Service manual

5
2:0 ABOUT THE COMPACT 3000
2:1 TECHNICAL DATA
The set-up of the boiler
The boiler consists of three eccentrically-tted pipes. The
innermost pipe is a heat exchanger made from extruded
aluminium. This is surrounded by a water jacket containing
a 40% glycol mixture which is the uid for the heating
system. The fresh-water heater is located outside the water
jacket. The two outer pipes, as well as their ends and
connections, are made from stainless steel.
The heat exchanger is divided into two semi-circular parts
by a u-shaped bafe plate. The burner is located in the
upper semi-circle, the combustion chamber. The bafe
plate leads the ue gases back into the lower part of the
section, which constitutes the convection part.
The burner unit is tted on the end of the heat exchanger.
It consists of a combustion fan, burner, solenoid valve with
built-in relief valve and intake/exhaust connections. The
exhaust gases escape through the inner tube, and fresh air
enters through the outer tube. The exhaust fumes exit the
vehicle via a hose and ue tted either to the roof or to the
wall. Fresh air enters via the same ue (balanced draft).
2 or 3 electrical heating cartridges are tted to the upper
part of the water jacket.
The output of the cartridges
is either 2x1 kW or 3x1 kW
(alt. 2+1 kW), depending
on boiler model.
How the boiler works.
When the room thermostat calls for heat, i.e. the
temperature in the vehicle is lower than the set room
temperature, the circulation pump starts. The liquid in
the heating system then starts circulating, and cold liquid
enters the boiler. The boiler’s operating thermostat senses
that the temperature of the liquid is too low. A signal
is sent to switch on the fan. When the pressure in the
pressure switch is sufciently high, a signal is sent to the
electronics box to generate an ignition spark and to open
the solenoid valves to allow gas to enter the system. Once
the temperature in the vehicle has reached the temperature
set on the room thermostat, the circulation pump stops. The
operating thermostat senses that the liquid has reached the
right temperature and the boiler is switched off. When the
temperature of the liquid has fallen a few degrees again,
the boiler restarts. This ensures that there is always hot
liquid available when the room thermostat calls for heat,
and that the fresh water in the boiler is always warm.
An electrical heater works in the same way, but the signal
from the thermostat is sent to the relays which start the
electrical cartridges.
Liquid volume / Pressure
Liquid volume, glycol mix: 4,1 liter
Liquid volume, fresh water: 8,4 liter
Max pressure, heating system: 0,5 bar
Max pressure, fresh water: 3,0 bar
230 V ~
Output electrical cartridge (2 kW): 1050+1050 W
Output electrical cartridge (3 kW): 1050+1050+1050 W
12 V DC
Current consumption: 1 amp (max) incl. circ. pump
Fuse: 2 amp
Electronics
box
Thermostat
Overheating
protection
Fan
Pressure switch
Burner
Electrical heating
cartridges
Hot water jacket,
fresh water
Water jacket,
glycol mixture
Solenoid
valve
Measurements: Height Width Depth
Boiler size: 300 mm 345 mm 490 mm
Rec. Min. install. dimensions. 310 mm 400 mm 550 mm
Weight: 6,5 kg
Gas:
Gas pressure: I
3+
28-30/37 mbar, I
3B/P
30 mbar, I
3B/P
50 mbar
Output, Propane: 5,2 kW
Output, Butane: 6,0 kW
Consumption, Propane: 380 g/h
Consumption, Butane: 430 g/h