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Technical documentation 

 

Technical documentation

 

STZS ed. 06/03

 

20

 

ZEUS SUPERIOR

 

 

 

LOW-VOLTAGE CIRCUIT 

SAFETY DEVICES AND CONTROLS 

 

Central-heating sensor 

(NR) 

Allows the modulation board to detect the temperature of the primary 
circuit water flow. 
If this sensor stops working, burner operation stops both in central-
heating and d.h.w. modes. 
It is positioned at the outlet of the main exchanger. 

Sensor NTC  

10 kohm 25 ºC 

 

 

 

Control zone unit (CZ) 

(external optional) 

Permits boiler operation with 3 area valves /external pumps controlled 
by respective room thermostats. 
Zone 1 is controlled 

(times/temperatures) 

by means of the CAR 

(if 

fitted).

 

See control unit 

zone operation 

 

 

 

Domestic hot water sensor 

(NB) 

This enables the modulation board to detect the temperature of the hot 
water in the storage tank. 
Its failure stops burner operation in domestic hot water phase. 
It is inserted inside a bulb holder in contact with the external wall of 
the cylinder. 

Sensor NTC  

10 kohm 25 ºC 

 

 

 

External sensor (NE) 

(external optional) 

Detects external temperature and enables the modulation board to 
change the system flow temperature according to outside temperature. 

Sensor PTC  

1 kohm  25 ºC 

 

 

 

Flue pressure switch 

(SV) 

This acts on the modulation board and enables burner operation when 
flue expulsion occurs correctly. 
If this is closed with the fan off, the ignition cycle will not start.

 

2-position switch

 

 

 

 

Pump pressure switch  

(SP) 

This acts on the modulation board and permits interrupting power to 
the control unit in the event of there being no circulation in the boiler 
circuit. 

Double-contact 

switch  

 

 

 

Remote control (CAR) 

(external optional) 

Permits remote control of boiler 

iSUM/WINT switch, temperature 

adjustment and indication, alarm display, reset, etc.)

 and acts as a 

weekly chrono-thermostat. 
Together with the external sensor (NE), allows the modulation board to 
change the system flow temperature according to need. 

See Remote 

Friend Control 

operation (CAR

 

 

 

Room thermostat (TA) 

(external optional) 

This enables operation in central heating phase when the room 
temperature is below that required. 
In case of CAR installation, the room thermostat must be disconnected 
without resetting the pre-existing jumper P1. 

Double clean-

contact switch 

 

 

 
 

LOADS 

 

Display board 

This displays burner operation 

(orange LED),

 operation in d.h.w. phase (

green LED)

 and in 

central-heating or antifreeze phase 

(green LED

) on the control panel. 

By means of a dispaly, it indicates the temperature of the boiler, the temperatures set for 
d.h.w. and central-heating and the error codes

 (see modulation board operation).

 

 

 

Modulation coil (MOD) 

This is powered by the modulation board with variable direct current. 
It permits changing gas pressure to the burner. 

 

 

Содержание ZEUS 21 Superior

Страница 1: ...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...

Страница 2: ...m 12 Automatic air vent 13 Flue hood 14 Expansion vessel 15 Ignition and detection electrodes 16 Domestic hot water NTC probe 17 Overheating safety thermostat 18 316L stainless steel storage tank 19 3...

Страница 3: ...room 12 Automatic air vent 13 Flue hood 14 Expansion vessel 15 Ignition and detection electrodes 16 Domestic hot water NTC probe 17 Overheating safety thermostat 18 316L stainless steel storage tank...

Страница 4: ...re selector 3 Domestic hot water temperature selector 4 Green domestic hot water operation indicator 5 0 SUMMER and CAR WINTER switch 6 Gaudium Magnum operation switch 7 Green Gaudium Magnum operating...

Страница 5: ...it thermostat G Gas supply U Domestic hot water outlet E Domestic cold water inlet R System return M System delivery The hot water for the heating system and for the domestic circuit is produced by a...

Страница 6: ...vailable head depends on system bypass adjustment which depending on its position gives the system greater or less head The graphs are refereed to the pump operating at top speed with A Bypass disconn...

Страница 7: ...pump extremities Its housing is in the delivery manifold and is coupled to a micro switch 3 that prevents burner operation in the event of pump blockage or no water in the boiler circuit Prevents pri...

Страница 8: ...ersion OPERATION Following a d h w request the modulation board starts the boiler pump 7 and powers the motor of the electric 3 way valve 8 The consequent movement of the valve to domestic hot water p...

Страница 9: ...6 see description and operation Gaudium Magnum Recirculation kit optional This is used to connect the pipes of any recirculation system of the domestic hot water circuit It consists of a pipe that is...

