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Installation Manual - Air Solutions Inc.

1. 10 NPE 180A 5 NPE 240A 0 0 1 2 3 4 5 6 7 8 9 10 Water Flow GPM 7 2 NPE 180A 240A Flow Rate Graph 12 0 no NPE 180A 1o x NPE 240A m 90 so a m 60 gt Fd 5 0 i 40 3 0 SS 2 0 19 0 0 0 30 60 90 120 150 F 17 7 1 1 15 5 322 48 8 65 5 C AT Temperature Rise Appendix 35 7 3 NPE 180A 240A Pump P Q Curve P Q Curve ft m 30 9 1 25 7 6 20 6 1 15 46 Head ft m 10 3 0 0 00 1 00 2 00 3 00 4 00 5 00 6 00 7 00 Flow GPM e When the system uses an internal circulation pump with the NPE 180A 240A water heaters the flow rate may vary depending on the type and capacity of the AHU in u se e If the system uses an internal circulation pump with the NPE 180A 240A water heaters or pumps manufactured by SunTherm Corporation MMVEOS4NAAA MMVEOMA4NAAA the flow rate will be approximately 3 GPM 36 Appendix LIMITED WARRANTY NAVIEN INC Warranty Period Navien products come with a limited warranty covering parts The following warranty periods begin to run from the date of original installation The date of original installation must be provided to Navien and upon request proof of the original installation date must also be provided to Navien When the product is installed in a new construction the commencement date shall be dated upon whic
2. Outdoor Sensor 12 Wiring the Device 3 1 2 1 Stage Thermostat 1 Stage Control Heating System Set DIP switch SW 3 to Off to configure the system to use a 1 stage thermostat 1 stage control Thermostat H L To AHU W1 To AHU R miee From T S W1 Flow Switch Input From T S R DIP 3 Off Outdoor Sensor 3 1 3 2 Stage Thermostat 2 Stage Control Heating System Set DIP switch SW 3 to On to configure the system to use a 2 stage thermostat 2 stage control ry Thermostat F s 77 L To AHU W1 S To AHU W2 e To AHU R a E Tm TH il tu Flow Switch Input From T S W1 From T S W2 From T S R DIP 3 ON ON BoRS HIA Outdoor Sensor Wiring the Device 13 3 1 4 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 terminal to the AHU R output To AHUY Cooling System Thermostat te L To AHU WI jo E To AHU R
3. Configuring the NPE 180A 240A Water Heater 23 5 3 Parameter Table The following table lists the parameters used to configure the water heater system functions No Mode Display 4 Pump Exercise Operation Time PLY 5 Burn Delay Time ti 6 Pump Post Purge Time ES 7 Outdoor Low Temperature Set point TREHI 8 Outdoor High Temperature Set point pog 9 CH MIN Set point et 10 CH MAX Set point TRADI 11 2 Stage T S Output Heat Capacity TRAR 24 Configuring the NPE 180A 240A Water Heater 5 4 Configuring Water Heater Functions This section describes the water heater functions and provides the information required to configure the parameters for the desired operation 5 4 1 Pump Exercise Operation Time P04 The pump exercise function is designed to prevent the stagnation of hot water in the heating system The pump exercise function operates every 24 hours Pump exercise operation time function sets the desired pump exercise operation time differently depending on the plumbing as well as environmental conditions With this option activated the NPE 180A 240A water heater monitors the pump operation When it detects that a pump has not been used for a specific period it runs the pump for a set duration If the flow rate is not detected while the pump is operating the E438 error message is displayed To change the pump exercise operation time 1 In the Parameter
4. maea A i It Uh Flow Switch Input From T S W1 From T S R Outdoor Sensor 14 Wiring the Device 3 2 Cable Connections Follow the instructions below to connect the cables to the ComfortAir 3 2 1 Connecting the Outdoor Temperature Sensor Cable An outdoor temperature sensor is supplied with the Navien ComfortAir installation kit Insert the exposed wire into the terminal Then tighten the terminal screw with a screwdriver TM SIL IM S L Use thermostat wire 18 gauge wire for the outdoor temperature sensor connection e When installing the outdoor temperature sensor avoid installing it in direct sunlight Wiring the Device 15 3 2 2 Connecting the Thermostat Cables The ComfortAir receives input signals from thermostats to control the AHU Insert the fork connector into the contact Then tighten the terminal screw with a screwdriver 16 Wiring the Device 3 2 3 Connecting the Flow Switch Cables Insert the fork connector into the contact Then tighten the terminal screw with a screwdriver Wiring the Device 17 3 2 4 Connecting the Main Control Connector To connect the ComfortAir to the Navien NPE 180A 240A water heater use the 13 pin main control connector supplied with the Navien ComfortAir Connect on
