TX Final Compilation Flashcards
White pvc temp
65
Flame safeguard system on oil furnace is sensitive to what
Light
50% dilution air
150-180F reduction
Yea
Grey pvc
90 Celsius
Residential oil
Crude oil
Number 2
Number 6
Flame safeguard system on Standing pilot natural gas furnace is sensitive to
Heat
Most common regulator built into an RTU heating unit gas valve is the
Servo regulator
Colour of wire not on all blower motors
Yellow
When considering is taking geothermal what should you look for
Contamination in the ground
Btu in a KW
3412
Hydronic system w a compression tank has what for air
Air control system
SPDT do r and w make on a temp rise
No
What plug on tq
5-20r 125V
Section 16 electrical
Class 1 and 2 circuits
Installing a disconnect for any motor
9Metres from motor and in sight
AC disconnect must be
Less than 3M from the unit and within sight
Over current
Breaker fuse
Overload
Heater
Class 2
Class 1
2 residential
1 industrial
Section 16 doesn’t cover communications circuits
True
Does B52 cover residential
NO
B52 provides
Minimum requirements
Cooling towers should have what ph
7
Is dry air better
Yes
Brazing minimum temp
Above 840
Approach is
Leaving water and entering wet bulb
Intermittent pressure relief caused by
Faulty expansion tank
Over 10ft3 vessel needs
Dual pressure relief valve
Delay on break
No short cycling
Sizing condensing unit fur residential
Diverse square feet by 600ft2 per ton
Boyle’s
Temperature
Charles 1
Volume
Charles 2
Pressure
Swamp cooler
Constant enthalpy, swamp cooler
