Gas Furnaces
What components electric heaters energized
Sequencers , contactor , and relays
If voltage is read across a fuse and it reads zero what does that mean.
The fuse is good
Which thermostat reverts back to original settings when there is a lost of power to it
624 and 724
In what state is the refrigerant entering in the indoor coil during heating mode
Hot gas
What is the amp draw for a 10 kw heater at 208 volts.
48 amps
What type of metering device does a 4twr7036 condenser have
EEV
Removes the flue gas from the heat exchanger chamber.
Draft motor / inducer
What wires get energized in heat mode for a 2 stage Trane heat pump
Y1 , Y2 , and G
On a 15 kw trane heat kit (240) , how many amps does only w1 pull if staged properly
40 amps , only 10kw is used when w1 is energized
A abnormally low suction pressure in the heat pump mode of operation could indicate _________
Dirty outdoor coil , restriction , fan motor not operating as should , etc.
What is the difference between a Gam air handler and Tam air handler? What is the same thing they share
They are both plastic cabinets but only the Tam units were designed to do communicating
This component shuts the furnace off in the event of over-heating
High Temperature limit
When is the reversing valve energized
Depends of the manufacturer
O typically energizes in cooling
B typically energizes in heating
Trane’s patented air cleaner, designed to remove up to 99.98% of allergens.
Clean Effects
How many heat exchangers does a 90 percent furance have
2
Because heat pumps circulate less refrigerant at low temperatures, this component stores excess refrigerant.
Suction Accumulator
When is an electric heater referenced as a emergency heater
When the heat pump has failed or in defrost mode
60 psig 270 psig
sh - 7 sc- 6
vsat 23
lsat 89
outdoor temp 68
low airflow
What is the warranty on our Supreme 20 seer unit compressors
12 year warranty