5. Depending on the DHW flow rate demand simultaneous DHW and heating may not be available When the DHW demand is high DHW supply takes priority and the heating may be temporarily turned off until the DHW demand decreases even when this function is activated About the ComfortAir 7 2 Installing the Device This section provides information required to install the ComfortAir add on controller in an NPE 180A 240A water heater Z WARNING Ensure that you have turned off the power to the water heater before installing the device 2 1 Basic Principles The following diagram shows the basic operation of an NPE 180A 240A water heater system with the ComfortAir add on controller System Diagram NPE 180 240A Water Heater Q Thermostat i Heat Demand Output I Expansion Space Heating Tak an Space Heating Valve Return Cold Water Flow Switch Supply Mixing Valve DHW Supply 8 Installing the Device AN WARNING A mixing valve must be installed in the system in order to limit the DHW output temperature and prevent scalding Setting the mixing valve to 115 120 F is recommended e Install a spring check valve for vertical pipe runs Do not use a swing check valve with vertical piping e Install either a spring check valve or a swing check valve in a horizontal pipe run e An outdoor sensor and a flow switch are supplied with the product e Use 18
6. e Sets the Heating MAX Set point when outdoor reset is ON DIP switch 1 OFF Default 180 F 82 C Heating MAX set Range 36 F 57 5 C 180 F ATIT IC point IOLI 82 C e Cannot be lower than the CH MIN set point 36 F 20 C Unavailable Outdoor reset is OFF DIP switch 1 ON Se e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically e To return to the lt PARAMETER INFORMATION MENU MODES press the Reset button once e If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt 32 Configuring the NPE 180A 240A Water Heater 2 Stage T S Output Heat Capacity P 11 Models with the 2 stage air handler control function W1 W2 can use a 2 stage thermostat or can be automatically controlled by the ComfortAir controller If the DIP switch 3 is OFF When using the automatic 2 stage heating feature the system will modulate between the 1 stage and 2 stage based on the set heat capacity parameter of the water heater This heat capacity value can be adjusted based on the desired modulation point default heat capacity is 25 To change the 2 stage T S output heat capacity 1 In the Parameter information time mode use the Up or Down buttons to select P 11 Then press the Info button to enter 2 stage T S output heat capacity
7. catch bars at the back of the water heater s PCB tray Then pivot the ComfortAir onto the PCB tray until the latches snap on to the catch bars 7 Connect cables to the ComfortAir For more details refer to 3 2 Cable Connections on page 15 8 Set the proper DIP switches for the desired installation setup For more details refer to 1 4 2 Dip Switch Function Table on page 7 9 Replace the PCB tray back into the water heater and secure it with the two screws 10 Close the front cover and secure it with the 4 screws CAUTION Before disconnecting cables inside the unit label all cables Wiring errors can cause improper operation and dangerous situations Verify wiring connections and unit operation after servicing Installing the Device 11 3 Wiring the Device This section provides information required to plan and install the system wiring 3 1 System Wiring 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 Thermostat 2 Stage Control Heating System Set DIP switch SW 3 to Off to configure the system to use a 1 stage thermostat 2 stage control Thermostat E T Te To AHU W1 To AHU W2 l To AHU R I nai Flow Switch Input From T SW1 From T S R
8. e If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt Configuring the NPE 180A 240A Water Heater 27 5 4 4 Outdoor Reset Control PO7 P 10 The Outdoor Reset Control feature can be used to enhance energy efficiency while maintaining optimal heating performance Outdoor Reset Control automatically changes the space heating temperature setting based on the outdoor temperature and the current space heating system application system load To achieve optimal heating performance configure the following set points the Outdoor Low Temperature the Outdoor High Temperature the heating MIN and the heating MAX Set point configuration must be based on the ComfortAir system characteristics and installation environment Refer to the following examples in the graph to configure the Outdoor Reset Control feature Outdoor Reset Curve Setting Temperature F 80 75 70 65 60 55 50 45 40 35 30 25 20 15 10 5 0 5 C 26 6 23 8 21 1 18 3 15 5 12 7 10 0 72 44 1 6 1 1 3 8 6 6 9 4 12 2 15 17 7 20 5 Outdoor Temperature Parameter_Default Parameter_Setting1 Parameter_Setting2 P 07 14 P 07 5 P 07 20 P 08 70 P 08 64 P 08 60 P 09 100 P 09 90 P 09 122 P 10 180 P 10 140 P 10 180 The graph above is an example of a few possible outdoor reset parameter settings For more information about settings refer to the fol
