Related Manuals for RVR Energy Technology CAHA Midi 340
Summary of Contents for RVR Energy Technology CAHA Midi 340
- Page 1 CAHA Midi Floor standing multi-sectional gas boilers Installation, Usage and Maintenance Instructions Models 340, 425, 510 and 600 20180713...
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Page 2: Instructions For The User
Thank you for selecting a CAHA Midi Boiler. This product is the result of extensive research and experience in heating system design. This manual is an integral part of the product and should be retained. Please read it carefully, as it provides important information regarding the installation and maintenance of the product. -
Page 3: Starting The Boiler
STARTING THE BOILER Please ask your installer how to start the boiler. Depending on how your heating system is controlled, this could be via an external timeclock, thermostat, switch or otherwise. Once the boiler volt-free enable contacts are closed, the boiler will commence its starting sequence. -
Page 4: Table Of Contents
CONTENTS Description - Boiler ........................... 6 Technical Data ............................7 Component Matrix ............................8 Dimensions ............................... 8 Operation ..............................9 General ................................9 Central Heating (CH) ............................ 9 4.2.1 On-off room thermostat ........................9 4.2.2 Optional 0-10V ............................. 9 4.2.2.1 0-10V DC % power control .................... - Page 5 CONTENTS INSTALLATION ............................26 Installing the boiler ............................. 26 Frost protection ............................26 Water connection ............................27 6.3.1 Pump ..............................27 6.3.2 Minimum flow ........................... 27 6.3.3 Water-treatment ..........................28 6.3.4 Water connection general ....................... 28 Gas connection ............................29 Air-supply and flue-gas connection ......................
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Page 6: Description - Boiler
DESCRIPTION - BOILER MANOMETER DISPLAY LCD POWER SWITCH FUSE BURNER HOOD SIGHT GLASS FLOW NTC IGNITION ELECTRODE INSPECTION COVER AIR SUPPLY GAS PIPE AIR INTAKE RETARDER OVERHEAT LIMITER SWITCH GAS VALVE FLOW FLUE GAS NTC RETURN FLUE GAS OUT SYPHON SUMP INSPECTION COVER RETURN NTC FILL AND DRAIN VALVE... -
Page 7: Technical Data
TECHNICAL DATA Technical data CAHA Midi series Model Central Heating Nominal input max load (Hi) Nominal input min load (Hi) Nominal ouput max load 80-60 °C 413.1 495.7 578.3 Nominal output min load 80-60°C 82.5 115.6 Efficiency max load 80-60 °C (Hi) 97.2 97.2 97.2... -
Page 8: Component Matrix
COMPONENT MATRIX Overview of main components used in the CAHA Midi: Part Boiler control Honeywell Maxsys S4966V2052 S4966V2052 S4966V2052 S4966V2052 Display (user interface) DSP 49G2193 DSP 49G2193 DSP 49G2193 DSP 49G2193 Fan MVL 230 VAC G3G200-GN20-30 G3G200-GN20-30 G3G250-GN17-01 G3G250-GN17-01 Gas-valve Dungs 230 VAC MBC-700-SE-S02 MBC-700-SE-S02 MBC-700-SE-S02 MBC-700-SE-S02 Venturi Honeywell... -
Page 9: Operation
OPERATION The appliance is not to be used by children or persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge. Children, even if being supervised, must not play with the appliance. In the case of failure or malfunction of the appliance, do not attempt to repair it yourself. Please contact your installer. Repairs must only be carried out by qualified technicians. -
Page 10: 0-10V Dc Setpoint
4.2.2.2 0-10V DC SETPOINT A value between 2 and 10V DC generates a CH setpoint demand proportional to this value between CH minimum flow tem- perature and maximum CH flow temperature. The heat demand is removed when the control signal falls below 1 volt. The minimum and maximum CH flow temperature can be set in the technician menu, advanced CH settings, CH tempera- tures. -
Page 11: Slow Start
4.2.5 SLOW START The boiler uses the “slow start” procedure to prevent the boiler from supplying excessive power in low load situations. After “zero check” APS and closure APS with pre purge ignition starts. Following, a stabilization period, the boiler modulates down to low capacity and maintains this capacity for 1 minute. -
Page 12: Domestic Hot Water (Dhw)
DOMESTIC HOT WATER (DHW) 4.3.1 EXTERNAL STORAGE TANK WITH THERMOSTAT (ELECTRIC 3-WAY VALVE) As standard the DHW configuration is factory pre-set for an external storage tank + tank thermostat. For hydraulic connection of an external storage tank to the boiler via an electric 3 way valve one should either use : - the default configuration 2 pumps: 230 VAC DHW pump (terminal strip C1: 12,13,14) and CH pump (terminal strip C1: 15,16,17) - an electric 3-way valve with a maximum travel time of 255 sec. -
Page 13: Boiler Control
BOILER CONTROL CONTROL PANEL The control panel has 12 buttons and a display as shown in the figure below. PUSH BUTTONS ON CONTROL PANEL Installation, Usage and Maintenance Instructions CAHA Midi... -
Page 14: User Menu
USER MENU By pressing the “menu-button” the display will show the text as given in the figure below. By pressing the button marked “3”in the figure shown, the user menu is accessed. Pressing the button rmarked “5” returns back to the main screen. - Page 15 Installation, Usage and Maintenance Instructions CAHA Midi...
