Calderas Baxi Power HT45-150 kW .PDF

7/17/2019 Calderas Baxi Power HT45-150 kW .PDF

1/38135

Solutions for centralized heating systems installations

Technical specications

Dimensions

Diagrams

Burner-exchanger unit

Wiring diagramWiring diagram for connection to an heating system

DHW circuit electric pump connections

Flue pipes (B23)

Dual ue system 45-65 kW

Dual ue system 85-150 kW

Electronics

Programming, setting and digital control

Single installationSchemes for single installation

Cascade installation

Schemes for cascade installation

Hydraulic separators and condensate neutralizer kit

Other accessories

Power HT 45 - 150 kWP.

136

137

138

139

140142

143

144

145

146

147

148

150153

158

164

168

169


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1.450 1.650 1.850 1.1000 1.1200 1.1500

Maximum heating heat input kW 46,4 67 87,2 102,7 123,2 154

Maximum heating heat output 80/60C kW 45 65 85 100 120 150

Maximum heating heat output 50/30C kW 48,7 70,3 91,6 107,8 129,7 162

Minimum heat output 80/60C kW 11,8 13,4 32,2 35,8 39 40,4

Minimum heat output 50/30C kW 12,8 14,5 34,9 38,8 42,1 43,7

Energetic efciency (Dir CE/92/42)

Average efciency (DIN 4702-T8) % 109,8 109,8 109,8 109,8 109,8 109,8

Nominal efciency 80/60C % 97,3 97,3 97,5 97,4 97,4 97,4

Nominal efciency 50/30C % 105,2 105,3 105,1 105 105,3 105,2

Efciency at 30% % 107,6 107,6 107,3 107,4 107,5 107,2

Load losses water side T=20k kPa 25 20 23,54 22,56 22,56 19,61

Minimum ow on the exchanger lt/sec 0,27 0,33 0,52 0,58 0,72 0,91

NOx class (EN 483) 5 5 5 5 5 5

Minimum working temperature C -5 -5 -5 -5 -5 -5

Heating system max pressure bar 4 4 4 4 4 4

Safety valve intervention pressure bar 3 3 3 3 3 3

Regulation of water temperature

in heating circuitC 25/80 25/80 25/80 25/80 25/80 25/80

Primary circuit water ow (T=20C) l/h 1.935 2.795 3.700 4.300 5.200 6.500

Water content lt 5,1 6,5 13,7 21 23,3 25,3

Quantity of condensing lt/h 5,1 7,3 9,6 11,5 13,5 16,9

Flue pipe mm 80 80 100 100 100 100

Flue ducts max length m 30 20 20 20 20 20

Maximum ue mass ow rate kg/s 0,022 0,031 0,041 0,049 0,059 0,073

Minimum ue mass ow rate kg/s 0,006 0,007 0,016 0,018 0,019 0,02

Maximum ue temperature C 72 73 78 80 77 75

Residual ue prevalence Pa 130 120 135 150 115 90

Comburent air-ow at Qn kg/sec 0,022 0,034 0,045 0,055 0,065 0,080

Dimensions (h x w x d) mm 850x450x621 850x450x693 850x450x801 850x450x871 850x450x1024 850x450x1132

Net weight kg 60 68 75 83 95 103

Gas type Natural Gas/CPG Natural Gas/CPG Natural Gas/CPG Natural Gas/CPG Natural Gas/CPG Natural Gas/CPG

Power consumption W 90 110 100 160 135 235

Power consumption in stand-by way W 6,3 6,3 6,3 6,3 6,3 6,3

Power HT 45-150 kWPower HT is the range of high efciency oor standing condensing boilers, heating only with

an output from 45 to 150 kW (80/60C)

The range of boilers is distinguished by high efciency, easiness of use/and installation and a

wide range of accessories for single and cascade installations.

The main element of these condensing boilers is the heat exchanger that has a combustion

chamber and a stainless steel AISI 316L coils hydraulic circuit .

The reduced quantity of water in the exchanger allows a small heat inactivity and so a quick

answer to the changes in the heat needed by the system.


3/38137


DimensionsPower HT

RVA placement

Depth (A) mm

45cm

45cm/2cm

45cm/2cm

The stainless steel surfaces protect the exchanger from corrosion due to the condensation.

The regulation of the various elements of the generator is given to the digital PCB with double micro-processor that allows

a simple and reliable managing of the boiler through a control panel with wide LCD display. It is possible to set heating and

DHW mode daily or weekly, the climatic regulation according to the comfort requirements of the end-user; faults and possibleanomalies are shown.

The electronics of the boiler allow the technician an easy access to regulation parameters to set the boiler in order to optimize

the performances according to the type of installation.


