Riello Array AR 2000 Installation And Operation Manual
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Riello Array AR 2000 Installation And Operation Manual

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Array AR 1000 - AR 1500 - AR 2000
US INSTALLATION AND OPERATION MANUAL

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  • Page 1 Array AR 1000 - AR 1500 - AR 2000 US INSTALLATION AND OPERATION MANUAL...
  • Page 2 Array AR 1500 20177313 of the appliance. Used in conjunction with your own knowledge and expertise, it will enable you to install the appliance quickly, Array AR 2000 20177314 easily, and correctly. Please accept our thanks and our congratulations on your choice of product.

  • Page 3: Table Of Contents

    6.3.1 Riello Screen ....... 36 Operating Limits of the Boiler ....15 6.3.2 Cascade Screen .

  • Page 4: General

    GENERAL GENERAL 1.1 Warnings & Cautions Array AR 1000, AR 1500 and AR 2000 MBH Boilers are fully Installers and operating personnel MUST, at all times, observe modulating, high-efficiency condensing units. They represent all safety regulations. The following warnings and cautions a true industry advance that meets the needs of today’s energy are general and must be given the same attention as specific and environmental concerns.

  • Page 5: Safety Instructions

    GENERAL 1.2 Safety Instructions 1.3 General Warning Observe these instructions for your safety. The installation must conform to the requirements of the authority The burner and control must be correctly installed and adjusted to having jurisdiction or, in the absence of such requirements, to the ensure safe and economical operation of the gas boiler.

  • Page 6: Product Description

    PRODUCT DESCRIPTION 2 PRODUCT DESCRIPTION Component Packaging method Anchoring brackets Cardboard box on pallet 2.1 Introduction Thermowell for System Cardboard box on pallet Temperature Sensor • The gas-fired condensing Array boilers are designed to be used 10 Gas filter Cardboard box on pallet in central heating systems.

  • Page 7: Prolonged Shutdown

    PRODUCT DESCRIPTION 2.6 Prolonged Shutdown or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”. After prolonged shutdown, the startup procedures and the safety device test procedures of this manual shall be performed to verify 4.

  • Page 8: Size And Connections

    PRODUCT DESCRIPTION 2.7 Size and Connections ARRAY AR 1000, AR 1500 60.8” 11.5” 10.15” 50.8” 8.5” 11.5” 7.47” 9.48” Dimensions are in inches (*) Mounting feet may be removed during installation to reduce the overall height by 2”. Feet must be re-installed once boiler is in its final location.
  • Page 9 PRODUCT DESCRIPTION ARRAY AR 2000 60.8” 12.12” 10.3” 50.8” 8.8” 11.25” 7.47” 12.1” Dimensions are in inches (*) Mounting feet may be removed during installation to reduce the overall height by 2”. Feet must be re-installed once boiler is in...

  • Page 10: Technical Data

    PRODUCT DESCRIPTION 2.8 Technical Data Unit AR 1000 AR 1500 AR 2000 Boiler Category ASME Sect.IV Type of Gas Natural Gas, Propane* BTU/hr 1,000,000 1,500,000 2,000,000 Max input rate (kW) (293) (440) (586) BTU/hr 100,000 100,000 100,000 Min input rate (kW) (29) (29)
  • Page 11 PRODUCT DESCRIPTION Unit AR 1000 AR 1500 AR 2000 °F Max operating temperature (°C) (90) (90) (90) °F Max HE allowable temperature (°C) (98.9) (98.9) (98.9) °F 5 to 158 5 to 158 5 to 158 Ambient storage temperature (°C) (-15 to 70) (-15 to 70) (-15 to 70)

  • Page 12: Structure

    PRODUCT DESCRIPTION 2.9 Structure 26 25...
  • Page 13 PRODUCT DESCRIPTION Item Description Item Description Outer frame Burner head O-ring Burner flange (outer) Burner gasket Supply pipe Sight glass combustion Purge valve Igniter Gas pipe Burner tube Gas valve Burner flange (inner) Heat exchanger Gasket burner flange Pump Water shutoff valve Brass connection Flow meter Brass fitting...

