Ventilation for gas fitting.

Ventilation for gas fitting.

by Ice

​Ventilation

​In gas fitting ventilation is a big deal and is quite often over looked, so in this following quiz lesson we will be going over some of the key aspects of ventilation.

​To the right is our ventilation triangle, using this we can find out if the room needs extra ventilation, If extra ventilation is needed it is covered on the upcoming slides.

​Ventilation

• ​As you can see from the attached media there are different requirements for different gas appliances, such as flueless heaters and natural draught water heaters. We have to be carefull not to put appliances in locations where they can not go.

​Ventilation

• ​As you can see from the snippet to the right certain places cant have flueless gas appliances in.

• ​These locations also can not be used to get free air from (ventilation).

Self Check #1​

Please complete​

Multiple Select

When working out if ventilation is required what factors do we need?

• MJ rating of the appliance.

• what appliance are we installing.

• Room size.

• Allowable MJ allowance for the appliance.

Multiple Select

Where can you not install a flueless appliance?

• Bedroom

• WC / Bathroom

• Sauna / Spa room

• Kitchen

Multiple Choice

We are now going to find out if the room is big enough for the flueless heater.

The  room size is 3mx3mx2.4m.

The MJ rating for the thermostatically controlled heater is 15 MJ/H.

Is the room big enough?

• Yes

• No

Multiple Choice

What is the MJ allowance per cubic meter for a flueless gas heater without a thermostat?

• 1.2 MJ

• 3 MJ

• 0.4 MJ

• 0.2 MJ

Multiple Choice

If ventilation is required how do we find out what size the vent will be?

• Clause 6.4.4.2

• Clause 6.4.4.1

• Clause 6.4.4.4

• Clause 6.4.4.10

Multiple Choice

You have done your ventilation calculation and found out the room is to small, so Ventilation is needed.

Your MJ rating for the appliances is 15 MJ and you can get ventilation from outside how big will the vent be?

• 4,500mm

• 33,000mm

• 360mm

• 1500mm

Multiple Choice

As per the previous slide ventilation was needed, How many vents are required?

• 1

• 4

• 2

• 3

Multiple Choice

As per the previous slides the appliance was a gas hot water cylinder, where would the vent/vents need to be installed?

• Near the appliance.

• In the ceiling and in the floor.

• At the burner and at the down draught diverter.

• Within 5% of the top of the room and within 5% of the bottom of the room.

Multiple Choice

If the appliance was a flueless heater where would the vent/vents need to be?

• As close as possible.

• Within 5% to the top of the room and within 5% of the bottom of the room.

• Does not need any.

• At the burner on the heater.

Multiple Select

The vents for the previous heater have to come from another room which is a suitable room to get ventilation from?

• A kitchen.

• A lounge.

• A bedroom.

• A bathroom.