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Zeus Mini Instructions 

It is often necessary to install a longer flue system to cater for site 
conditions.  There are several different flue system sizes available 
for the Zeus Mini boiler.  

 
Horizontal concentric kit 60 /100 

The exhaust pipe (φ 60 mm) is fitted inside the air intake 
pipe (φ 100 mm).  Connection to the boiler is made using a 90° 
bend (1) which can be turned in any direction and can be connected 
to the terminal (2). 
Max possible overall length after the first bend (1) is 
3 straight and horizontal metres. 
 

Horizontal concentric kit 80 /125 

The exhaust pipe (φ 80 mm) is fitted inside the air intake 
pipe (φ 125 mm). Connection to the boiler is made using a 90° bend 
diameter 60/100 (1) which can be turned in any 
direction and connected using the adapter 60/100- 
80/125 (2) to the 80/125 terminal (3). 
Max possible overall length beyond the first bend(1) is 
7.3 straight and horizontal metres. 
 

Vertical concentric kit 60 /100 

The exhaust pipe (φ 60 mm) is fitted inside the 
air intake pipe (φ 100 mm).  Connection to the boiler is made using 
a flange (1) which may be connected to the 60/100 vertical terminal. 
Max possible overall length is 4.7 straight and 
vertical metres. 
 

Vertical concentric kit 80 /125 

The exhaust pipe (φ 80 mm) is fitted inside the Air intake pipe (φ 
125 mm). Connection to the boiler is made using a flange (1).  The 
adapter 60/100-80/125 (3) is used the connect the 80/125 terminal 
(2). Max possible overall length is 12.2 straight and 
vertical metres. 
 
 
 

Separated 80/80  flue kit 

Both pipes have a diameter of 80 mm. Connections to the boiler are 
made using two special flanges for exhaust (1) from the centre pipe 
and extraction (2) from one of the two side holes. 
Max possible length (extr exhaust) is 33 straight horizontal 
metres and 41 straight vertical metres. 

To prevent condensation problems, the exhaust pipe should 
not be more than 5 m long.  Advice on prevention of condensa-
tion is available from RVR Limited.  Please contact us when 
designing longer flue systems. 

 
Separated 80/80 insulated flue kit 

Both pipes have a working diameter of 80 mm. 
Connections to the boiler are made using two special 
flanges for exhaust (1) from the centre pipe and 
extraction (2) from one of the two side holes. 
Insulation is obtained thanks to special seals (3) 
whereby an air space can be created by means of a φ 
125 mm external concentric pipe. 
Max possible length (extr exhaust) is 33 
straight metres. 

To prevent condensation problems, the exhaust pipe 
should not be more than 12 m long 

Extended Flue Systems 

Summary of Contents for Immergas Zeus Mini

Page 1: ...nted Hot Water Storage For Technical assistance spare parts or for Service call RVR Limited Kenmare Co Kerry Tel 064 41344 Fax 064 89520 Doc Ref ALT104 181207 Read these instructions completely before using or installing the Immergas Zeus Mini gas boiler LEAVE THESE INSTRUCTIONS WITH THE USER IMMERGAS ZEUS MINI ...

Page 2: ...iring Regulations Health Safety legislation This appliance meets the requirements of IPX4D ie degree of protection against moisture Failure to install this appliance correctly could lead to prosecution It is in your own interest and that of safety to ensure that the law is complied with Manufacturer s instructions must NOT be taken in anyway as over riding statutory obligations Introduction 1 Yell...

Page 3: ...ity bar 1 Min pressure dynamic domestic pressure bar 0 1 Hot water storage capacity L 45 Continuous hot water flow rate T 30oC l min 11 1 Boiler weight filled kg 105 Boiler weight empty kg 56 ELECTRICAL Electrical connection v hz 230 50 Nominal Absorption A 0 75 Electrical power W 135 Power absorbed by circulating pump W 67 Power absorbed by fan W 45 Equipment electrical system production IPX4D FL...

Page 4: ...hanger 8 Ignition detection electrodes 9 Combustion chamber 10 Burner 11 Automatic air vent 12 Circulating pump 13 Gas valve 14 Motorized 3 way valve 15 Filling valve 16 Expansion vessel 17 D H W NTC thermistor 18 AISI 316 l Stainless steel storage tank 19 8 BAR SAFETY VALVE 20 Tank draining valve 21 Fan 22 Sealed chamber 23 Flue hood 24 3 bar safety valve 25 Draining valve Cold Water IN Hot Water...

