Navien H2Air, Installation Manual

Page 1: ...y a qualified expert and in accordance with the appropriate Navien manual Installing an electric appliance with improper methods or materials may result in serious injury or death due to fire ELECTRIC...

Page 2: ...roduct to make sure the product is suitable for the application 3 Installers must be trained experienced and licensed service technicians 4 Follow local codes for installation and application After in...

Page 3: ...2 Stage Control Heating System 15 3 1 4 Configuring the Cooling System for a Heating Cooling Combo System 16 3 2 Cable Connections 17 3 2 1 Connecting the Outdoor Temperature Sensor Cable 17 3 2 2 Co...

Page 4: ...4 Contents 6 Maintenance 27 7 Appendix 28 LIMITED WARRANTY NAVIEN INC 30...

Page 5: ...a thermostat 1 or 2 stage and an outdoor sensor can be installed along with a hydronic air handler to add space heating functionality to the system 1 1 Included Items The product is supplied with an i...

Page 6: ...Snap on onto the water heater PCB tray Connections Main connector socket to water heater Main control connector 13 pin cable Thermostat input terminals Contacts for one thermostat 1 or 2 stage Outdoo...

Page 7: ...r input 1 3 2 Dip Switch Function Table SW DIP 1 4 ON OFF Default DIP 1 Outdoor reset not in use Outdoor reset in use OFF DIP 2 Simultaneous DHW and heating DHW priority OFF DIP 3 2 stage thermostat u...

Page 8: ...o install the H2Air add on controller in water heaters WARNING Ensurethat you haveturnedoffthe powerto the water heater beforeinstalling the device 2 1 Basic Principles The following diagram shows the...

Page 9: ...Installing the Device 9 System Diagram for NPE A2 System Diagram for NPE S2...

Page 10: ...ll a spring check valve for vertical pipe runs Do not use a swing check valve with vertical piping Install either a spring check valve or a swing check valve in a horizontal pipe run An outdoor sensor...

Page 11: ...to install the Navien H2Air in water heaters 1 Turn off the power supply to the water heater 2 Remove the water heater s front cover by loosening the four screws securing it to the case 3 For NPE A R...

Page 12: ...with the two catch bars at the back of the water heater s PCB tray Then pivot the H2Air onto the PCB tray until the latches snap on to the catch bars Replace the PCB tray back into the water heater an...

Page 13: ...to 3 2 Cable Connections on page 17 7 Set the proper DIP switches for the desired installation setup For more details refer to 1 3 2 Dip Switch Function Table on page 7 8 Make sure to replace the PCB...

Page 14: ...iring Examples Refer to the following wiring diagrams to properly install wiring for various setups you may need in your system Set DIP switch SW 3 as specified for each configuration 3 1 1 1 Stage Th...

Page 15: ...Heating System Set DIP switch SW 3 to Off to configure the system to use a 1 stage thermostat 1 stage control 3 1 3 2 Stage Thermostat 2 Stage Control Heating System Set DIP switch SW 3 to On to conf...

Page 16: ...Configuring the Cooling System for a Heating Cooling Combo System To configure the cooling system connect the thermostat Y terminal to the AHU cooling input terminal Y and connect the thermostat R te...

Page 17: ...or Cable An outdoor temperature sensor is supplied with the Navien H2Air installation kit Insert the exposed wire into the terminal Then tighten the terminal screw with a screwdriver Use thermostat wi...

Page 18: ...put signals from thermostats to control the AHU Insert the wiring or connector into the contact Then tighten the terminal screw with a screwdriver 3 2 3 Connecting the Flow Switch Cables Insert the fo...

Page 19: ...e the 13 pin main control connector supplied with the Navien H2Air Connect one end of the cable to the connector socket on the H2Air PCB Then connect the other end to the connector socket on the water...

Page 20: ...pump This process will assist in removing the remaining air from the system piping by either using the provided air vent on the internal pump or optional air removal accessories installed on the syst...

Page 21: ...Configuring the Device 21 NPE A2 System with the Internal or Optional External Pump Set the 2 way valve inside the water heater to EXT NPE S2 NPN System with an External Pump...

Page 22: ...the system in order to limit the DHW output temperature and prevent scalding Set the temperature to 115 120 Install a spring check valve for vertical pipe runs Do not use a swing check valve with ver...

Page 23: ...and Space heating mode both DHW and space heating will be supplied at the same time However when DHW demand becomes high the system automatically turns off the space heating The system will continue...

Page 24: ...r more information about the parameter settings refer to the NPE A or NPN Installation Manual No Mode Display 4 Pump Exercise Operation Time 5 Burn Delay Time 6 Pump Post Purge Time 7 Outdoor Low Temp...

Page 25: ...nstallation Manual 5 2 1 Parameter Settings 1 From the Installer Menu select 2 Parameter Settings 2 After entering the parameter setting screen press the Up button or the Down button to switch between...

Page 26: ...button or the Down button to switch between the parameters or to increase or decrease setting values Press the OK Button to select a parameter or to confirm after making changes Item Default value 1...

Page 27: ...vien water heaters that are used in the DHW heating systems should be properly maintained and flushed on an annual basis Please see the Navien Water Heater Installation Manual for more details regardi...

Page 28: ...ix Pump P Q Curve When the system uses the internal circulation pump with the NPE A and NPE A2 water heaters the flow rate may vary depending on the type and capacity of the AHU in use NPE A and NPE A...

Page 29: ...Appendix 29 NPE 150S2 Pressure Loss NPN Pressure Loss...

Page 30: ...n product If the original installer cannot be identified the end user or home owner may contact Navien s Custmer Care Department at 800 519 8794 Proof of purchase is required to obtain warranty servic...

Page 31: ...ct for purposes of trouble shooting the identified problem or issue Any damage malfunction or failure caused by abuse negligence alteration accident fire flood freezing wind lightning and other acts o...

Page 32: ...site www navieninc com For warranty service always contact Technical Support first Contact the technician or professional who installed your zone pump controller Contact a licensed professional for th...