Immergas Zeus Superior Manuel utilisateur

ZEUS

Superior kW

Wall-hung, room sealed boilers

with storage tank

ZEUS Superior kW

STZSkW ed 12/07 ZEUS Superior kW

Technical Documentation Technical Documentation

ZEUS Superior kW

Wall-mounted boiler with storage tank with fan

assisted sealed chamber

ZEUS Superior 24 kW

ZEUS Superior 28 kW

ZEUS Superior 32 kW

General features.

ZEUS Superior kW is a wall-mounted fan assisted generator

with sealed chamber (type C) for the heating and production

of domestic hot water with storage tank.

e boiler is type approved for installation outside of the

building in a partially protected place.

N.B.: A partially protected place is one in which the appliance

is not exposed to the direct action of the weather (rain, snow,

hail, etc..).

e boiler can also be installed in B22 conguration using the

relevant kit (optional).

It is equipped with a stainless steel storage tank coil with total

capacity of 60 litres and a standard 2 litre domestic hot water

expansion vessel.

e ZEUS Superior kW series boilers are available with useful

heat output of 24 kW (20,640 kcal/h), 28 kW (24,080 kcal/h)

and 31.7 kW (27,250 kcal/h) with useful eciency exceeding

90%.

Adjustment and control are managed by an integrated P.C.B.

with microprocessor with continuous ame modulation by

means of two sensors (domestic hot water and heating).

e new electronics allow the connection of the appliance

to the CAR and to the Super CAR; both allow remote ma-

nagement and control of the boiler with extreme simplicity.

Moreover, the Super CAR allows the display of the relative

humidity of the room and the envisioned weather.

Using the Super CAR it is possible to indierently change

some settings of the boiler control panel and the Super CAR

control panel, such as: Summer Winter selection, domestic

water set-point, domestic water comfort status, Reset.

e boiler has a standard anti-freeze device that protects it to

a minimum temperature of -5°C (optional to -15°C).

e hydraulic circuit is provided with a copper water-

gas heat exchanger, which is characterised for the high

circulation available in the primary circuit and uses the new

hydraulic unit in composite material.

e circulation pump, the electric three-way valve and the

hydraulic circuit control devices are housed on this unit

(absolute system pressure switch, 3 bar safety valve, system

adjustable by-pass, etc...).

e intake of combustion air inside the sealed chamber and

the discarge of ue are ensured by a fan, ues functioning is

contolled by ow meter.

e boiler operating parameters are set using the buttons and

knobs while the status display, the functioning mode and the

malfunctions, takes place using a back-lit digital display.

STZSkW ed 12/07 ZEUS Superior kW

Technical DocumentationTechnical Documentation

Main dimensions and connections.

Key:

G - Gas supply

R - C.H. return

M - C.H. ow

RC - D.H.W. re-circulation (option)

AC - D.H.W. ow

AF - Domestic cold water inlet

V - Power supply connection

Height

(mm)

Width

(mm)

Depth

(mm)

900 600 466

ATTACHMENTS

GAS SYSTEM DOMESTIC

WATER

G R M AC AF

1/2” 3/4” 3/4” 1/2” 1/2”

STZSkW ed 12/07 ZEUS Superior kW

Technical Documentation Technical Documentation

ZEUS Superior kW control panel.

Key:

- Stand-by button - On

A- Functioning mode selection button

summer ( ) and winter ( )

B- Domestic hot water priority button ( )

C- Reset (RESET) / exit menu (ESC) button

D- Menu entry (MENU) / data conrmation (OK) button

1 - Domestic hot water temperature selector

2 - Set domestic hot water temperature

3 - Heating temperature selector

4 - Set heating temperature

5 - Anomaly presence

6 - Boiler operating status display

8 - Flame presence symbol and relative power scale

9-7 Primary heat exchanger outlet water temperature

10 - Boiler in Stand-by

11 - Boiler connected to remote control (Optional)

12 - Operating in summer mode

13 - Anti-freeze function in progress

14 - Operating in winter mode

15 - Operation with priority domestic hot water active

16 - Connection to external tools for technician

17 - Menu entries display

18 - Operation with external temperature active probe

19 - Data conrmation or menu access display

20-7- External temperature display

with external probe connected (optional)

21 - Reset request or menu exit display

22 - Chimney sweep function in progress

23 - Boiler manometer

24 - Muliti-function display

STZSkW ed 12/07 ZEUS Superior kW

Technical DocumentationTechnical Documentation

ZEUS Superior kW main components.

Key:

1 - Filling valve

2 - Draining valve

3 - Motorized 3 - way valve

4 - Gas valve

5 - System pressure switch

6 - Boiler pump

7 - Automatic vent valve

8 - Fume ow meter

9 - Primary heat exchanger

10 - Fan

11 - Sample points (air A) - (ue F)

12 - System expansion vessel

13 - D.H.W. probe

14 - D.H.W. expansion vessel

15 - Stainless steel storage tank

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 - Combustion chamber

24 - Ignition and detection electrodes

25 - Burner

26 - Adjustable by-pass

STZSkW ed 12/07 ZEUS Superior kW

Technical Documentation Technical Documentation

e hot water used for heating and DHW is produced by a pri-

mary and secondary (DHW) circuit according to demand.

