Installation & Operation Manual NCB-E Condensing Combi-Boilers

Transcription

1 Installation & Operation Manual NCB-E Condensing Combi-Boilers Model NCB-210E NCB-240E H NSF/ANSI 72 Keep this manual near this boiler for future reference whenever maintenance or service is required. * The wetted surface of this product contacted by consumable water contains less than one quarter of one percent (0.25%) of lead by weight. WARNING If the information in these instructions is not followed exactly, a fire or explosion may result, causing property damage, personal injury or death. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. What to do if you smell gas Do not try to light any appliance. Do not touch any electrical switch; do not use any phone in your building. Immediately call your gas supplier from a neighbor s phone. Follow the gas supplier s instructions. If you cannot reach your gas supplier, call the fire department. Installation and service must be performed by a qualified installer, service agency or the gas supplier. The installation must conform with local codes or, in the absence of local codes, the National Fuel Gas Code, ANSIZ22.1/NFPA 54 and/or CSA B149.1, Natural Gas and Propane Installation Code.

2 11.4 Component Assembly Diagrams and Parts Lists Case Assembly Appendixes

3 # Description Part # Remark 1 Intake Air Duct Assembly B 2 Exhaust Pipe Assembly A Case A 4 Intake Air Filter A 5 Air Pressure Sensor A 6 PCB A 7 Front Panel A 8 Cover B Appendixes 7

4 Burner Assembly Appendixes

5 # Description Part # Remark 1 Damper A 2 O-Ring (G50) A Fan Bracket A 4 Siphon A A 5 Burner Chamber Ass'y 00105A A 6 Ignition Transformer A A 7 Burner Packing A A A A 8 Heat Exchanger Ass'y A A 9 Thermistor (Exhaust) A 10 Thermistor (Water) A 11 High Limit Switch A 12 Fastener A 1 O-Ring (P19) A 00147A 14 Heat Exchanger Outlet Pipe A A 15 Packing (Circulation Pump) A 16 LWCO (Pressure Sensor) A 17 Siphon Hose A A 18 Return Pipe B B 19 Siphon Fastener A 20 LWCO Packing A A 21 Ignitor A NCB-210E NCB-240E /210E/240E Appendixes 75

6 11.4. Waterway Assembly A A # Description Part # Remark A 1 DHW Heat Exchanger A A 2 Fastener A O-Ring (P18) A 4 DHW Outlet Elbow A 5 Packing A 76 Appendixes

7 # Description Part # Remark 6 Thermistor A 7 DHW Outlet Adaptor A 8 DHW Flow Sensor 00120A 9 O-Ring (P14) A A A 10 DHW Cold Water Adaptor A A 11 O-Ring (P20) A 12 DHW Cold Water Filter A 1 Vent Pipe A 14 Auto Fill Valve A 15 O-Ring (P16) A 16 Fastener A 17 Auto Fill Valve Adaptor Way Outlet Adaptor B 00122A 19 Fastener A 20 -Way Outlet Adaptor A 00121A 21 Packing A 22 Connection Adaptor A 2 -Way Valve B 24 Fastener A 25 Water Fill Pipe A 26 Drain Cock B 27 Space Heating Supply Pipe A 28 Space Heating Supply Adaptor B A 29 Space Heating Return Adapter A A 0 Space Heating Strainer A 1 -Way Outlet Pipe A 2 Circulation Pump Fastener A Circulation Pump A 4 O-Ring (Φ21.7x.5t) A 5 O-Ring (Φ18.8x2.6t) A 6 Space Heating Return Adapter B 00120A 7 SH Supply Pipe A 8 Vent Adaptor A NCB-210E NCB-240E Appendixes 77

8 Fan (Gas) Assembly Appendixes

9 # Description Part # Remark 1 Fan Assembly A /210E/240E 2 Fan Packing A O-Ring (G75) A A 4 Dual Venturi A A A 5 Silence A A 20076A 6 Silence Adaptor A A 7 Venturi Packing A 20077A A (NG) 8 Gas Orifice B (NG) A (LP) A (LP) A (LP) 9 O-Ring (P4) A 10 Gas Adapter A 11 O-Ring (P20) A A 12 Gas Pipe 00128A A 1 Gas Connector A 14 Gas Valve A A /210E/240E 15 Gas Inlet Adaptor A Appendixes 79

