15
Warm air distribution
• Warm air is supplied to the RV’s interior via
flexible warm air ducts.
• The furnace will function properly only if the
warm air ducts are installed properly.
• Duct static pressure:
Minimum 0.00 in. wc (0.00 mbar)
Maximum 0.65 in. wc (1.62 mbar)
Parts for warm air distribution
Various parts are available to ensure proper
supply of heated air from the furnace (see
Appendix B).
AD 65
Warm air duct
VD-Combi
Blank cover for Combi
EN
Closable end outlet
with air throttle
Warm air outlets
U
U
L
L
Fig. 17
U Upper warm air outlets
L Lower warm air outlets
The four warm air outlets on the Combi furnace
are designed for the warm air duct with 2.56 in.
(65 mm) outer diameter (Duct
AD 65)
Maximum one of the two lower warm air outlets
(Fig. 17 – L) may be closed with a
VD-Combi
blank cover.
We recommend equipping all 4 warm air
outlets with warm air ducts for ideal distri-
bution of warm air in the RV.
• Force the blank cover into the warm air out-
let until you hear it click and it fits tightly.
Make sure that it is a tight fit.
• Each of the warm air ducts must have at
least one end outlet.
Permissible warm air ducts
Fire hazard due to unsuitable warm air
ducts, unsuitable or missing insulating
sleeves, or incorrect installation!
• Always
use
AD 65
or
AD 35
warm air
ducts supplied by Truma.
• Always make sure that the warm air ducts
are inserted all the way and check for a
tight seat.
• Insulate
all
warm air ducts over their full
length. Use 3 in. insulating sleeves sup-
plied by Truma.
Risk of injuries from sharp edges!
• Always wear protective gloves and eye-
wear during installation and maintenance
work.
