2
CONTENTS
MYDENS
COSMOGAS
1 - GENERAL SAFETY WARNINGS ....................................................................................................................................................... 4
1.1 - National installation laws .......................................................................................................................................................... 5
2 - GENERAL INFORMATION ................................................................................................................................................................ 6
2.1 - Introduction .............................................................................................................................................................................. 6
2.2 - Manufacturer ............................................................................................................................................................................ 6
2.3 - Overview of the models ........................................................................................................................................................... 6
2.4 - Accessories .............................................................................................................................................................................. 6
2.5 - Meaning of symbols used ........................................................................................................................................................ 7
2.6 - Maintenance ............................................................................................................................................................................ 7
2.7 - Disposal ................................................................................................................................................................................... 7
3 - MAIN COMPONENTS ........................................................................................................................................................................ 8
4 - OPERATION .................................................................................................................................................................................... 10
4.1 - Operation and intended use ................................................................................................................................................... 12
4.2 - Water pressure drops curve ................................................................................................................................................... 13
4.3 - Domestic hot water pressure drops curve ............................................................................................................................. 13
5 - INSTALLATION ................................................................................................................................................................................ 14
5.1 - Packaging opening ................................................................................................................................................................ 14
5.2 - Dimensions and minimum safety distances ........................................................................................................................... 14
5.3 - Choosing the installation place .............................................................................................................................................. 14
5.4 - Supply and return ................................................................................................................................................................... 15
5.4.1 - Checking and treating the heating water/filling and supplementary water
............................................................... 15
5.5 - Low-temperature systems ...................................................................................................................................................... 17
5.6 - Domestic hot and cold water .................................................................................................................................................. 17
5.7 - Gas ........................................................................................................................................................................................ 17
5.9 - Condensate drain pipe ........................................................................................................................................................... 18
5.10 - Safety valve ......................................................................................................................................................................... 19
5.11 - Hydraulic and gas connections, and mounting of the bottom cover ..................................................................................... 19
5.12 - Hydraulic connections for model -- B ................................................................................................................................... 20
5.13 - Water softener (on request) ................................................................................................................................................. 20
5.14 - Electrical connections: details .............................................................................................................................................. 21
5.14.1 - Power main electrical supply .................................................................................................................................. 22
5.14.2 - Choosing the room thermostat/chronothermostat .................................................................................................. 22
5.14.3 - Installation of the room thermostat/chronothermostat ........................................................................................... 22
5.14.4 - Connecting the room thermostat/chronothermostat ............................................................................................... 22
5.14.5 - CR04 remote time control (on request) .................................................................................................................. 23
5.14.6 - Installing the outdoor temperature sensor (on request) ......................................................................................... 23
5.14.7 - 0-10 VDC type dialogue ......................................................................................................................................... 24
5.14.8 - Alarm output ........................................................................................................................................................... 24
5.15 - Connection and setting of the appliance in cascade. ........................................................................................................... 25
5.16 - Connecting the appliance to a tank with coil ........................................................................................................................ 27
5.16.1 - Anti-legionella ......................................................................................................................................................... 27
5.17 - Flue exhaust and air intake ducts ........................................................................................................................................ 28
5.17.1 - Type of intake/exhaust B23 and B23P ................................................................................................................... 29
5.17.2 - “Split 80/80PP” system (polypropylene) (type C43; C53; C83; C93) ..................................................................... 30
5.17.3 - "Split 80/80PP” system: accessories available ...................................................................................................... 31
5.17.4 - “Split 80/80PP” system: installation examples ....................................................................................................... 32
5.17.5 - “60/100PP Vertical coaxial” system (polypropylene) (Type C13; C33) ................................................................... 33
5.17.6 - “60/100PP Horizontal coaxial” system (polypropylene) (Type C13; C33) .............................................................. 34
5.17.7 - “60/100PP Coaxial” system: accessories available ................................................................................................ 35
5.17.8 - “60/100PP Coaxial” system: installation examples ................................................................................................ 36
5.17.9 - “80PP single” system (polypropylene) (Type "B23" or "B23P") .............................................................................. 37
5.17.10 - “80PP Single” system: accessories available ....................................................................................................... 37
6 - START-UP ........................................................................................................................................................................................ 38
6.1 - Start-Up .................................................................................................................................................................................. 38
6.1.1 - Instructions to the user ............................................................................................................................................. 38
6.1.2 - Filling the condensate drain siphon .......................................................................................................................... 38
6.1.3 - Filling the central heating system ............................................................................................................................. 39
6.2 - General recommendations regarding the gas supply ............................................................................................................ 39
6.3 - Type of gas for which the appliance is set ............................................................................................................................. 39
6.4 - Conversion of the appliance from one type of gas to another ............................................................................................... 40
6.5 - Ignition ................................................................................................................................................................................... 42
6.6 - Check the supply gas pressure .............................................................................................................................................. 42
6.7 - Controlling the level of CO2 and any adjustments ................................................................................................................. 43
6.8 - Adjusting the power in central heating mode (Range Rated) ................................................................................................. 44
6.9 - Adjusting the domestic hot water flow rate
............................................................................................................................. 44
7 - USE .................................................................................................................................................................................................. 45
7.1 - Checking the valve opening ................................................................................................................................................... 46
7.2 - Checking the central heating system pressure ...................................................................................................................... 46
