TABLE 5—MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRES WHEN USING Q340A
THERMOCOUPLE.
Thermocouple
Maximum Leadwire Length x 2 (Wires)
Length
AWG No. 14
AWG No. 16
AWG No. 18
Inches
Meters
Inches
Meters
Inches
Meters
Inches
Meters
18
0.5
35
0.9
22
0.6
13
0.3
24
0.6
29
0.7
18
0.5
11
0.3
30
0.8
23
0.6
15
0.4
9
0.2
36
0.9
17
0.4
11
0.3
6
0.2
48
1.2
Do not use.
60
1.5
TABLE 6—MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRES WHEN USING Q309A
THERMOCOUPLE.
Thermocouple
Maximum Leadwire Length x 2 (Wires)
Length
AWG No. 14
AWG No. 16
AWG No. 18
Inches
Meters
Inches
Meters
Inches
Meters
Inches
Meters
12
0.3
47
1.2
30
0.8
18
0.5
18
0.5
41
1.0
26
0.7
16
0.4
24
0.6
35
0.9
22
0.6
14
0.4
30
0.8
29
0.8
18
0.5
11
0.3
36
0.9
23
0.6
15
0.4
9
0.2
40
1.0
19
0.5
12
0.3
7
0.2
48
1.2
11
0.3
7
0.2
60
1.5
Do not use.
Fig. 7—Installing thermocouple to the power unit.
Fig. 8—Wiring connections for 120 volt control.
5
69-0683—1
120V
THERMOSTAT
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
DO NOT JUMPER THESE TERMINALS. THIS
SHORTS VALVE COIL AND MAY BURN OUT
ANTICIPATOR IN THERMOSTAT.
OPTIONAL HIGH LIMIT.
L1
(HOT)
L2
1
HIGH LIMIT
CONTROLLER
M3092A
GAS CONTROL TERMINALS
L2
L1
2
3
1
2
3
1
THERMOCOUPLE
LEAD
1
THIS IS AN ELECTRICAL CONECTION AND MUST BE CLEAN
AND DRY. DO NOT USE PIPE COMPOUND.
M3096