9. information time mode use the Up or Down buttons to select P 04 Then press the Info button to enter the Pump exercise operation time mode 2 Inthe Pump exercise operation time mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Range Description Display Sets the exercise operation time 1 240 sec default 30 sec HEEN e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically To return to the lt PARAMETER INFORMATION MENU MODE press the Reset button once e If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt While the pump is excising the burner will not fire Configuring the NPE 180A 240A Water Heater 25 5 4 2 Burn Delay Time P 05 This function is used to set the burner delay time at an optimal value for the air handler application If there is no burner delay time the water heater might turn on or off once or twice during the air handler delay time To change the burner delay time 1 In the Parameter information time mode use the Up or Down buttons to select P 05 Then press the Info button to enter the Burn delay time mode 2 Inthe Burn delay time mode use the Up or Down buttons to change the value and press the Info button to set to the desired mo
10. minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt Configuring the NPE 180A 240A Water Heater 29 Outdoor High Temperature Set point P 08 To change the outdoor high temperature set point 1 In the Parameter information time mode use the Up or Down buttons to select P 08 Then press the Info button to enter the Outdoor high temperature set point mode 2 Inthe Outdoor high temperature set point mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Item Description Display Sets the outdoor high temperature set point when outdoor reset is ON DIP switch 1 OFF default 70 F Outdoor high s E temperature set ere Eigin point e Range 5 F 15 C 104 F 40 C ILI e Cannot be lower than the Outdoor low temperature set point 9 F 5 C Unavailable Outdoor reset is OFF DIP switch 1 ON Se If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically To return to the lt PARAMETER INFORMATION MENU MODE gt press the Reset button once If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt 30 Configuring the NPE 180A 240A Water Heater Heating MIN Set point P 09 To change the heating MIN set point 1 Inthe Parameter
11. AWG cables for thermostat wiring e Install NSF certified mixing valves and expansion tanks ONLY 2 2 Installing the Device in an NPE 180A 240A Water Heater Follow the instructions to install the Navien ComfortAir in an NPE 180A 240A water heater 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 Installing the Device 9 3 Remove the two screws holding the PCB tray in place and pull out the PCB tray from the unit Remove screws here 4 Verify the current PCB version of the NPE water heater For OLD PCB Version KDC 330 5M P12 The PCB must be replaced with an updated version Remove all the cables and connectors from the PCB and replace with the latest PCB version that is compatible with the ComfortAir kit Reconnect all the cables and connectors to the PCB Proceed to the next step For NEW PCB Version KDC 330 5M P20 The existing PCB can be used Pull out the PCB from the tray but do NOT disconnect any cables or wires Proceed directly to the next step 5 Install the ComfortAir onto the NPE 180A 240A water heater s PCB tray Align the latch at the back of the case with the front lip of the PCB tray 10 Installing the Device 6 Align the two latches at the back of the ComfortAir with the two
12. If no buttons are pressed for 1 hour then it automatically returns to the lt Normal operation mode gt Item Description Display Tes Outdoor reset OFF Dip switch 1 ON T Outdoor T current temperature outdoor Outdoor reset On Dip temperature TASH switch 1 OFF e g 50 F Displays the Outdoor reset OFF Dip U Heating heating switch 1 ON temperature Nae onthe temperature ae based on the Outdoor reset On Dip oes ake current outdoor HARR switch 1 OFF P temperature e g 120 F 22 Configuring the NPE 180A 240A Water Heater 5 2 Entering the R amp D Information Menu This section describes how to enter the R amp D information mode to configure various parameters and control system functions 5 2 1 Entering the R amp D Information Menu Follow the instructions below to enter the R amp D information menu 1 On the Front panel press the Power button to turn off the water heater 2 Enter the R amp D information menu by pressing the Up button three times the Down button three times and then the Up button four more times 3 In the R amp D information menu use the Up or Down buttons to move to 2 PAR Parameter information mode and then press the Info button No Mode Display 1 Technical Information TREE 2 Parameter Information PARI 4 To return to the previous menu R amp D information menu press the Reset button once