  • Page 14: Efficiency Curves

    PRODUCT DESCRIPTION 2.10 Efficiency Curves ARRAY AR 1000, AR 1500, AR 2000 100% 100% input 30% input 20% input Return water temperature (°F) @ 36 Degree Rise...

  • Page 15: Regulations

    REGULATIONS 3 REGULATIONS 4 INSTALLATION 4.1 Introduction NOTE: Observe all rules, regulations, standards and guidelines applicable to the installation and operation of this appliance in your country, province, state, and local municipality. This Chapter provides the descriptions and procedures necessary to unpack, inspect and install the Array Boiler Model AR 1000, NOTE: Valves external to the boiler must be fitted with T-handles...

  • Page 16: Installation Clearances

    60.8” 24” 24” Fig. 4 Array AR 2000 Clearances WARNING: Keep the unit area clear and free from all 24” combustible materials and flammable vapors or liquids. 24”...

  • Page 17: Setting The Unit

    In multiple unit installations, it is important to plan the position of each unit in advance. Sufficient space for piping connections and future service/maintenance requirements must also be taken into consideration. All piping must include ample provisions for expansion. 29.5” 12.6” Array AR 2000 Crane Lifting Handling Fig. 7...

  • Page 18: Boiler Location

    INSTALLATION The unit must be installed on a concrete service pad (3.5” - 4” height), with no gradient in any direction, to ensure proper 0.75’’ condensate and water drainage (see Fig. 8). If anchoring the unit refer to Fig. 9 and Fig. 10 for anchor locations. 0.28’’...

  • Page 19: Water Quality Guidelines

    INSTALLATION 4.6 Water Quality Guidelines Excessive water hardness causing a lime buildup in the stainless steel coils or tubes is not a fault of the appliance and is not covered by warranty. Water hardness must fall within the following limits: Water Parameters Units...

  • Page 20: High Limit Safety Switch

    INSTALLATION 4.11 Condensate Drain and Piping inlet block” will appear on the screen. At this point press the Reset button. The error will turn off. The Array Boiler is designed to condense water vapor from the Module level: flue products. Each heat exchanger of the boiler is equipped A Low Water Cut Off (LWCO) sensor is installed on top of the supply with a condensate trap (see Fig.

  • Page 21: Gas Supply Piping

    The maximum condensate flow rate is 7.9 GPH for Array AR 1000, 13.9 GPH for Array AR 1500 and 15.9 GPH for Array AR 2000. The drain line must be removable for routine maintenance.

  • Page 22: Gas Supply Specifications

    INSTALLATION 4.12.4 Gas Type Conversion − A sediment trap / drip leg must be installed on the gas supply piping. − Installation of a union fitting at the appliance gas line The heating unit is factory preset for operating with natural gas. connection is required for ease of service.

  • Page 23: Adjusting And Setting O Limits

    Screw “A” Additional parts (such as a high voltage ignition transformer) may be required for reliable ignition of the propane. Please consult the Riello factory prior to all conversions from natural gas to propane Screw “B” 4.12.5 Adjusting and Setting O Limits −...

  • Page 24: Ac Electrical Power Wiring

    INSTALLATION 4.13 AC Electrical Power Wiring All of the components in the Electrical box are mounted on a DIN rail. External AC power is connected to the unit inside the electrical box, located on the inside of the front doors. Open the front doors and remove the panel mounted in the upper part of the left front door of the unit as shown in Fig.
  • Page 25 INSTALLATION The Main Circuit two-pole switch is accessible on the front door to quickly and safely disconnect electrical service. This breaker does not remove power on the incoming power supply terminals. ⏚ Main Switch Fig. 26 AR 1000, AR 1500 120VAC Power supply connection ⏚...

