Lochinvar 51 manual

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. P erfor m steps in the or der given. Failure t o comply could r e[...]

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.  DANGER  W ARNING  CAUTION CAUTION NOTICE D ANGER indicates an imminently hazard ous situation which, if not av oided, [...]

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. Refer t o the U ser’ s [...]

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. The c oils are encased in a jacket that c ontains the combustion proc ess. 2. [...]

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... (continued) FRONT OF UNIT 14 13 30 21 15 22 Bottom View 5 Models 51 - 211[...]

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 . 3. N et I=B=R r atings are based on n[...]

The Knight wall mount boiler gas manifold and controls met safe lighting and other performance criteria when the boiler underwent tests specified in ANSI Z21.13 – latest edition. Failure t o keep boiler area clear and fr ee of combustible mate rials, gasoline, and other flammable liquids and vapors can result in severe personal injury , death, or[...]

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" MINIMUM CLEARANCE A ROUND VENT PIP E OPEN FRONT RIGHT 0" MIN IMUM Figure 1-2 Alcove Installation - Minimum Required Clearances TOP 6" MIN IM[...]

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. ’ s 1-1 and 1-2. For spac es that do NOT supply this clearance, provide two openings as shown[...]

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 chloride used for water softening Refrigerant leaks P aint or varnish remov ers H ydroc hloric acid/mur iatic acid Cements and glues Antistatic fabric s[...]

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. Failure t o follow all instructions can result in flue[...]

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. b. Lift the boiler off the wall bracket mounted t[...]

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. Reattac h the w iring connector t o the gas [...]

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 venting options - Sidew all V ent Figure 3-2 S tainless S teel T wo-Pipe Sidewall T ermination - See page 22 for more details 14 Installation & Operatio[...]

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 ertical V ent, Sidewall Air Figure 3-8 S tainless S teel V ertical V ent, Sidewall Air Direct venting options - V er tical V ent Direct venting options[...]

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. Installation must c omply with local requirements and with the N ational Fuel Gas Co[...]

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. 6. Priming and Cementing: a. Handle fittings and pipes carefully t o prevent contamina[...]

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. Seal all joints and seams of the air inlet pipe using either Aluminum Fo il Duct T ape meeting UL Standard 723[...]

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 Z223.1 for U .S. installations or C[...]

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. The acid can eat through the boiler wall, causing serious damage and presenting a possible threat of flue gas spillage or boiler water lea[...]

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. A gas vent e xtending through an exterior wall shall not terminate adjac ent to a wall or below building ext ensions such as eav es, parap[...]

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. • A t least 7 feet abov e any public walkwa y . • A t least 3 feet abov e any forc ed air i[...]

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. 4-1A, page 21. 3. If using the alternate sidewall t ermination do [...]

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. The termination kit must terminat[...]

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, a field-supplied stainless steel scr ew may be used t o secure the two (2) components t ogether when field disassembly is desired for cleaning (see F[...]

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. 4-11). NEVER common v ent or breach v ent this appliance. W hen two[...]

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 Z223.1 for U .S. installations or CSA B149.1[...]

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. Cut a hole for the ve nt pipe. F or either combustible or noncombustible c onstruction, s[...]

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. The t ermination kit must terminate outside the structure and m ust be i[...]

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 .S.A. or 18 inches in Canada) as shown in FIG. 5-4, page 29. If assembly is too shor t [...]

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 vent pipe is rout ed through an existing unused v enting system; or by using the e xisting unused venting syst em as a chase for vent and c ombustion a[...]

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. U se only appro ved venting materials listed in the General V enting Secti[...]

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. It is important [...]

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. Flow rat[...]

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 Y S T E M TO FROM INDIRECT DOMESTIC HOT WATER T ANK TO FLOOR DRAIN AIR SEP ARA TOR EXP ANSION TA NK SYSTEM SENSOR Figure 6-1A Near Boiler Piping w/Y [...]

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 7.5 24 1" UPS26-99F 0011 NRF-36 E7 106 9.8 27 1" UPS26-99F 0013 NRF-36[...]

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 . The use of other near boiler piping configurations could result in impr oper building and system flow rates leading to inad vertent boiler high limit shutdo w ns and poor system pe[...]

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 IN TEMPERA TURE / PRESSURE GAUGE AIR SEP ARA TOR EXP ANSION TA N K BALL V AL VE (TYPICAL) UNION (TYPICAL ) DRAIN DRAIN PO INT (TYPICAL) MAKE UP W A TE[...]

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. OF 12&q[...]

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 BALL VALV E (TYPICAL) UNION (TYPICAL) DRAIN PO INT (TYPICAL) MA KE UP WATE R HOT WATE R OUT BOILER CIRCULAT OR BACKFLOW PREVENTER PRESSURE REDUCING V[...]

