Table of Contents
Trademark information ........................................................ 2
Intended use .......................................................................... 2
Prohibited use ........................................................................ 2
Mounting arrangement / Accessories ................................ 3
Furnace diagram .................................................................... 4
Consumer Safety Information
Safety symbols and signal words ...................................... 6
Safety behavior and practices ............................................. 6
Safety features ...................................................................... 8
Operating Instructions
How the Combi furnace works ........................................... 8
Selectable modes of operation ................................................. 9
Selectable modes of power input ............................................. 9
Switch for gas shut-off valve ............................................ 10
Room temperature sensor ................................................. 10
Truma pressure relief/drain valve ..................................... 10
Opening the Truma pressure relief/drain valve ....................... 11
Closing the Truma pressure relief/drain valve ........................ 11
Starting the Combi furnace ............................................... 11
Inspections before each use .................................................. 11
Filling the water container ...................................................... 12
Switching on the furnace ....................................................... 12
Shutdown ............................................................................. 13
Switching off the furnace ....................................................... 13
Draining the water container .................................................. 13
Winterizing ........................................................................... 14
Optional: Winterizing the RV with a winterizing fluid ............. 14
Winter operation ................................................................. 14
Combi Technical Data ........................................................ 15
" Combi" MANUFACTURER'S LIMITED WARRANTY .... 16
Maintenance and service ................................................... 17
Decalcifying and cleaning the water container ...................... 17
Truma pressure relief/drain valve ........................................... 18
Replacing the 12-volt fuse ...................................................... 18
Troubleshooting .................................................................. 19
Appendix ............................................................................... 20
2
California Proposition 65 lists chemical sub-
stances known to the state to cause cancer,
birth defects, death, serious illness or other re-
productive harm. This product may contain such
substances, be their origin from fuel combus-
tion (gas) or components of the product itself.
Trademark information
Truma Combi referred to as Combi below.
Truma CP plus reffered to as CP plus below.
Intended use
The Combi LP gas furnace* with supplemen-
tary indirect water heating may be used only in
recreational vehicles (RVs) for heating the room
and the faucet water.
Recreational vehicles (RVs) are designed as
temporary living quarters for recreation, travel
and/or camping. RVs have their own power or
are towed by another vehicle.
*Models
• Combi eco
• Combi eco plus
• Combi comfort
• Combi comfort plus
The Combi eco plus and Combi comfort plus
furnaces also feature electrical heating elements
for a supply voltage of 120 V.
Prohibited use
Any use other than the intended use (see above)
is prohibited.
Examples of prohibited use:
• Use in a marine environment.
• Use as part of a space heating system.
• Use in mobile homes.
• Use in food trucks or roadside food vending
vehicles.
• Use in construction trailers.