4/38138

FLOW RATE/HEAD CURVE

HEAD

(mH

20)

FLOW RATE (l/h)

EXCHANGER PRESSURE DROPPOWER HT 1.850-1.1000

Exchangerpressuredrop(mH

20)

FLOW RATE l/h

2000

5,5

5,0

4,5

4,0

3,5

3,0

2,5

2,0

1,5

1,0

0,5

3000 4000 5000 6000

85 kW

100 kW

EXCHANGER PRESSURE DROPPOWER HT 1.1200-1.1500


20)

FLOW RATE l/h

112-120 kW

150 kW

30 35 40

Efficiencyoftheboiler%

Return temperature of the system C

EFFICIENCY OF THE BOILER ACCORDING TO THE RETURN TEMPERATURE

30% load100% load

45 50 55 60979899

100101102103104105106107108

30 35 40 45 50 55 60303540

45505560657075

100% load

30% load

Fluestemperature%

Return tem erature of the s stem C

FLUES TEMPERATURE ACCORDING TO THE RETURN TEMPERATURE

EXCHANGER PRESSURE DROP

POWER HT 1.450-1.650


20)

FLOW RATE l/h

45 kW

65 kW

Diagrams

The here below graphics, besides better dening the plan of the heating system, allow to deeply analyze the behaviour of thegenerator in different use conditions.

The load loss of the exchangersdenes the difference of pressure, in mm of water column, between the ow and return

connections of the generator. The fow rate/ head curveexplains the dynamic features of the BAXI circulator used as accessory

in these boilers. The performance curvepresents the changing in the efciency, as ratio between the output and input of the

condensing boiler , according to the return temperature of the boiler.

Finally the last graphic explains the uetemperature trendsof the boiler according to the return temperature.


5/38139


Burner-exchanger unit

The pre mixing air-gas unit, the burner and the primary exchanger are the components that allow these condensing boilers tooffer high performances.

The pre mixing unit is made of the Venturi pipe in the fan inlet and of the mixer that grant constantly to the burner an optimal

air-gas ratio independently from the number of turns of the fan limiting to the minimum the consumptions and ensuring always

the correct combustion (that means reduction of the pollutant emissions).

The stainless steel burner, through the internal spreader and the special micro-perforation of the cylindrical surface, grants a

uniform spread of the air-gas mixture independently from his length.

The primary exchanger, totally made of stainless steel, is built with two cylindrical ue chambers, vertically positioned (burner

chamber and condensation chamber). Inside the cylindrical surface there are stainless steel coils, in which run the water of the

primary circuit. In the upper chamber the warm ues discharge gives heat to the return water of the system, contained in the

coils, provoking the condensation of the ues themselves and giving latent heat to the water, pre-heating it before it enters the

chamber of the burner.

Power HT 85-100

Power HT 120-150

Power HT 45-65

Flue outlet

Flue outlet

Flue outlet

PrimaryexchangerPrimary

exchanger

Primary

exchanger

Condensationchamber

Condensationchamber

Condensationchamber

Chamber ofthe burner



Coils

fan

fan

fan

Coils

Coils

venturi-mixerunit

venturi+mixerunit

venturi-mixerunit

Burner

Burner

Burner


6/38140

Wiring diagram

IX1-01

I

X1-02

I

X2-02

IX2-03

IX2-04IX2-

05I

I

X3-01

IX3-02

IX3-03

IX3-

04I

IX2-01I

X40

X30

X50

IX10-01IX1

0-02

I

X10-03I

X10-04

IX10-05

IX10-06

I

X11

X12

X13

X14

X15

1

2

1

2

1

2

1

2

3

1

1

2

1

2

1

2

1

1

2

3

1

2

12

10

98

76543

2

1

11

6

5

432

1

5

43

2

1

4

32

1

3

2

1

1

2

1

2

1

2

1

2

1

2

1

2

4

5

2

1

N L

N L

ab

ab

MAININPUT

FUSE

MAINSPOWER230V-50Hz

MAINSPOWER

TERMINALBOARD

DOMESTICHOTWATER

THANKSENSOR

g

g

COM

NOgg

LN

IGNITION

ELECTRODE

REMOTECONTROLLER

CONNECTION

ROOMTHERMO

STAT

SAFETYSHUT-D

OWN

OUTDOORSEN

SOR

SAFETY

THERMOSTAT

FLAMESENSING

ELECTRODE

12 34 56 78 910

PROGRAMMABLE

OUTPUT230V

INTERFACEBUS

FORBOILERS

IN

CASCADE

CLIP-INMO

DULE

TOCONTRO

LTHE

MIXINGZ

ONE

DISPLAY

CENTRALHEATING

SYSTEMPUMP

CONNECTIONPOINTS

17

16

15

14

13

12

11

FUMES

THERMOSTAT

NTCDELIVERY

HEATINGSENSOR

NTCRETURN

HEATINGSENSOR

IGNTER

HYDRAULIC

PRESSURE

SENSOR

DOMESTICHOT

WATERPUMP

CONNECTIONPOINTS

FAN

b

brbk

br

br

b

br

br

b

b

y/g

b

brb

br

b

b

b

bbr

b

bb

kbkr

r

g

gbrbr

b

y/g

bk

br

bbr

b

br

br

br

b

b

C

M

GASVALVE

V1V2

INOUT

MIN

rr

nn

y/g

y/g y

/g

y/g

G/V

Power HT 1.450 - 1.650 - 1.850 - 1.1000The picture explains the wiring diagram of the PCB of the boiler. Sensors and functional components of the generator are

controlled by the PCB to which they are connected through the internal connectors shown in the picture.

Other 3 connectors reachable from outside the PCB are available to check service devices and regulation of the system (pumps,

outdoor sensor, room thermostat etc) .

