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Technical documentation
- GENERAL FEATURES
ZEUS Superior is a wall-hung room sealed fan-assisted boiler featuring a "Gaudium Magnum" device for
fully exploiting the characteristics of this 54 l boiler in AISI 316L stainless steel
The appliance is regulated and controlled by means of a printed microprocessor control board which,
through a display, shows the state of boiler operation (temperature, safety devices, etc.) and enables it to
be connected (optional) to the Remote Friend Control, to the zones unit and to the Multisystem Water
Disconnector.(D.I.M.)
The range includes three electronic-ignition versions with heat outputs of 24.4 kW (21,000 kcal/h), 27.9
kW (24,000 kcal/h) and 31.4 kW (27,000 kcal/h).
The hydraulic circuit features a high-head copper water-gas exchanger, an electric 3-way valve, a 2 l
d.h.w. expansion vessel, an adjustable system
maximum available flow of the domestic hot water (Gaudium Magnum).
Combustion air flow into the sealed chamber and flue extraction are ensured by a fan, the correct
operation of which is controlled by a differential pressure switch.
- MAIN DIMENSIONS AND CONNECTIONS
STZS ed 06/03
ZEUS Superior
Manual service centrala termica
murala Immergas zeus superior cu
boiler
ZEUS 21 Superior
ZEUS 24 Superior
ZEUS 27 Superior
by-pass and a device that permits to increase the
DIMENSIONS (mm)
HEIGHT
ZEUS 21/24/27
GAS
ZEUS 21/24/27
1/2 "
V - electric connection
G - gas supply
R - system return
M - system delivery
S - recirculation (optional )
U - domestic hot water outlet
E - domestic cold water inlet
1
Technical documentation
.
WIDTH
DEPTH
900
600
ATTACCHI
DOMESTIC
SYSTEM
WATER
G
R
M
U
1/2 "
3/4 "
3/4 "
ZEUS SUPERIOR
450
E
1/2 "
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Table of Contents
Related Manuals for Immergas ZEUS Superior Series
Summary of Contents for Immergas ZEUS Superior Series
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Page 1: General Features
Technical documentation Technical documentation ZEUS Superior Manual service centrala termica murala Immergas zeus superior cu boiler ZEUS 21 Superior ZEUS 24 Superior ZEUS 27 Superior - GENERAL FEATURES ZEUS Superior is a wall-hung room sealed fan-assisted boiler featuring a "Gaudium Magnum" device for... - Page 2 Technical documentation Technical documentation ZEUS 21-24 Superior MAIN COMPONENTS 1 - Intake points (A=air) (F=flue) 16- Domestic hot water NTC probe 2 - Flue safety pressure switch 17- Overheating safety thermostat 3 - Adjustment and limit NTC probe 18- 316L stainless steel storage tank 4 - Primary heat exchanger 19- 3 bar safety valve (system) 5 - Combustion chamber...
- Page 3 Technical documentation Technical documentation ZEUS 27 Superior MAIN COMPONENTS 1 - Intake points (A=air) (F=flue) 16- Domestic hot water. NTC probe 2 - Flue safety pressure switch 17- Overheating safety thermostat 3 - Adjustment and limit NTC probe 18- 316L stainless steel storage tank 4 - Primary heat exchanger 19- 3 bar safety valve (system) 5 - Combustion chamber...
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Page 4: Control Panel
Technical documentation Technical documentation CONTROL PANEL 1 - Green heating operating indicator 7 - Green Gaudium Magnum operating indicator 2 - Heating temperature selector 8 - Storage tank thermometer 9 - Boiler pressure gauge 3 - Domestic hot water temperature selector 4 - Green domestic hot water operation indicator 10- Reset 5 - 0/SUMMER and CAR/WINTER switch... -
Page 5: Primary Circuit
Technical documentation Technical documentation HYDRAULIC CIRCUIT 1 - Storage tank drain valve 2 - One way valve 3 - Coil 4 - Gas valve 5 - Magnesium anode 6 - Storage tank 7 - Pump 8 - Burner 9 - Combustion chamber 10- Primary heat exchanger 11- Flue hood 12- Fan... -
Page 6: Primary Heat Exchanger
Technical documentation Technical documentation - CIRCULATOR This operates on the primary circuit return and is 21 and 24 versions 27 version located on the brass header assembly of the electric three ways valve. It is connected to the monobloc and exchanger by means of threaded connecting pipes. - Page 7 Technical documentation Technical documentation - SAFETY DEVICES AND CONTROLS System by-pass (6) 21 and 24 versions This ensures water circulation in the primary circuit (between flow and return) even when this is prevented by the high resistance of the system. It is mounted on the delivery manifold and can be adjusted by means of a screw accessible from the bottom part of the valve plate.
