Unit installation

User, Installation and Service Manual for F1 Gas Unit Heaters 11
Ed. 05/2009
Note: When horizontal pipes with lengths above 1 metre are installed, the flue pipe must be
mounted with a slope of 2 to 3 cm each 1 metre length (see fig. 5), to prevent entering the
condense drops into the unit. In addition, to install correctly the flue exhaust and the air intake
terminals, follow the details given in figure 8.
SLOPE
2-3 CM PER METER
Figure 5
SLOPE OF THE HORIZONTAL FLUE PIPE
Note:
When vertical pipes with length above 3 metres are installed, to prevent that condense drops
enter the unit, on base of the vertically mounted flue pipe a T-shaped piece MUST be fitted,
in order to collect the condense.
Figure 6 Figure 7
INSTALLATION TYPE B23 WITH WALL TERMINAL INSTALLATION TYPE B23 WITH ROOF TERMINAL
FLUE
AIR
TOP VIEW
SIDE VIEW