13. NAVIEN INC 37 4 Contents 1 About the ComfortAir Navien ComfortAir is an add on controller for the Navien NPE 180A 240A water heaters It adds input and output functions to the NPE 180A 240A water heaters for a combination application where space heating and domestic hot water DHW are supplied simultaneously With this add on controller 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 installation kit Make sure that the installation kit contains the following items before installing the product Navien ComfortAir Installation Manual Add on Controller Main Control Connector Outdoor Temperature Sensor with 13 pin cable for connection to cable NPE 180A 240A water heaters Flow Switch with cable About the ComfortAir 5 1 2 Specifications Refer to the following table for product specifications Items Specifications Model name KDO A100 A Add on controller for Navien NPE 180A 240A water Device type heaters Snap on Installation type onto the NPE 180A 240A water heater PCB tray Main connector socket to water heater Main control connector 13 pin cable Thermostat input terminals Contacts for one thermostat 1 or 2 stage Outdoor sensor connection terminal Contacts for one outdoor sensor Output term
14. NavieN ComfortAir Installation Manual Add on Controller Installation Kit NPE 180A 240A This device is designed to work with NPE 180A 240A models ONLY Z WARNING All Installations should be done only by 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 ELECTRICAL SHOCK HAZARD Disconnect power before installing or servicing This can cause severe personal injury death or substantial property damage if ignored All wiring must be installed in accordance with local regulations of the installation site When Installing this Product 1 Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condition 2 Check the ratings given in the instructions and on the product 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 installation is complete check the product s operation by following the instructions provided in this manual All wiring must be installed in accordance with local regulations of the installation site Contents 1 About the ComfortAir 5 1 1 Included Items 5 1 2 Specifications 6 1 3 CSA P 9 11 Rating 6 1 4 Device Layout 7 1 4 1 Wiring Connec
15. Valve Return Mixing V aiie Domestic Cold Water Flow Switch ove Normal option DHW Supply Set the 2 way valve inside the water heater to EXT For more information about settings refer to Selecting a Recirculation Mode A model only in the Water Heater Installation Manual Z WARNING An anti scalding device must be installed in the system in order to limit the DHW output temperature and prevent scalding Setting the valve to 115 120 F is recommended e Install a spring check valve for vertical pipe runs Do not use a swing check valve with vertical piping e Install either a spring check valve or a swing check valve for a horizontal run An outdoor sensor and a flow switch are supplied with the product e Use 18 AWG wires for thermostat installation e Install certified mixing valves and expansion tanks ONLY 20 Configuring the Device 4 2 DHW Priority Options Refer to the following options to configure the system s DHW supply modes 4 2 1 DHW Priority Mode When the system is configured for the DHW priority mode space heating does not operate if there is DHW demand the flow switch is closed ON Set the DIP switch SW 2 to Off to configure the system to operate Eig elel in the DHW priority mode i PY E 4 2 2 Simultaneous DHW and Space Heating Mode When the system is configured for simultaneous DHW and Space heating mode both DHW and space heating wil
