Instruction/ maintenance manual of the product 51 Lochinvar
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WBII-I-O Rev C Inst allation & Operation Manual Models: 51 - 21 1 T h i s m a n u a l m u s t o n l y b e u s e d b y a qualified heating installer / serv ice technician. R ead all instructions, including this manual and the Knight W all Mount Serv ice M anual, before installing.
2 Hazar d definitions The following defined terms are used thr oug hout this manual t o br ing attention t o the presence of hazards of various r isk level s or to important information concerning the life of the product.
Installation & Operation Manual Please r ead bef or e proceeding Installer – R ead all instructions, including this manual and the Knight W all Mount Serv ice M anual, before installing. P erfor m steps in the or der giv en . Us e r – This manual is for use only by a qualified heating installer/serv ice technician.
Installation & Operation Manual 4 T he Knight Wall Mount Boiler - Ho w it w or ks... 1. Stainless steel heat exc hanger Allows system wat er to flow thr ough specially desig ned coils for maximum heat transfer , while providing protection against flue gas c orrosion.
Installation & Operation Manual 11 17 19 23 10 28 Front View 16 32 20 29 31 3 13 14 7 27 8 6 Left Side (inside unit) 2 25 24 5 4 26 22 18 1 Right Side (inside unit) T he Knight Wall Mount Boiler - Ho w it w or ks.
6 Installation & Operation Manual Ra tings Notes: 1. As an Energy Star P ar tner , Lochin var has determined that Knight wall mount boilers meet the Energy Star guidelines for energy efficiency . 2. The ratings are based on standard test pr ocedures pr escribed by the U nited Stat es Depar tment of Energy .
The Knight wall mount boiler gas manifold and controls met safe lighting and other performance criteria when the boiler underwent tests specified in ANSI Z21.
TOP 6" MIN IMUM LEFT 24" SERVICE 0" MINIMU M FRONT 24" SERVICE 6" MINIMU M BOTTOM 24" SERVICE 0" MINIMUM 1" MINIMUM CLE ARANCE AROUN D HOT WA TER PIPES 1" .
Provide air openings to room: Knight wall mount boiler alone in boiler room 1. N o air ventilation openings into the boiler room ar e needed when clearances around the K night wall mount boiler are at least equal to the SER VICE clear ances shown in FIG.
Product s to avoid: Spray cans containing c hloro/fluorocarbons P ermanent wave solutions Chlorinated waxes/cleaners Chlorine-based sw imming pool chemicals Calcium chloride used for thawing Sodium ch.
W hen removing a boiler from e xisting common v ent system: Do not install the Knight wall mount boiler into a common v ent with any other appliance. This will cause flue gas spillage or appliance malfunction, resulting in possible severe personal injury , death, or substantial property damage.
Installation & Operation Manual 2 Prepar e boiler 12 R emov e boiler from wood pallet 1. After remo ving the outer shipping car ton fr om the boiler , remo ve the parts box. 2. T o remo ve the boiler from the pallet: a. Re move the two (2) lag bolts securing the bottom of the unit to the pallet.
Installation & Operation Manual 13 2 Prepar e boiler (continued) F ASTENERS APPROPRIA TE FOR WALL TYPE QTY : 4 MOUNTING BRACKET (F ACTORY SUPPLIED) WALL : W OOD OR MET AL STUDS ON 16" CENTERS -OR- MASONRY / POURED CONCRETE Figure 2-4 Mounting the Boiler Figure 2-3 Installing Prop ane Orifice 13.
3 Gener al v enting Figure 3-1 PVC/CPVC T wo-Pipe Sidewall T ermination - See page 21 for more details Figure 3-3 PVC/CPVC Concentric Sidewall T ermination - See page 24 for more details Direct ventin.
Figure 3-4 PVC/CPVC T wo-Pipe V ertical T ermination - See page 27 for more details Figure 3-5 S tainless S teel T wo-Pipe V ertical T ermination - See page 27 for more details Figure 3-7 PVC/CPVC V e.