  • Page 26: Field Control Wiring

    INSTALLATION 4.14 Field Control Wiring connecting an air damper, the Programmable Output 3 must be set to 10 and the damper wires must be connected to terminals 3 Each unit is fully wired from the factory with an internal operating and 4, as shown in Fig.
  • Page 27 INSTALLATION − Do not mix components from different systems. The vent 6" Flue Gas system could fail, causing leakage of flue products into the 6" Air Intake living space. Use only approved materials. Connection − Use of cellular core PVC and CPVC for venting system is not allowed.
  • Page 28 INSTALLATION VENTING CONFIGURATIONS: The following figures show the acceptable piping installation for venting and combustion air. EXHAUST EXHAUST BOILER BOILER Fig. 32 All Combustion Air from Adjacent Indoor Spaces through Fig. 34 All Combustion Air From Outdoors - Inlet Air From Ventilated Indoor Combustion Air Openings Crawl Space and Outlet Air to Ventilated Attic EXHAUST...
  • Page 29 INSTALLATION EXHAUST EXHAUST BOILER BOILER Fig. 36 All Combustion Air from Outdoors through Single Fig. 38 Sealed Combustion Located on Same Side with Exhaust Combustion Air Opening (horizontal) EXHAUST EXHAUST BOILER BOILER Fig. 37 Sealed Combustion Located on Same Side with Exhaust Fig.

  • Page 30: Combustion Air

    INSTALLATION Ventilation air must be provided in either case. Material Standard ANSI/ASTM D1527 PVC Schedule 40 ANSI/ASTM D1785 or D2665 CPVC Schedule 40 ANSI/ASTM F441 Polypropylene ULC S636 Single wall galvanised steel 26 gauge In cold climates it is essential to provide a motorized air inlet damper to control the supply of combustion air and prevent EXHAUST nuisance condensation.

  • Page 31: Ducted Combustion Air

    COMMISSIONING 4.16.3 Ducted Combustion Air pressure back to the desired value. For ducted combustion air installations, the air ductwork must be 5.4 Warnings Concerning the Gas Supply attached directly to the air inlet connection on the sheet metal enclosure. When starting up the unit for the first time the following must be In a ducted combustion air application, the combustion air ducting checked: pressure losses must be taken into account when calculating the...
  • Page 32 COMMISSIONING − Date and Time can be adjusted through the screen below: Ver X.X.XX Ver X.X.XX Fig. 41 Touchscreen Control Panel Stand-by screen Fig. 44 Date & Time screen By touching the logo, the Cascade screen will appear: − After the Date&Time setting, CH modes can be selected accessing the CH MODE settings screen below: Settings Ver X.X.XX...
  • Page 33 COMMISSIONING (see Fig. 24) − CH Mode 1 - Room Themostat & Outdoor Reset: this mode requires an outdoor sensor, in addition to the room accessing the list of parameters through the Service display thermostat. The system functions similar to CH mode −...

  • Page 34: Minimum Water Flow (Heat Exchanger Protection)

    COMMISSIONING 5.5.1 Minimum Water Flow (Heat Exchanger boiler is PID modulated to achieve the DHW store setpoint. Protection) DHW store setpoint is manually set on the CH/DHW Setpoints screen (through the Settings screen). This unit is self-protected against low water flow. A flow meter continuously monitors the water flow to each module.

  • Page 35: Multiple Boiler Cascade Installation And Start-Up

    COMMISSIONING 5.6 Multiple Boiler Cascade Installation and Start-Up Appendix L shows an example of Array boilers installed in a cascade of three units. The built-in control system is capable of managing up to 8 boilers as a single, coordinated heating system. The logical schematic is: Demand: 0-10V / OpenTherm / On-Off System sensor D2 is T outside...

  • Page 36: Operation

    Ver X.X.XX 6.2 Control Panel Description Fig. 59 Riello Screen All Array Series Boilers utilize the Touchscreen Control Panel shown in Fig. 58. This Touchscreen panel contains the basic controls for The R logo is the entry point of the Control System. By touching monitoring the boiler.

  • Page 37: Boiler Screen

    OPERATION − Home button: move back to the R screen; − Performance button: move to the Performance screen of the cascade; − Stats button: not active; − Errors button: move to the Errors screen; − Service button: move to Service screen; −...

  • Page 38: Error Screen

    OPERATION 6.3.6 Error Screen how long service was overdue on the system/appliance which can be useful when handling warranty claims. For each boiler, the Error screen shows the list of the last 40 errors A maximum of 15 Service moments can be logged by the 900PB, occurred on its own modules.

  • Page 39: Display Board Replacement

    OPERATION 6.4 Display board replacement − Press the ▼ key, select "(98) Appliance Settings" and press the ● key System configurations must be performed only by the Technical Assistance Service or by personnel authorized by Appliance Configuration “ ” (97) IO Configuration “...

