0307SCA0AMEN
12/26
Air heaters suspended by flexible suspension materials or drop
rods must be connected to the gas supply using an approved
flexible connector. Sufficient slack must be provided in the
connection to allow for movement of the appliance. Use a
flexible connector of suitable size to reduce the pressure drop
and the possibility of gas flow noise.
CAUTION: Do not use the appliance gas supply to balance or
support any part of the appliance.
Figure 6
Legend :
¬
gas tube inlet sealing ring
-
inlet gas tube
®
union fitting
¯
gas service tap
°
gas tube
4.5 Electrical connections
The electrical installation may only be carried out by
appropriately qualified persons observing the rules in force.
All electrical connections should be made in the heater control
compartment (refer to figure 9). Screw type terminals are
provided. Connections should be in accordance with the
terminal markings and the wiring diagram affixed to the air
heater or included with this document.
DANGER: THIS APPLIANCE MUST BE EAR
THED
The minimum external controls required for the air heater are a
room thermostat.
It is essential the main input line and
neutral to terminals L and N remains live at all times even
when the appliance is switch off this is to ensure correct
operation of the unit.
An indicator light and burner reset button are fitted inside the
appliance. To add a remote reset button, make connections to
the terminals in the electric box as indicated on the wiring
diagram.
IMPORTANT: If the reset button requires activating for
any reason the cause should be identified before resetting.
After resetting stay with the appliance for long enough to
ensure that lock-out does not reoccur (suggest 5 minutes).
Fix all electric cables and installer’s wiring to the gas pipe
and ensure they do not touch the combustion collector box.
4.6 Room thermostat location
Do not attempt to control more than 1 air heater from a
room thermostat or control panel unless a properly wired
relay is fitted. Follow instructions supplied with such
panels.
The location of the room thermostat is important. It should not
be fitted on an outside wall. Avoid location in draughty areas or
where it may be influenced by heat sources e.g the sun, process
plant, etc. The thermostat or temperature sensor should be
mounted on a vibration free surface and mounted about 1,5
meters above floor level. Follow the thermostat manufacturers
fitting instructions. The thermostat must be suitable for
switching 230 volts
.
5.0 AIR DISTRIBUTION
AmbiRad SCA air heaters are fitted with adjustable horizontal
louvres over the range 10 - 55 degrees from the horizontal so as
to be able to direct the airflow downwards.
DO NOT ADJUST THE LOUVRES BEYOND THEIR
STOPS
.
O
PTIONAL
:
1)Adjustable vertical louvers can be fitted on the
appliance to be able to direct the airflow to the
right or to the left side (option n° 207.1)
2)The vertical/horizontal louvers can be equipped
with 30° downturn nozzles or 60° downturn
nozzles (qty 2) (option n° 203).