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 BOILER CIRCULATOR BACKFLOW PREVENTER PRESSURE REDUCING VALV E PRESSURE GAUGE EXPAN SION TANK MIX ING VALVES (TYPICAL) FLOW CHECK VALVE SYSTEM SUPPLY SENSOR[...]

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 (TYPICAL) DRAIN POI NT (TYPICAL) MA KE UP WATE R HOT WATE R OUT BOILER CIRCULAT OR BACKFLOW PREVENTER PRESSURE REDUCING VAL VE PRESSURE GAUGE EXPANSIO N TAN[...]

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 GAUGE AIR SEP ARA T OR BALL V AL VE (TYPICAL) UNION (TYPICAL) PRESSURE RELIEF VAL VE DRAIN PO INT (TYPICAL) MAKE UP W A TER HOT WAT E R OUT BOILER CIRCULA[...]

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 SEP ARA TOR EXP A NSION TA N K BALL V AL VE (TYPICAL) DRAIN PO INT (TYPICAL ) MA KE UP W A TE R ZONE V AL VES (TYPICAL ) BOILER CIRCULA TOR BOILER 2 ([...]

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 IN TEMPERA TURE / PRESSURE GAUGE AIR SEP ARA TOR EXP ANSION TA N K BALL V AL VE (TYPICAL) UNION (TYPICAL) PRESSURE RELIEF V A L VE DRAIN POINT (TYPICAL[...]

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. Support piping with hanger[...]

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. Check boiler rating plate to determine which fuel the boiler is set for . If set to 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 90 100 125 150 175 200 1/2 175 120 97 82 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 3/4 369 256 205 174 155 141 128 121 11 3 106 95 86 79 74 1 697 477 384 328 292 [...]

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. Do not check for gas leaks with an open flame -- use the bubble test. Failure t o use the bubble test or check for gas leaks can cause severe personal injury , death, or substantial [...]

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.E.C. Class 1. If or iginal wi ring as supplied with boiler must be replac ed, use only ty[...]

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. 8-4. 2. Install the thermostat on the inside wall awa y from influences of dr afts, hot or cold water pipes, lighting fixtures, television, sunlight, or[...]

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. Otherw ise, the SMAR T SYSTEM con[...]

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 PROVING SW ITCH COM NO LOW WA TER CUTOFF OUTDOOR SENS OR T ANK SENSOR SHIELD SHIELD TO NEXT BOILER A B A B F R O M PREVIOUS BOILER ROOM THERMOST A T 1 RO[...]

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. Slope condensate tubing do wn and away fr om the boiler into a drain or condensate neutralizing f[...]

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. Consult local water tr eatment companies for hard water areas (abov e 7 grains hardne[...]

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. Do not proc eed w ith startup if there is an y indicatio[...]

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 .  V erify the boiler and system are full of water and all sy[...]

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. 11-1). Insert a thin wire (such as a paper clip) into the ho[...]

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 . In N ormal M ode, when a DHW demand begins, the control will start the DHW pump, turn off the boiler pump (if r unning), and modulate to bring the outlet temperature t o the DHW boiler set po[...]

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. The blower pulls in air and pushes flue products out of the boiler through the heat ex changer and f[...]

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. There are six (6) limits that can be programmed, as well a[...]

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. The SMAR T SYSTEM will shut off the burner and inhibit relighting whenever an y o[...]

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 . Connect the DHW thermostat or sensor to the terminals on the[...]

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). The fl[...]

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 . The date and time, and the temperature units can also be change[...]

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. 11-1) to set t emperatures, operating conditions, and monit or boiler operation. 11 Oper a ting inf or mation (continued) The information on the bottom of the display sho ws the functions of the tw[...]

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. ST AR T The unit has begun a burn cycle and is checking all safety circ[...]

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). OUTDO OR: The temperatur e read by the outd oor sensor (if connected). INLET T[...]

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. Pr essing the NA VIGA TION dial will show the next fault, NSB (Night Setback) trigger , or ramp delay sett[...]

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 reported problems • Inspect interior; clean and vacuum if necessary; • Clean condensate trap and fill with fresh water • Check for leaks (water[...]

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. Failure t o follow the directions in this manual and component lit [...]

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. See Section 6 - H ydronic Piping for suggest ed best location of expansi[...]

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. If cleaning the flame sense electrode does not impro ve, ground wiring is in good[...]

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 NEUTRAL FLOW CN5-6 CN5-12 CN5-11 X4-2 X4-10 X4-11 INTEGR ATED CONTROL LOW GAS PRESSURE SWI TCH HIGH GAS PRESSURE SWITCH LOUVER RELAY COIL 24VAC LOUVER P[...]

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 EG RATED CONTRO L BK Y GAS VALVE @24 VAC SPAR K ROD TRAN SFOR MER TR2 G HIGH VOLTAGE SPA RK LEAD CAUTION FLAME SEN SOR ALARM CONT ACT S RUN-TI ME CON[...]

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. WBII-I-O Rev C 8/10[...]