untitled

xtra

The new Ideal

xtra range of boilers complements the market

leading range of condensing boilers. This new range is offered

in ten models with outputs from 80 to 560kW suitable for floor

standing application in either single or multiple applications.

Like all boilers the

xtra is offered as standard with

the high efficiency operation that you would expect from a fully

condensing boiler range. With non condensing efficiencies of up to

97.7% nett (88% gross cv), and up to 107.5% nett (96.9% gross

cv) at 30% load in condensing mode. The full range meets the

requirements of the latest 2006 Building Regulations (Part L2).

The fully modulating burner operation ensures that the boiler

operates as efficiently as possible throughout its firing cycle even

down to approx 20% (F80 is 30%) of the maximum rating. This

ensures that the boiler is able to match its output to all system

requirements no matter the size.

The full range is built around a solid and reliable cast aluminium

heat exchanger design comprising of several sections dependent

upon boiler size. Burner operation is a pre mix design with air and

gas mixed in the correct proportions and fired through a cylindrical

burner in the upper area of the heat exchanger. Heat is forced down

through the heat exchanger therefore ensuring maximum heat

transfer whilst condensate formed drops into the sump at the base

of the boiler. F320-F560 models comprise of two modules within

the one boiler, operating as previously described. Control of the two

modules operating simultaneously is built in to the boiler.

The sections build from front to back ensuring that all models in the

range have the same width e.g. 600mm (80-280) & 1200 (320-560)

making the full range easily transportable through standard doorways.

(high output models are delivered in suitable packs)

The full range meets and exceeds all current legislation governing

the design, manufacture and safety of heating boilers for

commercial applications. Low NOx emissions are a key factor of the

boiler with Class 5 performance across the range.

Optimum control is achieved at all times through the use of a

microprocessor control readily accessible on the boiler front.

Commissioning and full fault diagnostics are provided whilst remote

Conforms with all relevant
European standards and
requirements

modulation to low outputs for

high operating efficiencies

indication of boiler run and alarm is standard. A wide range of

control options ensures easy application of BMS systems,

sequencing and sensor control.

plus

The

plus offers even greater flexibility of installation and

operation with outputs from 80kW to 280kW in a range of six

compact floor standing boilers and can be installed in multiple

formation to provide even larger outputs if the system requires.

High efficiencies are the norm for boilers and the

plus is up to 96.6% efficient nett (87% gross cv) non-condensing,

and 108.4% nett (97.7% gross cv) at 30% load. Even higher

efficiencies are achieved at lower temperatures. The fully

modulating gas/air design ensures maximum efficiency is

maintained down to as low as 11.6kW output. This class-leading

figure is achieved even with the largest model as the unique

plus design optimises load matching. The robust cast aluminium

heat exchanger comprises of several sections, each flueway or

module has its own burner fan, gas valve, ignition and safety

controls and after all have modulated down to their combined

minimum, modules are switched off to further match a reducing

system load. Wasteful on/off cycling is reduced to the absolute

minimum with the

plus, and a further benefit is that standby

support is built into the design.

plus boilers are designed for ease of installation and the flue

can be positioned to left, right or rear, whilst system and gas

connections can be made to left or right of the boiler. All to ensure

boiler house siting is as simple and as fast as possible.

Naturally the range meets the most stringent European Standards

governing safety and performance and is classified as low NOx

(Class 5). It is also the quietest boiler of its size at less than 50dBA.

The

plus uses advanced microprocessor based controls to

operate all electrical functions and provides full commissioning and

fault diagnostic displays. Furthermore it takes into account each

modules' operating hours and evens out their usage. Further

benefits are that Hours Run Meters and BMS control is built-in as

standard, whilst an outside sensor for weather compensation is

supplied with each boiler.

With the rapid shift evident within the commercial heating market to high efficiency products brought about by the changes to Building

Regulations it is inevitable that manufacturers will have to adapt to meet these challenging times. This demand for higher efficiencies is fully

recognised at Ideal Boilers and the brand is a market leader in this field. In order to meet this ever changing demand we are pleased to

introduce our range of floor standing condensing boilers which we are certain will reinforce our position as market leader.

introduction

Performance Data -

xtra (80 - 280)

Model

120

160

200

240

280

max

82.2

123.4

164.5

207.8

249.4

290.9

Boiler output (condensing)

Btu/h

280,450

421,050

561,250

709,000

850,950

992,550

50/30°C

min

25.8

32.3

47.3

51.6

55.9

Btu/h

88,000

110,200

161,400

176,050

190,750

max

77.9

116.9

155.8

195.4

234.5

273.6

Boiler output (non-condensing)