16 Installation & Operation Manual 3 Gener al venting PV C/CPV C V ent piping ma terials U se only the materials listed in T able 3A for vent pipe, and fittings. Failure to c omply could result in sev ere personal injury , death, or substantial property damage.
3 Gener al v enting (continued) T able 3A V ent Pipe, and Fittings 5. Dr y fit ve nt or air piping to ensure proper fit up befor e assembling any joint. The pipe should go a third t o two-thirds int o the fitting to ensure pr oper sealing after cement is applied.
18 Installation & Operation Manual 3 Gener al venting Sealing of T y pe “B” double-wall v ent material or galvanized vent pipe mat erial used for air inlet piping on a sidewall or vertical rooftop C ombustion Air S upply System: a.
3 Gener al venting (continued) R emoving from e xisting vent Follo w the instructions in Section 1, page 11 of this manual when remo v ing a boiler from an e xisting vent system. V ent and air piping V ent and air system: Installation must c omply with local requirements and with the N ational Fuel Gas Code, ANSI Z223.
Air cont amination P ool and laundr y products and c ommon household and hobby products oft en contain fluorine or chlorine compounds. W hen these chemicals pass thr ough the boiler , they can form strong acids.
4 Sidewall direct v enting V ent/air ter mination – sidew all Follo w instructions below when determining vent location t o av oid possibility of severe personal injury , death, or substantial property damage.
4 Sidewall direct v enting 5. Maintain clearances as shown in FIG. ’ s 4-1A thru 4-3B, pages 21 and 22. Also maintain the following: a. V ent must t erminate: • A t least 6 feet from adjac ent walls. • N o closer than 12 inches below roof overhang.
4 Sidewall direct v enting (continued) T er mina tion and fittings 1. The air termination coupling must be oriented at least 12 inches abov e gr ade or sno w line as shown in FIG. 4-1A, page 21. 2. Maintain the r equired dimensions of the finished termination piping as shown in FIG.
4 Sidewall direct v enting Sidewall ter mination – optional concentric v ent Description and usage Lochin var offers optional concentric combustion air and v ent pipe termination kits (Fact or y Kit #CVK3003 - 3" or #CVK3008 - 2"). Both combustion air and vent pipes m ust attach to the t ermination kit.
4 Sidewall direct v enting (continued) Sidewall ter mination – optional concentric v ent models Figure 4-8 Concentric V ent Dimensional Drawing Instead of cementing the smaller pipe to the rain cap,.
26 Installation & Operation Manual 4 Sidewall direct v enting Sidewall ter mination – optional concentric v ent Multiventing sidewall terminations W hen two (2) or more direct v ent appliances are v ented near each other , each applianc e must be individually vented (see FIG.
5 V er tical direct venting V ent/air ter mination – v er tical Follo w instructions below when determining vent location t o av oid possibility of severe personal injury , death or substantial property damage. Installation must c omply with local requirements and with the N ational Fuel Gas Code, ANSI Z223.
5 V er tical direct venting V ent/air ter mination – v er tical Prepar e roof penetrations 1. Air pipe penetr ation: a. Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diamet er . 2. V ent pipe penetr ation: a.
5 V er tical direct venting (continued) V er tical ter mina tion – optional concentric v ent Description and usage Lochin var offers an optional concentric combustion air and vent pipe t ermination kit. Both c ombustion air and vent pipes must attach to the t ermination kit.
30 Installation & Operation Manual 5 V er tical direct venting V er tical ter mina tion – optional concentric v ent Figure 5-6 Concentric V ent Roof Installation Ensure termination height is abov e the roof surface or anticipated snow level (12 inches in U .
Installation & Operation Manual 5 V er tical direct venting (continued) Alter na te v er tical concentric v enting This appliance ma y be installed w ith a conc entric vent arrangement where the v.
Installation & Operation Manual Figure 5-10 Existing V ent as a Chase FLUE EXHAUST AIR INLET FLUE OUTLET EX ISTING CAP SEAL SEAL 5 V er tical direct venting Existing v ent as a chase Follo w all existing termination and clearance requir ements and allowable pipe lengths.