  • Page 40: Control Board Replacement

    OPERATION 6.5 Control board replacement − With the ▲ / ▼ keys change the value following what is in the following table and press the ● key: Managing Dependent System configurations must be performed only by the Technical Model Par. 98 Assistance Service or by personnel authorized by When replacing the main board, an initial screen with the logo AR 1000...

  • Page 41: Shutdown

    SHUTDOWN SHUTDOWN 8 ENVIRONMENTAL PROTECTION/DISPOSAL Environmental protection is one of the fundamental company policies of the . We regard quality of performance, economy CAUTION: Risk of system damage through frost. and environmental protection as equal objectives. When there is a frost, the heating system can freeze up if it is not Environmental protection laws and regulations are strictly adhered operational, e.g.

  • Page 42: Appendix

    APPENDIX SHUTDOWN APPENDIX APPENDIX A - WIRING DIAGRAM AR 1000, AR 1500 ARRAY 1500 ONLY J3-4 DEP. 3 J3-4 DEP.2 J3-4 MANAGING J3-9 DEP.3 J3-9 DEP. 2 J3-9 MANAGING 16AWG Blue - N 16AWG Black - L 16AWG Blue - N 16AWG Black - L 16AWG Blue - N 20AWG White - N...
  • Page 43 APPENDIX SHUTDOWN APPENDIX WIRING DIAGRAM AR 1000, AR 1500 - MANAGING (*) ARRAY 1000 (*) ARRAY 1500 J7-2 J7-2 CONDENSATE CONDENSATE PRESS. SWITCH PRESS. SWITCH DEPENDENT 2 DEPENDENT 3 MIN+MAX GAS WATER WATER PRESSURE PRESSURE PRESSURE SWITCH SWITCH SWITCH J6-5 FLOWMETER FLUE SENSOR J6-12...
  • Page 44 APPENDIX SHUTDOWN APPENDIX WIRING DIAGRAM AR 1000, AR 1500 - DEPENDENT 2 / 3 FLUE SAFETY LIMIT WATER THERMOSTAT J7-8 PRESSURE FLOWMETER J7-7 SWITCH+ J7-6 FLUE SENSOR CONDENSATE J12-1 PRESSURE J12-4 SWITCH DEPENDENT 2 / 3 J7-2 (*) + CONDENSATE PRESSURE SWITCH FOR J7-3 DEPENDENT 2 ON ARRAY 1500 ONLY J12-5...

  • Page 45: Appendix B - Wiring Diagram Ar 2000

    APPENDIX SHUTDOWN APPENDIX APPENDIX B - WIRING DIAGRAM AR 2000 16AWG Black - L1 J3-4 DEP4 J3-4 DEP3 J3-4 DEP2 J3-4 MANAG. 16AWG Grey - L2 J3-9 DEP4 J3-9 DEP3 J3-9 DEP2 J3-9 MANAG. 12AWG Grey - L2 12AWG Black - L1 Black - L1 12AWG Black - L1 12AWG Grey - L2...
  • Page 46 APPENDIX SHUTDOWN APPENDIX WIRING DIAGRAM AR 2000 - MANAGING J7-2 WATER PRESSURE SWITCH CONDENSATE PRESS. SWITCH DEPENDENT 4 MIN+MAX GAS PRESSURE SWITCH J6-5 FLOWMETER FLUE SENSOR J6-12 11 12 J7-4 9 10 WATER J6-10 J9-4 RETURN T. SENSOR PRESSURE J9-2 J6-3 J6-11 h SWITCH...
  • Page 47 APPENDIX SHUTDOWN APPENDIX WIRING DIAGRAM AR 2000 - DEPENDENT 2 / 3 / 4 FLUE J7-8 PRESSURE FLOWMETER J7-7 SWITCH+ J7-6 CONDENSATE FLUE SENSOR PRESSURE SAFETY LIMIT WATER THERMOSTAT SWITCH DEPENDENT 2 / 3 J12-1 J7-2 J12-4 J7-3 RETURN T. SENSOR J6-5 J6-12 J12-5...

