1

ZEUS Superior kWWall-mounted boilers with built-in storage tank

1 FEATURES

Wall-mounted, fan assisted sealed chamber for heating and the production of domestic hot water with 60 litre storage tank. Nominal heat output of 24 kW (20,640 kcal/h), 28 kW (24,080 kcal/h) or 31.7 kW (27,250 kcal/h).The boiler classification varies according to the type of installation.OUTDOOR INSTALLATION(in a partially protected area): Appliance with direct air intake - if installed using a relevant exhaust terminal and compulsory upper cover kit option, also eliminating the upper cap of the sealed chamber. C12/ C32 appliance - if installed using the vertical or horizontal concentric kits, without obligation to use the upper covering kit.INDOOR INSTALLATION:Type C12/ C32/ C42/ C52/ C82 appliance - if installed using the vertical or horizontal concentric kits of the separator kits Ø 80/80.The boiler is composed of:• mainmultigas11rampair intakeburner(mod.24kW),13ramps

(mod. 28 kW) or 15 ramps (mod. 32 kW) in stainless steel with ignition and detection electrodes;

• electricdoubleshuttergasvalvewithincorporatedgascoil;• highperformancemaincoppergas/waterexchanger,composedoffour

pipes connected in series inserted into a lamellar battery protected by an anti-corrosive alloy;

• steel plate combustion chamber insulated internallywith ceramicfibres;

• stainless steel plate combustion chamberwith self-adapting fan depending on the extension of fume extraction with fumes flow meter to verify correct operation of the fan and the flue gas/air extraction unit;

• stainlesssteel60litrestoragetank,flangedandinsulatedusingself-extinguishing polystyrene. It is equipped with a stainless steel water-water exchanger wound in double concentric coil and is equipped with a draining valve. Domestic water circuit expansion vessel with 3.5 bar pre-load;

• hydraulicgroupcomposedofanelectric3-wayvalve,anadjustablespeedcirculationpumpwithincorporatedairseparatingdevice,adjustableby-pass, absolute pressure switch for the primary circuit, system draining valve, system filling valve;

• 10litre(real7.1)systemexpansionvesselwith1.0barpre-loadandmanometer, 3 bar primary circuit safety valve and 8 bar storage tank safety valve;

• over-heatingsafetythermostat;• control panel with Stand-by/On function, operating mode button

(Summer/Winter), domestic water precedence temporary inhibition button, Reset/exit from programming menu button, programming menu entry button/data confirmation, heating temperature selector button, domestic hot water temperature selector button;

• microprocessorcircuitboardwith2sensorcontinualflamemodulation(domestic hot water and heating) with P.I.D. control, with range of modulation:

- ZEUS 24 kW from 24 to 9.3 kW (from 20,640 to 8,000 kcal/h), - ZEUS 28 kW from 28 a 11.8 kW (from 24,080 to 10,148 kcal/

h), - ZEUS 32 kW from 31.7 a 12.5 kW (from 27,250 to 10,750 kcal/

h);• self-diagnosissystemwithstatusandanomalydisplayonback-litdigital

screen;• setting of boiler operation parameters using buttons and selector

switches with status and anomaly display on back-lit digital screen;• ignitiondelayinheatingphase,anti-freezeprotectionsystem(to-5°C),

pump anti-blocking function, post-operating fan function, chimney sweep function, circulation pump operating mode selection; preparation fortheconnectionofSuperCAR,CAR,chronothermostat,externalprobe and the control unit for zone-based systems (all optional);

• electronicignitionwithionisationcontrol;• IPX5Delectricalprotectionlevel.Supplied as standard with points for combustion analysis, lower protective grid,connectiongroupwithdepth-adjustablefittingsandgasandcolddomestic water shut-off valves.