Installation & Operation Manual 33 6 Hy dr onic piping System wa ter piping methods The Knight wall mount is designed to function in a closed loop pressurized system not less than 12 psi. A t emperature and pressure gauge is included t o monitor system pressur e and outlet temperature and should be located on the boiler outlet.
Installation & Operation Manual 34 6 Hy dr onic piping Near boiler piping components 1. Boiler system piping: Boiler system piping MUST be sized per the pipe requirements list ed in T able 6A. R educing the pipe size can restrict the flow rate thr oug h the boiler , causing inadvertent high limit shutdo wns and poor system performance.
Installation & Operation Manual 35 Near boiler piping connections VENT AIR Y- S T R A I N E R (RECOMMENDED) DOMESTIC HOT WATER PUMP CONDENSATE DRAIN SYSTEM PUMP BOILER PUMP F R O MS Y ST E M T O S.
Installation & Operation Manual 36 6 Hy dr onic piping 6 Figure 6-2 Pressure Drop vs. Flow - Models 50 - 210 20°F T emperature Rise Applications Model GPM FT/HD Minimum Pipe Size Pump Grundfos T ACO B & G Armstrong 51 5.1 11 1" UPS26-99F 0011 NRF-36 E7 81 7.
6 Hy dr onic piping (continued) It is requir ed that near boiler piping systems utilize Pr imary/Secondar y configurations as shown in FIG. ’ s 6-3 through 6-10 only .
38 Installation & Operation Manual BOILER INDIRE CT DHW T ANK DOM ESTIC HOT WA T ER CIRCULA TOR BACKFLOW PREVENTER PRESSURE REDUCING V AL VE PRESSURE GAUGE ANTI-SCAL D MIXING V AL VE COLD WAT E R .
39 Installation & Operation Manual INDIRE CT DHW T ANK BACKFLOW PREVENTER PRESSURE REDUCING V AL VE PRESSURE GAUGE ANTI-SCAL D MIXING V AL VE AIR SEP ARA TOR EXP ANSION TA N K BALL V AL VE (TYPICAL ) DRAIN P OINT (TYPICAL ) MA KE U P WAT E R ZONE CI RCULA TORS (TYPICAL ) FLOW CHECK VA LV E (TYPICAL ) NOT T O EXCEED 4 P I PE DIA OR MA X.
40 Installation & Operation Manual 6 Hy dr onic piping BOILER INDIRE CT DHW T ANK DOMESTIC HOT WA TER CIRCULATOR ANTI-SCALD MIX ING VALVE COLD WATE R IN TEMPERATURE / PRESSURE GAUGE AIR SEPARATO R.
6 Hy dr onic piping (continued) DOMESTIC HOT W ATER CIRCULAT OR ANTI-SCALD MIX ING VALVE COLD WATE R IN AIR SEPARATO R BALL VALV E (TYPICAL) DRAIN POI NT (TYPICAL) MA KE UP WATE R HOT WATE R OUT BOILE.
6 Hy dr onic piping Figure 6-7 Multiple Boilers - Multiple T emperatures with DHW Piped as a Zone DOMESTIC HOT W ATER CIRCULATOR ANTI-SCALD MIX ING VALVE COLD WATE R IN AIR SEPARATOR BALL VALVE (TYPIC.
Installation & Operation Manual 43 6 Hy dr onic piping (continued) BOILER INDIRE CT DHW T ANK DOMESTIC HOT WA TER CIRCULA TOR ANTI-SCALD MIXING V AL VE COLD WAT E R IN TEMPERA TURE / PRESSURE GAUG.
Installation & Operation Manual 44 6 Hy dr onic piping INDIRE CT DHW T ANK BACKFLOW PREVENTER PRESSURE REDUCING V AL VE PRESSURE GAUGE ANTI-SCAL D MIXING V AL VE TEMPERA TURE / PRESSURE GAUGE AIR .
Installation & Operation Manual 45 BOILER INDIRE CT DHW T AN K DOMESTIC HOT WA TER CIRCULA TOR BACKFLOW PREVENTER PRESSURE REDUCING V AL VE PRESSURE GAUGE ANTI-SCAL D MIXING V AL VE COLD WAT E R I.
