Generator Aer Cald Pe Ulei Uzat Functionare Prin Vaporizare MTM 17 33 KW 1000 m3 h Fisa Tehnica

8/9/2019 Generator Aer Cald Pe Ulei Uzat Functionare Prin Vaporizare MTM 17 33 KW 1000 m3 h Fisa Tehnica

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Heating, Air conditioning, Ventilation

MTM 17-33 kW UNIVERSAL OIL-FIRED HEATER

OPERATING MANUAL

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6. Design of the controller

Fig. l.Block diagram of the controller of MTM17-33 universal oil-fired heater.

Designations:

T40 bimetallic sensor of furnace temperature

T100 bimetallic safety sensor ( STB )

OVF overflow safety device

MP pump

MW fan

KB keyboard

D1 furnace overheating indicator

D2 overflow tank overfilling indicator

D3 furnace on/off indicator

7. Installation of the heater

Familiarize with applicable local regulations. Position the furnace on a flat concrete base.

Level the heater. In order to check whether the heater is levelled, place the furnace pan in the lower part

of the combustion chamber and pour a small amount of diesel oil on it.

The oil should spread accurately in the middle of the pan.

Mount the draught stabiliser on the pipe coming out from the combustion chamber in order to ensure

stable draught inside the pipe during the heater operation.

In order to ensure the optimal draught, install a vertical chimney pipe ( not made of aluminium) which is

at least 6 meters long, smooth and resistant to high temperature.

Check leakproofness of all connections, seal them with insulation tape if necessary.

Make sure that the combustion pan is located centrally in the combustion chamber.

Place the deflector inside the combustion chamber (the edging in the middle of the deflector should bedirected upward) and mount an afterburner cylinder on it.

Check the mains voltage (220-240V/50Hz) and connect the furnace to power supply, neither the fan nor

the pump should start automatically as the furnace has not been switched on yet and no heat has been

produced.

CONTROLLER

MODULE


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8. Description of the heater operation

Control panel

The controller of MTM 17-33 universal oil-fired furnace is equipped with an adjusting knob and two push-

buttons which enable the user to control the heater operation and with three diodes which signal operating

statuses of the heater.

Fig.3. View of the front panel of the control module of the universal oil-fired heater.

The following states characterize the heater operation:

Stop the heater is ready for start-up

Firing up initial stage of the heater operation

Operation proper operation of the heater

Extinguishing switching the heater off

Overheating emergency switch-off

Tank overflow emergency switch-off

The heat generation process involves combustion of gas which is produced by oil heated to a high

temperature. The heater connected to the mains is in the readiness state (Stop) and no heat is produced,

neither the fan nor the pump is operating. When Startpush-button is pressed, the green diode lights up and thefurnace goes to the firing upphase. After the furnace is heated to the temperature of 40C, the contacts of the

thermostat placed next to the combustion chamber are closed and the oil supply pump and the air supply fan

are switched on. Due to smaller oil demand of unheated furnace, the heater will operate at the lowest power

level for at least 30 minutes. During this period the pump supplies approximately 1.7 litre of oil to the furnace.

After thirty minutes of operation, the power of the heater can be regulated using the power adjustment

knob located on the controller's panel. During operation of the heater at the highest power level, about 3.3 litre

of oil is supplied to the furnace.

The heater is switched off by pressing Stop push-button on the control panel.

The heater is switched off at the moment of pressing the push-button. The exhaust fan operates until the

furnace temperature is lower than 35 C (Extinguishing). When a temperature lower than 35C is reached, the

furnace returns to Stop phase.

The furnace may be switched off automatically in the following cases:

- overheating of the combustion chamber

- overflow

Furnace overheating

indicator (STB thermostat)

Overflow indicator of

overflow pan

Furnace operation

indicator

Furnace breaker switchFurnace power

adjustment

Furnace switch-

key


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The overheatingsignal is generated by the bimetallic sensor located near the fan. Opening of the contacts

signals that the threshold temperature is exceeded. The control system switches off the pump (the pump

operation indicator (green diode) is extinguished); the overheating status is signalled by the red diode which

lights up on the control panel. The exhaust fan operates until the furnace temperature drops below 35C. When

a temperature lower than 35C is reached, the furnace returns toStop phase.