CEmarking.The following models are available:• ZEUS Superior 24 kW code 3.018419• ZEUS Superior 28 kW code 3.018420• ZEUS Superior 32 kW code 3.018421

New range of wall-mounted, fan assisted sealed chamber boilers with 60 litre stainless steel storage tank available in three versions with nominal heat output of 24 kW, 28 kW and 32 kW. The production of hot water makes use of the initial storage tank and the continuous service, making maximum boiler power available to the domestic water. The ZEUS Superior kW series is an excellent solution in all installations that require the use of services at the same time. These boilers are also characterised by the high circulation available in the primary circuit (see graphics on page 4-5). The ZEUS Superior kW also distinguishes itself for the possibility of couplingtotheexclusiveSuperCARandtheexternalprobe(both optional) which allow to manage, control and program the boiler at a distance with extreme simplicity, optimising operation using climatic thermoregulation. The boilers are in fact type-approved also for installation outside of the building (with the aid of a relevant upper over kit) in a partially protected area(anti-freezeprotectionupto-5°C).

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ZEUS Superior kW

2 MAIN COMPONENTS

KEY: 1 - Filling valve 2 - Draining valve 3 - Three-way valve (motorized) 4 - Gas valve 5 - System pressure switch 6 - Boiler pump 7 - Automaticventvalve 8 - Flue flow meter 9 - Primary heat exchanger 10 - Fan 11 - Samplepoint(airA)-(fumesF) 12 - System expansion vessel

13 - D.h.w. probe 14 - D.h.w. expansion vessel 15 - Stainless steel boiler 16 - 3 bar safety valve 17 - 8 bar safety valve 18 - Storage tank draining valve 19 - Sealed chamber 20 - Flue hood 21 - Safety thermostat 22 - Flow probe 23 - Combustionchamber 24 - Ignition and detection electrodes 25 - Burner 26 - Adjustableby-pass

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ZEUS Superior kW

3 MAIN DIMENSIONS

3.1 ZEUS Superior kW CONNECTIONS

CasingupperlineB

A

Model

ZEUS Superior kW

Height mm

900

Width mm

600

Depth mm

466

Ø intake/exhaust mm100/60

B A

Model

ZEUS Superior kW

Flow M

3/4"

ReturnR

3/4"

Hot OutletU

1/2"

Cold InletE

1/2"

GasG

1/2"

Circulat.RC(optional)

1/2"

Expansion vesselLitres

10 (real 7.1)

A = intake/exhaustB = intake

Distance between casing upper line andconcentric pipe axis Ø 60/100: 75 mm

Distance between casing upper line and separator bend axis Ø 80/80: A = 115 mm; B = 95 mm

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ZEUS Superior kW

4 CIRCULATION PUMP HEAD AND FLOW RATE GRAPH

The “ZEUS Superior kW” series boilers are supplied with a three speed electric regulator. The circulation pump is already equipped with condenser.

The “ZEUS Superior kW” series boilers are supplied with an adjustableby-pass.Theadjustmentoftheby-passiscalibratedin the factory according to curve B.Theadjustmentcanbemodified by acting on the screw on the by-pass unit.

A:Headavailabletothesystematmaximumspeedwithby-passexcluded(adjustmentscrewcompletelytight).B:Headavailabletothesystematmaximumspeedwithfactoryadjustment(screwtightenedby1.5revswithrespecttothe

completelylooseadjustingscrew).C:Headavailabletothesystematmaximumspeedwithby-passcompletelyopen(adjustingscrewcompletelyloose).

GRUNDFOS UPS 15-50 AO HB

4.1 ZEUS Superior 24 kW CIRCULATION PUMP

GRUNDFOS UPS 15-60 AO HB

4.2 ZEUS Superior 28 kW CIRCULATION PUMP

A

Flow rate l/h

C

B

Hea

d (m

H2O

)

Hea

d (k

Pa)

Flow rate l/h

A

C

B

Hea

d (k

Pa)

Hea

d (m

H2O

)

5

ZEUS Superior kW

GRUNDFOS UPS 15-70 AO HB

A

Flow rate l/h

C

B

4.3 ZEUS Superior 32 kW CIRCULATION PUMPH

ead

(kPa

)

A:Headavailabletothesystematmaximumspeedwithby-passexcluded(adjustmentscrewcompletelytight).B:Headavailabletothesystematmaximumspeedwithfactoryadjustment(screwtightenedby1.5revswithrespectto

thecompletelylooseadjustingscrew).C:Headavailabletothesystematmaximumspeedwithby-passcompletelyopen(adjustingscrewcompletelyloose).