Colourofthe

cables:

C=

lightblue

M=

brown

N=

black

R=

red

G/V=

yellow/green

B=

white


7/38141


Wiring diagram

IX1-01

I

X1-02

I

X2-02

IX2-03

IX2-04IX2-05I

IX3-01

IX3-02

IX3

-03

IX3-04I

IX2-01I

X40

X30

X50

IX10-01I

X10-02IX10-03IX10-04IX10-05IX10-06

I

X11

X12

X13

X14

X15

1

2

1

2

1

2

1

2

3

1

1

2

1

2

12

1

1

2

3

1

2

12

109876543

21

11

6

5432

1

5

432

1

4

32

1

3

2

1

1

2

1

2

1

2

1

2

1

2

1

2

IGNITION

ELECTRODE

4

5

2

1N

L

N L

ab

ab

MAININPUT

FUSE

230V-50Hz

br

-brow

n

bk

-black

b

-blue

r

-red

g

-green

g/y-gree

n/yellow

w

-white

DOMESTICHOTWATER

TANKSENSOR

g

g

ggg

y/g

COM

NO

g

gg

LN

MG/V

C

REMOTECONTROLLER

CONNECTION

ROOMTHERMOSTAT

SAFETYSHUT-DOWN

CENTRALHEATING

TEMPERATURESENSOR

OUTSIDESENSOR

SAFETY

THERMOSTAT

FLAMESENSING

ELECTRODE

SPARK

GENERATOR

12 34 56 78 910

PROGRAMMABLE

OUTPUT

INTERFACEBUS

FORBO

ILERSIN

CASCADE

CLIP-INMODULE

TOCONTROLTHE

MIXINGZONE

DISPLAY

17

16

15

14

13

12

11

WATER

PRESSOSTAT

20

19

18

FUMES

THERMOSTAT

FAN

b

brbk

br

br

b

br

br

b

b

y/g

b

brb

br

b

b

bb

br

b

b

bkbkr

r

g

gbrbr

rr

b

y/g

bk

br

bbr

PS

b

br

br

br

b

b

GASVA

LVE2

C

M

GASVALVE1

OUT IN

PILOT

AIRIN

OUT IN

PILOT

AIRIN

y/g

y/g y

/g

y/g

G/V

CENTRALHEATING

SYSTEMPUMP

CONNECTIONPOINTS

DOMESTICHOT

WATERPUMP

CONNECTIONPOINTS

Power HT 1.1200 - 1.500

Colourofthec

ables:

C=

lightblu

e

M=

brown

N=

black

R=

red

G/V=

yellow/green

B=

white


8/38142

High output oor standing boilers can be easily connected to a heating system through the use of terminal boards which areinside the dashboard. The connections with scheme and indications are shown in the picture below. The pumps of the heating

system (P1 and P2) have to be fed following the scheme of the picture interposing between the PCB of the boiler and the pumps

some relays.

It is not necessary to interpose a relay if, to the PCB is wired a single pump.

Wiring diagram for connection to an heating system

P1 = Pump of the hydraulic separator

P2 = Heating system pump

SI = Hydraulic separator (available as accessory)

UR = Heating Unit


9/38143


DHW circuit electric pump connections

The connection of BAXI POWER HT boilers to an indirect cylinder for DHW production can be easily made respecting theconnections indicated in the here below picture.

The pump of the sanitary circuit P3, serving an indirect cylinder, must be linked on the Terminal board M3 of the boiler to the

terminals 13-14. Connecting the pump of the sanitary circuit P3 after an hydraulic separator (as explained in the drawing)

Link the NTC sensor of sanitary priority, supplied as accessory, to the 9-10 terminals of the terminal board M2 after having

removed the actual power resistance.

The sensible element of the NTC sensor has to be put in the relevant well foreseen on the cylinder (see drawing)

The regulation of the DHW temperature and the choice of the sanitary hourly programming can be made directly on the control

panel of the boiler.

DHW TANK CONNECTION DIAGRAM

UB - DHW STORAGE TANKM2 - TERMINAL BOARDSB - DHW PRIORITY SENSORRE - RESISTOR TO BE REMOVED

MR - CENTRAL HEATING FLOWRR - CENTRAL HEATING/DHW RETURNMB - DHW STORAGE TANK FLOWRB - DHW STORAGE TANK RETURNP1 - CENTRAL HEATING PUMPP3 - DHW STORAGE TANK PUMPTS - SAFETY THERMOSTATPS - SAFETY PRESSURE SWITCH


10/38144

Flue pipes

Power HT, open ue range of boilers, are certied for a B23 type of installation. This means that the boiler has to be connectedto a chimney through a stainless steel or plastic pipe with an internal diameter of 80 mm (Power HT 1.450 and Power HT 1.650)

or internal diameter 100 mm (Power HT 1.850-1.1000-1.1200-1.1500). There are available accessories in smooth PP with a

80 mm and 110 mm diameter. To use 110 mm ue accessories made of PP it is necessary to use an adaptor 100/110 available,

as well, as optional.

Important: the horizontal stretches must have a slope towards the boiler of 3.

