manualshive.com logo in svg

Alde Comfort 2923, Руководство по обслуживанию, Страница: 4 / 28

Поделиться
Скачать
Alde Comfort 2923 Скачать руководство пользователя страница 4

:1 

ABOut lPg InStAllAtIOnS

Alde 2923 and 2928 LPG boilers must be connected to the 

LPG cylinder with approved reducing valves with a pres

-

sure working the same as on the data sheet on the boiler. A 
shut-off valve, to shut off the LPG supply, must be fitted on 
the supply side of the boiler. The LPG is taken to the boiler 
with 8 mm pipes of copper or zinc-coated steel. If copper 
pipes are used, support-sleeves must be fitted at the con

-

nections. The pipes must be carefully clamped at 500 mm 
intervals with clamps which do not chafe the pipes. If the 
pipes go through walls, floors etc, they must be protected 
against chafing using a protector-sleeve of  hose or similar. 

The pipes must also be protected against spark-overs from 

electrical cables.  
LPG installations must always be pressure tested after 
installation or service. If there are any leaks, identified the 
position of the leak using a leak spray or soapy water

NOTE! Naked flames must not be used in searching for 
leaks.

For additional safety, we recommend the use of the Alde 
Leak Tester No. 4071. 

Some important points to bear in mind: 

•  Only use CE approved components  
•  Always use support-sleeves with copper pipes.  
•  Never use force in tightening connections.  

•  Inspect the rubber packing on the reducing valve when  

  changing cylinders.  

•  LPG pipes must be replaced when the rubber begins to  

  crack.  

•  Consult the Recreational Craft Directive or Recreational  

  Vehicle Directive regarding LPG installation.

 

:0  ABOut lPg

LPG is a very clean burning fuel, officially called ”Liquid 
Petroleum Gas”. This international designation is normally 
shortened to LPG. It consists primarily of the gases butane 
and propane. Propane has the advantage that it gasifies 
down to -40°C, while butane performs badly below +10°C. 
Propane as a gas is approximately 1.5 times heavier than 
air, and butane is approximately twice as heavy as air. 
This is extremely important to bear in mind in the event of 
any gas leak, since the LPG remains in low-lying spaces. 
Pure LPG has no smell, but to enable any gas leak to be 
detected, a substance with a characteristic smell is added 
(it smells like sulphur). It can be stored in the cylinder for an 
unlimited time without any deterioration in quality. 
LPG is non-toxic, but  if bottled in concentrated form it will 
give rise to some anaesthetic effects, breathing difficulties 
and symptoms of suffocation and therefore may be 

 

avoided.  
The LPG cylinder contains LPG both in liquid and in gas 
form. When the cylinder is filled, the gas turns to liquid 
through compression. When the cylinder valve is opened, 
and the pressure in the cylinder falls, the liquid turns into 
gas again. In a newly-filled LPG cylinder, approximately 
80% of the LPG is in liquid form. In new and sometimes 
in newly-filled LPG cylinders, an air-cushion may form at 
the top of the cylinder. This can cause the LPG boiler to 
be difficult to light, when the cylinder has been changed. 
This air-cushion must be blown before the LPG-cylinder is 
connected to the LPG-system. Open the cylinder valve and 
blow in the air for 5-10 sek.

Note! Be careful when blowing the LPG-cylinder. Never 
blow against a person or near open fire or simular.

When LPG is burned completely, only carbon dioxide (C02) 
and water vapour (H2O) are given off, just as in our own 
exhaled air. In the event of incomplete combustion, how

-

ever, carbon monoxide (CO), which is an extremely toxic 
gas, is formed.  
The flames from the burner must have a blue-green core, 
the primary flame, and a pale blue secondary flame around 
this. To ensure complete combustion, a good supply of air 
is required. 
LPG burners normally work at a lower pressure than that in 
the cylinder. Alde’s LPG boilers work at a pressure of 28/37 
mbar. This reduction in pressure is achieved by passing the 
LPG through a reduction valve, which is screwed on top of 
the LPG cylinder, or on to an automatic LPG connector. 

Pressure ranges

Low pressure  Reduced pressure 0 - 50 mbar
Intermediate  Reduced pressure above 50 mbar up to  

 

2.0 bar. Low pressure and intermediate  

 

pressure are always reduced pressures  

 

which are regulated by a reducing valve.

High pressure  Unreduced pressure or pressure over 2.0  
 

 

bar. High pressure is used principally for  

 

 

camping equipment and special heating  

 

 

burners. 

 

Safety valve

Cylindervalve  

Gas

Liquid

Outlet 

Fig 6.  Filled cylinder of LPG, cutaway diagram.