Hea

d (m

H2O

)

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ZEUS Superior kW

KEY: A4 - Display board B1 - Flow probe B2 - Domestic water probe B4 - External probe (optional) B7 - Flue flow meter CAR - ComandoAmicoRemoto remote control (optional) E1 - Ignition electrode E2 - Detection electrode E4 - Safety thermostat F1 - Phase fuse F2 - Neutral fuse M1 - Boiler pump

M20 - Fan M30 - Three-way valve (motorized) S5 - System pressure switch S20 - Room thermstat (optional)SuperCAR- SuperComandoAmicoRemoto remote control(optional) T1 - Ignition transformer T2 - Boiler board transformer U1 - Rectifier inside the gas valve connector (only

present on Honeywell valves) X40 - Roomthermostatjumper Y1 - Gas valve Y2 - Gas valve modulation coil

5 WIRING DIAGRAM

ROOM THERMOSTAT OR REMOTE CONTROLTheComandoAmicoRemoto remote control (CAR) orthe SuperComandoAmicoRemoto remote control,mustbeconnectedtoclamps42and43ofconnectorX15ontheintegrated circuit board respecting polarity and eliminating jumperX40.

The boiler is prepared for the application of the Room Ther-mostat(S20).ConnecttheRoomThermostattoclamps40and41eliminatingjumperX40.The eventual external probe (B4) must be connected to clamps 38and39ofconnectorX15ontheintegratedcircuitboard.

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ZEUS Superior kW

6 HYDRAULIC DIAGRAM

KEY: 1 - Gas valve 2 - Stainless steel coil for storage

tank 3 - Magnesium anode 4 - Stainless steel storage tank 5 - Flue flow meter 6 - Burner 7 - Combustionchamber 8 - Primary heat exchanger 9 - Flue hood 10 - Fan 11 - Sealed chamber 12 - Flow probe 13 - Safety thermostat

14 - Automaticventvalve 15 - System expansion vessel 16 - Boiler pump 17 - Adjustableby-pass 18 - System pressure switch 19 - System draining valve 20 - Three-way valve (motorized) 21 - D.h.w. probe 22 - 3 bar safety valve 23 - System filling valve 24 - D.h.w. expansion vessel 25 - 8 bar safety valve 26 - One-way cold water inlet valve 27 - Storage tank draining valve

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ZEUS Superior kW

7 ZEUS Superior kW TECHNICAL DATA

Maximum nominal heat input kW (kcal/h) 25.6 (22,028) 29.8 (25,644) 33.6 (28,897)Maximum useful heat output kW (kcal/h) 24.0 (20,640) 28.0 (24,080) 31.7 (27,250)Minimum nominal heat input kW (kcal/h) 10.6 (9,122) 13.3 (11,402) 14.2 (12,188)Minimum useful heat output kW (kcal/h) 9.3 (8,000) 11.8 (10,148) 12.5 (10,750)Efficiency at 100% heat output % 93.7 93.9 94.3Efficiency at 30% heat output load % 90.3 91.2 90.8Central Heating circuit Adjustablecentralheatingtemperature °C 35-85 35-85 35-85Max.systemoperatingtemperature °C 90 90 90Max. system operating pressure bar 3 3 3Nom./(real) cap. of system expansion vessel litres 10 / (7.1) 10 / (7.1) 10 / (7.1)Preload pressure of system expansion vessel bar 1.0 1.0 1.0Availableheadwith1000l/hflowrate kPa(mH2O) 32.90 (3.3) 37.26 (3.8) 38.70 (4.0)Domestic hot water circuit Useful heat output for d.h.w. production kW (kcal/h) 24,0 (20.640) 28,0 (24.080) 31,7 (27.250)D.h.w.temperatureadjustablerange °C 20-60 20-60 20-60D.h.w. max working pressure bar 10 10 10Flowrateincontinuousservice(∆t30°C) litres/min 11.3 13.7 15.3Flowratein10minutes(∆t30°C) litres/min 15.3 16.6 18,.9

