Manuel d'utilisation / d'entretien du produit KNIGHT 400 - 801 du fabricant Lochinvar
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Service Manual Models: 400 - 801 This manual must only be used by a qualified heating installer / serv ice technician. Read all instructions, including this manual and the Knight XL Installation and Operation Manual, before installing. P erform steps in the order given.
2 Hazar d definitions The following defined terms are used thr oug hout this manual to bring attention t o the presence of hazards of various r isk level s or to important information concerning the life of the product.
Service Manual Please r ead bef or e proceeding Installer – R ead all instructions, including this manual and the Knight XL Installation and Operation Man ual, before installing. Pe rfor m steps in the order given. Us e r – This manual is for use only by a qualified heating installer/serv ice technician.
4 Service Manual Please r ead bef or e proceeding When servicing boiler – • T o av oid electric shock, disconnect electrical supply before performing maintenance. • T o av oid severe burns, allow boiler to c ool before performing maintenance. Boiler operation – • Do not block flow of combustion or v entilation air to the boiler .
Service Manual 5 W hat is in this manual? Ser vice Near boiler piping • T y pical system components T he Knight XL display • Display panel r eadout, buttons and their functions Control module inpu.
1 Ser vice 6 Service Manual Y -STRAINER (RECOMMEND ED) BOILER PUM P INDIRECT DOM ESTIC HOT WA T ER T ANK SYSTEM PUM P TO FLOOR DRAIN T O F R O M F R O M S Y S T E M T O S Y S T E M DOMEST IC HO T WA T.
Service Manual 7 1 Ser vice (continued) NA VIGA TION DIAL T he Knight XL display The information on the bottom of the display sho ws the functions of the two SELECT keys (on either c or ner), and the .
1 Ser vice 8 Service Manual 1 Ser vice GAS PRESSURE SW ITCH DHW T HERMOSTA T ROOM THERMOST A T / ZONE CONTRO L FLO W SW ITCH SYSTEM SENSOR OUTDOOR SENSOR BUILDING MANAG EMENT SYSTEM LOW VOL T AGE CONN.
1 Ser vice Service Manual 9 1 Ser vice (continued) LOW VOL T AGE CONNECT ION BOARD SMAR T CONTROL MODULE ALARM BELL LOUVER RELA Y RUN TI ME CONT ACTS BUILDING M ANAGEMENT SYSTEM BOILER PUMP SYSTEM PUM.
1 Ser vice 10 Service Manual 1 Ser vice General Oper ation How the boiler operates The Knight XL uses an advanced stainless st eel heat ex changer and an electronic control module that allo ws fully condensing operation. The blower pulls in gas and air and pushes flue products out of the boiler through the heat ex changer and flue piping.
1 Ser vice Service Manual 1 Ser vice (continued) T able 1-1 Sequence of Operation OPERATION DISPLAY 1. Upon a call for heat, the gas pressure switch(es) must be closed. 2. Once the gas pressure switch(es) are closed, the control turns on the appropriate pumps (system and boiler pump s for space heating, DHW pump for DHW).
1 Ser vice 12 Service Manual 1 Ser vice T able 1-1 (continued from previous page) Sequence of Operation OPERATION DISPLAY 8. If the space heating call for heat is active, and the tank thermostat or sensor st arts a DHW call for heat, the boiler will switch to the DHW mode.
1 Ser vice Service Manual 13 1 Ser vice (continued) Display panel menu access T able 1-2 Use this procedure to access menus from the display panel B UTTON SCREEN ST A TUS OPERA TION DISPLA Y [SHDN] Press the RIGHT SELECT soft key [SHDN]. [YES] Press the LEFT SELECT soft key [YES].
1 Ser vice 14 Service Manual 1 Ser vice Display panel parameter access T able 1-3 This is a typical example of accessing a parameter , shown for parameter T emperature Settings, MIN SH Setpt B UTTON SCREEN ST A TUS OPERA TION DISPLA Y This example shows how to access parameter T emperature Settings.
1 Ser vice Service Manual 15 1 Ser vice (continued) Parameter table T able 1-4 This table lists SMAR T SYSTEM control module parameters and where to access them Menu Sub Item Description See Pa ge Use.