Page 5: ...1363 or a fused double pole switch with a contact separation of at least 3 mm in both poles Wiring external to the boiler must be in accordance with the current IEE Wiring Regulations Note External controls connected to the boiler must be of the volt free type and are connected to terminals 6 and 9 as shown above Connection of a voltage to any boiler terminals other than the mains lead will result...

Page 6: ... vertical metres Vertical concentric kit 80 125 The exhaust pipe φ 80 mm is fitted inside the Air intake pipe φ 125 mm Connection to the boiler is made using a flange 1 The adapter 60 100 80 125 3 is used the connect the 80 125 terminal 2 Max possible overall length is 12 2 straight and vertical metres Separated 80 80 flue kit Both pipes have a diameter of 80 mm Connections to the boiler are made ...

Page 7: ...ables The resistance factor varies depending on whether the component in question is conveys fresh inlet air or hot combustion gases All boilers have a maximum resistance factor of 100 The sum of all components in the flue system must not exceed the maximum overall resistance factor of 100 Flue calculations for more complex systems ...

Page 8: ...tances Component Resistance Quantity Total 80mm Intake pipe 2 3 9 20 7 90 air intake bend 5 3 15 80mm Flue pipe 3 6 18 90 Flue bend 6 5 3 19 5 73 2 Total Flue Resistance In this case the total resistance of the system is less than 100 The flue de sign is acceptable Care should be taken to insulate the exhaust flue pipe to ensure that con densation is not possible ...

Page 9: ...If the terminal is fitted less than 2 m above a surface to which people have access the terminal must be protected by a terminal guard IMPORTANT Failure to install flue systems correctly may lead to serious injury or death Ensure that The flue slopes slightly towards the outlet by between 1 and 2 to ensure any condensate moves to the discharge point The flue is adequately supported along it s leng...

Page 10: ...ystem pressure should not be more than 2 5 bar when the system is at maximum operating temperature The boiler is supplied with the following components built in Central Heating Pressure relief valve complying with BS 6759 and set to operate at 3 bar The dis charge pipe must be routed clear of the boiler to a drain so that it can be seen but cannot cause injury to persons or property A Pressure gau...

Page 11: ...m must be able to withstand pressures up to 3 bar Drain taps to BS 2879 must be used to allow the system to be completely drained The heating system should be thoroughly flushed before the boiler is connected and again after the first heating If it is necessary to add inhibitor to the central heating system contact RVR Ltd for guidance The most important components of the system are shown in the d...

Page 12: ... components required for a safe and efficient un vented hot water system An air cushion which is present at the top of the 45l storage vessel provides suffi cient expansion for the domestic hot water system An optional additional DHW expansion kit is available for situations where the inlet pressure exceeds 3 bar or other situations where the expansion capacity may not be adequate NOTE In the Dubl...

Page 13: ...ation should be given to the installation of an electronically operated device to warn when discharge takes place High Level Termination At high level discharge onto a roof is acceptable providing the roof is capable of withstanding high temperatures and there is a distance of 3 m from any plastic guttering systems that would collect such discharge Note The discharge may consist of scalding water ...

Page 14: ...ver touch when barefoot never pull electrical cables or leave the appliance exposed to atmospheric agents rain sunlight etc the appliance power supply cable must never be replaced by the user in the event of damage to the cable switch off the appliance and contact a qualified service technician in the event of prolonged periods when the boiler is not in use turn off the main power switch Using the...

Page 15: ...ault If the unit detects an problem in the domestic circuit NTC sensor the boiler will not produce domestic hot water call a qualified technician No water circulating This occurs if there is overheating in the boiler due to insufficient water circulation through the boiler check that no shutoff devices are closed and that the system is free of air Check that the circu lating pump is running freely...

Page 16: ...tes on the gauge Ensure activation of the device for protection against the ionisation flame control gas activation time must be less than ten seconds Visually inspect to check for leakage of water or oxidation of fittings Check visually that the water safety valve outlets are not blocked and that the tundish is clear Check that the charge of the expansion vessel after discharging system pressure ...

Page 17: ...Instructions N B Pressure values specified in the table indicate the difference of pressure values between the gas valve outlet and the com bustion chamber Adjustments are carried out using a differential pressure gauge ...

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