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| 4.
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Can
I install an Open-Flued (Fanned Draught) water heater? |
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| Ans: |
It is now an offence
to install this type of gas water heater in a bathroom, except
for replacement of another open-flued (fanned draught) water
heater which was installed in a bathroom before 1st January
1994. |
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| 5.
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Is
it safe to use flueless (sink) gas water heaters for the kitchen? |
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| Ans: |
It is generally safe
to use properly maintained flueless (sink) gas water heater
for the kitchen provided that it is not used more than 5 minutes
continuously and sufficient ventilation within the premises
is provided. However, if the heater is operated under the following
conditions : |
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prolonged use; insufficient ventilation; heater
blocked, defective or inadequately maintained.
It is dangerous that toxic carbon monoxide may be built up
within the kitchen. The Ordinance specifies that this type
of water heater must provide a warning label: "Do
not use for more than 5 minutes continuously"
Some new models of flueless (sink) gas water heater have
incorporated oxygen deficiency device. If oxygen level is
below the average, it will cut off the gas supply. However,
users should choose room-sealed sink gas water heater in order
to minimise the opportunity for producing carbon monoxide.
It is an offence to connect a flueless (sink) gas water heater
for supplying hot water for bath or shower purposes.
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| 6.
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Why
should I choose cooking appliances with FFD? |
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| Ans: |
Each year,
many incidents of gas escape are caused by accidental extinguishment
of cooking flames by sudden draughts or over-boiling of liquids.
A flame failure device (FFD) is a protective device incorporated
into a hotplate, oven or other burner, |
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which reacts by shutting
off the gas supply when flame presence is no longer detected.
It also helps prevent a cooking appliance from being switched
on accidentally by a child or others. |
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