Btu/h

265,800

398,500

531,600

666,700

800,100

933,500

80/60°C

min

23.3

29.1

43.1

47.0

51.0

Btu/h

79,500

99,300

147,050

160,350

174,000

max

120

160

200

240

280

Boiler input (Nett)

Btu/h

272,950

409,450

545,900

682,400

818,900

955,350

min

Btu/h

81,900

102,350

150,150

163,800

177,400

max

88.8

133.3

177.7

222.1

266.5

310.9

Boiler input (Gross)

Btu/h

303,000

454,800

606,300

757,800

909,300

1,060,800

min

26.6

33.3

48.9

53.3

57.7

Btu/h

90,750

113,600

166,850

181,850

196,850

Gas rate

Natural Gas

8.1

12.1

16.1

20.1

24.2

28.2

286

427

569

710

855

996

Max flue resistance

100

150

Approx flue gas volume

Natural Gas

121

182

242

302

363

423

(non condensing) max rate

/min

4,270

6,410

8,550

10,690

12,820

14,960

NOx ( at 0% O

)

mg/KWh

ppm

Seasonal boiler efficiency (2006 Building Regulations Part L2)

95.1

95.2

Note: Gas rates are calculated using a C.V. of 37.8 MJ/m

gross (34 MJ/m

nett) for Natural Gas.

General Data -

xtra (80 - 280)

Model

120

160

200

240

280

Flow connection

BSP

R2"

Return connection

BSP

R2"

Maximum static water head

200

Maximum pressure

Bar

psi

Gas inlet connection

BSP

R1"

Pressure required at the boiler inlet

mbar

15.0

for the rated input

in w.g.

6.0

Electricity supply

230V / 50Hz

Nominal flue size

150

200

Nominal air inlet size

110

Condensate drain

21.5

Water content

11.0

14.3

17.5

18.4

24.0

27.2

gal

2.4

3.2

3.9

4.1

5.3

6.0

Weight

132

150

168

198

215

233

291

331

370

437

474

514

Power consumption

250

400

xtra technical data

Performance Data -

xtra (320 - 560)

Model

320

400

480

560

max

329.0

415.6

498.8

581.8

Boiler output (condensing)

Btu/h

1,122,500

1,418,000

1,701,900

1,985,100

50/30°C

min

75.3

107.5

116.1

118.3

Btu/h

256,900

366,800

396,100

403,600

max

311.6

390.8

469

547.2

Boiler output (non-condensing)

Btu/h

1,063,200

1,333,400

1,600,200

1,867,000

80/60°C

min

67.8

97.7

105.5

107.7

Btu/h

231,300

333,400

360,000

367,500

max

320

400

480

560

Boiler input (Nett)

Btu/h

1,091,800

1,364,800

1,637,800

1,910,700

min

100

108

110

Btu/h

238,800

341,200

368,500

375,300

max

355.4

444.2

533

621.8

Boiler input (Gross)

Btu/h

1,212,600

1,515,600

1,818,600

2,121,600

min

77.6

110.9

119.8

122

Btu/h

264,800

378,400

408,800

416,300

Gas rate

Natural Gas

32.2

40.2

48.4

56.4

1138

1420

1710

1992

Max flue resistance

145

Approx flue gas volume

Natural Gas

484

604

726

846

(non condensing) max rate

/min

17,100

21,380

25,640

29,920

NOx ( at 0% O

)

mg/KWh

ppm

Seasonal boiler efficiency (2006 Building Regulations Part L2)

95.1

95.2

General Data -

xtra (320 - 560)

Model

320

400

480

560

Flow connection

DN flange

80*

Return connection

DN flange

80*

Maximum static water head

200

Maximum pressure

Bar

psi

Gas inlet connection

BSP

R2*

Pressure required at the boiler inlet

mbar

15.0

for the rated input

in w.g.

6.0

Electricity supply

230V / 50Hz

Nominal flue size

200

250

Nominal air inlet size

2 x 110

Condensate drain

2 x 21.5

Water content

35.0

36.8

48.0

54.4

gal

7.8

8.2

10.6

12.0

Weight (exc. headers)

336

396

430

466

740

874

948

1028

Power consumption

800

*Flow, return and gas connection sizes shown are for the optional header kit. If header kit not used: Flow & Return connections are 2 x R2. Gas connection are 2 x R1.

xtra technical data

xtra Range Performance

The Ideal

xtra range offers high operating efficiencies,

together with the lowest possible emissions, and is certified to

comply with the Gas Appliance Directive (90/396) and the Boiler

Efficiency Directive (92/42), the European Directives governing

safety and performance of gas boilers ensuring high quality

performance.