Chart of the available pressures of the ue pipes

Cascade installation

ModelP available with

Flue pipe B23 100P available with

Single clapet 110/110P available with

Double clapet 110/110

HT 1.450 150 110 (with Clapet 80/110) -

HT 1.650 150 100 (with Clapet 80/110) -HT 1.850 110 110 -

HT 1.1000 150 110 -

HT 1.1200 170 - 80

HT 1.1500 280 - 120

Model Max length of the ue pipe-L- (m)For each 90 bend installed the length

decreases of (m)For each 45 bend installed the length

decreases of (m)

HT 1.450 30 1 0,5

HT 1.650 20 1 0,5HT 1.850 20 1 0,5

HT 1.1000 20 1 0,5

HT 1.1200 20 1 0,5

HT 1.1500 20 1 0,5


11/38145


Dual ue system accessories

Picture Description Code

C53 conversion kit Power HT 45-65 kW LSB 710000100

PP pipe extension 80 L=1000 mm KHG 714059411 .

PP pipe extension 80 L=500 mm KHG 714059910 .

PP pipe extension 80 L=250 mm 710718301 .

PP 90 bend 80 KHG 714059211 .

PP 45 bend 80 KHG 714059311 .

Pipe 80 centring kit (pack of 5) KHG 714037411 .

Clamp centring kit 80 KHG 714106110 .

Pipe 80 supporting bracket (pack of 5) KHG 714037310 .

Internal sealing collar 80 KHG 714018510 .

External sealing collar 80 KHG 714018411 .

Flue terminal 80 LSD 790000150 .

Dual ue terminal 80 KHG 714010410 .

45-65 kW


12/38146

Flexible ducting system accessories


PP exible pipe 80 L= 1,5 m KHG 714105710 .

PP exible pipe 80 L= 20 m KHG 714105810 .

PP tee-joint 80 with supporting bracket andcondensate drainings

KHG 714105910 .

PP 90 bend 80 with supporting bracket (packof 3)

KHG 714106010 .

Flexible centring kit 80 (pack of 3) KHG 714106210 .

Triple lips gaskets kit 80 (pack of 5) KHG 714111210 .

Dual ue system accessories85-150 kW


C53 convension kit Power HT 85-100 kW LSB 710000110

C53 convension kit Power HT 125-150 kW LSB 710000120

PP pipe extension 110 L=1000 mm KUG 714133210 .

PP pipe extension 110 L=500 mm KUG 714133110 .

PP pipe extension 110 L=250 mm 710718501 .

PP reduction kit from 110 to 100 KHW 714096910 .

PP 90 bend 110 KUG 714133010 .

PP 45 bend 110 KUG 714132910 .

45-65 kW


13/38147


Electronics

Settingheatingmode

Information:-DHW temperature-Outside temperature(if connected to theoutdoor sensor)

DHWON-OFF

DHW temperatureregulation

Reset

Programmesaccessand shift

Programmesaccess

and shift

Parametersregulation(decrease value)

Parametersregulation(increase value)

Heatingtemperatureregulation

Power HT range of boilers is provided with a wide digital control panel: dedicated push-buttons for each single function and LCDdisplay combining symbols and codes for information about the boiler working status allowing an easy reading and an immediate

parameter control, programming and setting.

Microprocessor with double CPU: a new technology software for the boiler optimal operation

Built-in daily timer to program both central heating and DHW functions

Programmable pre-heating function of the DHW circuit to reduce waiting times

Digital electronic thermometer

Self-check: detection and description of any possible fault

Built-in climatic regulation (outdoor sensor supplied as optional)

Automatic summer/winter switch with outdoor sensor connected

Cascade system installation option Mixing systems (high and low temperature) installations option

Interface PCB, available as optional, connectable for supplementary functions such as remote control of fault/operation

signals, control of additional pumps, control of boiler output by an external electronic device, etc.


14/38148

Programming, setting and digital control

Picture Model Description Code

Boiler interface for mixing

systems with two different

temperatures zones

Through this accessory the boiler is able tomanage a mixing system with a high and a lowtemperature zone. The accessory managesdirectly the components of the low temperaturecircuit as the mixing valve, the circulating pumpand the NTC sensor, to measure the temperatureof this circuit.

KHG 714077913 .

Boiler control interface 0-10 V

Through this accessory the boiler is able to

change the heat output according to a voltagesignal (010V) coming from a programmablecontroller (PLC) out of the boiler. Then, it ispossible to connect the outdoor lamps to showthe block of the system or functioning.

KHG 714107612 .

Remote controller and climaticregulator

Climatic regulator, directly connectable to theboiler. It allows the data exchange with the PCBof the boiler. Besides the crono-thermostat andclimatic regulator functions it is also a remotecontrol that allows the regulation of parametersof the boiler.

KHG 714072612 .

Outdoor sensor

The outdoor sensor is a temperature indicatorthat communicates to the boiler the outdoortemperature so that the boiler adapts the owtemperature to the comfort set by the end-user.

KHG 714072811 .

Temperature regulator formixing systems, it includes a

temperature sensor

The temperature regulator that allows to controla mixing zone (a low temperature zone). It isable to manage a mixing valve, a pump and a

ow sensor of the controlled zone. Then, it canexchange data with the PCB of the boiler by bus.

KHG 714078112 .

Bus interface for climaticregulators for boilers in cascade

It is an electronic device that allows dataexchange by bus between the electronics and thetemperature regulators.The interface allows also the remote control oftheboiler

KHG 714078013 .

Cascade controller, it includes atemperature sensor

Temperature regulator for cascade systems,allows up to 12 boilers connection ensuringfunctioning and efciency optimization. Itmanages a high temperature zone with its pump,a storage tank with its pump and temperaturesensor.

