S+H Nolting NG-100, Operating Instructions Manual

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2. GENERAL
Gas-fired warm air heater (WAH) for commercial
and industrial applications. The
NG-15 series as semi-automatic unit with piezo-
ignition and thermoelectrical flame control or the
NG-35 to NG-100 as a fully-automatic device with
electrical ignition and ionization monitoring.
3. SAFETY FEATURES
3.1 NG-15 Safety Features
The WAH is equipped with a safety temperature
controller (Item 3) as a safety feature to prevent
overheating.
The thermo-switch shuts down the WAH upon
exceeding the defined temperature.
After cool-down of the WAH the cause must first
be eliminated and the WAH must then be
restarted manually (see “Initial operation and
further start-ups”, page 15).
The WAH is equipped with a thermoelectric flame
failure control for flame monitoring (Item 5).
When the flame extinguishes, gas supply is
immediately interrupted.
3.2 NG-35 - NG-100 Safety Features
The WAH is equipped with a safety temperature
controller (STC) as a safety feature to prevent
overheating. (Item 15 )
The STC shuts down the WAH upon exceeding
the defined temperature.
The integrated restart lock prevents restarting of
the device.
After cooling the WAH, the cause must be
eliminated and the STC must be manually
released. The reset button is located on the
control box under the black screw cap (Item 24).
Then press the release button for the automatic
gas-firing device on the front panel of the
switching box (Item 16).
The built-in ionization electrode serves as a flame-
monitoring device and is connected to the
automatic gas-firing unit that controls and
monitors the overall function of the WAH.
4. INSTALLATION/ ASSEMBLY
In order to prevent personal injury and
property damage, the relevant local building,
fire-prevention and professional
organizational regulations must be
unconditionally observed.
Before setting up it must be ensured that the
local supply conditions (gas type, pressure)
and the current setting of the WAH
correspond.
The WAH may be operated only in well-ventilated
spaces and must
not be used in residential or
similar premises.
To comply with the MAC limit values at the set-up
location, for each KW of device output a fresh air
exchange rate of at least 25 m
3
/h must be
ensured.
Operation in environments at risk of fire or
explosion is
prohibited .
The WAH is set up freely in the room on a level
surface without a chimney connection.
The distance from combustible parts must be at
least 1.5 m ,, on the outlet side of the device at
least 3 m.
Any attachment of pipes, hoses or the like as well
as changes to the cross-section is
prohibited on
the inlet and outlet side.
Caution!!!
WAH electrical and gas hookups must be
done only by a specialist and in accordance
with local standards.
Electrical Connection
The electrical connection is made using a built-in
power cable with three-wire grounded plug to a
230 V / 50 Hz a.c. power line.
Gas Hook-up
3/8" external thread with inner cone (note left-
hand thread) on the device.
The WAH can be equipped with a 3.0 m long gas
hose, hose break protection and a corresponding
pressure regulator with combination bottle
connection thread as accessories. The connection
to the gas lines must be made using appropriate
connectors (note left-hand thread).