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Related Manuals for Immergas ZEUS Maior
Summary of Contents for Immergas ZEUS Maior
- Page 1 ZEUS Maior @ Wall-hung, room sealed boilers with storage tank...
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Page 3: General Features
ZEUS 21 Maior @ ZEUS 24 Maior @ General features. ZEUS Maior @ is a wall-hung room-sealed fan-assisted boiler (type C) with a storage tank for central heating and producing domestic hot water. Th is boiler can be also be installed in the B confi... -
Page 4: Control Panel
2 - Domestic hot water selector switch 6 - Boiler shutdown red indicator light 3 - Burner ON yellow indicator light 7 - Boiler thermometer 4 - Boiler ON green indicator light 8 - Boiler manometer STZM@ ed 05/04 ZEUS Maior @... - Page 5 Technical Documentation Technical Documentation ZEUS Maior @ main components. Legend: 1 - Testing holes (A air) - (F flue) 15 - System expansion tank 2 - Flue pressure switch 16 - Ignition/detection electrodes 3 - Central heating delivery NTC probe and limit...
- Page 6 Technical Documentation Technical Documentation ZEUS Maior @ Hydraulic diagram. Legend: 18 - System water pressure switch (absolute) 1 - Gas valve 19 - System draining cock 2 - Stainless steel coil for the storage tank 20 - Motorised 3-way diverter valve...
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Page 7: Operation
Head available to the system at top speed (screw tightened 1.5 turns Delivery compared to the adjustment screw which is completely unscrewed) Return Head available to the system at top speed with the by-pass open (adjustment screw completely unscrewed) STZM@ ed 05/04 ZEUS Maior @... - Page 8 This makes it possible to cut power off to the motor, block- ing it in the position reached and to enable motor operation only when a different request is made (d.h.w. or central heating signal). CIRCULATOR RETURN COIL RETURN SYSTEM RETURN STZM@ ed 05/04 ZEUS Maior @...
- Page 9 It has a useful capacity of 5.9 litres (ZEUS 21 version) and 7.1 litres (ZEUS 24 version) and a pre-load pressure of 1.0 bar. It is located at the front of the storage tank in front of the boiler. STZM@ ed 05/04 ZEUS Maior @...
- Page 10 (4). This prevents circulation in the heating system while it is al- lowed in the coil (4) which, through its walls, lets the cold water STZM@ ed 05/04 ZEUS Maior @...
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Page 11: Storage Tank
- a filter, a storage tank draining cock with hose fitting (12) and a one-way valve (see the hydraulic circuit, part. “5”) to prevent the increase in pressure, resulting from heating the domestic hot water, from causing the water to return to the water mains. STZM@ ed 05/04 ZEUS Maior @... -
Page 12: Gas Circuit
This is a low voltage coil controlled by the modulation board. It controls the gas valve stabiliser and allows the outlet pres- sure to be varied in a way proportionate to the DC running through it. STZM@ ed 05/04 ZEUS Maior @... -
Page 13: Gas Settings
Legend: 1 - Coil 2 - Minimum output adjustment screw 3 - Maximum output adjustment screw 4 - Gas valve outlet pressure point 5 - Gas valve inlet pressure point 6 - Protection cap STZM@ ed 05/04 ZEUS Maior @... - Page 14 Likewise, the negative pressure point (9) is coupled to a Y- shaped pipe (11) that, in turn, is connected to the draught diverter (4) and to the negative pressure point of the flue pressure switch (6). STZM@ ed 05/04 ZEUS Maior @...
- Page 15 Extraction and exhaust systems. (see the extraction and exhaust ends instructions). ZEUS Maior @ is designed to be connected to the intake/ exhaust coupling pipes and can be installed in the airtight chamber or fan-assisted (type C) configuration or, with the kit, in the open chamber fan-assisted (type B ) configuration.
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Page 16: Electrical Circuit
E1-E2 - Ignition electrodes Some of the control and safety devices work at mains voltage The electrical circuit of the ZEUS Maior @ boiler is controlled 100% by a microprocessor controlled p.c.b. which controls (230 Vac) while others at low voltage. - Page 17 It allow gas to flow to the burner. It ensures the flow of air inside the airtight chamber and the exit of fumes produced by combustion. (M2) It is powered by the ignition control unit. STZM@ ed 05/04 ZEUS Maior @...