7 Gas connections Connecting gas supply piping 1. Re move the fr ont access panel and refer t o FIG. 7-1 t o pipe gas to the boiler . a. Install a field supplied sediment trap / drip leg upstream of the boiler gas controls. MANUAL SHUTOFF V AL V E (FIELD SUPPLIED) UNION DRIP LEG GAS SUPPL Y Figure 7-1 Gas Supply Piping 2.
7 Gas connections (continued) Failure t o apply pipe sealing compound as detailed in this manual can result in severe personal injury , death, or substantial property damage. Knight wall mount boilers are typically shipped ready t o fire on natural gas.
48 Installation & Operation Manual 7 Gas connections Nominal Iron Pipe Size (Inches) Natural Gas Pipe Cap acity Chart Length of Pipe in Straight Feet for 1/2 PSI 10 20 30 40 50 60 70 80 90 100 125.
49 Installation & Operation Manual 7 Gas connections (continued) W ARNING When re-tightening the set screw , be sure to tighten securely t o prevent gas leaks.
8 Field wiring ELECTRICAL SHOCK HAZARD – For your safety , turn off elect rical power supply before making an y electr ical connections t o avo id possible electr ic shock hazard. Failure t o do so can cause severe personal injury or death. W iring must be N.
51 Installation & Operation Manual 8 Field wiring (continued) T her mosta t 1. Connect the room thermostat or end switch (isolated contact only) to r oom thermostat 1, 2, or 3, as shown in FIG.
52 Installation & Operation Manual 8 Field wiring Boiler management system 1. An exte rnal control may be c onnected to c ontrol either the firing rate or the set point of the boiler . If the external control uses a set of contacts to enable the boiler , connect the contacts t o the Room Thermostat 1 terminals.
53 Installation & Operation Manual 8 Field wiring (continued) LOU VER RELA Y FLOW SW ITCH TA N K T H E R M O S TAT ROOM THERMOST A T 3 SYSTEM SUPPL Y SENS OR BUILDING MANAG EMENT SYSTEM LOUVER PRO.
54 Installation & Operation Manual 9 Condensa te disposal Condensate drain 1. This boiler is a high efficiency appliance that produces condensate. 2. The bottom of the boiler has a 1/2 inch pipe for connection of a 1/2 inch PV C pipe (FIG. 9-1). 3.
10 Star t-up Check/control wa ter chemistr y Do not use petroleum-based cleaning or sealing compounds in the boiler system. Damage to elastomer seals and gask ets in the system could oc cur , resulting in substantial property damage. Hardness less than 7 grains 1.
56 Installation & Operation Manual 10 Star t-up Check f or gas leaks Before starting the boiler , and during initial operation, smell near the floor and around the boiler for gas odorant or an y unusual odor . R emove the fr ont access panel and smell the interior of the boiler enclosure.
57 Installation & Operation Manual 10 Star t-up (continued) Final chec ks before star ting the boiler Read the K night W all Mount Service Manual to familiarize yourself w ith SMAR T SYSTEM c ontrol module operation. R ead th is manual, page 58 for proper steps to start boiler .
10 Star t-up Figure 10-2 Operating Instructions 58 Installation & Operation Manual.
59 Installation & Operation Manual Please note that the brackets ([]) denote screen status. NOTICE 4. Place the boiler into the acti ve position by pr essing the RIGHT SELECT [ON] key (FIG. 11-1, page 67). 5. Locate the pinhole button below the RESET button on the display boar d (FIG.
60 Installation & Operation Manual 10 Star t-up Set domestic hot wa ter (DHW) oper a tion V erify DHW mode There are tw o (2) modes of operation for DHW .
61 Installation & Operation Manual 11 Oper a ting inf or mation General How the boiler operates The Knight wall mount boiler uses an advanced stainless st eel heat ex changer and electronic control module that allo ws fully condensing operation.
62 Installation & Operation Manual 11 Oper a ting inf or mation Ramp delay For syst ems w ith low er flow , the SMAR T SYSTEM can limit the firing rate (when enabled) when a space heating call for heat starts, or when switching from a DHW call for heat t o a space heating call for heat.
