Lochinvar WH 55-399 - Manuals

Page 2 - Hazard definitions; DANGER; Contents

2 Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.  DANGER  WARNING  CAUTION CAUTION NOTICE DANGER indicates an imminently hazardous s...

Page 3 - Installation & Operation Manual; Please read before proceeding; Installer –; Read all instructions,; User –; This manual is for use only; When servicing boiler –; Thoroughly flush the system (without boiler; Freeze protection fluids –; injury or loss of life.; WHAT TO DO IF YOU SMELL GAS; Installation and service must be

Installation & Operation Manual Please read before proceeding Installer – Read all instructions, including this manual and the Knight Wall Mount Service Manual, before installing. Perform steps in the order given. User – This manual is for use only by a qualified heating installer/service techni...

Page 5 - Front View; Bottom View

Installation & Operation Manual 17 11 28 22 10 Front View IMG00161 11 17 4 3 24 2 6 8 7 26 1 33 Left Side (inside unit) IMG00162 27 23 28 16 19 31 30 18 25 5 33 Right Side (inside unit) The Knight Wall Mount Boiler - How it works... (continued) IMG00117 21 13 14 20 15 29 FRONT OF UNIT 32 Bottom ...

Page 6 - Ratings; only; Knight Wall Mount Boiler; Other Specifications; Figure A High Altitude Label Location

6 Installation & Operation Manual Ratings Notes: 1. As an Energy Star Partner, Lochinvar has determined that Knight wall mount boilers meet the Energy Star guidelines for energy efficiency. 2. The ratings are based on standard test procedures prescribed by the United States Department of Energy....

Page 7 - Installation must comply with:; Determine boiler location; Closet and alcove installations; Model

Installation & Operation Manual 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 to keep boiler area clear and free of combustible materials, gasoline, and ot...

Page 8 - Figure 1-2 Alcove Installation - Minimum Required Clearances; Figure 1-1 Closet Installation - Minimum Required Clearances; WARNING; WARNING

1/4" MINIMUM CLEARANCEAROUND HOT W ATER PIPES 1" MINIMUM CLEARANCEAROUND VENT PIPE OPEN FRONT LEFT0" MINIMUM RIGHT0" MINIMUM FRONT6" MINIMUM BOTTOM0" MINIMUM TOP6" MINIMUM RECOMMENDED SERVICE CLEARANCES: FRONT: 24”BOTTOM: 24”LEFT SIDE: 12” Figure 1-2 Alcove Installation -...

Page 9 - Provide air openings to room:; Knight wall mount boiler alone in boiler room; No air ventilation openings into the boiler room are; Wall mounting location; Precautions; Vent and air piping

Installation & Operation Manual Provide air openings to room: Knight wall mount boiler alone in boiler room 1. No air ventilation openings into the boiler room are needed when clearances around the Knight wall mount boiler are at least equal to the SERVICE clearances shown in FIG.’s 1-1 and 1-2....

Page 10 - Areas likely to have contaminants; Table 1A Corrosive Contaminants and Sources; When using an existing vent system to

Products to avoid: Spray cans containing chloro/fluorocarbons Permanent wave solutions Chlorinated waxes/cleaners Chlorine-based swimming pool chemicals Calcium chloride used for thawing Sodium chloride used for water softening Refrigerant leaks Paint or varnish removers Hydrochloric acid/muriatic a...

Page 11 - When removing a boiler from existing

When removing a boiler from existing common vent system: Do not install the Knight wall mount boiler into a common vent 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...

Page 12 - Prepare boiler; Remove boiler from wood pallet; Figure 2-1 Boiler Mounted on Shipping Pallet; Gas conversions; LP Conversion Table; Table 2A LP Conversion Table

Installation & Operation Manual 2 Prepare boiler 12 Remove boiler from wood pallet 1. After removing the outer shipping carton from the boiler, remove the parts box. 2. To remove the boiler from the pallet: a. Remove the two (2) lag bolts securing the bottom of the unit to the pallet. b. Lift th...