The design of the boiler ensures high efficiencies at both full

and part loads to meet the new `2006 Building Regulations Part L2'

conservation of fuel and power. Approved efficiencies are up to

97.7% at 80°C flow based on nett calorific value of fuel (88%

gross) at full load. At 30% part load the efficiencies are up to

107.5% nett (96.9% gross).

xtra Range Electrical Controls

The boilers incorporate an advanced microprocessor based

control system which operates all electrical functions of the boiler

including ignition, flame detection, flow/return temperature sensors

and output modulation. In addition the microprocessor displays

boiler status and a fault diagnosis program.

Volt free contacts providing remote indication of boiler run and

alarm conditions are fitted as standard.

External control of the boiler can be via simple mains units,

whilst a range of optional Ideal controls can also be provided (see

page 11).

F320 - F560 models - These models include 0-10v BMS

control as standard in addition of the boiler run and alarm.

Boiler

Range

Certificate No.

Notified Body

Reference

xtra

F80 - 280

63BR3123

Gastec NL

0063

F320 - F560

63BR3123

Gastec NL

0063

xtra Range Boiler Operation

xtra

On a call for heat, air is drawn into the boiler variable speed

fan. The fan inlet incorporates a special mixing arrangement for gas

supplied from the gas valve. The gas/air mixture is automatically

ignited at low rate at the burner via the ignition/detection electrode

and ignition proved by the electrode. The flue gases pass downwards

through the heat exchanger and via the sump and flue outlet to

atmosphere. A plume of vapour will be visible at the terminal due to

the low exit temperature.

The boiler modulates its output according to demand via the

flow/return sensors and any external controls. The fan speed and gas

flow are adjusted under this electronic control to provide the correct

mixture and output. This maintains high efficiency part loads with

modulation levels of the order of approx 20% (F80 is 30%).

F320 - F560 models - The two modules operate together as

described above. A small delay (i.e. 20 seconds) is built-in for

ignition between the first and second modules lighting.

In order to give you assurance and peace of mind a Certification of

Compliance to the 2006 Building Regulations Part L2 can be

obtained from the commercial heating department.

xtra product specification

xtra Quality

As with all Ideal boilers, the

xtra boilers are engineered

to the highest quality standards. Ideal Boilers products meet or

exceed the requirements of all relevant standards. Before dispatch

each boiler is fired and fully tested. The control valves are also

adjusted to give the correct gas flow rate. Ideal Boilers are

recognised as a World Class Manufacturer.

Environmental

Management System

ISO 14001: 2004

assurance of quality

BS EN ISO 9001: 2000

xtra Range Packing

The Ideal

xtra F80 - F280 is dispatched from works as

one pack as follows.

xtra F80 - F280 comprises:

· Assembled boiler

xtra F320 - F560 comprises:

· 1 master module packaged with jacket package on pallet side.

(readily removed to allow passage through standard doors)

· 1 slave module

· 1 flue header (optional separate pack ordered with boiler).

· An optional header pack controling flow/return and gas headers

available. An optional RS air duct connector is available.

A full commissioning service is available at an extra charge.

xtra System Application

Ideal

xtra boilers are designed for central heating of

large domestic and commercial premises and also for supplying

domestic hot water via a calorifier or plate heat exchanger. They are

suitable for fully pumped, open vented or pressurised systems and

can be connected to heating and/or domestic hot water systems.

They are not suitable for direct hot water supply or gravity

heating/hot water systems.

xtra

Maximum static head:

61 metres

(200 feet)

Maximum working pressure:

6 bar

(87psi)

Maximum design flow temperature is 82°C (180F)

(This is adjustable to 90°C if required at the control panel).

Pump overrun is provided as standard, and a period of 5 minutes

must be allowed for in system design.

Frost protection is built into the boiler control, if the boiler sensor

falls below 7°C, this will result in the appliance firing.

This will protect the boiler only, not exposed system elements.

Model

120

160

200

240

280

Hydraulic resistance at 20°C

100

110

125

140

150

in. w.g.