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Page 18: Low Voltage Circuit
If CAR is installed the thermostat has to be disconnected without contact restoring the X20 jumper. Loads. Gas valve modulator It is powered by the modulation board with a variable continuous current. (Y2) It allows gas pressure to the burner to be varied. STZM@ ed 05/04 ZEUS Maior @... -
Page 19: Using The Remote Control
After the flue pressure switch contact (S4) has switched (“NO” position) caused by the fan working (M2), the control unit (IGN.BOARD) first powers the ignition electrodes (E1-E2) followed by, with the safety thermostat (E4) enable, both gas valve coils (Y1). STZM@ ed 05/04 ZEUS Maior @... - Page 20 (IGN. BOARD) first powers the ignition electrodes (E1-E2) followed by, receiving the safety thermostat (E4) enable, both gas valve coils (Y1). Burner ignition is detected by the control unit itself (IGN. BOARD) by means of the detection electrode (E3). STZM@ ed 05/04 ZEUS Maior @...
- Page 21 When the set temperature is exceeded the contact of relay K2 opens and the burner goes out. Re-ignition for the same request is inhibited for 180 s / 30 s (see central heating timer selector “S2”). STZM@ ed 05/04 ZEUS Maior @...
- Page 22 (D.H.W.). If, during operation, the central heating delivery probe (B1) measures a temperature higher than 90°C, the relay K2 contact opens to reclose as soon as the temperature drops to 75°C. STZM@ ed 05/04 ZEUS Maior @...
- Page 23 It is used as a limit thermostat (90°C). It is a resistor that varies in an inversely proportionate to the tem- NTC probe D.h.w. probe (B2) perature of the water contained in the storage tank. 10 kohm 25 °C STZM@ ed 05/04 ZEUS Maior @...
- Page 24 (from minimum to 2/3rds of the maximum set on the valve). To make the adjustment the d.h.w. probe (B2) must be electrically disconnected and can (IGN.POW) be done in the first 30 seconds of working in the central heating phase. STZM@ ed 05/04 ZEUS Maior @...
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Page 25: Safety Devices
A d.h.w. probe (B2) malfunction stops operation in the d.h.w. mode. A delivery probe (B1) malfunction stops operation in both the heating and d.h.w. NTC probe breakage (B1 and B2) modes. The (yellow) LED H2 flashes to signal breakage. STZM@ ed 05/04 ZEUS Maior @... - Page 26 NTC probe broken (B2) off flash. flashing lights no water pressure switch tripped alternately poor circulation safety device triggered flashing light (circulator blocked) flashing light E 31 Remote control not compatible / CAR malfunction STZM@ ed 05/04 ZEUS Maior @...
- Page 27 Technical Documentation Technical Documentation ZEUS Maior @ operating sequence. Central heating phase Domestic hot water phase Power on Power on Main switch on Summer or Winter Main switch on Winter Ú Ú Powering the adjustment board and CAR (if mounted) Powering the adjustment board and CAR (if mounted) When the main switch’s contacts close (Winter position) the modulation...
- Page 28 Exhaust flue temperature at max heat output °C Exhaust flue temperature at min heat output °C class weighted mg/kWh CO weighted mg/kWh Type of appliance C12 /C32 / C42 / C52 / B22 Category II2H3+ STZM@ ed 05/04 ZEUS Maior @...
- Page 29 flue accessories complying with product pressure of 2 bar and an inlet temperature of 15°C; these standards. values are measured at boiler outlet considering that to find these declared values it is necessary to mix with cold water. STZM@ ed 05/04 ZEUS Maior @...
- Page 30 16.3 14000 1.93 1.44 11.2 1.42 14.4 15.1 13000 1.80 1.34 1.32 12.7 14.0 12000 1.68 1.25 1.23 11.2 12.8 11000 1.55 1.15 1.14 11.6 10000 1.42 1.06 1.04 10.5 9000 1.29 0.96 0.95 STZM@ ed 05/04 ZEUS Maior @...