Manual Alde Comfort 2928 (page 10 of 16) (English, German, Swedish)

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The connection should be made in accordance with g

10.

240 volts (immersion heater only)

The immersion heater must always be connected to

a 240-volt earthed socket. Permanent installation of a

240-volt wallsocket must be made. Keep cables clear

of immersion heater body.

WARNING: 240 volts must be well shielded from 12

volts.

Fig 10

Terminal blockA.

Cut-out 1 amp fuseB.

Room thermostatC.

Battery 12 voltsD.

The boiler from aboveE.

FITTING THE HEATING SYSTEM3.

In order to obtain the best effect from the heating sys-

tem, the radiators should be tted along the outer walls

and under the windows. In order to obtain good air

circulation (g 11) and correct heat emission, fresh air

should be able to pass between bed bases, oor and

back cushions and outer walls (see g 12). It is there-

fore extremely important that air gains free access to

the radiators, as these are to supply the majority of the

heat to be distributed inside the vehicle. If no holes are

made for air gaps as per g 13, the radiators will not be

able to emit sufcient heat, which will lead to a sharp

fall in temperature at windows and outer walls, leading

to condensation.

Installation should be carried out using Ø 22 mm pipe

and any type of radiator. Radiators constructed of

copper piping are most efcient. Every metre of radia-

tor has a heat emission of about 400 watts. Pipes and

radiators must not be placed higher than the bottom

of the boiler’s expansion vessel. The boiler must be

raised on a plinth if there are upper alcoves, se g 12.

How many metre’s of radiator are required in the

vehicle?

The most important thing is to have a radiator under

each window that is slightly longer than the window.

A useful guide is the length of the living area x 1.5 =

the number of metres of radiators, but the greater the

length of radiator, the better and more even the heat

distribution. This allows a lower system temperature in

the boiler for the same heat emission. This saves gas

and provides a more pleasant heat. The pipes should

be run horizontally and air screws should be located at

suitable places where air cannot escape by itself, e.g.

if the pipe is run over the wheel housing. If the vehicle

has a sleeping alcove above the driver’s cab, it is very

important to locate an air screw at the highest point

(see g 12 E). All curves should be as gentle as pos-

sible, otherwise circulation is obstructed.

Make sure that radiators and pipes are properly at-

tached with brackets. As a connection between ra-

diators and pipes, short rubber connections made of

special rubber should be used. The rubber connections

should be secured with wire clips. A sealant between

the rubber connections, Permatex Form-a-Gasket no.

3 should be used. A draining valve should be tted to

the lowest point of the pipe (see g 12 F).

NB. Aluminium and copper must not be mixed in the

heating system, because the copper corrodes the

aluminium. It is even very important not to use the

same equipment for cutting and handling copper and

aluminium. If a copper shaving, for example, gets into

an aluminium pipe, it will almost certainly give rise to a

hole in the pipe.

Fig 11

Air owA.

RadiatorsB.

Fig 12

Circulation owA.

Circulation returnB.

Ventilation ductC.

RadiatorD.

Air nippleE.

Drain cockF.

Room thermostatG.

Connection to the heating system3:1

The LPG boiler’s connections to the heating system

are located on the rear of the boiler. Use the same

rubber connections, clips and sealant as for the rest of

the system.

LPG boiler with water heater type 2959 and immersion

heater should be tted in accordance with g 14.

Fig 14

Flow radiator waterA.

Return radiator waterB.

Filling the heating system3:2

The heating system must be lled with a liquid mixture

consisting of 60% water and 40% glycol. Use high

quality glycol that is designed for heating systems and

contains inhibitors. If the heating system is exposed to

temperatures lower than -25 °C, the glycol percentage

is to be increased, but it should not exceed 50%.

Vessels used to handle the liquid must be absolutely

clean, and the pipes in the heating system must be

free from contamination. This is necessary to prevent

the growth of bacteria in the system. Filling is carried

out through the expansion tank, either manually or

with the aid of Alde’s lling pump. This pump both lls

and bleeds the system. If the system is lled manually,

slowly pour the liquid until the level is approximately

1 cm over the MIN-line in the tank. Bleed the system.

Rell if the level has fallen during bleeding. A newly

lled heating system should be bled at regular intervals

during the rst few days of operation.

Where can I get an Alde control house and lid in EUROPE for a 2923/2928? Submitted on 29-8-2021 at 17:16
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Alde Comfort 2928 Manual

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