  • Page 48: Appendix C - Connection Diagram

    APPENDIX SHUTDOWN APPENDIX APPENDIX C - CONNECTION DIAGRAM Int. ionization CONNECTION DIAGRAM 905MN CONTROL BOARD 0...10V J9-1 Ignition 0V(GND) J9-3 BURNER J9-2 Open Thermostat interface Spark Return Room Thermostat ON/OFF J9-4 J10-1 J2 1-6 J10-2 J10-5 J10-6 J1-5 MAINS SUPPLY (120VAC, 60Hz) J1-1 COMM.
  • Page 49 APPENDIX SHUTDOWN APPENDIX CONNECTION DIAGRAM 905PB DISPLAY CONNECTION DIAGRAM 905PB DISPLAY 905PB05_3R Connector Function PC interface Connection to MN control/Modbus 905PB05_3R Display: RJ-11 Connector: RS485 / Mod BUS J25-1 J25-2 J25-3 1: GND/VSS J25-4 AL-BUS 2: ModBus_B (= Data -) J25-5 3: ModBus_A (= Data +) +24V...

  • Page 50: Appendix D - Maintenance

    APPENDIX SHUTDOWN APPENDIX APPENDIX D - MAINTENANCE Gas Leak Inspection A qualified and adequately trained technician must perform the Inspect all gas piping to confirm there are no leaks, including the inspection as specified in these instructions before each heating pressure ports of the gas valves.

  • Page 51: Appendix E - Head Available For The System

    APPENDIX SHUTDOWN APPENDIX APPENDIX E - HEAD AVAILABLE FOR THE SYSTEM HEAD AVAILABLE (NO GLYCOL) ∆T = 36°F ∆T = 45°F Array AR 1000 7,5 ft 16,5 ft AR 1500 7 ft 16 ft AR 2000 8 ft 16,5 ft HEAD AVAILABLE (50% MAXIMUM GLYCOL) ∆T = 36°F ∆T = 45°F...

  • Page 52: Appendix F - De-Rating For Altitude Installation

    1,108,631 1,088,700 9,000 1,102,831 1,083,691 1,064,551 1,045,409 10,000 1,057,160 1,038,812 1,020,466 1,002,117 ARRAY AR 2000 Altitude (ft) From 0% to 25% From 25% to 50% From 50% to 75% From 75% to 100% 0-2,000 2,000,000 2,000,000 2,000,000 2,000,000 3,000 1,835,793...

  • Page 53: Appendix G - Troubleshooting Table

    APPENDIX SHUTDOWN APPENDIX APPENDIX G - TROUBLESHOOTING TABLE LOCKOUT CODES Error no. Error Description Checks Solutions E2PROM_READ_ERROR Internal software error Replace the power control board IGNIT_ERROR Three unsuccessful ignition attempts in a- Check gas supply pressure; a- If the gas supply pressure is a row b- Check ignition spark;...
  • Page 54 APPENDIX SHUTDOWN APPENDIX Error no. Error Description Checks Solutions FLUE_SWITCH_NOT_CLOSING The blocked flue sensor is not closed within 10 minutes TSUPPLY_DIFF_ERROR The 2 supply sensors deviate too much for more than 60 seconds TFLUE_DIFF_ERROR The 2 flue sensors deviate too much for more than 60 seconds FILLING_TOO_MUCH Too many automated filling attempts in a...
  • Page 55 APPENDIX SHUTDOWN APPENDIX Error no. Error Description Checks Solutions REFLO2_TOO_LOW Internal software error Replace the power control board Flame is detected in a state in which no FALSE_FLAME Replace the power control board flame is allowed to be seen LOW_WATER_PRESSURE_ERROR Low water pressure error LOW_WATER_PRESSURE_SENSOR Low water pressure BLOCKED_DRAIN...
  • Page 56 APPENDIX SHUTDOWN APPENDIX Error no. Error Description Checks Solutions T_SELECTION3_OPEN Selection 3 sensor open T_OPTIONAL1_OPEN Optional 1 sensor open T_OPTIONAL2_OPEN Optional 2 sensor open T_AMBIENT_OPEN Ambient sensor open T_CHIMNEY_CLOSED Chimney sensor shorted T_EXCHANGE1_CLOSED Exchange 1 sensor shorted T_EXCHANGE2_CLOSED Exchange 2 sensor shorted T_SELECTION1_CLOSED Selection 1 sensor shorted T_SELECTION2_CLOSED...
  • Page 57 APPENDIX SHUTDOWN APPENDIX NOTE − Disconnect both wires. In order to check if the control is functioning properly the following readings can be taken: AL Link 24VDC (with S1 Switch On and open circuit). Voltage is variable while in normal operation depending on data stream. Pressure Switches (ie: Gas Pressure, Water Pressure, Flue Pressure, etc) 3.3VDC while circuit is open.
  • Page 58 APPENDIX SHUTDOWN APPENDIX − Disconnect the multimeter and reconnect the wires, as shown in the picture below. If the multimeter shows “0” (or any other symbol confirming the − electrical continuity between 1 (NC) and 3 (COM) of the air pressure switch), the error on the boiler is due to a lack of water on the hydraulic circuit (or a failure of the pressure switch itself).

