Specifications

22
stcudorP retaW htimS .O .A Service Workbook
Ashland City, Tennessee 2005© Training Department
24VAC IN
L1 IN
TB4-6
24VAC IN
24VAC IN
K1 PUMP
L
1 HOT
TB5
RELAY
K4
K4
SECONDARY 24 VAC
PRIMARY 120 VAC
CCB
CN9
CN9
CN8-4
CN12-3
CN12-1
CN7-1
CN4-4
CN4-4
K4
+
+
IRI *
VALVE
GAS
3 AMP FUSE
ICB #2
ICB #1
3 AMP FUSE
CN9
5 AMP FUSE
CN10
R
LED
LED
R
CN10
CCB
LED
LED
IN 0
K5
CN10
R
LED
G
GAS
VALVE
TRANSFORMER T1
CONTROL BOX
24VAC NEUT. IN
24VAC NEUT. IN
24VAC NEUT. IN
CN4-3
CN13-6
CN13-3
CN13-3
CN13-6
CN4-3
CN12-5
CN12-4
CN7-2
IRI *
VALVE
BLEED
CN8-3
_
-
L2 IN
RELAY*
STAGE #2
VALVE/S
GAS
VALVE/S
STAGE #1
K2 IRI G.V.
IRI *
GAS
2 NEUT.
L
TB7
TB5
K3
CN15-1
CN16-1
CN15-2
CN16-2
CN15-2
CN16-2
K7
CN15-1
CN15-1
CN16-1
K3
GAS VALVE
24VAC HOT
GAS VALVE
24VAC HOT
GAS VALVE
24VAC HOT
GAS VALVE
24VAC HOT
GAS VALVE
24VAC HOT
24VAC NEUT.
GAS VALVE
24VAC NEUT.
GAS VALVE
CN15-2
ICB3 AND ICB4 WIRING
SAME AS ICB1 AND ICB2
ELECTRICAL CONNECTION DIAGRAM - 2 of 4
CCB=Central Control Board
ICB=Ignition Control Board
ECO=Energy Cut Off
LWCO=Low Water Cut Off
IRI=Industrial Risk Insurance
CPU=Central Processing Unit
CSD1=Control Safety Devices - 1