Storage tank losses kW 0.168 0.162 --Nom./(real) cap. of d.h.w. expansion vessel litres 2.0 (1.2) 2.0 (1.2) 2.0 (1.2)Pre-load pressure of d.h.w. expansion vessel bar 3.5 3.5 3.5Gas supply METHANE(G20) MIN-MAX mbar 2.18-12.02 2.24-11.41 2.19-10.87 nozzles n°-ømm 11x1.35 13x1.35 15x1.35LPG(G30) MIN-MAX mbar 5.47-28.86 5.50-28.79 5.28-26.84 nozzles n°-ømm 11x0.79 13x0.79 15x0.79LPG(G31) MIN-MAX mbar 6.96-36.88 7.23-36.66 6.95-33.77 nozzles n°-ømm 11x0.79 13x0.79 15x0.79

Supply voltage V/Hz 230 - 50 230 - 50 230 - 50Nominalpowerabsorption A 0.68 0.70 0.87Installed electric power W 135 140 165Power absorbed by fan W 33 37 48Power absorbed by pump W 85 90 99

Electrical isulation degree IP X5D X5D X5DBoiler water content litres 3.0 3.5 4.0

Stainless steel storage tank capacity kg 60 60 60Empty boiler weight kg 66.1 68.0 70.2

ZEUS 32ZEUS 28ZEUS 24

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ZEUS Superior kW

8 ZEUS Superior 24 kW COMBUSTION CHARACTERISTICS

Methane (G20) LPG (G30) LPG (G31)

Combustionefficiencyat100%nominalheatoutput % 94.1 94.1 94.1

Combustionefficiencyminheatoutput % 88.5 88.5 88.5

Flue losses with burner on (100% nom. heat output) % 5.9 5.9 5.9

Flue losses with burner on (min heat output) % 11.5 11.5 11.5

Flue losses with burner off % 0.05 0.05 0.05

Casinglosseswithburneroff % 0.61 0.61 0.61

Casinglosseswithburneron(100%nom.heatoutput) % 0.40 0.40 0.40

Casinglosseswithburneron(minheatoutput) % 0.8 0.8 0.8

Flue temperature Maximum Heat Input °C 112 114 111

Flue temperature Minimum Heat Input °C 96 100 98

Flue flow rate at Maximum Heat Input kg/h 49 49 51

Flue flow rate at Minimum Heat Input kg/h 50 48 49

CO2 at Maximum Heat Input % 7.50 8.70 8.30

CO2 at Minimum Heat Input % 2.90 3.50 3.40

COatMaximumHeatInput mg/kWh 78 91 65

COatMinimumHeatInput mg/kWh 99 120 119

NOx at Maximum Heat Input mg/kWh 243 333 322

NOx at Minimum Heat Input mg/kWh 132 149 155

WeightedCO mg/kWh 101 - -

Weighted NOx mg/kWh 139 - -

NOx class - 3 3 3

Thegasflowratesrefertothenetheatingvalueatthetemperatureof15°Candatthepressureof1013mbar.Thefluegastemperaturevaluesrefertotheairintaketemperatureof15°C.