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Page 8: Secondary Circuit
Technical documentation Technical documentation HYDRAULIC CIRCUIT SECONDARY CIRCUIT (D.H.W. CIRCUIT) The domestic hot water circuit is engaged every time the water contained in the storage tank and measured by means of the d.h.w. NTC sensor (4) has to be restored to the desired temperature. This occurs when domestic hot water is used and to restore the losses due to thermal dispersion . - Page 9 Technical documentation Technical documentation - STORAGE TANK This AISI 316L STAINLESS STEEL storage tank has a useful capacity of 60 l. It consists of an external sleeve enclosed at the bottom by a flange fixed by 12 screws. A STAINLESS STEEL cylindrical pipe with a concentric spiral shape (coil) is inserted inside and is coiled along all the height of the storage tank.
- Page 10 Re-setting Gaudium Magnum switch on “0” position, the valve (3) is always deactivates. N.B.: in order to activate the “Gaudium Magnum” operation, the adjustment knob of domestic hot water temperature must be adjusted from 6 to 9. Service centrale Immergas NON STOP www.imoca.ro www.reparatii-centrale-termice-nonstop.ro...
- Page 11 Technical documentation Technical documentation - MOTORIZED 3-WAY VALVE This is a 3-way electric valve operating on the return pipe of the primary circuit that permits, according to the type of request (domestic hot water or central heating), running boiler water into the central heating system or into the storage tank coil This depends on the position of the shutter (3) which impedes transit towards the system and at the same time permits this towards the storage tank (d.h.w.
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Page 12: Gas Circuit
Technical documentation Technical documentation GAS CIRCUIT The circuit consists of an atmospheric burner and a modulating type valve for gas combustion and gas flow adjustment respectively. - OPERATION When the main coils (3) are energized, both inner valve shutters open, allowing the gas to flow towards the burner. -
Page 13: Gas Adjustments
Technical documentation Technical documentation GAS ADJUSTMENTS Max and minimum gas pressure adjustments can be made respecting the values shown on the page’s 31 and 32. - SIT 845 VALVE After having connected the leads of a differential pressure gauge to the gas valve outlet (4) and to the positive pressure connector at the top of the sealed chamber (see... - Page 14 Technical documentation Technical documentation FLUE CIRCUIT - OPERATION The combustion residues, after investing the water-gas exchanger (1), are conveyed to a hood (3) at the top of which is a draught diverter (4). Operation of the fan ensures forced extraction of the flues and at the same time creates a vacuum in the sealed chamber (2) that permits extraction of the combustion air from outside.
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Page 15: Flue Pressure Switch
Technical documentation Technical documentation - FLUE PRESSURE SWITCH (5) This is positioned in the top inner part of the sealed chamber and, by means of the points provided, reads the difference in pressure between the top of the draught diverter (the point where the extractor is positioned and operates) and the inside of the sealed chamber. - Page 16 Technical documentation Technical documentation EXTRACTION AND EXHAUST SYSTEMS (see extraction and exhaust end instructions ) ZEUS Superior is prearranged for connection to the special coupling type extraction and exhaust pipes. - EXHAUST Connection to the exhaust pipes is done by means of a flange (1) or a flanged curve to be fastened to the union (4) on the top part of the sealed chamber after placing in between a special shaped seal (6).
- Page 17 Technical documentation Technical documentation Coupling type vertical concentric kit 60 /100 The exhaust pipe (φ 60 mm) is fitted inside the extraction pipe (φ 100 mm). Connection to the boiler is made using a flange (1) that, by means of the necessary extensions, must be connected to the special 60/100 extraction and exhaust end with aluminium tile.
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Page 18: Electrical Circuit
Technical documentation Technical documentation ELECTRICAL CIRCUIT CAR Remote control Gaudium Magnum switch Reset button Control xone unitt Gaudium Magnum operating Pump pressure switch Central heating operation LED indicator Flue pressure switch D.h.w. operation LED MOD Modulation coil Room thermostat Flame LED Circulator Max flow limit thermostat E1/E2 Ignition electrodes... - Page 19 Technical documentation Technical documentation Depending on position, this allows: - circuit not powered Main switch 3-position switch - d.h.w. and CAR function (optional) (IG) - d.h.w. and central heating function. It is screw up on the external wall of the storage tank. Clicson double- Max flow limit thermostat With the Gaudium Magnum switch (IP) in...
- Page 20 Technical documentation Technical documentation LOW-VOLTAGE CIRCUIT SAFETY DEVICES AND CONTROLS Allows the modulation board to detect the temperature of the primary circuit water flow. Sensor NTC Central-heating sensor If this sensor stops working, burner operation stops both in central- (NR) 10 kohm 25 ºC heating and d.h.w.
