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Plumbing 4th Year 2021 BC CANADA > Line 0 > Flashcards

Flashcards in Line 0 Deck (11)
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1

Which meter has a very high internal resistance

Voltmeter

2

If the leads of the ohm meter are connected across the contacts of a relay coil, the meter should read?

The resistance of the coil

3

Tested under load in the safety circuit the thermocouple should be replaced if the millivoltage drops below

8-10mv

4

If a pilotstat fails to produce sufficient magnetic field to hold the safety open with the 2-5 millivolts of applied voltage , we consider the coil

Providing normal operation

5

when using a power pile to power thermostat cunductor it must be located withen

under 60 ft

6

when responding to a no heat call

check for gas pressure and power at appliance not panel

7

to reset a furnace with remost reset ignition module that has gone into lockout by?

turn off thermostat for 30 seconds

8

120 volts across supposedly closed relay coil means

relay coil bad, open circuit

9

on a call for heat the spark egniter is energized and the pilot will stay lit for 30 seconds before the ignition module locks out

main gas valve is faulty

10

on call for service furnace runs for 3 minutes and shuts down, several minutes later repeats

Hitting high LIMIT!
Circulating blower is faulty not circulating air

11

responding to call for no heat
turbo blower is operating and pilot is lit but no burner is lit

main gas valve faulty