Page 13 - Figure 2-4 Mounting the Boiler; Figure 2-3 Installing Propane Orifice; Mounting the boiler

Installation & Operation Manual 2 Prepare boiler (continued) FASTENERS APPROPRIATEFOR W ALL TYPEQTY: 4 MOUNTING BRACKET(FACTORY SUPPLIED) W ALL:W OOD OR METAL STUDS ON 16" CENTERS -OR-MASONRY / POURED CONCRETE Figure 2-4 Mounting the Boiler VENTURI GAS VALVE GROMMET BRASS ORIFICE SCREW S Fig...

Page 14 - Direct venting options - Sidewall Vent

3 General venting 14 Installation & Operation Manual Figure 3-1 Two-Pipe Sidewall Termination - See page 22 for more details Figure 3-2 PVC/CPVC Concentric Sidewall Termination - See page 26 for more details Direct venting options - Sidewall Vent Figure 3-3 Two-Pipe Vertical Termination - See pa...

Page 15 - General; Install vent and combustion air piping; Air intake/vent connections; Combustion Air Intake Connector; Figure 3-6 Near Boiler Air Piping

15 Installation & Operation Manual 3 General venting This appliance requires a special venting system. Use only approved stainless steel, PVC, CPVC or polypropylene pipe and fittings listed in Tables 3D, 3E, and 3G for vent pipe, and fittings. Failure to comply could result in severe personal in...

Page 16 - General venting; Sidewall Termination – Optional; Model Kit Number; Table 3B Concentric Vent Kit Equivalent Vent Lengths; Sizing; Table 3A Air Intake/Vent Piping Sizes

3 General venting Installation & Operation Manual 16 Model 2" Max Vent/ Air 3" Max Vent/ Air 4" Max Vent/ Air 55 *80 feet 100 feet N/A 85 *50 feet 100 feet N/A 110 *40 feet 100 feet N/A 155 N/A 100 feet N/A 199 N/A 100 feet N/A 285 N/A *50 feet 100 feet 399 N/A N/A 100 feet Requireme...

Page 17 - Materials; Air inlet pipe materials:

17 Installation & Operation Manual 3 General venting (continued) Materials Air inlet pipe materials: The air inlet pipe(s) must be sealed. Choose acceptable combustion air inlet pipe materials from the following list: PVC, CPVC, Polypropylene or ABS Dryer Vent or Sealed Flexible Duct (not recomm...

Page 18 - Optional room air; Table 3C Optional Room Air Kit

3 General venting 18 Installation & Operation Manual Air contamination Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the boiler, they can form strong acids. The acid can eat through the boiler wal...

Page 19 - Installing vent and air piping; Table 3D PVC/CPVC Vent Pipe, and Fittings; Approved PVC/CPVC Vent Pipe and Fittings; PVC Schedule 40

3 General venting (continued) 19 Installation & Operation Manual Installing vent and air piping Use only cleaners, primers, and solvents that are approved for the materials which are joined together. NOTICE 1. Work from the boiler to vent or air termination. Do not exceed the lengths given in th...

Page 20 - Figure 3-8 Near Boiler Polypropylene Venting; Centrotherm InnoFlue SW; Table 3F Approved PolypropyleneTerminations; Polypropylene; Centrotherm Eco Systems; Table 3E Polypropylene Vent Pipe and Fittings

3 General venting 20 Installation & Operation Manual The installer must use a specific vent starter adapter at the flue collar connection. The adapter is supplied by the vent manufacturer to adapt to its vent system. See Table 3F for approved vent adapters. NOTICE All vent connections MUST be se...

Page 21 - Table 3G Stainless Steel Vent Pipe and Fittings; Stainless steel vent; Figure 3-9 Near Boiler Stainless Steel Venting; ProTech; FasNSeal

21 3 General venting (continued) Installation & Operation Manual Table 3H Approved Stainless Steel (S.S.) Terminations and Adapters The installer must use a specific vent starter adapter at the flue collar connection, supplied by the vent manufacturer to adapt to its vent system. See Table 3H fo...

