Nortek Reznor FSE 100, Installation, Commissioning, Servicing

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PAGE 18 Reznor, FSE, Installation Manual, EN 2020-02, D301160 Iss H
IN
Figure 8b Air supply and return
Accessories
Any accessories must be suitable for
installation, follow the respective
instructions provided.
Principle of operation
The operating principle is described below:
• When the two-stage thermostat detects
a temperature much lower than the
set value, it commands the burner to
turn on at the maximum heat input
previously set.
• Approx. 1 minute after the flame has
been ignited, and the ventilation unit
starts, it will release warm air into the
room.
• When the thermostat detects that
the set temperature has almost been
reached, it switches to low fire
• When the thermostat detects that the
second pre-set temperature level has
also been reached, it signals the to turn-
off the burner.
• After 3–4 minutes, (when the heat
exchanger has completely cooled) the
ventilation unit will also switch off.
• The entire cycle is repeated
automatically according to the required
temperature setting for the room.
Fuel connection
The heater should be connected to the
fuel supply by a qualified engineer only,
complying with the relevant regulations.
As far as gas burners are concerned,
we suggest placing a leak detector near
them, which will operate an electro valve
that will stop the gas supply in case of
any accidental leakage. The gas supply
line should be installed by a qualified
person, in compliance with all the relevant
Laws, Regulations and Rules. Refer to the
designer of the system
Flue gas discharge
Flue gas exhaust connection
position and example of
connection to the flue:
• Condensate discharge fitting is
necessary to prevent any condensate
that has formed in the flue to flow
inside the heat exchanger.
• The vent pipe and the flue connector
must be in compliance with the
Regulations and Laws in force. They
must consist of metal and rigid pipes,
capable of resisting the mechanical,
thermal and chemical stress caused by
the combustion.
• It is mandatory that all components of
the flue are certified.
• To avoid reflux of condensation from
the flue to the air heater, there must be
a condensation discharge at the lowest
point of the flue.See Figure 9