Содержание Comfort 2923

Страница 1: ...SE GB Servicemanual Comfort 2923 2928 ...

Страница 2: ... The handbook may also be of assistance in ordering spare parts in understanding how the boilers operate and how they are installed It also includes general information on how our heating systems are designed and some information on LPG and LPG installations We hope that you will find this manual very useful and that it will save you time during service and fault finding on our boilers Alde Intern...

Страница 3: ...th liquid Ensure that the caravan or boat is level and check that the air screws and drainage tap are closed Remove the upper front plate on the boiler Then slacken the plastic cap on the circulation pump and lift up the pump Then carefully pour the glycol mix into the expansion chamber When the system is being filled air pockets may form depending on how the pipe system was installed A good indic...

Страница 4: ... with a characteristic smell is added it smells like sulphur It can be stored in the cylinder for an unlimited time without any deterioration in quality LPG is non toxic but if bottled in concentrated form it will give rise to some anaesthetic effects breathing difficulties and symptoms of suffocation and therefore may be avoided The LPG cylinder contains LPG both in liquid and in gas form When th...

Страница 5: ...t demands heat the circula tion pump starts The liquid in the system then begins to circulate and cold water enters the boiler A sensor fitted in the water jacket senses that the water is colder than the temperature set on the boiler thermostat The pilot light ignites the main burner which heats up the liquid and circu lates it round the system When the warmth in the caravan reaches the temperatur...

Страница 6: ... thermostat Switch N K Switch 12 230 V 12 V Circula tion pump Relay on el cartridge for 230 V circ pump 12 V Fuse ON OFF Room thermostat Switch N Switch 1 kW 2 kW 1050 W 1050 W 0 Circuit board on el cartridge 4 0 Flow chart LPG Boiler Circulation pump Output electrical cartridge ...

Страница 7: ... hub wipe any excess away If the knob feels springy does not remain in the position in which it is released lubricate the o ring very sparingly with grease Replace the thermostat knob NOTE When the thermostat knob is removed it must be re fitted in the same position otherwise the temperatures setting will change 5 1 General fault finding This guide to general fault finding should be useful in rapi...

Страница 8: ... 6 The pilot burner must burn with a clear blue flame without yellow peaks Check that the tip of the thermo element is in the centre of the pilot flame Adjust if necessary by carefully bending the bracket Check and if necessary clean the contact surfaces in the joint nipple between the thermo element the over heating protection and the magnetic insert in the automa tic unit and that the nuts on th...

Страница 9: ...medial action Check in the expansion chamber that the heating system is filled to the correct level with 40 glycol mix Check that the sensor is attached with heat conducting paste between the boiler and the sensor and that the capillary tube is not damaged Turn the thermostat knob to position 1 and check that the main flame goes out and if it does lower the max temp setting If the flame does not g...

Страница 10: ...cts 5 14 Circulation pump does not start Cause No voltage to boiler Switch on room thermostat off Temperatures setting too low room thermostat has trip ped Room thermostat wrongly calibrated or faulty Switch for circulation pump on control panel in wrong position faulty Cable connections not attached to motor Pump motor faulty Remedial action Check voltage and fuse Check that the switch on the roo...

Страница 11: ...e boiler see fig 16 8 Check that the front packing fig 16 A is intact before the burner unit is replaced Fasten the burner unit and earth cable Attach the inlet gas pipe to the burner unit and tighten Install the overheating protection sensor and ignition cable Ensure that there is heat conducting paste between the sensor and the boiler Check that the capillary tube to the boiler thermostat overhe...

Страница 12: ... temperature With the sensor in a water bath temperature 70 C turn the thermostat knob from position 7 towards 1 switching ticking occurs between positions 6 4 On burner unit with serial numbers 28798 the water bath must be at 65 C 6 Press in the plastic plug fit the rod with the plastic adap ted NOTE The figure 5 must be visible in the hole Turn to the stop position check that the spark shuts off...

Страница 13: ...t fig 19 A from the joint nipple fig 19 B below the automatic unit and pull out the thermo ele ment through the cable opening on the front plate of the burner unit 4 Check the contact surfaces on the joint nipple and the overheating protection clean or replace joint nipple if necessary 5 Install the new thermo element in reverse order NOTE The tip of the thermo element must be pres sed up as far a...

Страница 14: ...te of the burner unit 3 Fit the new ignition cable and connect it to the spark plug and ignition transformer Don t firget the silicone sleeve 4 Push the burner unit into the boiler and install it in accor dance with Chapter 6 1 Check that the capillary tube to the boiler thermostat the temperature limiter and the ignition cable are correctly aligned to the right of the automatic unit and are not t...