Page 22 - Vent/air termination – sidewall; inch vent; Determine location

4 Sidewall direct venting Vent/air termination – sidewall TO BOILER INTAKE AIR CONNECTION FROM BOILER VENT PIPE CONNECTION TERMINATION PLATE BIRD SCREEN GRADE OR SNOW LINE 12” MIN BIRD SCREEN 12” MIN 15” MAX Do not exceed the maximum lengths of the outside vent piping shown in FIG. 4-1B. Excessive l...

Page 23 - Figure 4-2A Clearance to Gravity Air Inlets; Figure 4-3A Clearance to Forced Air Inlets; Sidewall direct venting

Vent/air termination – sidewall 23 Installation & Operation Manual ALTERNATE VENTING ARRANGEMENT (IF SPACE PERMITS) BIRD SCREEN 12” MIN 12” MIN 15” MAX COUPLING TO BOILER INTAKE AIR CONNECTION FROM BOILER VENT PIPE CONNECTION BIRD SCREEN GRADE OR SNOW LINE Figure 4-1C Alternate PVC/CPVC/SS/ Poly...

Page 24 - Figure 4-4A PVC/CPVC Sidewall Termination Assembly; Prepare wall penetrations; Figure 4-4B Polypropylene Sidewall Termination Assembly; Table 4B Sidewall Vent Centerline Dimensions

4 Sidewall direct venting 24 Installation & Operation Manual VENT PIPING GALVANIZED THIMBLE VENT CAP AIR PIPING WALL PLATE VENT PLATE VENT AIR CENTERLINE WIDTH Figure 4-4A PVC/CPVC Sidewall Termination Assembly Prepare wall penetrations 1. Use the factory supplied wall plate as a template to loc...

Page 25 - Multiple vent/air terminations; Field Supplied Option)

4 Sidewall direct venting (continued) 25 Installation & Operation Manual 12" MIN. BETW EEN EDGE OF AIR INLET AND ADJACENT VENT OUTLET VENT / AIR TERMINATION VENT AIR Figure 4-5A Multiple Vent Terminations (must also comply with Figure 4-1A) All vent pipes and air inlets must terminate at the...

Page 26 - Sidewall termination – optional concentric vent; Description and usage; Partially assemble the concentric vent termination kit.; Sidewall termination installation; Determine the best location for the termination kit (see

4 Sidewall direct venting Sidewall termination – optional concentric vent Description and usage Lochinvar offers optional concentric combustion air and vent pipe termination kits (Factory Kit #CVK3003 for 3" diameter - models 155 - 199, #CVK3008 for 2" diameter - models 55 - 110, or #CVK3007...

Page 27 - Sidewall termination – optional concentric vent models; Figure 4-11 Rain Cap to Vent Pipe Alternate Assembly

4 Sidewall direct venting (continued) Sidewall termination – optional concentric vent models Figure 4-9 2" and 3" Concentric Vent Dimensional Drawing (reference Table 3D on page 19) Instead of cementing the smaller pipe to the rain cap, a field-supplied stainless steel screw may be used to s...

Page 28 - Multiventing sidewall terminations; Figure 4-13 Concentric Vent and Combustion Air Termination; CAUTION

28 Installation & Operation Manual 4 Sidewall direct venting Sidewall termination – optional concentric vent Multiventing sidewall terminations When two (2) or more direct vent appliances are vented near each other, each appliance must be individually vented (see FIG. 4-13). NEVER common vent or...

Page 29 - Vertical direct venting; Vent/air termination – vertical; Prepare roof penetrations

5 Vertical direct venting Vent/air termination – vertical ALTERNATE INTAKE LOCATIONS:INTAKE PIPES MAY BE LOCATEDANYWHERE WITHIN 24” OF VENTPIPE BIRD SCREEN(TYPICAL) COUPLING(FIELD SUPPLIED) VENT OUTLET12” MINIMUMABOVE AIR INLET 6” MINIMUMABOVE ROOF /SNOW LINE VENT COMBUSTION AIR 8. Locate terminatio...

