Flue Down Draught Safety Device - State Water Heaters PRV 30 NORS G Installation And User Instructions Manual

All flue materials should be corrosion
resistant i.e. stainless steel or
galvanised and must include a tested
and approved terminal to BS 5440 part I.
If the flue passes through any
combustible material measures must be
taken to protect against the possibility of
fire.
All flues must terminate in free air space
approx. 1.5 metres from any vertical
surface of structure i.e. chimney
stacks, roof parapets, etc. If an existing
chimney or flue is to be used this should
be swept clean and be free of debris
before an approved liner is installed and
connected to the water heater.
2.1.5 Flue down draught safety
device
The draught diverter has already been
provided with a temperature probe ex
factory for signalling returning flue
gases. The probe of the down draught
supervision must remain installed on
the draught hood.
Connect the slide connectors of the
down draught supervision to the
thermocouple (see Figure 5) and install
the head of the down draught
supervision in the bracket; see Figure
5. The draught hood must be positioned
in its normal place with the temperature
probe at the front of the boiler. Pass
the wiring of the temperature probe
through the cable duct.
Note
The screws with which the down
draught supervision has been mounted
in the bracket are already in the
bracket.
Important
The capillary tube of the draught
diverter should not show any sharp
buckles or kinks as this may result in
damage and subsequent failure of the
water heater
The T.R.S. should never be put out
of operation. The reentry of flue
gasses may cause poisoning.
Figure 5 - Down draught supervision
installation
IMD 0422
IMD 0422
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