Normal water flow rate temperature difference

l/s

1.78

2.68

3.57

4.51

5.42

6.32

11°K (20°F)

/hr

6.41

9.65

12.85

16.24

19.51

22.75

Minimum water flow rate temperature difference

l/s

0.98

1.47

1.96

2.48

2.98

3.47

20°K (36°F)

/hr

3.53

5.3

7.06

8.93

10.73

12.49

Model

320

400

480

560

Hydraulic resistance at 20°C

100

105

in. w.g.

Normal water flow rate temperature difference

l/s

7.14

9.02

10.83

12.63

11°K (20°F)

/hr

25.7

32.47

38.99

45.47

Minimum water flow rate temperature difference

l/s

3.93

4.96

5.96

6.95

20°K (36°F)

/hr

14.15

17.86

21.46

25.02

xtra Range Minimum Water Flow

System design must allow for adequate internal circulation and

sufficient heat release from the boiler body whenever the burner is

firing or during pump overrun. (See flow rate table below for details).

Additionally, the system must be controlled so that part of the load is

available during the pump overrun period to dissipate heat.

Pump Choice: The choice of pump should take into account the

hydraulic resistance given in the table below.

Control box

Switch

Pressure gauge

Casing front panel

Casing top panel

Casing side panel

Fan

Gas valve

11. Venturi

12. Control module

14. Alarm / relays board

19. Union gas cock

20. Leveling feet

22. Heat exchanger

24. Heatglass

25. Air inlet

27. Burner hood

33. Air pressure switch

37. Relay

38. Cable conduit

47. Ignition electrode

49. Manifold - flow

xtra Boiler Construction (80 - 280)

The construction of the Ideal

xtra sectional heat exchanger

design is of cast aluminium. A single fan is used to mix gas and air into

a cylindrical burner situated in the upper part of the heat exchanger.

Hot flue gases are forced down through the heat exchanger and

the resulting condensate is collected in a sump situated at the base

of the boiler.

Ideal

xtra boilers will produce condensate whenever the

temperature of the return water from the system is below

approximately 55°C (the dew point of the combustion products).

Natural Gas condensate is mildly acidic with a pH value of

about 4 and therefore corrosion resistant materials must be used in

the construction of the condensate drain. Standard PVC pipe is

suitable for this purpose and should be connected to the plastic

drain fitted on the boiler.

xtra F80 - F280

A condensate trap is supplied for fitting to the boiler and the

drain may be led directly into the normal drainage system. The pipe

should be installed with an adequate slope (eg 1 in 20) and

consideration should be given to frost protection..

xtra F320 - F560

A condensate trap is supplied for fitting to each module, and

the drain may be led directly into the normal drainage system. Slope

and frost protection should be followed as above.

Note: Drawing shows 80 - 280 models

xtra Range Condensate Drain

xtra product specification

Modulating Sequence
Control Kit

xtra Boiler Dimensions (80 - 280)

Model

120

160

200

240

280

`A' Dimension

796

1048

`B' Dimension

888

1165

`C' Dimension

1024

1327

Front

600

Back from rear of jacket

700

Boiler Clearances

LH Side

450

RH Side

150

Top

500

xtra Range Optional Kits

Programmable Room
Thermostat Kit

The

xtra boiler range can be supplied with a wide range

of optional extras that complement the performance of the boiler.

These are as follows:

xtra

Control kits

F80 - F20

F320 - F560

Modulating sequence control for

controlling multiple boiler installations

Programmable room thermostat

Tank sensor kit

BMS control kit (0-10v)

STD

Outside sensor kit

Room sensor kit

Sequencer DHW sensor kit

Control interface kit

STD

System kits

(F320 - F560 only)

Header kit (flow/return & gas headers)

RS air duct connector (combined air inlet)

320 & 400 models only

xtra dimensional data

Performance Data -

plus (80 - 280)

Model

F80

F120

F160

F200

F240

F280

max

83.9

125.9

167.8

209.8

251.8

293.7

Boiler output (condensing)

Btu/h

286,300

429,600

572,550

715,850

859,200

1,002,150

Mean 50/30°C

min

13.0

Btu/h

44,350

max

77.3

116.0

154.6

193.2

231.8

270.5

Boiler output (non-condensing)