Page 30 - Figure 5-2 Vertical Terminations with Multiple Boilers; Vertical termination – optional; Vertical termination installation; Figure 5-4 Concentric Vertical Termination

5 Vertical direct venting 3. Space the air and vent holes to provide the minimum spacing shown in FIG. 5-1A, page 29. 4. Follow all local codes for isolation of vent pipe when passing through floors, ceilings, and roofs. 5. Provide flashing and sealing boots sized for the vent pipe and air pipe. Mul...

Page 31 - Figure 5-6 Concentric Vent Roof Installation

5 Vertical direct venting (continued) Instead of cementing the smaller pipe to the rain cap, a field supplied stainless steel screw may be used to secure the two (2) components together when field disassembly is desired for cleaning (see FIG. 4-9, page 27). When using the alternate screw assembly me...

Page 32 - Alternate vertical concentric; Vent / Air Inlet Size; Table 5A Alternate Vertical Concentric Vent / Chase Sizes; Figure 5-8 Concentric Vent Example 1; Figure 5-10 Existing Vent as a Chase; Existing vent as a chase; must be; sealed to ensure that

32 Installation & Operation Manual Alternate vertical concentric venting Vent / Air Inlet Size Minimum Existing Vent / Chase Size 2" 4" 3" 5" 4" 7" Table 5A Alternate Vertical Concentric Vent / Chase Sizes Figure 5-8 Concentric Vent Example 1 12” MIN. FLUE EXHAUST SEAL CO...

Page 33 - Hydronic piping; System water piping methods

Installation & Operation Manual 33 6 Hydronic piping System water piping methods The Knight wall mount is designed to function in a closed loop pressurized system not less than 12 psi. A temperature and pressure gauge is included to monitor system pressure and outlet temperature and should be lo...

Page 34 - Near boiler piping components; isolation

Installation & Operation Manual 34 6 Hydronic piping Near boiler piping components 1. Boiler system piping: Boiler system piping MUST be sized per the pipe requirements listed in Table 6A. Reducing the pipe size can restrict the flow rate through the boiler, causing inadvertent high limit shutdo...

Page 35 - Near boiler piping connections; Figure 6-1A Near Boiler Piping; Figure 6-1B Near Boiler Piping w/Low Loss Header; Circulator sizing

Installation & Operation Manual 35 Near boiler piping connections AIR Y-STRAINER (RECOMMENDED) DOMESTICHOT W ATERPUMP CONDENSATE DRAIN SYSTEM PUMP BOILER PUMP FR OM SY ST EM TO SY ST EM TO FRO M INDIRECT DOMESTIC HOT W ATER TANK TO FLOOR DRAIN AIR SEPARATOR EXPANSION TANK VENT OUTLET INLET Figur...

Page 36 - 0°F Temperature Rise Applications

Installation & Operation Manual 36 6 Hydronic piping -0.50 0.00 0.50 1.00 1.50 2.00 2.50 3.00 0 2 4 6 8 10 12 14 FT /H D FLOW 55 85 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 0 2 4 6 8 10 12 14 16 18 20 FT /H D FLOW 110 155 0.00 0.20 0.40 0.60 0.80 1.00 1.20 1.40 1.60 1.80 2.00 0 5 10 15 ...

Page 37 - NOTICE; Variable speed pump option; Table 6B Recommended Variable Speed Pumps; Variable speed pump setup; VFD PUMP

6 Hydronic piping (continued) It is recommended that near boiler piping systems utilize Primary/Secondary configurations as shown in FIG.’s 6-3 through 6-9 only. The use of other near boiler piping configurations could result in improper building and system flow rates leading to inadvertent boiler h...