  • Page 59: Appendix H - Boiler Installation (Example Drawings)

    APPENDIX SHUTDOWN APPENDIX APPENDIX H - BOILER INSTALLATION (EXAMPLE DRAWINGS) − ARRAY AR 1000 / AR 1500 / AR 2000 Single Unit Installation −...
  • Page 60 APPENDIX SHUTDOWN APPENDIX ARRAY AR 1000 / AR 1500 / AR 2000 Multiple Boiler Installation...

  • Page 61: Appendix I - Venting Size Data

    197 Pa 0.16 in H 40 Pa T supply / return (F°) - 176 / 140 T supply / return (F°) - 104 / 86 ARRAY AR 2000 Maximum Input Minimum Input Maximum Input Minimum Input Exhaust gas mass (weight) 0.52 lb/s...

  • Page 62: Appendix J - Exhaust Terminals And Air Inlet Clearances

    APPENDIX SHUTDOWN APPENDIX APPENDIX J - EXHAUST TERMINALS AND AIR INLET CLEARANCES Direct vent (sealed combustion) Fan assisted appliance (Room air for combustion) Forced air inlet Forced air inlet Gravity air inlet Gravity air inlet Exhaust terminal Exhaust terminal X1 1 foot (305 mm) X1 1 foot (305 mm) X2 See Note 1) X2 See Note 1)
  • Page 63 APPENDIX SHUTDOWN APPENDIX Horizontal venting system (sealed combustion): Vertical venting system (sealed combustion): X ≥ 4” (102 mm); X > 12” (305 mm) Y ≥ 12” (305 mm) Y = 12” (305 mm) above maximum snow level or at least 24” whichever is greater Air intake Vent...

  • Page 64: Appendix K - Sensor Resistance

    APPENDIX SHUTDOWN APPENDIX APPENDIX K - SENSOR RESISTANCE SENSOR RESISTANCE TABLE Vent terminals Temperature °F (°C) Resistance [Ω] Testing tolerance ±10% Vent terminals 32 (0) 27396 41 (5) 22140 50 (10) 17999 59 (15) 14716 68 (20) 12099 77 (25) 10000 86 (30) 8308...

  • Page 65: Appendix L - List Of Parameters (With Ranges And Default Values)

    APPENDIX SHUTDOWN APPENDIX APPENDIX L - LIST OF PARAMETERS (WITH RANGES AND DEFAULT VALUES) Menu item Sub item / Parameter Range Default Value Units User level Boiler Parameters (1) CH Mode 30...90 (86...194) 2: Installer (3) CH Setpoint 30…90 70 (158) °C (°F) 1: User (185) Calc.
  • Page 66 APPENDIX SHUTDOWN APPENDIX Menu item Sub item / Parameter Range Default Value Units User level (52) DHW Instant PID I 0…1255 3: Factory (53) DHW Instant PID D 0…1255 3: Factory (60) Flow Rate Start 0.1…20 l/min 3: Factory (61) Flow Rate Lo Temp Pwr 0.1…20 l/min 3: Factory...
  • Page 67 APPENDIX SHUTDOWN APPENDIX Menu item Sub item / Parameter Range Default Value Units User level 0) Disabled 1) General Pump 2) CH Pump 3) DHW Pump 4) System Pump 5) Cascade Pump 6) Alarm Relay 7) Filling Valve Managing: 2 (125) Prog.
  • Page 68 APPENDIX SHUTDOWN APPENDIX Menu item Sub item / Parameter Range Default Value Units User level 0) Disabled 1) General Pump 2) CH Pump 3) DHW Pump 4) System Pump 5) Cascade Pump 6) Alarm Relay 7) Filling Valve Managing: 2 (187) Prog.
  • Page 69 APPENDIX SHUTDOWN APPENDIX Menu item Sub item / Parameter Range Default Value Units User level (138) Appliance Type 50…55 2: Installer (139) Dair active Yes, No 2: Installer (140) Minimal Flow 0.0…100 l/min 2: Installer (107) Anti-legionella Day Sun…Sat. 2: Installer (108) Anti-legionella Hour 0…23 Hour...
  • Page 70 APPENDIX SHUTDOWN APPENDIX Menu item Sub item / Parameter Range Default Value Units User level (80) Max Setp Offset Up 0...40 (0...72) 20 (36) °C (°F) 2: Installer (81) Start Mod Delay Fact 0…60 Min. 2: Installer (82) Next Module Start Rate 10…100 2: Installer (83) Next Module Stop Rate...