KHG 714078212 .


15/38149


DimensionsPower HT from 45 to 150 kW

936,5

136,5

800

526

678,5

524

400

800

186,5

850

986,5


16/38150

Single installationwith Power HT boilers from 45 to 150 kW

Safety valve

Non-return valve

Shut-off valve

Boiler-manifold pipe hydraulic connection

Manifold pipes single boiler/last boiler

Second pump hydraulic connection

Return manifold

Flow manifold

Extension vessel hydraulic connection

Shut-off valve


17/38151


Single installation

Manifold pipes single boiler/last boilerPower HT models Code Kit made of:

45-150 kW KHW 714104210 . Flow manifold

Return manifold

Second pump hydraulic connection

Power HT models Code Kit made of:

45-150 kW KHW 714098611 .

2 way shut-off valveUPS32/80 circulating pumpNon-return valveHydraulic joints



45-150 kW KHW 714104311 .

2 way shut-off valve on returnCirculating pump UPS 32/80Non-return valveExtension vessel hydraulic connection3 way shut-off valve on ow


18/38152

Controller - bus interface connection

Bus interface is an electronic device that allows data exchange by bus between the PCB and the temperature regulator.

After removing the cover of the control panel, mount the plate (B) supplied with the bus interface, and so mount the accessory as

well (C). The at cable (A) have to be linked to the connector X40 of the electronics of the boiler. Connect the wiring (respecting

the polarity) between the connector X41 of the bus interface and the connector MB-DB of the controller.

Note: to make the connection easy between the accessory and the PCB, connect the wiring (A) to the PCB before xing the plate

(B). To allow the mounting of the cover of the control panel it is necessary to cut the two plastic pins which are on the cover just

next to the bus interface.

Bus interface for climatic

regulators for boilers in cascade






19/38153


Single installation schemes

Manometro

bar

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

20

40

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

20

40

80100

T E R M O M E T R O

C

60

0

120

20

40

80100

T E R M O M E T R O

C

60

0

120

20

40

80100

T E R M O M E T R O

C

60

0

120

20

40

80100

T E R M O M E T R O

C

QAD

Manometro

mmH2O

mbar

OCI420

2

4

10

7

8

9

10

1

3

5

6

SYSTEMMA

DEOF1HIGHOUTPUTCON

DENSINGBOILERPOWERH

T,1DIRECTHIGHTEMPERA

TURE

CIRCUIT,1LOWT

EMPERATUREMIXING

CIRCUIT,1TANKFORTHESOLARINTEGRATION(OPTIO

N)

1HighoutputfloorstandingcondensingboilerPOWERHT

2Safetydevice

ISPESL(availableasoptional)

3Reductionkit

100/110

4Hydraulicsep

arator

5Outdoorsensor

6Interfaceform

ixingsystemswithtwodifferenttemperatureszones

7Flow/returnse

nsor

8DHWsensor

9Doublecoilstoragetank(DC)forintegrationwithsolarsystems(option)

10Thermostaticmixer


20/38154


DN50

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0 1 0 0

T E R M O M E T R O

C

ECO

QAD

QAD

RVA46

M/B1

MB/DB Y1/Y2

Q2

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

Allo

scar

ico

AlleUtenze

All'impiantodiRiscaldamento

MB-DB

RVA46

M/B1

MB/DB Y1/Y2

Q2

OCI420

Manometro

mmH2O

mbar

7

9

12

13

15

14

2

3 1

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C 6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C 6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C 6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

4

6

8 10

11

5

1Highoutputf

loorstandingcondensingboilerPOWER

HT

2Manifoldpipe

ssingleboiler

3Fumesmanifoldforsingleboiler

4SafetydeviceISPESL(availableasoptional)

5Interfaceformixingsystemswithtwodifferenttempe

ratureszones

6Hydraulicseparator

7PipeintankcylinderUBPT1000

8DHWsensor

9Climaticregu

latorformixedsystem

10Tanksensor

11Circulatinggroup

12Solarcontro

llerECO

13Automatica

ir-vent

14Solarcollec

torsSB25+V

15Collectorss

ensor

SYSTEMM

ADEOF1HIGHOUTPUTCO

NDENSINGBOILERPOWER

HT,

1PIPEINTANKCYLINDE

RFORHEATINGAND

DHW

PRODUCTIONINTEGRATION


21/38155



60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

QAZ21

Manometro

mmH2O

mbar

1

2

4

3

6

7

8

5

1

Highoutpu

tfloorstandingcondensingboilerPOW

ERHT

2

Manifoldpipessingleboiler

3

Fluetubes

forsingleboiler

4

Hydraulicseparator

5

Outdoorse

nsor

6

DHWsens

or

7

Singlecoil

SCtank

8

Safetydev

iceISPESL(availableasoptional)

SYSTEMM

ADEOF1HIGHOUTPUTCO

NDENSINGBOILERPOWER

HT,1HIGHTEMPERATUREDIRECTCIRCUIT,1TANK


22/38156


M a n o m e t r o

b a r

60

0

120

2040

80 1

00

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

20

40

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

60

0

120

2040

80100

T E R M O M E T R O

C

QAZ21

QAD

ECO

Manometro

mmH2O

mbar

AGU

2.