Page 38 - BOILER

38 Installation & Operation Manual BOILER INDIRECT DHW TANK DOMESTIC HOT WATER CIRCULATOR BACKFLOW PREVENTER PRESSURE REDUCING VALVE PRESSUREGAUGE ANTI-SCALD MIXING VALVE COLD WATER IN TEMPERATURE / PRESSURE GAUGE AIR SEPARATOR EXPANSION TANK BALL VALVE (TYPICAL) UNION (TYPICAL) PRESSURE RELIEF ...

Page 43 - Figure 6-8 Single Boiler - Multiple Temperature - DHW Priority

Installation & Operation Manual 43 6 Hydronic piping (continued) BOILER INDIRECT DHW TANK DOMESTIC HOT WATER CIRCULATOR ANTI-SCALDMIXING VALVE COLD WATERIN TEMPERATURE / PRESSURE GAUGE AIR SEPARATOR BALL VALVE (TYPICAL) UNION (TYPICAL) DRAIN POINT (TYPICAL) MAKE UP WATER HOT WATER OUT BOILERCIRC...

Page 48 - Gas connections; Connecting gas supply piping; Figure 7-1 Gas Supply Piping

48 Installation & Operation Manual 7 Gas connections Connecting gas supply piping 1. Remove the front access panel and refer to FIG. 7-1 to pipe gas to the boiler. a. Install a field supplied sediment trap / drip leg upstream of the boiler gas controls. MANUAL SHUTOFF VALVE (FIELD SUPPLIED) UNIO...

Page 49 - Figure 7-2 Inlet Pipe with Backup Wrench

49 Installation & Operation Manual 7 Gas connections (continued) Failure to 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 to fire on natural gas. Check boil...

Page 50 - Nominal; Natural Gas Pipe Capacity Chart; Table 7A Natural Gas Pipe Size Chart; Check inlet gas supply

50 Installation & Operation Manual 7 Gas connections Nominal Iron Pipe Size (Inches) Natural Gas Pipe Capacity 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 12...

Page 51 - Gas Pressure; DETAIL A; Figure 7-3 Inlet Gas Supply Check

51 Installation & Operation Manual 7 Gas connections (continued)  WARNING When re-tightening the set screw, be sure to tighten securely to prevent gas leaks. Do not check for gas leaks with an open flame -- use the bubble test. Failure to use the bubble test or check for gas leaks can cause sev...

Page 52 - Field wiring; Figure 8-2 Line Voltage Field Wiring Connections; Figure 8-1 Remove Bezel; Low voltage connections; Route all low voltage wires through the knockouts in the; Line voltage connections; Connect 120 vac power wiring to the line voltage terminal

52 Installation & Operation Manual 8 Field wiring ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death. Wiring must be N.E.C. Class ...

Page 54 - Boiler management system; An external control may be connected to control either; Runtime contacts; By installing the system supply sensor into the supply

54 Installation & Operation Manual 8 Field wiring Boiler management system 1. An external control may be connected to control 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 to the Heat/Loop Demand 1...

Page 55 - Figure 8-4 Low Voltage Field Wiring Connections; IM

55 Installation & Operation Manual 8 Field wiring (continued) Figure 8-4 Low Voltage Field Wiring Connections LOU VER R E LAY TA N K T H ER M O STAT H E AT / L OOP DE MA ND 3 SY STEM SU PPLY SEN S O R BU ILD IN G MA N A G E ME NT SY STEM LO W W A TE R CU T O FF OU T D OO R SEN S O R TA N K SEN S...

Page 56 - Condensate disposal; Condensate drain; Figure 9-1 Condensate Disposal

56 Installation & Operation Manual 9 Condensate disposal Condensate drain 1. This boiler is a high efficiency appliance that produces condensate. 2. The bottom of the boiler has a 1 1/4 inch pipe for connection of the condensate trap (FIG. 9-1). 3. Slope condensate tubing down and away from the ...