Btu/h

263,750

395,800

545,950

659,250

818,900

923,000

Mean 80/60°C

min

11.6

Btu/h

39,600

Nett

120

160

200

240

280

Boiler input maximum rate

Btu/h

272,950

409,450

545,950

682,450

818,900

955,400

Gross

88.8

133.2

177.6

222.0

266.4

310.8

Btu/h

303,000

454,500

606,000

757,500

909,000

1,060,500

Nett

Boiler input minimum rate

Btu/h

40,950

Gross

13.3

Btu/h

45,400

Gas rate

Natural Gas

8.42

12.63

16.83

21.04

25.26

29.46

297

446

594

743

892

1040

Max flue resistance

100

Approx flue gas volume

Natural Gas

130

196

261

326

392

457

(non condensing) max rate

/min

4,590

6,920

9,220

11,510

13,840

16,140

NOx emissions

mg / kW / hr

< 62

ppm (0% O

)

< 35

Seasonal boiler efficiency

94.7

(2006 Building Regulations Part L2)

Note: Gas rates are calculated using a C.V. of 37.8 MJ/m

gross (34 MJ/m

nett) for Natural Gas.

General Data -

plus (80 - 280)

Model

F80

F120

F160

F200

F240

F280

Flow connection

BSP

R2"

Return connection

BSP

R2"

Maximum static water head

200

Maximum pressure

Bar

psi

Gas inlet connection

BSP

Pressure required at the boiler inlet

mbar

15.0

for the rated input (Natural Gas)

in. w.g.

6.0

Electricity supply

230V 50Hz

Nominal flue size

150

200

Nominal air inlet size

150

Condensate drain

Water content

10.1

14.2

18.3

22.4

26.5

30.6

gal

2.22

3.13

4.03

4.93

5.84

6.74

Weight

125

170

215

260

305

345

276

375

474

573

673

761

Power consumption

175

250

325

400

475

550

plus technical data

Ideal

plus boilers will produce condensate whenever the

temperature of the return water from the system is below

approximately 55°C (the dew point of the combustion products).

Natural Gas condensate is mildly acidic with a pH value of

about 4 and therefore corrosion resistant materials must be used in

the construction of the condensate drain. Standard PVC pipe is

suitable for this purpose and should be connected to the plastic

drain fitted on the boiler.

plus

Pipework is supplied for fitting beneath the boiler and includes

a filling point for initial charging of a condensate siphon (not

supplied). The pipe should be installed with an adequate slope (eg

1 in 50) and consideration should be given to frost protection.

plus Condensate Drain

plus Flue Systems

To ensure safe and satisfactory operation, the boiler must be

connected to a chimney system capable at all times of adequately

evacuating the combustion products (see performance data table on

page 14 for approximate volumes).

Ideal

plus boilers are suitable for use in both room

sealed and open flue fan assisted operation. Connections for

combustion air inlet and flue products discharge are located on the

top of the appliance (

plus: separate vertical flue outlet to

left, right or rear, air inlet at left or right).

The boiler is suitable for use in either single or multiple flue

configurations and can be fitted with a wide variety of flue systems.

Horizontal flue runs MUST be inclined at 2.5° to the horizontal

in order that any condensate formed can be discharged through the

boiler.

All joints or connections in the flue system must be impervious

to condensate leakage and also any low points in the flue system

should be drained using pipe of material resistant to condensate

corrosion.

The flue duct termination point must be positioned so that it

will not be affected by adverse wind conditions and be free from any

obstructions. Note: A vapour plume will be visible at the terminal.

Therefore where possible terminal positions which could cause

problems due to plumeing should be avoided.

NO additional diverter, stabiliser, or draught break should be

installed in the chimney system without prior consultation with Ideal

Stelrad Group.

Flues and terminal positions should be designed with strict

regard to the requirements of BS 5440: Part 1, BS 6644, IGE

UP/10 and the Building Regulations Part J as appropriate.

Particular attention should be paid to these for multiple boiler

installations and if required, the Clean Air Act.

Proprietary flue systems are available for use with this range. A

pressure of 100Pa is available at the flue outlet.

plus Condensate Drain

plus Performance

The Ideal

plus range offers high operating efficiencies,

together with the lowest possible emissions, and is certified to

comply with the Gas Appliance Directive (90/396) and the Boiler

Efficiency Directive (92/42), the European Directives governing

safety and performance of gas boilers ensuring high quality

performance.

The design of the boiler ensures high efficiencies at both full

and part loads to meet the new `2006 Building Regulations Part L2'

conservation of fuel and power. Approved efficiencies are up to 98%

at 80°C flow based on nett calorific value of fuel (88.5% gross) at

full load. At 30% part load the efficiencies exceed 108% nett

(97.3% gross).

plus Electrical Controls

The boilers incorporate an advanced microprocessor based

control system which operates all electrical functions of the boiler

including ignition, flame detection, flow/return temperature sensors

and output modulation. In addition the microprocessor displays

boiler status and a fault diagnosis program.

