PDF- -Índia só aceita a paz conquistando Bangla - CALDERA DE FLUIDO TÉRMICO - CE_INGLES




fulfill the effective directive European of devices to pressure D

The design of these generators is based on the most renowned construction codes such as the German AD-MERKBLÄTTER

All the materials which are used in the construction of the boilers,

bear the Original Quality Certificate,nevertheless


performs a further checking on the mechanical and chemical features,

which allows to secure the complete reliability of the product

The welding process and the welding personnel is duly approved by a Cooperating Entity to the Administration

The user receives full documentation proving all these approvals together with the corresponding Quality Control Dossier

In the same also the Certificates for the Original Quality Control are contained

The official stamping is for a max

working pressure of 9 kp/cm²,

at a design pressure of 9 kp/cm² this impels a proof pressure in the workshop of 1

87 kp/cm²

All PIROBLOC generators are registered under the C Category,

following the actually valid Standards for Pressure Equipments,

this allows their installation without any limitation regarding their emplacement

without any adjusted or preset level,

with automatic operation and indirect supervision,

provides heat by means of liquid or gaseous fuels

These heaters have cylindrical cover,

and they are prepared to increase the temperature of the thermal fluid that circulates through two concentric coils,

by means of the combustion of liquid or gaseous combustibles in a burner

This burner is located and fixed in the upper flat lid (12)

There is a rockwool isolation (10) between both covers,

providing therefore a minimum structural loss and also avoiding harmful burnings through involuntary contact with the boiler

Item list: 1

Internal coil 2

Coil lid 3

Combustion chamber lid 4

Internal cover 5

External cover 6

Connecting flanges 7

Bottom combustion chamber 8

Bottom isolation 9

Kaowool 10

Isolation 11

UPN contour 12

Boiler lid 13

External coil 14

Closing combustion chamber The burner flame is projected towards the combustion chamber,

then depending on the adjustment of the combustion,

it will strike the ceramic bed that closes the fireplace (7),

changing then the sense so that the combustion gases go up at high speed and with turbulence,

between both coils until reaching the upper conic lid (2),

at that stage their sense will get again descending,

until they are exhausted by the chimney which is situated on the lower edge of the covers

The coils (1 and 13) may be of one,

being essential the high speed in the circulation of the thermal fluid,

in order to obtain a good heat transmission and also to avoid the "cracking" of the said fluid

These coils are manufactured in stretched steel without any welding St

thickness according to DIN 2440

The circulation of the thermal fluid is done initially through the outer coil (there where heat is transmitted almost only by convection),

passing later on to the internal coil (where heat is transmitted almost exclusively by radiation),

obtaining then an excellent energetic result

The slightly conic lid,

This last one,

serves as closure to the smoke passage between the coils and disposes of the corresponding holes for the passage of the coil pipes which are connected to the general collector,

being connected to the circuit by means of flanges (6)

The detachable,

moving part closes the combustion chamber,

and is where the burner is attached

Easily this part can be taken out,

providing an easy access to the combustion chamber for the necessary maintenance works

The external lid is flat and has the proper fastening tabs for transporting the boiler,

facility that is possible in the higher standard models

Also there is the possibility provided for fastening the boiler to the UPN profiles that are located in the bottom (11)


350 ºC

Design temperature

350 ºC

Design pressure

9 kp/cm2

9 kp/cm2

Official proof pressure

FEC Contained fluids : Thermal fluids Design pressure : 9 kp/cm² Official proof pressure : 12

working pressure : 9 kp/cm² Design temperature : 350ºC Combustibles : liquids and gaseous Approval countersign : CE According to D

Model GFT-010/20 GFT-020/20 GFT-040/20 GFT-060/20 GFT-090/20 GFT-130/20 GFT-170/20 GFT-230/20

Heating power (kcal/h) 150

000 300

000 500

000 850

Capacity (liters) 53 91 168 506 782 1086 1581 1772

Circulating flow (m3/h) 15 30 50 85 120 160 200 250

Head loss at 20 ºC (mcl) 39

Head loss at 350 ºC (mcl) 15

Manufacturer : PIROBLOC,

La Ferrería c/ del Vapor 46 08110


Type : Thermal fluid generator Trademark : P









as the one shown on the included drawing,

valves and accessories Its operating diagram is as follows : The thermal fluid is suctioned by the circulating pump (3) through the pipe (1) and the valve and filter (2),

after it is introduced in the generator (4)