ZEUS Superior kW hydraulic layout.

18 - System pressure switch

19 - Draining valve

20 - Motorized 3 - way valve

21 - Flow probe

22 - 3 bar safety valve

23 - Filling valve

24 - D.H.W. expansion vessel

25 - 8 bar safety valve

26 - Cold inlet one - way valve

27 - Storage tank drain valve

G - Gas supply

AC - D.H.W. ow

AF - Domestic hot water inlet

R - C.H. return

M - C.H. ow

Key

1 - Gas valve

2 - Stainless steel storage tank coil

3 - Magnesium anode

4 - Stainless steel storage tank

5 - Fume ow meter

6 - Burner

7 - Combustion chamber

8 - Primary heat exchanger

9 - Flue hood

10 - Fan

11 - Sealed chamber

12 - Flow probe

13 - Safety thermostat

14 - Automatic vent valve

15 - System expansion vessel

16 - Boiler pump

17 - Adjustable by-pass

STZSkW ed 12/07 ZEUS Superior kW

Technical DocumentationTechnical Documentation

Primary circuit (boiler circuit).

e primary circuit (and its relative control and safety devices)

is enabled every time there is a heating or DHW request.

Operation.

e heat in combustion exhaust is transferred by copper ns

to the water-gas exchanger (8). e water-gas exchanger then

transfers such heat to the water circulating inside it thanks to

the boiler pump (16).

e water is then pushed directly into the system or it can be

diverted to the storage tank coil (2).

is depends on the position of the electric 3-way valve (20)

Head (kPa)

Flow rate Litres/h

A = Head available to the system at maximum speed with by-pass excluded (adjusting screw completely tightened)

B = Head available to the system at maximum speed (screw tightened by 1.5 revulution with respect to the completely loose adjusting screw)

C = Head available to the system at maximum speed with by-pass open (adjusting screw completely loose)

Head (m H2O)

ZEUS Superior 24 kW

Head (kPa)

Flow rate Litres/h

Head (m H2O)

ZEUS Superior 28 kW

which, according to the type of request, either allows water to

ow through the central heating ow system (M) and return

(R) pipes or diverts the water towards the coil (2).

Flow rate - head graph.

e shape of the curve representing the ow rate-head ratio

will depend on how the system by-pass is adjusted; thus, the

position of the by-pass will provide more or less head to the

system. e graph below illustrates the characteristic curves

according to the by-pass adjustment.

STZSkW ed 12/07 ZEUS Superior kW

Technical Documentation Technical Documentation

Boiler pump (1).

e boiler pump operates on the primary circuit return, im-

mediately downstream of the 3-way valve which is connected

to. It is part of the integrated multi-function group made out

of composite material.

e automatic vent valve (2) is also housed in the hydraulic

group casing.

Primary heat exchanger (1).

e primary heat exchanger is a lamellar water-gas heat ex-

changer with copper pipes and ns (No. 77 ns on the 24 kW,

No. 89 ns on the 28 kW version and No. 105 ns on the 32 kW

version). e NTC central heating ow probe (2) and the safety

thermostat (3) are positioned on its outlet pipe (ow).

Primary heat exchanger is assembled with four tubes connected

in series (4).

Pipes with threaded ttings connect it to the pump ow and

the primary circuit ow.

Return

A = Head available to the system at maximum speed with by-pass excluded (adjusting screw completely tightened)

B = Head available to the system at maximum speed (screw tightened by 1.5 revulution with respect to the completely loose adjusting screw)

C = Head available to the system at maximum speed with by-pass open (adjusting screw completely loose)

ZEUS Superior 32 kW

Head (m H2O)

Head (kPa)

Flow rate Litres/h

Flow

STZSkW ed 12/07 ZEUS Superior kW

Technical DocumentationTechnical Documentation

Motorized 3-way valve.

e electric 3-way valve operates on the primary circuit re-

turn and, according to the type of request (DHW or central

heating), it either directs hot water to central heating system

or storage tank coil.

Such operation depends on the position of the shutter (5),

which either closes the way toward the system opening the way

toward the storage tank (DHW position) or vice-versa (central

heating position).

e shutter (5) can be shifted to either position by powering

the motor (1).

e hydraulic part consists in a group made of composite

material (2) (which includes the pump), driven by a motor (1)

which shifts the valve as necessary.

Operation.

When central heating or DHW position is required, the motor

(1) is switched on by the P.C.B.

Every 180° turn of the motor, shifts the shutter (5) and either

compresses (central heating position) or releases (DHW position)

the shutter opposing spring (4).

Both the spring (4) and the shutter (5) are located inside the

3-way cartridge (3).

When the requested position is reached, it alternatively opens

and closes one of the two limit micro-switches (6) inside the

motor casing (1).

Such procedure makes it possible for disconnection of power

supply to the motor, locking the motor in the position it is in

and enable motor function only when a dierent request is

received (DHW or central heating request).

PUMP

RETURN

SYSTEM

RETURN

COIL

RETURN

Storage

tank coil

return

Pump

ow

System

return

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