Boiler

Range

Certificate No.

Notified Body

Reference

plus

F80 - 280

49BM3615

AFNOR, Paris

0049

plus Boiler Operation

plus

When the boiler receives a call for heat, the boiler control

Modular Boiler Drive (MBD) calculates the necessary output

according to the difference between the set flow temperature (or

compensated flow temperature for a CH call when using an outside

sensor) and the boiler modules' combined flow temperature. The

first module fan operates and the gas/air mixture is automatically

ignited below the burner via a spark electrode and proved by a

detection electrode. Ignition occurs in 5 seconds and once detected

the module starts operating. Subsequently, additional modules will

fire to provide the load required.

The boiler principle method of operation is to run as many

modules simultaneously, at the lowest possible load, for maximum

efficiency e.g.

If an F160 with 160kW max. output is only requested to

provide 72kW.

72 / 4 = 18kW per module

Therefore, the boiler operates all modules at the reduced rate of

18kW. If the required load is less than the min. 12kW per module,

then one module after the other will automatically shut down and

the load shared by the remaining modules. The modules with the

lowest number of hours run are automatically chosen to satisfy the

demand.

In order to give you assurance and peace of mind a Certification of

Compliance to the 2006 Building Regulations Part L2 can be

obtained from the commercial heating department.

plus Optional Extra Kits

Outside sensor kit

Tank sensor kit

Remote indication kit

Hours run meter(s)

BMS (0-10v) kit

Air inlet blanking plate kit

*Provided as standard

plus

The

plus boiler range comes with a host of options

designed to give greater flexibility and control to your heating system.

plus product specification

plus Quality

As with all Ideal boilers, the

plus boilers are engineered

to the highest quality standards. Ideal Boilers products meet or

exceed the requirements of all relevant standards. Before dispatch

each boiler is fired and fully tested. The control valves are also

adjusted to give the correct gas flow rate. Ideal Boilers are

recognised as a World Class Manufacturer.

plus Packing

The Ideal

plus is dispatched from works in separate

packs as follows:

plus contains:

Assembled boiler body

Casing pack

Condensate pipe & fixings

Flue manifold, socket & gasket

Outside sensor pack

A full commissioning service is available at an extra charge.

plus System Application

Ideal

plus boilers are designed for central heating of

large domestic and commercial premises and also for supplying

domestic hot water via a calorifier or plate heat exchanger. They are

suitable for fully pumped, open vented or pressurised systems and

can be connected to heating and/or domestic hot water systems.

They are not suitable for direct hot water supply or gravity

heating/hot water systems.

plus

Maximum static head:

61 metres

(200 feet)

Maximum working pressure:

6 bar

(87psi)

Maximum design flow temperature is 82°C (180F)

(This is adjustable to 90°C if required at the control panel).

Pump overrun is provided as standard, and a period of 5 minutes

must be allowed for in system design.

Frost protection is built into the boiler control, if the boiler sensor

falls below 7°C, this will result in the appliance firing.

This will protect the boiler only, not exposed system elements.

Model

120

160

200

240

280

Hydraulic resistance at 20°C

100

130

180

225

275

in. w.g.

110

Normal water flow rate temperature difference

l/s

1.79

2.68

3.58

4.47

5.37

6.26

11°K (20°F)

6.44

9.65

12.9

16.1

19.3

22.5

Minimum water flow rate temperature difference

l/s

0.98

1.47

1.97

2.46

2.95

3.44

20°K (36°F)

3.53

5.3

7.09

8.8

10.6

12.38

plus Minimum Water Flow

System design must allow for adequate internal circulation and

sufficient heat release from the boiler body whenever the burner is

firing or during pump overrun. (See flow rate table below for details).

Additionally, the system must be controlled so that part of the load is

available during the pump overrun period to dissipate heat.

Pump Choice: The choice of pump should take into account

hydraulic resistance given in the table below.

Environmental

Management System

ISO 14001: 2004

assurance of quality

BS EN ISO 9001: 2000

Water Treatment

Corrosion will always occur within a heating/hot water system to

a greater or lesser degree irrespective of water characteristics,

unless the initial fill water from the mains is treated. For these

reasons Ideal Boilers Solutions strongly recommends that when

necessary the system be thoroughly cleaned prior to the use of a

stable inhibitor which does not require continual topping up to

combat the effects of hardness, salts and corrosion on the heat

exchanger and its associated systems.