The thermal fluid flows out of the boiler passing through the valve (5) and through the general net (6),

reaching the different consuming points (8),

controlled by means of automatic valves

These automatic valves can be of two or three tracks,

the working temperature in the equipment is therefore precisely regulated by them

Each consuming equipment can be independent of the general net thanks to manual valves that are installed in each line (7)

Once the heat is "placed" in the consumer equipment,

the fluid will return to the collecting bottle (9),

PIROBLOC installations AUTOMATICALLY the installation will be drained and goes back again to the circulating pump in order to restart the cycle

The valve (18),

operates as general "by pass" to the circuit

These valves may be of mechanical drive (ballasted valve) or of electrical or pneumatic drive (automatic valve)

When heated,

the thermal fluid gets expanded,

by decreasing its density (see thermal fluid features)

at 200ºC we get a volumetric increase of approx

The expansion tank (11) should have sufficient capacity so that it is not filled up totally,

when the thermal fluid of the whole installation is at the highest temperature,

while at room temperature the expansion compensating pipe (10) should not remain without oil,

causing therefore the failure of the circulating pump,

Further on,

this tank is also used for making the AUTOMATIC drainage of the circuit


when the thermal fluid passes through the collecting bottle (9),

the humidity and the gases will be detached and they are brought through pipe (10) to the expansion tank,

where they are either condensed or they are exhausted through pipe (12) to the collecting tank (13)

It is a closed circuit,

for this reason there is a thermal fluid pillow installed,

in the collecting or gathering tank,

which absorbs the pressures and underpressures which could arise in the circuit,

The siphon (14) avoids also the air entrance to the collecting tank

The humidity will only be present during the start up of the installation,

precisely at this moment the connection of the expansion tank and the collecting tank should be avoided,

as this fact would cause the storage of humidity in the collecting tank ,

and this of course could also cause its later entrance again in the circuit when this tank is filled up

During the operation,

only the gases that are generated by heating up the thermal fluid,

The gathering tank has,

besides the function of being the pillow for the gases,

also the function of absorbing the fluid of the installation for the complete drainage of the same,

when any repair or maintenance works have to be done

It should be situated in the lowest place of the installation,

either on the surface or embedded

The refilling and drainage group (16),

enables to carry out these operations from cans (18) to the tank or to circuit and reverse,

Some consuming points could have recirculation groups (19) when uniform or very precise temperatures in the product are needed (around +/-1ºC)


all the installations made by PIROBLOC satisfy also all the dispositions and laws corresponding to the Municipality and/or Autonomous Community where the installation has to take place

On the included drawing,

the securities and controls of the installation are shown

The operating and security elements are indicated in blue color

In green color are the control elements and in red color the safety elements

The boiler and installation securities and controls are:

Visual level in the collecting tank (LI) Temperature security pyrometers for the thermal fluid and the smokes in chimney (TAH) Electric level for minimum in the expansion tank (LSL) Manometers for boiler entrance and exit (PI) and temperature intake (TI) Thermal relays for motor protection Differential pressure switch (dPSL) Maximum pressure switch (PAH) Operating pyrometer (TIC) Flame control (BAL) Safety stop Hour safety Acoustic warning

Following we will observe in detail the function of each one:

Operating and control elements

oil temperature (TAH) Warns about a possible failure on different elements,

which could cause a considerable increase on the thermal fluid temperature

Safety element which locks the burner

smoke temperature (TAH) Detects a too high increase of the combustion gases temperature by the boiler (chimney) exhaust,

due to failure in any control element

Safety element which locks the burner

due to insufficient pressure between the entrance and the outlet of the boiler

Safety element,

due to an increase in the pressure,

which is delivered by the circulating pump

Safety element,

in order to inform on the same

Safety element

Operating and safety elements

avoiding tightness at high temperatures,

which could be harmful to the oil load

Operating and safety element

to verify the correct state of the equipment

Safety element

Control element

Safety element

informing on the correct circulation of the thermal fluid

Control elements

Other standard elements,

belonging to the own function of any burner are :

depending on the needs of the equipment

Operating and control elements

when there is no demand on it,

at the same time as the electrovalve for the first and second flame,

Safety element

Operating and safety element

or ionization probe (Flame control) (BAL) Light detecting,

therefore detection of flame forming,

indicating that combustion has started,

Safety and control element

who will also give instructions and train about the correct use,

the personnel in charge of operating the equipment

Before the routine start-up,

following points will have to be checked: 1) Verify the correct filling of the installation,

observing that the luminous signal of Oil level,

once the voltage has been connected

Also the visual level installed on the expansion tank,

indicate the usual static level,

Some of these operations (7) and (8),

if the person in charge of the boiler is always the same one


when there takes place a shift change,

variations may happen in the operating state,

if these are not passed on to the entering person in charge,

Once these operations have been done,

you may proceed to start up the thermal fluid circulating pump,

observing that the dynamic pressures in the impulsion manometers of the pump and the boiler exit must be the usual ones for start up