Страница 10: ...position It starts to work when the limit thermostat of max flow 3 fitted on the storage tank detects a temperature upper 50 C When the temperature gets down under 41 C the limit thermostat of max fl...

Страница 11: ...positions is achieved by energizing the motor 1 Operation To move to the heating or domestic hot water circuit the motor 1 is activated by the control card Activating the motor whose rpm is reduced b...

Страница 12: ...te the burner They are electrically connected in parallel and fed by mains voltage through a special connector 2 Modulation coil 1 This low voltage coil is controlled by the modulation card It control...

Страница 13: ...ckwise to increase the pressure to the burner and counter clockwise to reduce it 1 Modulation coil 4 Gas valve outlet pressure connector 2 Min power setting screw 5 Gas valve inlet pressure connector...

Страница 14: ...peration of which enables or does not enable burner ignition AIR FLUE SAMPLING TRAPS 6 7 The top outer part of the chamber features two sumps with screw closing accessible from the front and through w...

Страница 15: ...he extraction exhaust terminals and is measured by the special pressure points fitted to the top part of the sealed chamber 8 9 Its operation causes a deviation of a switch contact that acts on the un...

Страница 16: ...is done through the concentric hole outside the exhaust pipe 5 EXTRACTION EXHAUST KIT The kits and relevant accessories make it possible to use four concentric systems and two doubled systems As regar...

Страница 17: ...Max possible overall length is 12 2 straight and vertical metres 80 80 coupling type separator kit Both pipes have a diameter of 80 mm Connections to the boiler are made using two special flanges for...

Страница 18: ...mostat VD Electric three way valve V G Gas valve The electric circuit is interlocked with a microprocessor electronic board that controls boiler functions The control and safety devices work in part a...

Страница 19: ...lation board whenever there is a demand for d h w heating or antifreeze Fan MV Ensures the flow of air inside the sealed combustion chamber and the exit of flues produced by combustion Powered by the...

Страница 20: ...ation when flue expulsion occurs correctly If this is closed with the fan off the ignition cycle will not start 2 position switch Pump pressure switch SP This acts on the modulation board and permits...

Страница 21: ...ing the relay K1 The consequent deviation of the flue pressure switch SV powers the relay K4 the contact of which on closing enables the control unit IGN UNIT to start the ignition cycle commanding fi...

Страница 22: ...the 3 way valve VD is powered and continues to operate until the limit switch A opens once the d h w position has been reached The low voltage circuit excites the relay K5 and starts the fan MV comman...

Страница 23: ...el by means of the central heating potentiometer HEATING the adjustment circuit excites relay K5 and starts the fan MV controlled by relay K1 The consequent deviation of the contact of the flue pressu...

Страница 24: ...g to the difference between the temperature set by means of the d h w potentiometer D H W and that measured by the d h w sensor NB When the temperature measured by the d h w sensor NB exceeds that req...

Страница 25: ...er d h w operation mode SUMMER or d h w and central heating mode WINTER are enabled closed WINTER open SUMMER Overheating lock IC1 This is a signal which through an optoinsulator indicates input to th...

Страница 26: ...l unit after the overheating or ignition failure safety devices have tripped The operation is performed on the boiler control panel by means of reset button PU1 or if fitted on the remote control pane...

Страница 27: ...ed until the temperature drops below 93 C NTC sensors faulty NR and NB The breakage of the d h w sensor NB prevents operation in d h w phase The breakage of the heat sensor NR prevents operation in ce...

Страница 28: ...w antifreeze and chimneysweep mode The value set during the heating and domestic hot water circuit temperature adjustment for 5 seconds the letters CE with the CAR installed and the main switch in pos...

Страница 29: ...rd powers the circulator and the electric 3 way valve The valve is moved to d h w position CLOSING OF PUMP PRESSURE MICROSWITCH The circulation of water inside the primary circuit causes the closing o...

Страница 30: ...7 37 377 37 377 Max operating pressure of heating circuit bar 3 3 3 Max operating temperature of heating circuit C 90 90 90 Adjustable heating temperature C 38 85 38 85 38 85 Total volume of expansion...

Страница 31: ...96 93 101 93 103 102 101 2 95 6 99 2 ZEUS 21 Superior HEAT OUTPUT ADJUSTMENTS NATURAL GAS G20 BUTANE G30 PROPANE G31 Heat output Kcal h Heat output kW Burner gas flow rate m3 h Burner nozzle pressure...

Страница 32: ...0 11 6 1 43 2 0 20 1 07 6 2 64 1 05 8 7 89 9000 10 5 1 30 1 7 17 0 97 5 5 56 0 96 7 1 73 ZEUS 27 Superior HEAT OUTPUT ADJUSTMENTS NATURAL GAS G20 BUTANE G30 PROPANE G31 Heat output Kcal h Heat output...

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