRING DIAGRAM, REFER TO ACTUAL COMPONENTS FOR EXACT TERMINAL LOCATIONS.
(4) WHEN REPLACING DAMAGED WIRING, USE EQUIVALENT TYPE AND GAUGE.
LBL20012 REV A
WIRING BOX CONNECTIONS - Copper-Fin II® Water Heaters/Boilers
LBL2183 Rev. A
2 of 4
MAIN UNIT CONNECTIONS - Copper-Fin II® Water Heaters/Boilers
LBL2183 Rev. A
3 of 4
CONTROL BOX CONNECTIONS - Copper-Fin II® Water Heaters/Boilers
LBL2183 Rev. A
Lochinvar Corporation • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: 615-547-1000
www.Lochinvar.com
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