Remeha P SERIES Brochure

P Series

Pressure Jet Range

REMEHA PRESSURE JET RANGE

Gas, Oil and Dual fuel pressure
jet three-pass cast iron sectional
boiler with low NOx emissions

PRESSURE JET OUTPUTS
P 320: 70-330 kW
P 420: 300-780 kW
P 520: 696-1450 kW

Introduction

The Remeha P Series Range
is a family of advanced
technology boilers, giving
value for money when used
on both commercial and
industrial applications.
All the models are suitable
for gas, oil, dual fuel and
bio-fuel. They are compact
in size yet designed to be
extremely powerful, meeting
all requirements on both
full and part load giving
high operating efficiency
and low emissions.

Boiler Description

The Remeha Pressure Jet Range are high efficiency
pressurised hot water boilers suitable for use with natural
gas, light oil and bio fuel, by means of a pressure jet burner.

Nominal output of the P 320 boilers is between 70 and
330 kW, the P 420 boilers is between 300 and 780 kW and
the P 520 boilers is between 754 and 1450 kW.

The main boiler casing is steel, with a powder coated
enamel finish complete with high quality 80-100mm thick
glass wool insulation. The front door is suitable for left or
right opening allowing easy access for service operations.
The heat exchanger is manufactured from corrosion­resistant ‘Eutectic’ cast iron.

The instrument panel contains all the necessary control and
measuring instruments required to control the boiler with
the external connections on a terminal strip. The capillaries
and sensor wires of the control panel are placed in the
instrument pockets fitted at the front of the boiler.

For the discharge of flue gases, chimney draught is not
required. Tests have shown that very good combustion
results are obtained with zero draught at the boiler outlet.

The boilers are suitable for open and sealed systems up to
a maximum pressure of 6 bar and a minimum pressure of

0.8 bar. The boiler is suitable for installation in basement
or rooftop plant rooms.

Contents

page

Introduction 2

Boiler Description 2

Typical Boiler Construction 3

Advantages at a Glance 3

P 320 Dimensions
& Technical Data 4-5

P 420 Dimensions
& Technical Data 6-7

P 520 Dimensions
& Technical Data 8-9

Application Information 10

The sizes of boilers parts are such that they can enter the
plant room through a normal entrance. The casing and
instrument panel are packed separately.

The boiler block consists of cast iron sections which are
assembled by means of tapered nipples and ceramic rope.

The boilers are designed on the basis of the triple
pass principle for maximum efficiency and a generously
sized combustion chamber for minimising NOx production.

In principle, all EC approved pressure jet burners are
suitable subject to boiler capacity and construction.

The boilers meet the requirements of the EC regulations in
the following directives:

- 97/23/Sound engineering (article 3.3)

- 90/396/Gas appliance directive

- 73/23/Electrical low voltage directive

- 89/336/E.M.C. directive

- 92/42/Efficiency directive

Classification type for evacuation of the combustion
products: B23.

Instrument Panels 10

External Connections 10

Water Treatment 11

2

Typical Boiler Construction

Advantages
at a glance

Remeha P 320

6

5

Remeha P 420

8

6

5

4

Remeha P 520

7

• Boiler body with 3-pass flueways
design with a large combustion

8

1

chamber and horizontal flue
passes with fins. The heat
transfer is enhanced by the

2

3

fins and the cast iron baffles

• A high combustion efficiency

• A low noise level operation

• Optimal combustion with low

4

NOx and CO2 emissions

• Easy adaptation to traditional

burners, as well as new burners
with low NOx emissions

7

1

• Hinged burner / cleaning door
(right hand side or left hand side)

• Eutectic cast iron boiler body

2

3

provides exceptional resistance
to temperature variations,
thermal shocks and corrosion

• Safe low modulated temperature

operation down to 40°C

• Reinforced fibreglass wool

insulation (100 mm) and double
insulation of the boiler front
which minimises heat loss
and allows reduced stand-by
consumption and improved
thermal efficiency

7

6

5

4

1 Boiler body with pass flue ways
2 Large-sized combustion chamber
3 Complete insulated boiler body

with fibreglass wool, 100 mm thick
4 Ceramic fibre insulated burner door
5 Hinged burner door fitted

(right hand side or left hand side)

1

3

8

6 Flame observation window
7 Control panel designed to enable easy

wiring connections

8 Eutectic cast iron body, thermal shock

and corrosion resistant, allowing low
modulated temperature operation and
complete stop between two heating periods

• Internal electrical duct for
wiring connections

• Easy installation for existing or
new boiler houses

• The assembly of the sectional

2

boiler body can be carried out
anywhere even in boiler houses
with difficult access

• A maximum working pressure
of 6 bar allows for most types
of installation

• Volt free wiring connections

for external run and lock-out
indication

3

Remeha P 320

Dimensions

All measurements in mm

Front View

Rear ViewSide View

Dimensions of the Sections

Remeha P 320

Number of sections 4 5 6 7 8 9

L (mm) 991 1151 1311 1471 1631 1791
P (mm) 490 650 810 970 1130 1290
ØR (mm) 180 180 180 200 200 200
Flow and Return connection sizes 2.5” 2.5” 2.5” 2.5” 2.5” 2.5”

4