63 Installation & Operation Manual 11 Oper a ting inf or mation (continued) Monitor external limit s Connections are pr ovided on the connection board for external limits such as flo w switch, lo w water cutoff, gas pressure switches, and a louv er proving switch.
64 Installation & Operation Manual 11 Oper a ting inf or mation DHW , Night Setback, and Ramp Delay operation with cascade For normal mode DHW operation an y boiler(s) in the Cascade can be selected to pr ovide heat for a DHW call. Select a boiler t o be designated as the DHW boiler .
65 Installation & Operation Manual 11 Oper a ting inf or mation (continued) 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).
66 Installation & Operation Manual 11 Oper a ting inf or mation Sequence of operation (continued) Access modes User The user can adjust space heating and tank target temperatures b y pressing the NA VIGA TION dial when “ SETPOINTS” is flashing at the bottom of the display .
67 Installation & Operation Manual Knight wall mount boiler control module NA VIGA TION DIAL Figure 1 1-1 Control Panel U se the control panel (FIG.
68 Installation & Operation Manual 11 Oper a ting inf or mation Status Display Screens Section Display Description A (Boiler Status Bar) ST ANDBY The unit has not recei ved a call for heat from a r emote thermostat nor has it recei ved a call for heat from a DHW thermostat.
69 Installation & Operation Manual Status Display Screens (cont ’ d) Section Display Description C (Oper ational Informat ion) SYSTEM: The t emperature read by the system supply sensor (if connected). T ANK: The temperature r ead by the tank sensor (if connect ed).
Installation & Operation Manual 70 11 Oper a ting inf or mation Status Display Screens (cont ’ d) Section Display Description E (N A VIGA TION dial function) T urning the NA VIGA TION dial w ill select the next or previous Status Screen.
Installation & Operation Manual 71 Maintenance and annual star tup T able 12A Service and Maintenance Schedules Ser vice technician (see the following p ages for instructions) General: • Address.
Installation & Operation Manual 12 Maintenance Follo w the Ser vice and maintenance pr ocedures giv en throughout this manual and in component lit erature shipped with the boiler . Failure to perform the serv ice and maint enance could result in damage t o the boiler or system.
Installation & Operation Manual Check e xpansion tank 1. Expansion tanks provide space for water t o move in and out as the heating system water e xpands due to temperature incr ease or contracts as the water cools. T anks may be open, closed or diaphragm or bladder t ype.
Installation & Operation Manual 74 12 Maintenance Figure 12-2 Burner Assembly 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 ma y indicate a fouled or damaged flame sense electrode.
Installation & Operation Manual 75 13 Diag r ams BOX DEPICTS OPTIONAL ITEMS LADDER DIAGRAM LBL20148 REV B 120 VAC 24 VAC 120VAC TERMINA L STRIP 120V SUPPLY "L" ON / OFF SWITCH X1-6 F2 NE.
Installation & Operation Manual X1-7 ON/ OFF SW ITC H 1 2 3 4 5 G R R W R T W BK Y BL BLOWER -T HIGH LIMIT SENSOR S1b OPERATIN G SENSOR S1a INLE T SENS OR S2 FLU E SENS OR S3 a FLUE SENSOR S3b INT.
Installation & Operation Manual Notes 77.
Installation & Operation Manual Notes 78.
Installation & Operation Manual Notes 79.
Revision A (ECO #C05747) initial release. Reflect s the new model numbers for the Knight Wall Mount upgrade. Revision B (ECO #C0 6188) reflects updates made to the ladder and wiring diagrams (ECO #C06158). Revision C (ECO #C06234) reflects changes made to the Service Reminder feature.
An important point after buying a device Lochinvar 51 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lochinvar 51 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lochinvar 51 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lochinvar 51 you will learn all the available features of the product, as well as information on its operation. The information that you get Lochinvar 51 will certainly help you make a decision on the purchase.
If you already are a holder of Lochinvar 51, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lochinvar 51.
However, one of the most important roles played by the user manual is to help in solving problems with Lochinvar 51. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lochinvar 51 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