500

2

6

3

5

1

12

13

8

9

10

11

14

4Flat

sola

rcol

lect

ors

Flat

sola

rcol

lect

ors

1HighoutputfloorstandingcondensingboilerPOWERHT

2Manifoldpipessing

leboiler

3Fumesmanifoldforsingleboiler

4Interfaceformixing

systemswithtwodifferent

temperatureszones

5SafetydeviceISPE

SL(availableasoptional)

6Hydraulicseparator

7Outdoorsensor

8DHWsensor

9Solarcirculatinggroup

10SolarcontrollerE

CO

11Doublecoilstorag

etank(DC)

12SolarcollectorsSB25+V

13Collectorssensor

14Tanksensor

SYSTE

MMADEOF1HIGHEFFICIE

NCYCONDENSINGBOILER

POWERHT,1HIGHTEMPER

ATUREDIRECTCIRCUIT,

1MIXI

NGCIRCUIT,1TANKWITHIN

TEGRATIONWITHSOLARSYSTEM


23/38157


450 450 450

2020

936,5

436,5

186,5

800

136,5

Dimensions

The distance between the boilers in cascade varies from 450 mm to 20 mm depending on manifold accessory used.Flow/return manifolds squared 100x100 with anges DN80 PN6


24/38158

with Power HT boilers from 45 to 150 kWCascade installation

Shutter kit with condensing trapFrom 110 to 110

Boiler-manifold pipe hydraulicconnection

Hydraulic connectionfor 2ndpump

Safety valve

Non-return valve

Shut-off valve

Flue pipe kit for two boilersFrom 160 to 200

Flow manifold

Return manifold

Flue pipe kit for the third boilerFrom 160 to 200

Manifold pipes singleboiler/last boiler

Manifold pipesboilers in cascade

3 way shut-offvalve

ReductionFrom 110 to 100


25/38159


Cascade installations

Manifold pipes single boiler/last boilerPower HT models Code Kit made of:

45-150 kW KHW 714104210 . Flow manifold

Return manifold



45-150 kW KHW 714104311 .

2 way shut-off valve om returnCirculating pump UPS 32/80Non-return valveExtension vessel hydraulic connection3 way shut-off valve on ow

Hydraulic connection for 2nd pump


45-150 kW KHW 714098611 .

2 way shut-off valve UPS32/80 circulating pump Non-return valve Hydraulic joints

Manifold pipes boilers in cascade


45-150 kW(45 cm between the boilers)

KHW 714099010 . Flow manifold Return manifold

45-150 kW(2 cm between the boilers)

KHW 714103611 . Flow manifold Return manifold


26/38160

Distance of the manifold from the rst boiler to the vertical chimney: 2 meters

Shutter kit installed in each boiler in cascade

The ue pipes and the connections between the ue manifold of the cascade and the chimney are not supplied by BAXI The manifolds in cascade over 200mm diameter are not supplied by BAXI

The calculation has been made assuming a PP "double wall" ue duct

The chart in the following page indicates the diameters of the flue manifold and of the chimney for various configurations of boi-

lers in cascade and for different heights of the chimney.

2 m

A

B

H

Remarks

Information for the calculation of the diameter of the

ue manifold (A) and the chimney (B)


27/38161


N of boilers

in cascadeHT

1.450

HT

1.650

HT

1.850

HT

1.1000

HT

1.1200

HT

1.1500

2 Nominal outputTotal 80/60 C (kW)

90 130 170 200 240 300

Flue manifold mm (A) 125 125 160 160 160 160

Flue mm (B) -H= 5-10 m 125 125 160 160 160 200

Flue mm (B) -H=10-15 m 125 125 160 160 200 200

Flue mm (B) -H=15-20 m 125 125 160 160 200 200


135 195 255 300 360 450


Flue mm (B) -H= 5-10 m 125 160 160 160 200 200

Flue mm (B) -H=10-15 m 125 160 160 160 200 200

Flue mm (B) -H=15-20 m 125 160 160 160 200 250

4

Nominal output

Total 80/60 C (kW)180 260 340 400 480 600


Flue mm (B) -H= 5-10 m 160 160 160 200 200 250

Flue mm (B) -H=10-15 m 160 160 200 200 200 250

Flue mm (B) -H=15-20 m 160 160 200 200 200 300


225 325 425 500 600 750


Flue mm (B) -H= 5-10 m 160 200 200 200 250 250

Flue mm (B) -H=10-15 m 160 200 200 200 250 300

Flue mm (B) -H=15-20 m 160 200 200 200 250 300

Information for the calculation of the diameterof the flue manifold (A) and the chimney (B)


28/38162

Controller - bus interface connection

Bus interface is an electronic device that allows data exchange by bus between the PCB and the temperature regulator.

After removing the cover of the control panel, mount the plate (B) supplied with the bus interface, and so mount the accessory as

well (C). The at cable (A) have to be linked to the connector X40 of the electronics of the boiler. Connect the wiring (respecting

the polarity) between the connector X41 of the bus interface and the connector MB-DB of the controller.