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Page 17: Installer (Technician) Menu
If the button marked “4” (see page 14) is pressed the screen as given in the figure below will appear. Please contact RVR Energy Technology Ltd to receive the technician access code. Once the menu is accessed by entering the code the following options will be shown 1. - Page 18 Installation, Usage and Maintenance Instructions CAHA Midi...
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Page 23: Manual Chimney Sweep Mode
MANUAL CHIMNEY SWEEP MODE For routine maintenance and/or service purposes a CH request can be generated to force the burner to a specific load from minimum to nominal (0-100%). This is only possible if no error condition is present. The chimney sweep function can be started from the user menu and will be active for 15 minutes.While active it is possible to navigate through other menus to check the boiler status and functionality. - Page 24 Installation, Usage and Maintenance Instructions CAHA Midi...
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Page 26: Installation
INSTALLATION INSTALLING THE BOILER The installation must be done in accordance with all local and national codes, regulations and standards, and in accor- dance with the directives of all relevant authorities. 1. The boiler must only be installed in an area where it is allowed to install it. Make sure that this area is protected against the danger of freezing. -
Page 27: Water Connection
WATER CONNECTION 6.3.1 PUMP The boiler does not have a built in CH-pump. Therefore a CH-pump must be mounted separately . Select a pump that matches the hydraulic resistance of the boiler and the installation. The graph below shows the resistance characteristics for the different boiler models For electrical connections see chapter 6.7. -
Page 28: Water-Treatment
▪ There are many products available on the market which pretend to clean and protect heating systems. Unfortunately there are only a few that have really proven this in practice.Therefore RVR Energy Technology only allows the following quality products for water treatment ;... -
Page 29: Water Connection General
A vertical terminal is recommended Roof terminals and extensions and/or condensate trap/collector must be approved by RVR Energy Technology. See page For pressure drop calculation of appliance type B23 use the table for pressure drop per component and the table for total pressure drop calculation. -
Page 30: C63
6.5.3 C63 C63 appliances may only be equipped with Gastec QA materials and terminals or according NEN 14989-2 Note: When using a C63 type flue configuration it is essential to ensure that C63 is allowed in the country were the boiler is installed. It is recommended to use a full aluminium flue system. -
Page 31: Pressure Drop Calculations
6.5.4 PRESSURE DROP CALCULATIONS The first 90 ° bend must be mounted directly to the boiler and followed by the chimney silencer (this bend is not part of the calculation (as it is already taken into account)). Flue-outlet and air-supply calculations: Total pressure drop available for flue-outlet and air-supply is given in the table below. - Page 32 - Column 9: total pressure drop flue gas and air: column 6 + 7 + 8 - Finally add all together column 9 Total pressure drop must be lower than 250 Pa (CAHA Midi 340 and CAHA Midi 425) or 300 Pa (CAHA Midi 510 and CAHA Midi 600).