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ZEUS Superior kW

8.1 ZEUS Superior 28 kW COMBUSTION CHARACTERISTICS

Methane (G20) LPG (G30) LPG(G31)

Combustionefficiencyat100%nominalheatoutput % 94.5 94.5 94.5

Combustionefficiencyminheatoutput % 91.2 91.2 91.2

Flue losses with burner on (100% nom. heat output) % 5.5 5.5 5.5

Flue losses with burner on (min heat output) % 8.8 8.8 8.8

Flue losses with burner off % 0.01 0.01 0.01

Casinglosseswithburneroff % 0.62 0.62 0.62

Casinglosseswithburneron(100%nom.heatoutput) % 0.60 0.60 0.60

Casinglosseswithburneron(minheatoutput) % 2.2 2.2 2.2

Flue temperature Maximum Heat Input °C 106 111 108

Flue temperature Minimum Heat Input °C 78 81 80

Flue flow rate at Maximum Heat Input kg/h 57 55 57

Flue flow rate at Minimum Heat Input kg/h 61 59 60

CO2 at Maximum Heat Input % 7.50 9.10 8.70

CO2 at Minimum Heat Input % 2.94 3.55 3.46

COatMaximumHeatInput mg/kWh 104 185 95

COatMinimumHeatInput mg/kWh 111 107 104

NOx at Maximum Heat Input mg/kWh 217 330 299

NOx at Minimum Heat Input mg/kWh 136 159 156

WeightedCO mg/kWh 106 - -

Weighted NOx mg/kWh 130 - -

NOx class - 3 3 3

Thegasflowratesrefertothenetheatingvalueatthetemperatureof15°Candatthepressureof1013mbar.Thefluegastemperaturevaluesrefertotheairintaketemperatureof15°C.

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ZEUS Superior kW

8.2 ZEUS Superior 32 kW COMBUSTION CHARACTERISTICS

Methane (G20) LPG (G30) LPG (G31)

Combustionefficiencyat100%nominalheatoutput % 93.8 93.8 93.8

Combustionefficiencyminheatoutput % 88.9 88.9 88.9

Flue losses with burner on (100% nom. heat output) % 5.8 5.8 5.8

Flue losses with burner on (min heat output) % 11.1 11.1 11.1

Flue losses with burner off % 0.01 0.01 0.01

Casinglosseswithburneroff % 0.60 0.60 0.,60

Casinglosseswithburneron(100%nom.heatoutput) % 0.40 0.40 0.40

Casinglosseswithburneron(minheatoutput) % 0.70 0.70 0.70

Flue temperature Maximum Heat Input °C 116 117 115

Flue temperature Minimum Heat Input °C 94 95 91

Flue flow rate at Maximum Heat Input kg/h 66 66 68

Flue flow rate at Minimum Heat Input kg/h 66 66 69

CO2 at Maximum Heat Input % 7.4 8.5 8.2

CO2 at Minimum Heat Input % 2.9 3.4 3.2

COatMaximumHeatInput mg/kWh 62 52 32

COatMinimumHeatInput mg/kWh 95 26 21

NOx at Maximum Heat Input mg/kWh 210 274 297

NOx at Minimum Heat Input mg/kWh 115 151 244

WeightedCO mg/kWh 100 - -

Weighted NOx mg/kWh 146 - -

NOx class - 3 3 3

Thegasflowratesrefertothenetheatingvalueatthetemperatureof15°Candatthepressureof1013mbar.Thefluegastemperaturevaluesrefertotheairintaketemperatureof15°C.

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ZEUS Superior kW

9 OPTIONALS

Comando Amico Remoto remote controlcode 3.011236

Super Comando Amico Remoto remote controlcode 3.016577

Weekly digital chronothermostatcode 3.014438

Radio-chronothermostat (wireless)code 3.014439

External probecode 3.014083

Remote controlcode 3.013305

Configurable relay interface kit code 3.015350 Universal connection kitcode 3.011667

Domestic water circulation kit (including pump)(only indoors) code 3.015380

Upper covering kit code 3.018247

Polyphosphate dispenser kit (only indoors) code 3.011675

GSM remote control kit code 3.017182

Shut off valve kit with filter code 3.015854

Shut off valve kit code 3.4297

Domestic water circulation probe kit code 3.018287 Control unit kit for zone-based systems code 3.011668

Disconnector kit for water mains code 3.018461 Additional system expansion vessel kit code 3.018433

The boiler is ready for DIM (multi-system distribution manifold) connection, available in 5 built-in kits.