16. de Range Description Display 0 Burn delay time unavailable Sets the pump ON delay time when the Ss 1 120 sec heating is turned on default 30 sec e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically e To return to the lt PARAMETER INFORMATION MENU MODES press the Reset button once e If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt 26 Configuring the NPE 180A 240A Water Heater 5 4 3 Pump Post Purge Time P 06 This function is used to set the post purge time after a combustion cycle is completed To change the pump post purge time 1 In the Parameter information time mode use the Up or Down buttons to select P 06 Then press the Info button to enter the Pump post purge time mode 2 Inthe Pump post purge time mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Range Description Display 0 Pump post purge time unavailable Sets the pump post purge time when heating Ss 1 120 sec stopsina system default 30 sec e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically e To return to the lt PARAMETER INFORMATION MENU MODES press the Reset button once
17. e Installation at any location outside the United States and Canada Other Terms This Limited Warranty is subject further to the terms and conditions set forth herein and as may be further specified in the terms and conditions page located on Navien s website at www navien com WITH THE EXCEPTION OF THIS LIMITED WARRANTY NAVIEN DISCLAIMS ANY OBLIGATION OR LIABILITY WITH RESPECT TO THE PRODUCTS OR THEIR SALE AND USE AND NAVIEN NEITHER ASSUMES NOR AUTHORIZES THE ASSUMPTION OF ANY OBLIGATION OR LIABILITY IN CONNECTION WITH THE PRODUCTS THIS DISCLAIMER INCLUDES ANY OTHER WARRANTIES EXPRESS IMPLIED OR STATUTORY RESPECTING THE PRODUCTS OR ANY PARTS OR COMPONENTS THERE OF INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MERCHANT ABILITY OR FITNESS FOR A PARTICULAR PURPOSE Navien s total liability for any claim arising hereunder shall not exceed the purchase price which you paid for the product NAVIEN SHALL NOT IN ANY EVENT BE LIABLE FOR INDIRECT SPECIAL CONSEQUENTIAL OR LIQUIDATED DAMAGES OR PENALTIES INCLUDING CLAIMS FOR LOST REVENUE PROFITS OR BUSINESS OPPORTUNITIES EVEN IF NAVIEN HAD OR SHOULD HAVE HAD ANY KNOWLEDGE ACTUALOR CONSTRUCTIVE OF THE POSSIBILITY OF SUCH DAMAGES 38 LIMITED WARRANTY NAVIEN INC NavieN ComfortAir Installation Manual Getting Service If your ComfortAir requires service you have several options for getting service e Contact Technical Support at 1 800 519 8794 or on the websi
18. e end of the cable to the connector socket on the ComfortAir PCB Then connect the other end to the connector socket on the NPE 180A 240A water heater PCB MSIL 2M SIL IM 18 Wiring the Device 4 Configuring the Device This section provides the information required to set the desired options for the NPE 180A 240A water heater system with the ComfortAir add on controller 4 1 Pump Control Options CAUTION The drawings in this instruction are intended only as a guide and are not replacements for professional engineering drawings This drawing represents a concept system and does not imply compliance with local building codes Actual installation requirements may vary depending on installation locations and parameters All installation work must be carried out in accordance with all local building codes Verify with local building officials before commencing system installation The following example demonstrates the application of pump control configuration options Configuring the Device 19 A System with the Internal Circulation Pump NPE 180 240A Water Heater Outdoor Sensor CS 8 a i TR ms Thermostat Heat Demand Output m Space Heating Supply p Fxpansion q 4 t _ Tank 74 Check Space Heating ki
19. h the end user takes title to the property APPLICABLE WARRANTY PERIOD Period of Coverage All other parts and components 3 years Warranty Claim Procedures To obtain warranty repair service the end user or homeowner must contact the original installer of your Navien product If the original installer cannot be identified the end user or home owner may contact Navien s Technical Administration Department at 800 519 8794 Proof of purchase is required to obtain warranty service Warranty Service At its option Navien will replace the defective component part in accordance with the terms of this Limited Warranty if it fails in normal use and service during the applicable warranty period identified above The replacement component must be Navien original factory component Navien at its sole discretion may replace the product with a new or refurbished product of comparable quality and design The replacement component or product will be warranted only for the unexpired portion of the original component s applicable warranty period Payment for labor in completing the warranty service is subject to Navien s prior written approval and shall be subject to Navien s schedule of approved labor allowances LIMITED WARRANTY NAVIEN INC 37 Warranty Exclusions Navien s Limited Warranty shall be void in the event of an occurrence of any of the following e Improper installation failure to install in strict complia