After switching to Stopphase (and even after switching off and then again switching on the power supply)

the overheating signal is still on. This enables the user to determine the cause of switching off the furnace.

In order to clear the overheating signal and return to normal operation, wait until the furnace is cooled

down (the fan is switched off) and press the push-button placed on the bimetallic sensor housing. Then, press

Startpush-button. The diode which signals overheating will extinguish. The furnace may be restarted.

The overflowsignal is generated by the mechanical sensor placed under the overflow tank. The opening of

the contacts signals overfilling of the tank. At the same time, the pump is switched off. The pump operation

indicator (green diode) extinguishes and the relevant red diode lights up in order to indicate overfilling. The

exhaust fan operates until the furnace temperature drops below 35C. After reaching a temperature lower than

35C, the furnace returns to Stopphase. Empty the overflow tank and press Start push-button. The diode which

signals overflowing (red diode) will extinguish. The furnace may be restarted.

Fig.4. Arrangement of the heaters protections:1. Thermostat on the combustion chamber

2. Protection against overheating

3. Overflow protection


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DO NOT!!! disconnect the heater from the mains when the fan is in operation! Wait until the furnace is cooled

down. The furnace is switched off automatically. Remember that after the heater is switched off, the pan

made of cast iron still maintains a higher temperature for some time (depending on ambient temperature)

and the furnace must not be fired up again until the pan is completely cooled down!

DO NOT!!! throw the hot pan into snow and do not pour cold water on it in order to accelerate cooling down.

Otherwise, due to a large temperature difference, the hot pan will break and become useless!!!

Fig.5. Design of the heater

1.

Combustion chamber base

2.

Deflector

3.

Combustion chamber

4. Cylinder

5.

Fuel tank6. Pump and controller

7.

Oil supply conduit

8.

Furnace chamber cover


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Fig.6. Combustion chamber

Maintenance

The heater requires little maintenance activities. The observance of manufacturers recommendations

concerning maintenance will ensure failure-free and safe operation of the heater:

- clean the furnace pan and other elements of the combustion chamber (cylinder, deflector and cover)

daily,

- confirm that the overflow tube is not blocked (the tube in the lower part of the combustion chamber,

directly over the overflow pan), clean it if necessary,

- clean the combustion chamber base (the element under the furnace pan) at least once a week,

- confirm that the air inlet openings in the bottom and the top part of the combustion chamber are not

covered,

- at least once a week, clean the conduit supplying oil onto the furnace pan, the maximum time of

operation without cleaning the furnace pan is about 7-14 hours (depending on type of oil used for

combustion),

- during the heating season, clean the fuel tank and the oil pump filter,

- if the furnace is to be out of operation for a longer period of time, thoroughly clean the combustion

chamber and the daily tank and protect them against corrosion by coating them with a thin film of oil.

PERIODICAL MAINTENANCE SURVEYS ARE RECOMMENDED TO BE PERFORMED BY AN

AUTHORIZED SERVICE

CHAMBER COVER

CYLINDER

DEFLECTOR

RING

CHAMBER JACKET

OVERFLOW TUBE

FURNACE PAN

CHAMBER BASE


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10. Troubleshooting

In case of failure of the heater, the below list may help in identifying the failure. Usually, the defect can be

rectified easily. The most frequent causes of failures are enumerated below. The digits signify possible causes of

failures. The order of the digits indicates probability of failure occurrence.

ATTENTION:Before starting any activities, pull the plug out of the mains socket.

DEFECT CAUSE

The pump does not start and the pump operation indicator lamp does not light up 6-3-7

The flame is put off and the pump is still in operation 2-5-9-10-12

The combustion chamber emits rumbling noise. 10-11-12

There is soot in the combustion chamber and in the chimney. 8-9-10-11-12

Unburnt oil remains on the combustion plate. 8-9-11-12 or there is too

much diesel oil at the start-up.

No. CAUSE REMEDY

1Lack of power supply Check whether the plug is in the socket and check

the fuses

2 Water or deposit in the tank Clean the tank and the filter

3 The pump motor cannot be switched on Check the STB and the overflow protection

4

The motor and the pump do not work Fuel is too dense or too cold. Dissolve it with diesel

oil

Check the pump operation control thermostat and

replace it if necessary.