1 Ser vice 16 Service Manual 1 Ser vice Parameter table T able 1-4 (continued from previous page) This table list s SMART SYSTEM control module parameters and where to access them Menu Sub Item Descri.
1 Ser vice (continued) Service Manual 17 Menu Sub Item Description See Pa ge User Access Installer Access Display Modify Display Modify F 18 Boost T emperature 23 No No Ye s Ye s 19 Boost T ime 23 No .
1 Ser vice Service Manual 18 Menu Sub Item Description See Pa ge User Access Installer Access Display Modify Display Modify J 1 BMS T ype (Power / Set Point) 26 No No Ye s Ye s 2 V olts at Min 26 No N.
Service Manual 19 1 Ser vice (continued) Viewable and changeable contr ol parameter s A: General Date and Time The control uses an int ernal clock for the nig ht setback feature and for logging of events.
20 Service Manual 1 Ser vice C: Data Logging Reset last 10 errors The reset last 10 errors function clears the last 10 errors log. D: Functions Service Mode Delay By pressing the pin butt on on the front of the display for fi ve (5) seconds, the control will be placed in Serv ice M ode.
Service Manual 21 1 Ser vice (continued) E: DHW Settings DHW Boiler Set Point W hen a DHW call for heat becomes active, the control will use the DHW boiler set point to determine the firing rate of the boiler based on the boiler outlet water temperatur e.
22 Service Manual 1 Ser vice Figure 1-1 Outdoor Air Reset Curve F: Outdoor R eset The option of contr olling up to three (3) different outd oor resets for lo w outdoor temperatures is a vailable. Low Out door T emperature W hen the outdoor air temperature drops belo w this point, the water te mper ature will be at parameters F3 , F8 and F13 (FIG.
Service Manual 23 1 Ser vice (continued) G: Anti-Cyc ling Anti-Cycling Time Once a SH demand has been satisfied, a set amount of time must elapse before the co ntrol w ill respond t o a new SH demand.
Service Manual 24 1 Ser vice H: Control modes Controlling Sensor The SH controlling sensor paramet er selects the sensor the control will use to r egulate the boiler firing r ate. This par ameter is adjustable by the installer by ac cessing parameter H1 .
Service Manual 25 1 Ser vice (continued) Modbus (Active / Inactive) W hen BMS is set to A CTIVE (see BMS Acti ve / Inactiv e) and the boiler is being controlled thr ough Modbus, set parameter H4 to A CTIVE. Otherwise, set the M odbus parameter to IN A CTIVE.
26 Service Manual 1 Ser vice DHW Pump Anti-Seize Delay If the boiler pump does not r un for 24 hours, it will be tur ned on briefly to prevent it fr om seizing . The length of time it runs is determined by parameter I4 . The r ange of this setting is 0 seconds t o 40 minutes.
Service Manual 27 1 Ser vice (continued) Inst aller Name and Phone Number W hen a Maintenance R eminder timer or counter has expired, a Maintenance R eminder screen will appear on the display . By pr og ramming the installer’ s name and phone number , this information will appear on the Maintenanc e Re minder Screen at that time.
2 Maintenance Service Manual 28 Maintenance and annual star tup T able 2-1 Service and Maintenance Schedules Ser vice tec hnician (see the following p ages for instructions) General: • Address repor.
2 Maintenance (continued) 29 Service Manual Follo w the Ser vice and maintenance pr ocedures given thr oughout this manual and in component literature shipped with the boiler . F ailure to perform the serv ice and maintenanc e could result in damage to the boiler or system.
2 Maintenance Service Manual 30 Flue vent system and air piping 1. V isually inspect the entire flue gas venting system and air piping for blockage, deterioration or leakage. R epair any joints that show signs of leakage. V erify that air inlet pipe is connected and pr operly sealed.
2 Maintenance (continued) 31 Service Manual Inspect ignition and flame sense electrodes 1. R emove the ignition and flame sense electrodes fr om the boiler heat ex changer access co ver . 2. R emove an y deposits accumulated on the ignition/flame sense electrode using sandpaper .