10 11.5 Outdoor Temperature Sensor (Optional) Outdoor Temperature Sensor Installation 1. Pull out the sensor body from the cap. 2. Attach the body to the wall using the screws/anchors provided with the device.. Run the wires into the device body through the grommet opening. 4. Connect the wires to the terminal block. 5. Attach the cap to the body Outdoor Reset Control (Available with Optional Outdoor Temperature Sensor) The Outdoor Reset Control feature may be used to enhance energy efficiency while maintaining optimal heating performance. With the Outdoor Reset Control, the space heating temperature setting automatically changes according to the outdoor temperature and the current space heating system application (system load). You can configure the Outdoor Reset Control settings on the front panel by entering the Special Parameter Setting mode. Refer to 10.5 Setting the Parameters on page 56. Note The Outdoor Reset Control feature requires installation of an outdoor temperature sensor, and it only works when the boiler is running in the normal operation mode. It does not work when the boiler is running in either the Minimum (MIN) or Maximum (MAX) mode, or when the boiler s front panel displays a fault. Absolute MAX Outdoor High MIN Outdoor Low MIN F C Navien Outdoor Temperature Sensor Kit Outdoor Temperature Sensor Installation Guidelines Avoid areas with temperature fluctuations by direct sunlight, and where the temperature may not be representative of true outdoor temperature. Best location to install the temperature sensor is on a North or Northeast side of a structure under eaves where the sensor is shielded from direct sunlight. Avoid placing sensor in close proximity of heat sources that may affect correct temperature sensing. (fans, exhausts, vents, lights) Avoid installing the sensor in areas where the sensor is subjected to excessive moisture. Use 18 gauge wiring (thermostat wiring) with no splices. (except at the unit harness connection with yellow leader wire.) Caution should be taken to avoid potential electromagnetic interference (EMI) by routing separately from potential sources such as line voltage wiring. When necessary, shielded cable may be used. Make sure wiring connections are secure before closing the cap. The sensor is a water resistant device. Any damage to the device may require the replacement of the entire component. Absolute MIN F C Space Heating Temperature Setting for the Outdoor Reset Control Feature High Mass Radiant Low Mass Radiant Cast Iron Baseboard Custom Radiator Finned Tube Baseboard Fan Coil The following tables list the default space heating temperature range by system heat load and the applicable outdoor temperature ranges. 80 Appendixes

11 Outdoor Temperature Sensor Installation Guidelines Heat Load Finned Tube Baseboard (default) Fan Coil Cast Iron Baseboard Low Mass Radiant High Mass Radiant Radiators Custom Supply Set-point Range F ( C) F (60-82 C) F ( C) F ( C) F ( C) F ( C) Supply Control (Absolute MIN/ MAX set point) Return Set-point Range F (8-6.5 C) F ( C) F (0-59 C) F ( C) F (21-8 C) F (8-59 C) Return Control (Absolute MIN/ MAX set point) Outdoor Temperature Range and Default Temperature Settings Set Point Range Remarks Outdoor Low Temperature Outdoor High Temperature -4 to 59 F (-20 to 15 C) Outdoor Low Temperature Set Point + 41 F (5 C) to 104 F (40 C) Default: 14 F (-10 C) Default: 70 F (21 C) Appendixes 81

12 Memo

13 Installation & Operation Manual NCB-E Condensing Combi-Boilers Getting Service If your boiler requires service, you have several options for getting service: Contact Technical Support at or on the website: For warranty service, always contact Technical Support first. Contact the technician or professional who installed your boiler. Contact a licensed professional for the affected system (for example, a plumber or electrician). When you contact Technical Support, please have the following information at hand: Model number Serial number Date purchased Installation location and type Error code, if any appears on the front panel display Version : 5.1 (Feb. 25, 2016) Navien, Inc Goodyear lrvine, CA T H E L E A D E R I N C O N D E N S I N G T E C H N O L O G Y