Check the motor and see whether the pump is not

dirty inside.

Check the STB and the overflow protection

5The fuel conduit is blocked; oil returns to the

tank through the return conduit

Clean the fuel conduit or replace it, if necessary

6The pump operation control thermostat has not

reached the right temperature

Wait until the furnace cools down and restart it

Replace the thermostat

7 Overflow protection is full Clean

8The safety thermostat (STB) does not operate

correctly or does not operate at all

Reset the thermostat

Replace it

9 Insufficient combustion air inflow

Clean the openings of the furnace chamber Check proper operation of the fan

10

Improper draught Check whether the chimney pipe is installed in

accordance with the instructions entitled

Installation of the chimney pipe

Check leakproofness of the chimney system

Clean it, if necessary

11Chimney draught is too strong or too variable Install the chimney draught stabiliser and adjust it

to minimum 2 mm W.C. (19.6Pa).

12

Chimney draught is too weak Check all the connections

Decrease the number of bends

Extend the chimney

Insulate the chimney pipe outside the building

See all the information regarding the flue contained

in the manual.


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LIST OF PARTS OF MTM 1733 HEATER

1733.001FAN

1733.002AIR SUPPLY FLAP

1733.003MAINS CONDUIT WITH A PLUG

1733.004COMBUSTION CHAMBER HOUSING

1733.005CONTROL THERMOSTAT SHIELD1733.006COMBUSTION CHAMBER MADE OF STAINLESS STEEL

1733.007CONTROLLER PANEL

1733.008CONTROLLER HOUSING

1733.009CONTROL THERMOSTAT

1733.010MOTOR HOUSING

1733.011FUEL FILLER CAP

1733.012FUEL FILLER FILTER

1733.013FUEL PUMP MOTOR

1733.014FUEL PUMP BRACKET

1733.015FUEL TANK DRAIN VALVE

1733.016

FUEL TANK WITHOUT COVER AND DRAIN VALVE1733.017FEED PIPE TEE (FEED PIPE + RETURN PIPE + PIPE TEE)

1733.018FUEL PUMP DRIVE SHAFT

1733.019FUEL PUMP

1733.020FUEL PUMP FILTER

1733.021FEED PIPE WITH PIPE UNION

1733.022HEATER BASE (LEGS + TANK GUIDES + SCREWS)

1733.023DEFLECTOR OF TANK HOUSING

1733.024TANK SHIELD

1733.025COMBUSTION CHAMBER BASE

1733.026OVERFLOW PROTECTION

1733.027

COMBUSTION CHAMBER PAN MADE OF CAST IRON1733.028TANK HOUSING

1733.029OVERFLOW MICROSWITCH

1733.030COMBUSTION CHAMBER RING

1733.031COMBUSTION CHAMBER DEFLECTOR MADE OF CAST IRON

1733.032STAINLESS COMBUSTION CHAMBER CYLINDER

1733.033STAINLESS COMBUSTION CHAMBER COVER

1733.034CHIMNEY DRAUGHT REGULATOR

1733.035BACK COVER OF COMBUSTION CHAMBER

1733.036FAN HOUSING

1733.037FAN SHIELD

1733.038

STB THERMOSTAT1733.039STB THERMOSTAT SHIELD

1733.040ELECTRONIC PLATE OF CONTROLLER

1733.041PADDLE FOR COMBUSTION CHAMBER CLEANING

1733.042SMALL CULVERT

1733.043LARGE CULVERT

1733.044FIRE-RESISTANT CONDUCTOR 5X1 LENGTH 2.6M

1733.045 - FIRE-RESISTANT CONDUCTOR 3X1 LENGTH 1.2M

1733.046 - FIRE-RESISTANT CONDUCTOR 3X1 LENGTH 0.9M

1733.047SUPPLY FUEL CONDUIT MADE OF RUBBER

1733.048OVERFLOW FUEL CONDUIT MADE OF RUBBER

1733.049RUBBER FUEL CONDUIT OF PUMP FILTER

Generator Aer Cald Pe Ulei Uzat Functionare Prin Vaporizare MTM 17 33 KW 1000 m3 h Fisa Tehnica

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