34000 Autry Street, Livonia, MI 48150 | 800.968.5530 | Fax 734.419.0209 | www.hamiltonengineering.com | LIT91127US REV 5/2018
Page 65
UNIVERSAL WIRING DIAGRAM
03/23/09
34000 Autry St.
Livonia, MI 48150
PH: (800) 968-5530
Fax: (734) 419-0209
Description:
Dwg. By:
Date:
Scale:
Customer:
HAMILTON
ENGINEERING
Dwg.
No.:
Checked.
By:
NTS
K0
K1
K2
K3
K4
=white
=yellow
=brown
=green
=grey
=orange
=blue
=red
=black
=purple
K5
K6
K7
K8
K9
K10 =yellow/green
+
-
SETPOINT
TEMPERATURE
BURNER ON
RESET
SERVICE
X 3
2
1
3
4
5
6
28
26
23
25
22
L1
L1
Sensor
Indirect
Sensor
Outdoor
Divertor Valve Indirect
L1
Power Supply
Gas Valve-1
X 1
X 2
X 4
X5
X 8
X 9
X 10
Fuse 3.15A
Transformer
1
2
3
4
5
6
fan
2
3
4
5
6
1
1
3
2
6
5
4
1
3
2
6
5
4
7
8
9
10
2
3
4
5
6
7
8
9
1 10
11
12
13
14
15
16
17
18
Gas Valve-2
9
1
8
7
6
5
4
3
2
18
17
16
15
14
13
12
11
10
19
20
fan-1
fan-2
AMP universal
MALE N LOK 350766-1
S1
S2
Main
ST-4
ST-2
ST-6
ST-7
K6
K3
K5
K6
K2
K6
K2
Sensor
or
Aquastat
Pump 2-indirect
OPEN THERM PCB
BURNER
L1
24
ST-3
8
7
Thermostat
Remote
Additional
Heat
Source
Dry
Contact
Dry
Contact
Signal
Lock Out
External
L2
K2
Pressure
switch
Open switch
indicates as H-1
High limit
thermostat
Open switch
indicatesas H-1
12
11
10
9
+ -
Cascade
Connection
ST-1
19
17
16
15
13 14
Pump 3
L2
Bridge
+ -
0-10
VDC
20 21
1
2
1 2
M
ol
ex
2121
L2
Pump 1
208-240 Vac
18
27
X7
1 2
5
4
3
X6
operatin
g
fault
Pump-2/close
Pump-1
open
Pump-2/comm.
K6
Pump-3
Pump-3
Pump-1
L1
L2
K2
K2
K6
K1
0
K2
K6
K1
0
switch
Gasvalve
Gasvalve
K2
K6
K2
K2
supply L2
supply L1
K2
K6
K1
0
K1
0
K1
0
K1
0
K10
K10
K10
1A
2A
2
1
open
close
com.
L1
L2
K0
K9
2
1
Cascade PCB
1
2
Thermostat X1/9-18
or OpenTherm PCB X3
M
ol
ex
2020
M
ol
ex
2020
ST-5
K1
0
K2
K6
K2
K1
K1
flow sensor
K5
K3
return sensor
K2
K2
K2
K2
K2
K9
K9
power supply
fan
pwm/hall
signal
K4
K8
K7
K7
K4
K8
K7
K7
K1
K9
K9
K8
not
in
use
K8
K8
K7
K7
K7
K8
K0
K7
1
2
Molex2020
1
2
Molex2020
+
-
K2
K1
0
K1
K3
K1
Universal Wiring Diagram
HW 79 - 599
LowWater Cut Off
K2
Water Flow switch
Open switch
indicates as H-1
Additional Safety Devices
Rear wall
high limit
thermostat
Burner door
high limit
thermostat
C/F = Consult Factory