2. Gas water heater. Flashcards
- What 1 st-hr rating require WH for 3 bedroom, 2 bathroom house?
67 gal.
- Would an instantaneous domestic hot water heater be used where the demand is intermittent or constant? Would a storage tank be used with the instantaneous heater?
An instantaneous domestic hot water heater be used where the demand tends to be constant. In such a case, there is no need for the use of a storage tank.
- Use of Watts 210 gas shut off?
There is not possible to arrange for a gravity drain of the TPRv in a basement or below grade.
- How does Watt 210 gas shut off work?
The temp-sensing bulb of the valve goes in the upper portion of the tank, and the gas piping runs through the valve. The Watts 210 shuts off the gas if the temperature is excessive. In addition, a separate water-pressure-relief valve must be installed.
- What does 210 mean in Watts 210 gas shut off?
210*F.
- Material for TPRV drain pipe?
Same as allowed for water distribution.
- Requirements for length and change of direction TPRV drain pipe?
Max 4 of 90* elbows and max length 30 feet.
- Where does WH required pan and drain?
Watertight corrosion-resistant pan required for WHs in attics or where leakage could cause damage.
- Can TPRV discharge into WH pan?
- By IRC not.l
2. By UPC yes.
- What is FVIR WH?
Flammable vapor ignition resistant water heater.
- How does FVIR WH receive combustion air?
Air enter through the vents opening on the battom side and passes through the flame-arrestor plate into the sealed combustion chamber.
- How does arrestor plate of FVIR WH is tested?
For near storage of gasoline, lint, dust and oil.
- How shall You join2 flue connectors?
The apliens with lower rating shall join above the one with the higher rating.
- What is chimney connector?
A pipe connecting a fuel burning aplience to a chimney flue.
