
Ventilation for gas fitting.
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6 Slides • 10 Questions
1
Ventilation for gas fitting.
by Ice
2
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.
3
4
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.
5
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).
6
Self Check #1
Please complete
7
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.
8
Multiple Select
Where can you not install a flueless appliance?
Bedroom
WC / Bathroom
Sauna / Spa room
Kitchen
9
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
10
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
11
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
12
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
13
Multiple Choice
As per the previous slide ventilation was needed, How many vents are required?
1
4
2
3
14
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.
15
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.
16
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.
Ventilation for gas fitting.
by Ice
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