  • Page 71: Appendix M - Flowcharts

    APPENDIX SHUTDOWN APPENDIX APPENDIX M - FLOWCHARTS SINGLE MODULE Module in Stop pump Stand-by Demand for Post pump module ready Start pump Supply Temp Start fan lower than Setpoint Module Blocking CH flow Start burner (*) error is above min_flow? BURN Burn: Based on delta of Supply sensor and Setpoint PID output is determined...
  • Page 72 APPENDIX SHUTDOWN APPENDIX BURNER IGNITION SEQUENCE Start burner Pre-Purge 0 Pre-Purge 1 Fan on ignition speed Fan on ignition Blocking error speed within time? Pre ignition on Ignite: ignition on, Gas Valve open Flame Proving, Checking flame Flame Current Ignition Tries Above Minimal less than 3? Current?
  • Page 73 APPENDIX SHUTDOWN APPENDIX MODULE CASCADE (STAND-ALONE BOILER) Boiler in Stop boiler Locking error stand-by pump Boiler error Locking Present? error? Blocking error Post pump Boiler Heat ready Demand? Calculate Start boiler boiler pump setpoint Boiler Temperature Clear demand Remove all higher than active modules setpoint...
  • Page 74 APPENDIX SHUTDOWN APPENDIX MODULE CASCADE (STAND-ALONE BOILER): ADD/REMOVE MODULE Add module function Delay period for starting new module is 0? Open Air damper Air damper open? Are we allowed to add another dependent? Add dependent to the cascade demand Reload delay time Update demand flags...
  • Page 75 APPENDIX SHUTDOWN APPENDIX BOILER CASCADE Stop system System in pump Locking error stand-by Boiler error Locking Present? error? Blocking error System Post pump Heat completed Demand? Start system Calculate system pump setpoint System Temperature Clear demand Remove all higher than active boilers setpoint Clear demand?
  • Page 76 APPENDIX SHUTDOWN APPENDIX BOILER CASCADE: ADD/REMOVE BOILER Add Boiler function Delay period Are we allowed for starting new to add another boiler is 0? dependent? Add dependent from the Reload delay time cascade demand Update demand flags Remove Boiler function Delay period for Are we allowed to removing boiler...
  • Page 77 APPENDIX SHUTDOWN APPENDIX ERROR CHECKING CYCLE Stand-by Boiler Min/Max Gas pressure Locking error switches are closed? Boiler Blocked Blocking Flue pressure error switch is closed Boiler Water Blocking pressure switch is error closed? Module High limit Locking error sensor is closed? Supply/return/ Blocking Flue sensor are...
  • Page 80 RIELLO S.p.A. 37045 Legnago (VR) Tel. 0442630111 - Fax 044222378 RIELLO NORTH AMERICA 35 Pond Park Road Hingham, Massachusetts U.S.A. 02043 2165 Meadowpine Blvd Mississauga, Ontario Canada L5N 6H6 Tel. (905) 542-0303 www.riello.com/north-america/ www.rielloboilers.com The manufacturer strives to continuously improve all products. Appearance, dimensions, technical specifications, standard equipment and...

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