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Page 33: Installing Flue -Exhaust And Air Inlet
6.5.5 INSTALLING FLUE -EXHAUST AND AIR INLET 6.5.5.1 GENERAL • Do not use materials from different manufacturers for either exhaust or air inlet • Only the manufacturers of flue way and air inlet components as mentioned in this manual may be used •... -
Page 34: Brackets, Mounting
If instructions as written above are not followed and or the materials for air inlet and flue gas exhaust as quoted above are not used RVR Energy Technology can not be held responsible for eventual consequences Installation, Usage and Maintenance Instructions... -
Page 35: Electrical Connection
ELECTRICAL CONNECTION 1. The electrical installation should be in accordance with national and local codes and regulations. 2. As standard the boiler is configured for 230 VAC / 50 Hz 3. The terminal strip is accessible by opening the front cover (unscrew with hexagonal wrench) behind which the control is mounted. -
Page 36: Wiring Diagram
6.6.1 WIRING DIAGRAM Installation, Usage and Maintenance Instructions CAHA Midi... -
Page 37: Ntc Resistance Table (12K)
Legend Burner control Display Connector 230V Connector low voltage CH-P Central heating pump DHW-P Domestic hot water pump PWM-P Modulating pump Appliance pump max 0,8A Heat exchanger NTC1 Flow temperature sensor NTC2 Return temperature sensor NTC3 Domestic hot water sensor or switch NTC4 Outside temperature sensor NTC5... -
Page 38: Pneumatic Connections
PNEUMATIC CONNECTIONS A pneumatic diagram for the CAHA Midi 340 (5 sections) and the CAHA Midi 510 (7 sections) is given in the figure below. Syphon Pressure Switch Air Pressure Switch Gas valve Venturi Restric�on 90 mm Air inlet Sump A pneumatic diagram for the CAHA Midi 425 (6 sections) and the CAHA Midi 600 (8 sections) is given in the figure below. -
Page 39: Commissioning
COMMISSIONING 1. Fill and bleed the system. Fill the boiler until a pressure between 1.5 and 2 bar isachieved. The maximum working pres- sure is 6 bar. The boiler (not the installation!) is automatically bled by a built in automatic air vent. 2. -
Page 40: Gas Category
GAS CATEGORY The types of gas and supply pressures vary by country. In the table below the gas category and supply pressure are listed by country. Countries Countries Category Pressure Countries Countries Category Pressure Austria Italy Belgium I2E(R) 20/25 Lithuania Bulgaria Luxembourg Croatia... -
Page 41: Adjustment % Co And Check Input
ADJUSTMENT % CO AND CHECK INPUT The boiler is equipped with an automatic gas/air regulator. This means that the amount of gas is regulated depending on the amount of air. The % CO2 needs to be adjusted according to the table below ; Type of boiler Gas type Inlet pressure... -
Page 42: Errors
ERRORS GENERAL If there is no data visible on the display, the fuse (10,0 A Slow blow) in the control panel ,near the main switch, should be checked (as well as the position of the on/off switch) and should if required be replaced (after the cause for break down has been determined and rectified). -
Page 43: Dhw Errors
DHW ERRORS Boiler does not respond to DHW heat request - Check the storage tank-NTC or thermostat and its wiring (also see electrical wiring diagram). - Check if DHW is enabled using the control panel Insufficient DHW flow - Dirty filters in taps. - Insufficient water pressure. - Page 44 Hard Lockouts Soft Lockouts Hard Lockout Code Description Soft Lockout Code Description Failed ignition High flue temperature False flame Internal control fault High boiler temperature Reset limit reached Air flow/damper Internal control fault Blower speed DHW sensor shorted Air flow/damper DHW sensor open Flame circuit error Low voltage...
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Page 45: Annual Service
ANNUAL SERVICE Maintenance should only be done by a qualified installer or technician. The following maintenance routine should be done annually (see also 9.1) The appliance is not to be used by children or persons with reduced physical, sensory or mental capabilities, or lack of experience and knowledge. -
Page 46: Service-Maintenance Table
SERVICE-MAINTENANCE TABLE When commissioning the boiler, it is recommended to measure load, CO2, CO, T flow, T return, P air pressure switch and Psyphon pressure switch and write the values down in the table below. Measure these values when the boiler is in equilibrium at maximum load (also see chapter 5.5). During annual maintenance we advise to measure and write down these values also and compare them to the previous values and analyse any changes. - Page 47 Installation, Usage and Maintenance Instructions CAHA Midi...
- Page 48 Contact us: RVR Energy Technology Limited Kenmare Co. Kerry V93 F386 Ireland Sales direct line: +353 (0)64 6689522 Email: sales@rvr.ie...
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