APEN GROUP SPA reserves the right to make changes deemed to be required to its products or documentation
AH-New
condensing air handling unit
4
code HG0310.05GB ed.A-2010
AH
5
code HG0310.05GB ed.A-2010
AH
HG0030.00_IM 001
2.3.
Power supply
The unit must be correctly connected to an effective earthing
system, fitted in compliance with current legislation.
Cautions:
•
Check the efficiency of the earthing system and, if required,
call out a qualified engineer.
•
Check that the mains power supply is the same as the
power input stated on the equipment nameplate and in
this manual.
•
Do not reverse live and neutral; the unit can be connected
to the mains power supply with a plug-socket only if the
latter does not allow live and neutral to be swapped.
•
The electrical system and, more specifically, the cable
section, must be suitable for the equipment maximum
power input, shown on the nameplate and in this manual.
•
Do not pull electric cables and keep them away from heat
sources.
NOTE: It is compulsory to install, upstream of the
power cable, a switch with a protection (fuses or
automatic), as required by existing regulations.
The switch must be visible, accessible and placed
at a distance lower than 3 metres from the control
compartment; any electrical operation (installation
and maintenance) must be performed by qualified
staff.
2.4.
Use
Do not allow children or inexperienced people to use any
electrically powered equipment.
T
he following instructions must be followed:
•
do not touch the equipment with wet or damp parts of your
body and/or with bare feet;
•
do not leave the equipment exposed to the elements (rain,
sun etc...) unless it is adequately protected;
•
do not use the gas pipes to earth electrical equipment;
•
do not wet the unit with water or other fluids;
•
do not place any object over the equipment;
•
do not touch the moving parts of the unit.
Avoid contact with hot unit surfaces. Such surfaces, generally
located near the flame, overheat during operation and remain
hot for some time after the burner has stopped.
If the equipment is not to be used for a certain period of time,
open the main electrical switch of the thermal station and close
the manual valve on the duct which brings the
fuel to the burner.
If, instead, the equipment is not to be used any more, perform
the following operations:
•
a qualified person shall disconnect the power supply cable
from the main switch;
•
close the manual valve on the duct supplying fuel to the
burner by removing or locking the control handwheel.
2.5.
Air Vents
The room where gas fired heater will be installed must be
provided with one or more air vents.
These air vents must be fitted:
•
to the ceiling for gases with density lower than 0.8;
•
flush to the floor for gases with density higher or equal to 0.8.
The air vents must be fitted to walls facing the open air. The
sections must be sized according to the heat output installed.
In case of doubt, measure the CO
2
with the burner working at
maximum output rate and the room ventilated only through the
air vents for the burner and then measure again with the door
closed. C0
2
value must be the same under both conditions. If
in the same room there are several burners or aspirators that
can work together, measure with all the equipment working at
the same time.
Do not obstruct the room air vents, the burner fan intake opening,
any air ductwork and intake or dissipation grilles, avoiding in
this way:
•
stagnation in the room of any toxic and/or explosive mixture;
•
smouldering combustion: dangerous, expensive, pollutant.
The unit, if not built for outdoor installation, shall be sheltered
from rain, snow, and frost. If air is pulled from outdoor, the
intake must be protected by a rain deflector or similar device
that prevents water from penetrating into the machine.
The room where the unit-burner group is installed must be clean
and deprived of volatile substances that can be drawn by the
fan and obstruct burner inner hoses or combustion head. Dust
itself can be a problem if it is left depositing on fan blades, thus
reducing fan flow rate and making combustion polluting.
DO NOT COVER IT WITH YOUR HAND OR OTHER
OBJECTS!