2 Maintenance Service Manual 32 Check flame signal 1. At high fire the flame signal shown on the display should be at least 10 microamps. 2. A lower flame signal may indicate a fouled or damaged flame sense electrode.
3 T r oubleshooting 33 Service Manual Label all wires prior to disconnection when serv icing controls. W iring errors can cause improper and dangerous operation. Alwa ys disconnect po wer to the boiler before serv icing. Failur e to comply c ould result in sever e personal injur y , death, or substantial property damage.
3 T r oubleshooting Service Manual 34 T able 3-1 T roubleshooting Chart - No Display FAULT CAUSE CORRECTIVE ACTION No Display - No 120 vac supplied to unit. • Check external line switch, fuse, or breaker . • Check position of ON/OFF switch. T urn switch to the ON position.
3 T r oubleshooting (continued) 35 Service Manual T able 3-2A - Inlet Water/System Sensor Resistance vs. T emperature T emperature Resistance T emperature Resistance 50 18,780 158 1,990 68 12,263 176 1,458 86 8,194 194 1,084 104 5,592 212 817 122 3,893 140 2,760 T able 3-2B - Outdoor Air Sensor Resistance vs.
3 T r oubleshooting Service Manual 36 T able 3-3 T roubleshooting Chart - Noisy System FAULT CAUSE CORRECTIVE ACTION Noisy Operation - Supply gas problem. Natural gas pressures should be between 4 inches w .c. and 14 inches w .c. LP gas pressures should be between 8 inches w .
3 T r oubleshooting (continued) 37 Service Manual T able 3-4 T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION Gas Pressur e SW (will require a manual reset once the c ondition has been correct ed.
3 T r oubleshooting Service Manual 38 T able 3-4 (continued from previous page) T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION Anti-cy cling The main control board has received a call for heat too quickly after the previous call for heat has ended.
3 T r oubleshooting (continued) 39 Service Manual T able 3-4 (continued from previous page) T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION Flame Sequence (will require a manual reset once the c ondition has been correct ed.
3 T r oubleshooting Service Manual 40 T able 3-4 (continued from previous page) T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION GV/Relay F ail (will require a manual reset once the c ondition has been correct ed.
3 T r oubleshooting (continued) 41 Service Manual T able 3-4 (continued from previous page) T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION Flue T emp High The stack temperature has exceeded the set parameters for the boiler .
3 T r oubleshooting Service Manual 42 T able 3-4 (continued from previous page) T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION Outlet T emp High (continued) Outlet water temperature has exceeded the maximum outlet water temperature.
3 T r oubleshooting (continued) 43 Service Manual T able 3-4 (continued from previous page) T roubleshooting Chart - Fault Messages Displayed on Boiler Interface FAULT DESCRIPTION CORRECTIVE ACTION Low 24 vac 120 vac input to the main control board has dropped below 80 vac.
3 T r oubleshooting Service Manual 44 Combustion Analysis Pr ocedur e 1. T urn the main power off to the boiler b y placing the “On/Off ” switch in the OFF position. 2. Remov e the flue temperature sensor from the flue pipe connection. No t e : Combustion measur ements w ill be made at this point.
45 Service Manual 3 T r oubleshooting (continued) Gas valv e adjustment pr ocedure If adjust ment of the gas valve is deemed necessary , use the following procedur es: ( No te : The procedur es below are model specific.) Figure 3-3 Gas V alve Adjustment: Model 501 Model 501 Locate the throttle adjustment scr ew on top of the gas valv e, see FIG.
46 NOTES.
47 NOTES.
Revision Notes: Revision A (ECO #C05747) initial release. Reflects the new model numbers for the Knight XL upgrade. Revision B (ECO #C06234) reflects changes made to the Service Notification parameter .
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Lochinvar KNIGHT 400 - 801 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Lochinvar KNIGHT 400 - 801 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Lochinvar KNIGHT 400 - 801, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Lochinvar KNIGHT 400 - 801 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Lochinvar KNIGHT 400 - 801, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Lochinvar KNIGHT 400 - 801.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Lochinvar KNIGHT 400 - 801. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Lochinvar KNIGHT 400 - 801 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
