Plumber Peroid Two gasfitting Flashcards
A open circuit thermocouple will produce?
Between 17-32mv (millavolt)
A good thermocouple will hold a force of drop-out spring at?
3-5psi force
On the thermocouple the welded part is referred to as ?
Hot junction
On a thermocouple the brazen part at the bottom of the welded part is known as the?
Cold junction
A closed circuit thermocouple will produce?
6-17mv dc
Drop out range?
.75-6mv dc
Low voltage =
30 volts and under
High voltage =
30volts higher
Ultra low voltage =
1 volt and lower
Flame failure response time is ? Don’t injunction with drop test
1-3 minutes
Safe shut off valve?
Pilot connector is before the safety control valve
100% shut off
Pilot connection is after the safety on the control valve
Thermopile open circuit no load has a power of
750mv
Thermopile open circuit no load has a power of
750mv