- Page 21 Technical documentation Technical documentation ELECTRICAL CIRCUIT CENTRAL-HEATING PHASE Operation with room thermostat When the mainr switch (IG) is in WINTER position, it powers the modulation card and enables operation in central heating mode. When the room thermostat contact (TA) is closed, the low-voltage circuit starts the pump (MP) by closing the contact of relay K2.
- Page 22 Technical documentation Technical documentation ELECTRICAL CIRCUIT D.H.W. PHASE Operation When the main switch (IG) is in SUMMER or WINTER position, it powers the modulation board and enables operation in d.h.w. mode. When the temperature read by NTC d.h.w. sensor (NB) is below that set on the control panel (or on the CAR if fitted), the adjustment circuit starts the pump (MP) by means of the contact of relay K2.
- Page 23 Technical documentation Technical documentation MODULATION BOARD The boiler is equipped with a microprocessor-controlled electronic board used on both the models with 3-way electric valve (Zeus Superior, Eolo Superior Plus) and on the models with central-heating and d.h.w. pumps (Hercules). The different type of operation is obtained by adjusting diode D9 (diode engaged = electric 3-way valve, diode disengaged = double pump).
- Page 24 Technical documentation Technical documentation The circulation of water results in the closing of the pump pressure switch (SP) which, because it is connected in series to the NC contact of the flue pressure switch (SV) powers the coil of relay “K5”. If the temperature detected by means of NTC central-heating sensor (NR) is below that set by means of the central heating potentiometer of the remote control (CAR), the adjustment circuit excites relay “K5”...
- Page 25 Technical documentation Technical documentation INPUTS This is a resistance that varies in a way inversely proportionate to the Sensor NTC Central-heating sensor temperature of the water flow in the primary circuit. 10 kohm 25 ºC (NR) It is used as a limit thermostat (90 ºC). Sensor NTC D.h.w.
- Page 26 Technical documentation Technical documentation OUTPUTS This relay permits powering the motor of the 3-way electric valve (VD). 3-way valve relay (K3) It is excited by a central-heating request and remains idle with a d.h.w. request. This signal enables the control zone unit to know the operating condition of the appliance Control zone unit (CZ) (d.h.w./heating) and, if fitted, to recognise the CAR as area 1 room thermostat (see control (optional )
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Page 27: Safety Devices
Technical documentation Technical documentation SAFETY DEVICES The circulator (MP) is operated for 150 seconds after: - 24 hours of inactivity with the SUM/WINT switch in SUMMER position Circulator antilock - 3 hours of inactivity with the SUM/WINT switch in WINTER position (radiator antifreeze). - Page 28 Technical documentation Technical documentation INDICATORS (display card) This green LED lights up when the boiler is working in central-heating and antifreeze mode. This green LED lights up when the boiler is working in d.h.w. mode. This orange LED lights up when the burner is operating. Depending on the condition, this indicates: - the value of the temperature detected by the delivery sensor (NR) during operation in central-heating, d.h.w., antifreeze and chimneysweep mode.
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Page 29: Flame Detection
Technical documentation Technical documentation ZEUS Superior OPERATION SEQUENCE Central-heating mode D.h.w. mode POWER SUPPLY POWER SUPPLY Main switch in WINTER position Main switch in SUMMER or WINTER position ⇓ ⇓ MODULATION CARD AND C.A.R. (remote MODULATION CARD AND C.A.R. (remote control) POWER SUPPLY control) POWER SUPPLY When the main switch contacts close (WINTER position) - Page 30 Technical documentation Technical documentation ZEUS Superior TECHNICAL DATA ZEUS 21 ZEUS 24 ZEUS 27 Nominal heating capacity kW (Kcal/h) 26,6 (22901) 30,49 (26116) 34,3 (29508) Minimum heating capacity kW (Kcal/h) 10,9 (9401) 12,3 (10539) 14,7 (12647) Maximum heat output (useful) kW (Kcal/h) 24,4 (21000) 27,9 (24000)
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Page 31: Combustion Parameters
Technical documentation Technical documentation COMBUSTION PARAMETERS (with combustion air temperature 15 ºC) ZEUS 21 Superior ZEUS 24 Superior ZEUS 27 Superior Rated power flue gas mass flow kg/h rate Minimum power flue gas mass kg/h flow rate at rated power at minimum power CO at 0% O at rated power... - Page 32 Technical documentation Technical documentation ZEUS 24 Superior HEAT OUTPUT ADJUSTMENTS NATURAL GAS (G20) BUTANE (G30) PROPANE (G31) Heat Heat Burner gas Burner gas Burner gas Burner nozzle Burner nozzle Burner nozzle output output flow rate flow rate flow rate pressure pressure pressure (Kcal/h)