Страница 15: ... inner screw on the micro switch fig 27 A a couple of turns adjustment screw remove the outer screw fig 27 B Removed the micro switch note the location of the cables move cables and adjustments screws to the new switch fit and tighten the screws 5 Fit the rod in the automatic knob and replace the screw 6 Adjustment Set the thermostat knob in the ignition position Slacken the adjustment screw and p...

Страница 16: ...e top cover of the boiler Switch on the main power switch turn the ther mostat knob to the ignition position and check that the indicator lamp flashes and that there are sparks at the spark plug If necessary adjust the micro switch Carry out a complete functional check on the control panel to ensure that all functions are OK Test start the boiler and check that the thermostat knob can rotate freel...

Страница 17: ...35 B inwards 6 Transfer the ignition transformer to the new control box note the location of the cables fit the cables 7 Fit the connection block and the earthed connections in the top cover earth cable on the burner unit the cables to the 12 V circulation pump as well as the connection block to the electrical cartridge 8 Install the control box by pressing it into the metal sweep of the boiler un...

Страница 18: ...on the connection pipe before the vessel is fastened properly Then pressed the new expansion vessel down on to the pipe bend and tighten the nut fig 38 B a few turns Attach the support fig 37 A and then tighten the nut Fit the hoses 9 Close the drainage tap and top up the liquid in the expansion vessel Lower the circulation pump into the vessel and screw on the plastic nut fig 36 B Attach the pump...

Страница 19: ...Red Black Fuse 1 A Red Black _ 12 V DC Battery Room thermostat Yellow P Red White N K 12 220 Pump Blue Grey Red 275 ohm 275 ohm 275 ohm 230 pump 1000 W 1000 W Electrical cartridge N 1000 W 2000 W Red Yellow Black K Black Ignition transformer Micro switch Green Yellow L _ ...

Страница 20: ...20 20 8 0 Exploded view 2923 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 ...

Страница 21: ...21 21 9 0 Exploded view 2928 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 25 26 27 28 29 31 31 33 34 35 36 30 41 40 39 38 37 40 24 42 43 44 45 ...

Страница 22: ...22 22 10 0 Exploded view 2923 2928 980 1 2 3 4 5 9 10 11 12 13 14 15 17 18 19 20 21 22 23 24 25 26 27 28 29 32 33 34 8 30 31 7 6 16 ...

Страница 23: ...cable 39 2923 112 Control box 2928 page 21 No Part no Designation 1 2923 154 Front plate upper complete 2 2923 111 Hatch 3 2923 153 Front plate lower complete 4 2930 423 Plastic nut 5 2928 405 Circulation pump complete Airpax 6 2930 413 Expansion vessel complete 7 2923 200 Control box complete 4 switches 8 2923 210 Panel complete 4 switches 9 2923 114 Micro switch 10 2923 113 Knob 11 2923 121 Knob...

Страница 24: ...15 2923 208 Ignition cable 16 2920 230 Overheating protection 17 2923 125 Ignition transformer compl 18 2930 133 Spring 19 2930 236 Front packing 20 2923 301 Boiler casing for 2959 warm water supply 2928 201 Boiler casing for 2959 warm water supply 21 2923 025 Bracket 22 2923 173 Spacer 23 2923 174 Spacer strip 24 2920 123 Plug 25 2920 167 Plate sweep 26 2923 197 Escutcheon plate 27 2930 134 Top c...

Страница 25: ... Motor to 2920 410 Dunker 1 2 3 2923 400 Burner unit 2923 980 and 2928 980 1 2920 230 Overheating protection 2 2923 207 Spark plug 3 2923 201 Pilot burner 4 2923 114 Micro switch not mod 980 5 2920 245 Thermo element 6 2900 271 Joint plug 1 2 3 4 5 6 1 2921 216 Ignition transformer compl 2923 980 and 2928 980 2 2923 225 Ignition transformer compl 2923 and 2928 3 2923 417 Ignition cable 2923 980 oc...

Страница 26: ...923 200 Control box compl 3 2921 217 Fuse 1 A 4 2923 115 Ignition lamp 1 2923 112 Control box 2 2923 111 Hatch 1 2 1 3 2 4 1 2921 215 Switch ON OFF 2 2921 219 Switch ON OFF ON 3 2920 215 Control box 2923 2928 980 4 2923 410 Panel 2923 2928 980 4 3 2 1 ...

Страница 27: ...27 27 ...

Страница 28: ...Service 2923 2928 Rev 916 GB Alde International Systems AB Wrangels allé 90 Box 11066 S 291 11 Färlöv Sweden Tel 46 0 44 712 70 Fax 46 0 44 718 48 www alde se info alde se ...

Отзывы:

Нет отзывов