20. inal to the air handler unit Contacts for one AHU 1 or 2 stage Connections 1 3 CSA P 9 11 Rating Combo System CSHE WHPF Recovery Efficiency TPF Heat Generator Fan Coil NPE 180A MMVEOS4NAAA 94 0 96 97 0 94 NPE 240A MMVEOMANAAA 95 0 95 96 0 95 6 About the ComfortAir 1 4 Device Layout Refer to the following diagram for the product layout Cc C SS eee CE DIR DIES B o swt elle AHU W1 nu w2 ob Tis wt TS w2 TIS R Outdoor Sensor Flow AHU R d L Switch 1 4 1 Wiring Connection Table Terminal Wiring Connection AHU W1 Connect to AHU W1 AHU W2 Connect to AHU W2 AHU R Connect to AHU R Flow switch Flow switch input terminal T S W1 Connect to thermostat W1 T S W2 Connect to thermostat W2 T SR Connect to thermostat R Outdoor Sensor Outdoor sensor input 1 4 2 Dip Switch Function Table SW DIP 1 4 ON OFF Default DIP 1 Outdoor reset not in use Outdoor reset in use OFF Simultaneous DHW and acd DIP 2 heating DHW priority OFF DIP 3 2 stage thermostat using 1 stage thermostat using OFF DIP 4 Reserved OFF
21. information time mode use the Up or Down buttons to select P 09 Then press the Info button to enter the Heating MIN set point mode 2 Inthe Heating MIN set point mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Item Description Display Heating MIN set point e Sets the Heating MIN set point when outdoor reset is ON DIP switch 1 OFF Default 100 F 37 5C e Range 100 F 37 5 C 140 F 60 C e Cannot be greater than the CH MAX set point 36 F 20 C Unavailable Outdoor reset OFF DIP switch 1 ON e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically e To return to the lt PARAMETER INFORMATION MENU MODES press the Reset button once e If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt Configuring the NPE 180A 240A Water Heater 31 Heating MAX Set point P 10 To change the heating MAX set point 1 Inthe Parameter information time mode use the Up or Down buttons to select P 10 Then press the Info button to enter the Heating MAX set point mode 2 Inthe Heating MAX set point mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Item Description Display
22. l be supplied at the same time However when DHW demand becomes high the system automatically turns off the space heating The system will continue in this mode until it determines that DHW demand has reduced from high demand to moderate or low demand Please see appendix for water heater performance specifications The system determines that DHW demand is high and stops supplying the space heating when the water heater is running at or above 85 of its maximum capacity ON Set the DIP switch SW 2 to On to configure the system to operate CFTog DHW and space heating mode simultaneously Ni wl eee Configuring the Device 21 5 Configuring the NPE 180A 240A Water Heater This section provides information required to properly configure the NPE 180A 240A water heater to setup and utilize the functions provided by the ComfortAir add on controller 5 1 Entering the Service Information Mode Follow the instructions below to access the Service information mode 1 At lt Normal operation mode gt press the Diagnostic button once to access the service information screen 2 If you press the button the value for the selected item is increased or decreased Then the adjusted value is displayed 3 The currently selected information data item is identified with an alphabet character prefix followed by 3 digits of the relevant data 4 Press the Reset button once to return to lt Normal operation mode gt
23. lowing information If the Outdoor Reset On DIP switch 1 OFF is set and the outdoor temperature sensor is not connected or the outdoor temperature sensor value is outside the normal range the 740 error message is displayed and the system operates the same way as with the Outdoor Reset OFF DIP switch 1 ON setting 28 Configuring the NPE 180A 240A Water Heater Outdoor Low Temperature Set point P 07 To change the outdoor low temperature set point 1 Inthe Parameter information time mode use the Up or Down buttons to select P 07 Then press the Info button to enter the Outdoor low temperature set point mode 2 Inthe Outdoor low temperature set point mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Item Description Display e Sets the outdoor low temperature set point when outdoor reset is ON DIP switch 1 OFF default 14 F Outdoor low A temperature set Cy AVAL point e Range 4 F 20 C 59 F 15 C E Cannot be greater than the Outdoor high temperature set point 9 F 5 Unavailable Outdoor reset is OFF DIP switch 1 ON Se e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically e To return to the lt PARAMETER INFORMATION MENU MODES press the Reset button once e If no buttons are pressed for five