Note: to make the connection easy between the accessory and the PCB, connect the wiring (A) to the PCB before xing the plate

(B). To allow the mounting of the cover of the control panel it is necessary to cut the two plastic pins which are on the cover just

next to the bus interface.





l

l l




29/38163


Temperature regulator for boilers in cascade

TEMPERATURE

REGULATORFOR BOILERS

IN CASCADE

Pump of the tank

Room thermostat

Return sensor

Flow sensor

BUS INTERFACE FOR

BOILERS IN CASCADE

LINE

ENGINE

Back view

Storage tank sensorPump of the heating

system

Power 230V AC

Temperature regulator for cascade systems, allows up to 12 boilers connection ensuring functioning and

efciency optimization. It manages a high temperature zone and pump, and a storage tank.

It manages in the best way the boilers in cascade caring the modulation of the outputs and turning the

time for switching-on to make the functioning timing of the various boilers in cascade uniform.

The managing has this functioning: in case of need of heat the regulator will switch-on the rst boiler

increasing the power slowly. If the output is still not sufcient to satisfy the need, it will switch the second

boiler on, that together with the rst, will repeat the increase of the output.

The cycle will be repeated for each single new switching-on of the boiler and in case of reduction of the heat load, the cycle will

be made in the opposite way.

The aim is to optimize the functioning of the system. This climatic regulator has the availability to manage 1 zone of the high

temperature system, a pump and DHW. The regulator manages up 12 boilers in cascade, each one supplied with bus interface

for boilers in cascade and 2 mixing zones controllers.N.B. accessory that can be used only with bus interface for boilers in cascade and outdoor sensor.

Supplying: Temperature regulator for boilers in cascade+or/return sensor for boilers in cascade+connectors (KHG 714078212 .)

Connections of the climatic regulator for boilers in cascade


30/38164

Cascade installation schemes

Manometro

mmH2O

mbar

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

QAD

RVA47

M/B70

MB/DB

M/B10

Q1

M/B3

Q3

QAD

OCI420

OCI420

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

6 0

0

1 2 0

2 0 4 0

8 0

1 0 0

TERMOMETRO

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

QAZ21

CONT1

CONT2

CONT1

CONT2

CONT1

CONT2

CONT1

CONT2

CONT1

CONT2

CONT1

CONT2

CONT1

CONT2

CONT1

CONT2

7

2

10

12

13

9

3

6

14

10

1

8

1

1

14

14

14

14

14

14

14

5

4

SYST

EMMADEOF2HIGHOUTPUTCONDENSINGBOILERSP

OWERHT,1HIGHTEMPERA

TUREDIRECTCIRCUIT,

1TAN

KWITHINTEGRATIONWITH

SOLARSYSTEM(OPTION),

BUILT-INHEATBOXESRH+2

C

1HighoutputfloorstandingcondensingboilerPOWE

RHT

2Safetydevice


3Fumesmanifoldtwoboilersincascade

4Shutterkit

5Reductionkit

100/110

6Hydraulicsep

arator

7Outdoorsens

or

8Businterface

forclimaticregulatorsforboilersincascade

9Climaticregu

latorforboilersincascade

10Floworretu

rnsensorforcontrollerforboilers

incascadeandmixingsystem

11DHWsenso

rformixingzones

12Doublecoiltank(DC)forintegrationwith

solarsystem

s(option)

13Thermostaticmixer

14Built-inheat

boxesRH+2C


31/38165



6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

QAD

QAZ21

RVA

47

M/B70

MB/DB

M/B10

Q1

M/B3

Q3

Manometro

mmH2O

mbar

QAD

OCI420

OCI420

1

2

74

3

5

8

10

11

12

6

9

1HighoutputfloorstandingcondensingboilerPO

WERHT

2Manifold

pipestwoboilersincascade

3Fumesm

anifoldtwoboilersincascade

4Shutterk

it

5Hydraulicseparator

6Outdoor

sensor

7Businterfaceforclimaticregulatorsforboilersincascade

8Climatic

regulatorforboilersincascade

9Floworr

eturnsensorforcontrollerforboilersin

cascadeandmixingsystem

10DHWsensorformixingzones

11Double

coiltank(DC)forintegrationwithsolarsystems(option)


SYSTEM

MADEOF2HIGHOUTPUT

CONDENSINGBOILERSPOW

ERHT,1HIGHTEMPERATU

REDIRECTCIRCUIT,

1TANK

WITHINTEGRATIONWITHSOLARSYSTEM(OPTION)


32/38166


Manometro

mmH2O

mbar

M a n o m e t r o

b a r

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

QAD

RVA47

RVA46

M/B70

MB/DB

MB/DB

M/B10

Q1

M/B3

Q3

QAD

M/B1

Q2

Y1/Y2

QAD

OCI420

OCI420

OCI420

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

M a n o m e t r o

b a r

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

QAD

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

T E R M O M E T R O

C

QAZ21

RVA46

M/B1

Q2

Y1/Y2

1

12

12

15

3 5

5

4

5

6

6

6

7

8

9

9

9

2

11

10

11

12

12

13

14

SYSTEM

MADEOF3HIGHOUTPUTC

ONDENSINGBOILERSPOW

ERHT,2HIGHTEMPERATUR

EDIRECTCIRCUITS,

1TANKW

ITHINTEGRATIONWITHSO

LARSYSTEM(OPTION)

