Unit installation

User, Installation and Service Manual for F1 Gas Unit Heaters 9
Ed. 05/2009
NOTE
The electrical safety of the unit is attained only when the unit itself is correctly connected and
efficiently grounded according to the existing safety standards. Do not use gas tubes to earth
electrical apparatus.
G. The unit should be connected to the electric supply line by means of an omnipolar switch with a
minimum contact opening of 3 mm. An omnipolar switch is a '’Double pole isolating switch’’, i.e.
a switch capable of disconnecting both on phase and neutral. This means that when the switch
is opened, both contacts are disconnected.
H. It is mandatory to install a room thermostat connected to the unit according to the installation
wiring diagram (figure 19). It is recommended to place the sensor at about 1.5 m from the floor,
protected against air draughts, direct exposure to sun rays and direct heat sources (lamps, hot
air flows from the unit itself, etc.). If possible, DO NOT place the thermostat on walls
bordering the outside, to avoid false temperature readings and therefore system operation. IF
THE ROOM THERMOSTAT IS PROPERLY INSTALLED, UNWANTED STARTING AND
STOPPING OF THE SYSTEM WILL BE AVOIDED AND ADEQUATE ROOM COMFORT
WILL BE ENSURED. As an alternative to the room thermostat it’s possible to install the
programmable remote control which could be supplied on request as an optional accessory.
I. To obtain the maximum system efficiency it is advisable to comply with the following rules:
- Install units as close as possible to the work area, taking care that the air flow does not come
directly into the contact with people.
- Take obstacles into consideration (columns, etc.)
- For better heat distribution in the case of multiple unit installation, create alternate flows of hot
air (see figure 4).
- In some cases it may be suitable to place the units close to the main doors, so they can
operate as an air barrier when doors are opened.
2,5 - 3,5 m
min 0,4 m
0,35
min
0,2m
A
A
A= Lunghezza
del generatore
Figure 3
CLEARANCES TO BE RESPECTED
A= LENGTH OF
THE UNIT
min 0,4 m
2,5
–
3,5 m
min
0,2 m A A