Term
| Ventilation for a flueless gas hob or cooker is dependant on ? |
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Definition
| The room volume, and openable window or similar |
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Term
| ventilation provision for a flueless water heater is dependant on..? |
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Definition
| The appliance gas consumption and heat input along with the room volume and an openable window or similar |
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Term
You attend a property where there is a small kitchen with openable window and door directly to outside. The room
is 9M3, what size vent is required? |
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Definition
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Term
Purpose provided ventilation for a flueless appliance must communicate directly with the outside air, whether
directly or via a duct. |
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Definition
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Term
In the event that more than one gas appliance is installed in the same room area, the method for calculating this
multi appliance ventillation would be to (BS 5440) |
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Definition
provide ventilation for the appliance/flue category, that is likely to be operating and generating the greatest
demand. |
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Term
What are the flueless ventilation requirements for an 8kW nett over sink Instantaneous water heater installed in
the kitchen measuring 3 metres long, 3 metres wide and 2 metres from floor to ceiling? |
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Definition
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Term
A 7kW (Gross) Natural Gas (G20) flueless space heater permanently fixed in the hallway providing at max setting
up to 70W/M3 Of space heating will require a permanent fixed vent direct to the outside of. |
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Definition
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Term
A flueless gas cooker is found in a room 18m3 which has no direct ventilation to outside The floor area of this
room is 9M2. It has an openable window and door which open into a conservatory with a floor area of 12M2. The
conservatory then opens into the garden. The following is true |
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Definition
A permanent vent of at least 80cm2 from the kitchen to the conservatory and a further 80cm2 vent from the
conservatory to outside is required. (this could be a vent above the openings) The door between the Kitchen and
Conservatory, and then conservatory to outside would each have to provide a free area of over 1.05M2 in their
open position. |
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Term
Under what category of unsafe classification would you place a flueless gas cooker installed in a kitchen 7M3 with
an openable window no openable door to outside and no additional ventilation provision. |
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Definition
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Term
2 x DFE's of rated het input 6.6kw nett are installed in a through lounge diner. Without manufacturer's instructions
the total ventillation requirement will be |
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Definition
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Term
2 x DFE's 6.5 kw nett each are installed in a Through lounge diner, one in the dining area, the other in the lounge.
The manufacturer's instructions state that where the appliance passes its flue flow and spillage test no additional
ventilation will be required. On testing both appliances pass their flue performance tests. How much if any
ventillation will be required |
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Definition
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Term
Apart from DFE?s, an open flued gas appliance ventilation consideration will allow for the first 7kW of rated heat
input of each appliance without a need for additional ventilation except when |
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Definition
The Appliance is installed in a compartment and vented direct to outside
( ) There is more than one open flued appliance in a room area |
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Term
When Calculating the combustion and compartment ventilation requirements of an open flued appliance within a
cupboard which is vented either direct to outside or into a room which has a suitable vent to outside is it
permissible to deduct the first 7kw in terms of adventitious air when calculating the combustion and compartment
ventilation requirements? |
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Definition
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Term
An open flued gas Boiler is installed in the Kitchen with a volume of 18M3. It has a Gross rated Maximum Heat
Input of 16.5kW. What size permanent ventilation provision is required for combustion? |
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Definition
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Term
| What is the purpose of having both High and Low levels vents installed in a compartment |
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Definition
| For Keeping the Compartment or cupboard cool |
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Term
In the case of an open flued appliance why is it so important that all the vents are communicating and taking air
from the same source/room? |
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Definition
| To prevent Cross Ventilation |
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Term
An open
flued appliance of net heat input 12 kW in a room ventilated directly to the outside would require how much
(mm2) permanent ventilation. |
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Definition
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Term
. Where an extraction
fan is sited in the same room as a gas open flued appliance, generally the addition of a further ?????. Cm2
Ventilation would combat this. |
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Definition
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Term
| What effective ventilation area is adventitious air? said to equal in cm2 |
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Definition
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Term
| A kitchen of 12 m3 contains a flueless water heater of 8 kW net..? |
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Definition
| 50 cm2 permanent vent and an openable window are required. |
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Term
| A room of 9 m3 without a door to outside contains a flueless cooker |
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Definition
| A 50 cm2 permanent vent and an openable window are required. |
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Term
| . A flueless water heater of heat input 12 kW net is in a kitchen of 40 m3 |
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Definition
the water heater is over the 11 kW limit for flueless water heaters and is
therefore not permitted. This should be treated as an At Risk situation. |
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Term
| Ventilation of rooms containing more than one appliance? |
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Definition
Where there is more than one open flue or flueless gas appliance in a room, the overall
ventilation requirement is the largest of either:
⋅ the total ventilation requirement of all open flue space heaters, or
⋅ the total ventilation requirement of all flueless space heaters, or
⋅ any other individual ventilation requirement |
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Term
A kitchen of 18 m3 in an un renovated 1990s house contains:
a) a flueless water heater of heat input 8.5 kW net
b) an open flue central heating boiler of heat input 28 kW net
c) an open flue gas fire of heat input 5 kW net |
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Definition
appliance a) requires 50 cm2 and an openable window.
Appliance b) requires 28 x 5 = 140 cm2
Appliance c) requires 5 x 5 = 25 cm2
Appliances b) and c) are both open flue space heaters, so add them: 140 + 25 = 165 cm2
Adventitious air is available: 165 – 35 cm2 = 130 cm2
The largest requirement is for b) + c), so the room requires a 130 cm2 air vent. An openable
window is needed because there is a flueless appliance in the room. |
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Term
A kitchen of 20 m3 in an un renovated 1950s house contains:
a) a flueless cooker
b) an open flue boiler of heat input 26 kW net
c) a flueless water heater of heat input 10 kW net
d) an open flue gas fire of heat input 6 kW net |
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Definition
a) does not require purpose-provided ventilation but it does
require an openable window.
Appliance b) requires 26 x 5 = 130 cm2
appliance c) requires 50 cm2 and an openable window.
Appliance d) requires 6 x 5 = 30 cm2
Appliances b) and d) are both open flue space heaters, so add them: 130 + 30 = 160 cm2
Adventitious air is available, so 160 – 35 = 125 cm2
The largest requirement is for b) + d), so the room needs a 125 cm2 air vent. An openable
window is needed because there are flueless appliances in the room. |
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Term
| Ventilation of rooms containing more than one appliance.... |
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Definition
the overall
ventilation requirement is the largest of either:
⋅ the total ventilation requirement of all open flue space heaters, or
⋅ the total ventilation requirement of all flueless space heaters, or
⋅ any other individual ventilation requirement |
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