1HighoutputfloorstandingcondensingboilerPOWE

RHT

2Safetydevice


3Fumesmanifoldtwoboilersincascade

4Fumesmanifoldforthethirdboiler

5Shutterkit

6Reductionkit

100/110

7Hydraulicsep

arator

8Outdoorsens

or

9Businterface

forclimaticregulatorsforboilersincascade

10Climaticreg

ulatorforboilersincascade

11Climaticregulatorformixingsystem

12Floworretu

rnsensorforcontrollerforboilersinca

scadeandmixingsystem

13DHWsenso

rformixingzones

14Doublecoiltank(DC)forintegrationwithsolarsys

tems(option)

15Thermostaticmixer


33/38167



6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

QAD

RVA47

M/B70

MB/DB

M/B10

Q1

Manometro

bar

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

6 0

0

1 2 0

2 0

4 0

8 0

1 0 0

TERMOMETRO

C

Manometro

bar

Manometro

mmH2O

mbar

QAD

OCI420

OCI420

OCI420

7

1

2

6

3

5

8

4

10

10

10

10

10

10

10

10

11

9

1HighoutputfloorstandingcondensingboilersP

OWERHT

2Manifoldpipestwoboilersincascade

3Fumes

manifoldtwoboilersincascade

4Fumes

manifoldforthethirdboiler

5Shutterkit

6Hydrau

licseparator

7Busint

erfaceforclimaticregulatorsforboilersincascade

8Climaticregulatorforboilersincascade

9Floworreturnsensorforcontrollerforboilersin

cascadeandmixingsystem

10Built-inheatboxesLUNASATRS2Z


SYST

EMMADEOF3HIGHOUTPUTCONDENSINGBOILERSPOWERHT,1HIGHTEMPERATUREDIRECT

CIRCUIT,

BUILT

-INHEATBOXESRS2Z


34/38168

300

811

203

157,5230

330

1069

143

Hydraulic separator HS 8,5 da 8,5m3/h 2 traded jointsWeight Kg 11,8 - Cod. LSD 790000310 .

Hydraulic separator HS 18 da 18m3/h anged joints 65PN 16. Weight Kg 39 - Cod. LSD 790000320 .

Maximum condensate water ow l/h 56

Max potentiality of the boiler kcal/h da 201.000 a 300.000

Max potentiality of the boiler kW 234-349

Maximum working pressure bar 2

Maximum temperature of the water content C Corresponding to the maximumtemperature of the condensate waters

Min/Max room temperature C 5-40

Quantity of the rst charge of product Kg 5

Next recharges Kg 4,5

Dimensions (hxwxd) mm 260x330x225

Neutralizer lter to process the water deriving from the condensation of BAXI condensing boilers in cascade installations Cod.KHG 714125710 . To install the neutralizer kit it is necessary to install Power HT at least at 12 cm from the oor.Recharge for the neutralizer kit (output up to 350 kW) Cod. KHG 714135410 .

For the theoretical explanation of the hydraulic separator see pages from 73 to 77

264,5

450

1279

95



263

450

1279

95

Hydraulic separator

Condensate neutralizer kit


35/38169


Other accessories

Other accessories

Flue accessories for Power HT cascade installation

Flue accessories for Power HT 45-65 kW cascade installation


PP ue pipe kit for two boilers 160 710715201 .


PP ue pipe kit for third boilers 160 710716301 .

PP ue pipe kit for third boilers 200 710716401 .

PP 90 bend 160 KHW 714097810 .

PP 90 bend 200 KHW 714098210 .

PP pipe extension 160 L=1000 KHW 714097710 .

PP pipe extension 200 L=1000 KHW 714098110 .




PP shutter kit 80/110 with condensing trap 710682001 .

PP 90 bend 125 KHG 714094410 .

PP 45 bend 125 (pack of 2) KHG 714094510 .

PP pipe extension 125 L=1000 KHG 714094610 .


36/38170

Other accessoriesFlue accessories for Power HT 85-150 kW cascade installation

Hydraulic accessories

Hydraulic accessories


Manifold pipes single boiler/last boiler KHW 714104210 .

Boiler - manifold pipe hydraulic connection KHW 714104311 .

2ndpump hydraulic connection KHW 714098611 .

Manifold pipes boiler in cascade(45 cm between the boilers)

KHW 714099010 .

Manifold pipes boiler in cascade(2 cm between the boilers)

KHW 714103611 .

for single installation

for cascade installation


PP shutter kit 110/110 with condensing trap 710682101 .

PP reduction kit 110/100 KHW 714096910 .


Manifold pipes single boiler/last boiler KHW 714104210 .

Boiler - manifold pipe hydraulic connection KHW 714104311 .

2nd

pump hydraulic connection KHW 714098611 .


37/38171


Other accessories


Room sensor: it can be installed only withclimatic regulator for mixing system

KHG 714078410 .

Installation box for RVA controllers KHG 714096610 .

Motor for the mixing valve KHG 714078511 .

Mixing valve G1 KHG 714078310 .

Mixing valve G1/2 KHG 714078610 .

Mixing valve G3/4 KHG 714078710 .

Flow/return sensor for controller for boilers in

cascade and mixing system KHG 714078810 .

Flow sensor for clip-in module KHG 714078910 .

Hot water temperature sensor for climaticregulator for boilers in cascade

KHG 714079010 .

Hot water temperature sensor KHG 714076810 .

Thermoregulation


38/38

Documents

Calderas Baxi Power HT45-150 kW .PDF