24. mode 2 Inthe 2 stage T S output heat capacity mode use the Up or Down buttons to change the value and press the Info button to set to the desired mode Item Description Display e Sets the standard modulating heat Min heat i ooo coe a by 0 5 9 gop e 2 stage T S OFF DIP switch 3 OFF Unavailable 2 stage T S ON DIP switch 3 ON Ss e If no buttons are pressed for 10 seconds or if the Info button is pressed the current parameter value will be saved automatically e To return to the lt PARAMETER INFORMATION MENU MODES press the Reset button once e If no buttons are pressed for five minutes the display will automatically return to the lt PARAMETER INFORMATION MENU MODE gt Configuring the NPE 180A 240A Water Heater 33 6 Maintenance The Navien NPE 180A and NPE 240A water heaters that are used in the DHW heating systems should be properly maintained and flushed on an annual basis Please see the NPE Water Heater Service Manual for more details regarding annual servicing and maintenance 34 Maintenance 7 Appendix This section provides additional information to be considered when you design a hydronic system using an NPE 180A 240A water heater 7 1 NPE 180A 240A Pressure Drop Curve 50 45 gt w w ou a WT N m uw 1 Pressure Loss psi D l
25. nce with the Installation Manual procedures installed by a non licensed installer and installation in violation of applicable rules laws or building codes e Product purchased through the internet other e commerce channels or any installer that obtained the product from a supplier or distributor not authorized by Navien e Failure to perform annual maintenance misuse operation at settings other than those recommended or specified noncompliance with instructions or guidelines set forth in the User s Information Manual e Modification or alteration of the product in any manner including but not limited to removal of any component or part addition of any non approved components relocating or moving the product from its original installation site or any accidental or intentional damage to the Product Installer s failure to fully comply with the warranty service and return policy procedures previously provided to installer and as is available on Navien s website Such policies include but are not limited to the installer s failure to first contact Navien Technical Support while in front of the product for purposes of trouble shooting the identified problem or issue e Any damage malfunction or failure caused by abuse negligence alteration accident fire flood freezing wind lightning and other acts of God Operating using or storing the zone pump controller in a corrosive or contaminated atmosphere or environment
26. te www navien com For warranty service always contact Technical Support first e Contact the technician or professional who installed your zone pump controller e Contact a licensed professional for the affected system for example a plumber or electrician Version 1 21 May 30 2014 oi INaeViIeCN Navien Inc 20 Goodyear Irvine CA 92618 TEL 949 420 0420 FAX 949 420 0430 www navien com
27. tion Table 7 1 4 2 Dip Switch Function Table 7 2 Installing the Device 8 2 1 Basic Principles 8 2 2 Installing the Device in an NPE 180A 240A Water Heater 9 3 Wiring the Device 12 3 1 System Wiring Examples 12 3 1 1 1 Stage Thermostat 2 Stage Control Heating System 12 3 1 2 1 Stage Thermostat 1 Stage Control Heating System 13 3 1 3 2 Stage Thermostat 2 Stage Control Heating System 13 3 1 4 Configuring the Cooling System for a Heating Cooling Combo System 14 3 2 Cable Connections 15 3 2 1 Connecting the Outdoor Temperature Sensor Cable 15 3 2 2 Connecting the Thermostat Cables 16 3 2 3 Connecting the Flow Switch Cables 17 3 2 4 Connecting the Main Control Connector 18 4 Configuring the Device 19 4 1 Pump Control Options 19 4 2 DHW Priority Options 21 4 2 1 DHW Priority Mode 21 4 2 2 Simultaneous DHW and Space Heating Mode 21 5 Configuring the NPE 180A 240A Water Heater 22 5 1 Entering the Service Information Mode 22 5 2 Entering the R amp D Information Menu 23 5 2 1 Entering the R amp D Information Menu 23 Contents 3 5 3 Parameter Table 24 5 4 Configuring Water Heater Functions 25 5 4 1 Pump Exercise Operation Time P04 25 5 4 2 Burn Delay Time P 05 26 5 4 3 Pump Post Purge Time P 06 27 5 4 4 Outdoor Reset Control P07 P10 28 6 Maintenance 34 7 Appendix 35 7 1 NPE 180A 240A Pressure Drop Curve 35 7 2 NPE 180A 240A Flow Rate Graph 35 7 3 NPE 180A 240A Pump P Q Curve 36 LIMITED WARRANTY

Installation Manual - Air Solutions Inc.

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