WARM-WATER BOILERS

WARM-WATER BOILERS

PB-V

Three-pass warm-water and hot-water boilers combusting gaseous and liquid fuels
In compliance with the requirements of standard ČSN EN 12 953 and directive EC 97/23

Design
The boiler body consists of a cylindrical shell, two reinforced bottoms, a symmetrically bedded boiler flue, a water cooled inflective chamber and a ring nest of stay tubes of the second and third pass. The front inflective chamber is not cooled. It is closed with a door enabling cleaning of the generating surfaces. Boiler venting is provided by a flue gas collector in the rear part of the boiler. Flue gas discharge is realized via a chimney neck with an upper or rear outlet.


Equipment
The boiler body is equipped with a relief valve and draining. The outlet and reverse necks are fitted with adaptors with lugs for installation of measurement and regulation instruments. Beneath the return water inlet neck there is an injector increasing the output temperature.
Hot-water boilers are additionally equipped with a pressure limiter. Warm-water boilers are additionally equipped with a temperature limiter, namely up to 110°C.
Manholes together with inspection holes enable inner revision of the boiler.


Efficiency
The heat contained in flue gasses leaving the boiler can be transferred to return water in the exhaust-heat exchanger. Energy gained this way increases the boiler efficiency of up to 7% reducing thus the fuel consumption.


Economizer
It supplements the basic design of the PB-V and PB-H boilers. It can be integrated into the flue gas collector or autonomously placed at the flue gas outlet.
The economizer provides a highly efficient heat transfer - the counter-flow principle. It consists of nests of finned or plain tubes in the flue gas channel with admission in the water chambers.


Flue gas exchanger connection
With regard to the boiler output and the design efficiency two basic types of the exchanger connection are distinguished.
Version with a full flow - all the return water flows through the exchanger, where it is preheated.

Version with a partial flow - only a part of the return water (10 - 30%) flows through the exchanger. Before the boiler inlet the rest of the return water mixes with heated water from the exchanger. This version is mainly used for boilers with a higher flow rate of recirculation water.


Modifications
The design of the boilers enables using an identical construction for both warm-water and hot-water boilers, namely up to pressure of 16 bars.

technické parametry

BASIC TECHNICAL SPECIFICATION

  • Output 760 ÷ 25 000 kW
  • Operation overpressure 6 ÷ 25 bar(g)
  • Warm-water version
  • In compliance with technical requirements ČSN EN 12953

FUEL

  • Natural gas
  • Propane, propane-butane
  • Low calorific power gasses - biogas
  • Oil fuels

ADVANTAGES

  1. High lifetime
  2. Economical operation
  3. Combustion of different types of fuel
  4. Low combustion area load
  5. Large-capacity boiler
  6. Design customization
  7. High-quality warranty and post-warranty service
  8. Boilers in connection with low-emission burners meet the legal emission limits for gaseous and liquid fuels

BASIC CONNECTION DIAGRAM WITH FULL AND PARTIAL FLOW FOR BOILER TYPES PB-V AND PB-H

1) Boiler
2) Burner
3) Economizer
4) Base
5) Boiler flue
6) Flue gas outlet
7) Fuel supply
8) Sight glass into the flue
9) Return branch
10) Output branch
11) Shorting circuit
12) Partial flow via economizer
13) Shutting flap
14) Check valve
15) Damper
16) Relief valve
17) Economizer relief valve
18) Shorting pump
19) Economizer circuit pump
20) Filter
21) Draining, blown-down
22) Water incursion check
23) Emergency thermostat
24) Manostat
25) Temperature sensor
26) Manometer
27) Thermometer
28) Condensing loop
29) Neutralization box

BASIC TECHNICAL DATA

Boiler type

Maximum
output

Pressure
loss
flue gas side

Indicative
boiler length *
(A)

Indicative
boiler width
(B)

Indicative
boiler height
(C)

Boiler weight
without water

Service 

weight

[kW]

[Pa]

[mm]

[mm]

[mm]

[kg]

[kg]

PB-V760

760

520

3 300

1 510

1 790

3030

4900

PB-V1000

1 000

580

3 860

1 580

1 860

3750

6220

PB-V1200

1 200

560

3 960

1 850

1 860

3890

6360

PB-V1600

1 600

620

4 070

1 800

2 080

4510

7910

PB-V2000

2 000

710

4 370

1 900

2 215

5360

9610

PV-V2500

2 500

680

4 570

1 960

2 275

6000

10630

PB-V3000

3 000

750

5 010

2 100

2 500

7110

13260

PB-V4000

4 000

820

5 400

2 150

2 550

8310

14860

PB-V5000

5 000

840

6 150

2 230

2 630

10100

18400

PB-V6000

6 000

890

6 550

2 400

2 800

12710

23830

PB-V8000

8 000

910

6 950

2 570

2 975

15700

28480

PB-V10000

10 000

1 100

7 350

2 750

3 190

17830

33740

PB-V12000

12 000

1 250

7 825

2 850

3 260

20610

38870

PB-V14000

14 000

1 500

**

PB-V16000

16 000

1 650

**

PB-V20000

20 000

1 800

**

PB-V25000

25 000

2 000

**

* without burner
** up to the pressure of up to 13 bar(g) the dimensions are identical. Dimensions for higher pressures on request.
Changes reserved!

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