The Ideal

xtra & plus boilers have an aluminium

alloy heat exchanger. Therefore it is important that if water

treatment is used it is suitable for the material of the heat

exchanger. The ONLY water treatments approved are `Fernox Copal'

and `Sentinel X 100'. Current suitability should be confirmed with

the manufacturer direct: Sentinel Performance Solutions, The Heath

Business and Technical Park, Runcorn, Cheshire Telephone: 0800

389 4670 or Fernox Manufacturing Co. Ltd., Cookson Electronics,

Forsyth Road, Sheerwater, Woking, Surrey GU21 5RZ Telephone:

01799 521133 for technical information.

Any other treatment used will render the guarantee of Ideal

Stelrad Group for this product INVALID. The use of artificially

softened water is NOT permitted.

Gas

xtra & plus

Natural Gas models: If there is any doubt concerning the

capacity of the gas meter, available gas pressure, adequacy of

existing pipes or the size required for new service pipes, contact the

Gas Region for advice. Installation pipework should be fitted and

tested for gas soundness in accordance with BS 6891. The local

Gas Region must be consulted if a gas pressure booster is needed.

Ventilation

Open flued application

Safe, efficient, and trouble-free operation of conventionally

flued gas boilers is vitally dependent on the provision of an

adequate supply of fresh air to the room in which the appliance is

installed. The

plus range is also fitted with air inlet filters for

such applications.

Ventilation by grilles communicating directly with the outside

air is required at both high and low levels. The minimum free areas

of these grilles must be according to the scale below. The use of an

extractor fan in the same room as the boiler (or in an adjacent room

in communication) can, in certain conditions, adversely affect the

safe operation of the boiler. Where such a fan is already fitted, or if

an extractor fan is likely to be installed at a later date, then the

advice of the gas supplier should be obtained.

Total gross input

Position of

Air vent areas* (cm

)

rating of boilers

air vents

(air direct from outside)

70kW to 1.8MW

High level

70kW to 1.8MW

Low level

Balanced flue applications

Room sealed installations require no air from the boiler house*

for combustion as this is drawn direct from the outside atmosphere.

However, air may be required to ventilate the boiler house and

remove any excess heat generated by the boiler (2

free area per

kW nett heat input at both high and low level BS 6644).

xtra & plus boilers have an air inlet connection

which may be used with proprietary ducting if required. A separate

flue connection is still required.

plus boilers are fitted with air inlet filters. Air inlet

blanking plate kits are required when

plus boilers are

installed in room sealed applications.

BS 6644 - Inputs greater than 70kW (nett)

Boiler room

Enclosure

Boiler room

Enclosure

*Required area is cm

per kW of nett input. Note: where a boiler

installation is to operate in summer months (e.g. DHW) additional
ventilation requirements are stated. If operating for more than 50%
of time refer to BS 6644.

range system requirements

Open Systems

The system should be vented directly off the boiler flow pipe, as

close to the boiler as possible. The cold feed entry should be

inverted and MUST be positioned between the pump and the vent,

and not more than 150mm (6") away from the vent connection.

There should be a minimum height, 500mm (20") of open vent

above the cistern water level. The vertical distance between the

highest point of the system and the feed/expansion cistern water

level MUST not be less than 3 metres.

The information provided is based on the following

assumptions:

The boiler is at the highest point of the circulation system.

Systems designed to raise above the flow tappings will, of course,

automatically require a minimum static head higher than shown.

The position of the open vent/safety pipe above the expansion

cistern water level is given as a guide only. The final position will

depend upon particular characteristics of the system. Pumping over

of water into the expansion cistern should be avoided.

Cold Feed/Open Vent

The independent cold feed and the open vent must comply with

BS 6644 and be of the following minimum size:

Boiler output (kW)

Cold feed

Open vent

60 - 150

151 - 300

301 - 600

1" (25mm)

" (32mm)

" (38mm)

" (32mm)

" (38mm)

2" (50mm)

Sealed (Pressurised) Systems

xtra

Working pressure 6 bar (87psi) maximum.

plus

Working pressure 6 bar (87psi) maximum.

Particular reference should be made to BS 6644: Section 2;

Subsection 11, Guidance note PM5 "Automatically controlled steam

and hot water boilers" published by the Health and Safety Executive

and Water Regulations Guide.

The information and guidance given below is not intended to

override any requirements of either of the above publications or the

requirements of the Local Authority, gas or water undertakings.