These are higher pressures than those of the installation in normal operation,

having in mind the variation of the physical changes in the thermal fluid regarding with the temperature

The burner is connected as soon as the circulating pump is in normal operation

This one cannot be connected without the operating presence of the circulating pump,

The installations do not require any special care during normal operation

However checking of the pressures and the temperatures is necessary,

when relieving the timer after the obligatory stop (every two hours)

When labor day is ending,

the cooling circuit MUST be connected,

in order to avoid stopping at high temperature as this may damage the thermal fluid load,

causing a quicker degradation of the same

periodically following reduced maintenance steps should be taken into account and performed in order to dispose always of the best working conditions of the boiler and of the installation in general :

checking of the oil level in the expansion tank

If there is not sufficient oil inside,

until reaching about 1/3 of the tank

This operation must always be done when the installation is IN COLD condition

connections and automatic devices

either by means of a mercury thermometer,

or by means of the electrical signal readings that the controller receives

Please keep in mind,

that in those installations with thermocouple type (FeKonst),

to the indicated value on the table,

the room temperature has to be added

The most convenient point for this extraction lays in the emptying-filling up circuit,

rejecting the fluid that is inside this circuit

a PIROBLOC technician or any other competent person,

following the norms stated in the prevailing Rules for Pressure Equipments


there is available the maintenance department for the periodical services,

including analysis and regulation of the combustion,

extractions and sampling of the thermal fluid load and checking of the correct function of all controls and safety devices in the installation

This checking service is made in view of the working hours in each plant,

and can be done either monthly,

After each revision a detailed report is send out,

fully explaining the work which has been done and giving an evaluation on the state of the equipment

Should you be interested in such a revision service,

we kindly ask you to get in touch with


are related to the burner and the pump

These failures are already described in the corresponding section herewith

On the other hand,

normally a thermal fluid boiler or installation does not have failures,

due to their simple ness the maintenance functions are just as easy to carry out


CAUSE Thermal fluid filter is dirty

SOLUTION Sieve cleaning

Pass an entire process in cold,

closing previously the suction valves of the pump and drive

Lack of thermal fluid in the Proceed to fill up in cool state installation Pressure Proceed to automatic drainage of the installation,

Cavitation The installation contains very slowly increasing the working temperature after 100ºC onwards

Try to find out how the humidity humidity could enter into the installation (exchangers) and solve the problem Degradation of the thermal Analysis of a sample and change the thermal fluid fluid load if necessary

Make a circuit cleaning Working temperature Locking due Modify according the temperature adjustments of increases,

whereas the other to the the smokes and the safety temperature adjustments do not increase Casual modification of the s'of the Proceed to adjust new values smokes or adjustments due to Degradation of the thermal Analysis of a sample and change the thermal fluid security fluid load if necessary

Make a circuit cleaning Dirt inside the boiler Boiler inside cleaning Degradation of the thermal Analysis of a sample and change the thermal fluid Frequently fluid load if necessary

Make a circuit cleaning filling-up of Important leakages in the the thermal Check the sealing and tightness of the circuit installation fluid Leakage in a secondary circuit Check the sealing and tightness of the circuit Change of the set-point

The pressure switch is locked

Readjust the set-point

Proceed to automatic drainage of the installation,

increasing very slowly the working temperature Humidity in the circuit after 100ºC onwards

Try to find out how the humidity could enter into the installation (exchangers) and solve the problem Degradation of the thermal Analysis of a sample and change the thermal fluid fluid load if necessary

Make a circuit cleaning Change in the hydraulic circuit Check the operating point of the pump (enlargement)


that the end user of a thermal fluid installation,

should keep a set of basic spare parts,

so that any possible failure which could arise through the incorrect operation of one of the mentioned pieces,

can be repaired quickly on site by the user himself

By doing this,

long idle time will be avoided in the productive process

Recommended spare parts :

- 1 Timer

This point has to be considered individually in each case,

depending on the working temperature

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