In general, commercial closed pressurised systems are provided

with either manual or automatic water make up.

In both instances it will be necessary to fit automatic controls

intended to protect the boiler circulating system and ancillary

equipment by shutting down the boiler plant if a potentially

hazardous situation should arise.

Examples of such situations are low water level and operating

pressure or excessive pressure within the system. Depending on

circumstances, controls will need to be either manually or

automatically reset. In the event of shut down, both visual and

audible alarms may be necessary.

Pressure vessels used must comply with BS 4814 and must

be sized on the basis of the total system volume and initial

charge pressure.

Initial minimum charge pressure should not be less than 0.5

bar (7.2psi) and must take account of static head and specification

of the pressurising equipment. The maximum water temperatures

permissible at the point of minimum pressure in the system is

specified in Guidance Note PM5.

When make up water is not provided automatically it will be

necessary to fit controls which shut down the plant in the event of

the maximum system pressure approaching to within 0.35 bar

(5psi) of the safety valve setting.

Other British Standards applicable to commercial sealed

systems are:

BS 6880: Part 2

BS 1212

BS 6281: Part 1

BS 6282: Part 1

BS 6283: Part 4

plus only: For head heights less than 8m the pump must be

fitted on the return. This diagram does not show safety valves, water flow
switches etc. necessary for the safe operation of the system.

range system requirements

Installation

For safety, a competent CORGI (Council for the Registration of

Gas Installers) registered installer must fit this appliance. CORGI

requires its members to work to satisfactory standards.

Boiler installation should comply with relevant British Standard

Specifications, Codes of Practice, and current Building Regulations,

together with any special regional requirements of the Local

Authorities, Gas Supplier, and Insurance Company, and in

particular:

BS 6891 Low Pressure Installation Pipes, BS 6644 Installation

of Gas Fired Boilers, BS 6880 Part 1-3 Central Heating by Low

Pressure Hot Water, CP 342.2 Centralised Hot Water Supply,

IGE/UP/10 Installation of Gas Appliances in Industrial &

Commercial Premises, Part 1: Flued appliances.

All electrical wiring must comply with lEE Regulations.

Manufacturer's notes must not be taken as overriding statutory

obligations.

Minimum clearances from walls or other fixed objects to allow

for installation, maintenance, and the free access of combustion air

are shown in the boiler clearance diagram.

System Design

The efficiency of this range of boilers is higher than

conventional boilers because of the increased heat exchange area.

At return temperatures of 55°C and below, the differences

become more marked because the water in the flue gases starts to

condense releasing its latent heat.

In general, the lower the return temperature, the better the

efficiency.

In new systems it is best to design for the lowest flow and

return temperatures that are practical (subject to the lower limit

mentioned above). For optimum operation it is advised that the

system be designed on a temperature differential of 20°C.

100 150 200

600

800

1000

1500

3500

136

340 511 682

2047

2729

3412

5118

11942

Boiler output

Concord CXS/H

Concord CXSi/H

Concord ES/H

Concord Modular

Concord Super Series 4

Buccaneer GTE

Falcon GTE

Harrier GTE

Viceroy GT

Viscount GTE

Vanguard L

Btu/h (000)

Concord CXA/H

40-120

80-560

110-180

140-380

80-720

50-600

45-80

Concord Super Plus

200-600

21-39

36-102

105-330

300-780

754-1450

130-3500

Atmospheric Boilers

High Efficiency Boilers

Pressure Jet Boilers

Ideal Stelrad Group, PO Box 103, National Avenue, Kingston upon Hull HU5 4JN.
www.idealcommercialboilers.com www.stelrad.com email: commercial_heating@idealboilers.com

imax/3/07

Issued subject to standard conditions

Assurance of quality
BS EN ISO 9001: 2000

Contact Numbers

Sales

Tel:

01482 498690

Fax:

01482 498621

Technical

Tel:

01482 498376

Fax:

01482 498621

Training

Tel:

01482 498432

Fax:

01482 498605

Approval
These appliances are certified to
G.A.D. 90/396 and B.E.D. 92/42
safety and performance Directives
for gas boilers.

Ideal Boilers pursues a policy of
continuous improvement in design
and performance of its products
and reserves the right to vary
specification without notice.
Statutory rights of the consumer
are not affected.

Condensing Boilers

GT Condenser

180-990

Concord CXC

48-116

The Ideal Commercial Range

icos HE

plus

xtra

80-280

30-36