Page 57 - Check/control water chemistry; Hardness less than 7 grains; Fill and test water system

57 Installation & Operation Manual 10 Start-up Check/control water chemistry Do not use petroleum-based cleaning or sealing compounds in the boiler system. Damage to elastomer seals and gaskets in the system could occur, resulting in substantial property damage. Hardness less than 7 grains 1. Co...

Page 58 - Check for gas leaks; Figure 10-1 Condensate Trap

58 Installation & Operation Manual 10 Start-up Check for gas leaks Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Remove the front access panel and smell the interior of the boiler enclosure. Do not procee...

Page 59 - Final checks before starting the boiler

59 Installation & Operation Manual 10 Start-up (continued) Final checks before starting the boiler  Read the Knight Wall Mount Service Manual to familiarize yourself with SMART SYSTEM control module operation. Read this manual, pages 60 and 61 for proper steps to start boiler.  Verify the boil...

Page 61 - Figure 10-3 Operating Instructions - Model 399

Installation & Operation Manual 61 10 Start-up (continued) Figure 10-3 Operating Instructions - Model 399

Page 62 - Check flame and combustion; Table 10A Flue Products Chart

Installation & Operation Manual 10 Start-up 62 Please note that the brackets ([]) denote screen status. NOTICE 4. Place the boiler into the active position by pressing the RIGHT SELECT [ON] key (FIG. 11-1, page 70). 5. Locate the pinhole button below the RESET button on the display board (FIG. 1...

Page 63 - date and temperature unit.

63 Installation & Operation Manual 10 Start-up (continued) Set domestic hot water (DHW) operation Verify DHW mode There are two (2) modes of operation for DHW. In Normal Mode, when a DHW demand begins, the control will start the DHW pump, turn off the boiler pump (if running), and modulate to br...

Page 64 - Operating information; How the boiler operates; Assume that both Heat/Loop Demand 1 and Heat/; Temperature control

Installation & Operation Manual 11 Operating information General How the boiler operates The Knight wall mount boiler uses an advanced stainless steel heat exchanger and electronic control module that allows fully condensing operation. The blower pulls in air and pushes flue products out of the ...

Page 65 - Protection features

65 Installation & Operation Manual 11 Operating information (continued) Ramp delay For systems with lower flow, the SMART 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 to a space heating call for heat. There ...

Page 66 - Boiler temperature regulation

66 Installation & Operation Manual 11 Operating information Monitor external limits Connections are provided on the connection board for external limits such as flow switch, low water cutoff, gas pressure switches, and a louver proving switch. The SMART SYSTEM will shut off the burner and inhibi...

Page 67 - Sequence of the cascade; Start; Cascade; Low water cutoff protection; The SMART SYSTEM control module uses temperature; Outdoor reset operation, if used; Target temperature with outdoor reset

67 Installation & Operation Manual 11 Operating information (continued) DHW, Night Setback, and Ramp Delay operation with cascade For Normal Mode DHW operation any boiler(s) in the Cascade can be selected to provide heat for a DHW call. Select a boiler to be designated as the DHW boiler. Connect...

Page 68 - Sequence of operation; OPERATION; The control turns on power to the louver relay. The louver

68 Installation & Operation Manual 11 Operating information 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 pumps for space h...

Page 69 - Access modes; User; SETPOINTS” is; Installer; Saving parameters; (reference the Parameter Table in; To save parameters and exit programming:; If the boiler is not part of a Cascade, and both the space heating

69 Installation & Operation Manual 11 Operating information (continued) Access modes User The user can adjust space heating and tank target temperatures by pressing the NAVIGATION dial when “  SETPOINTS” is flashing at the bottom of the display. The date and time, and the temperature units can ...

Page 70 - Knight wall mount boiler control module; NAVIGATION DIAL; Figure 11-1 Control Panel

70 Installation & Operation Manual Knight wall mount boiler control module NAVIGATION DIAL Figure 11-1 Control Panel Use the control panel (FIG. 11-1) to set temperatures, operating conditions, and monitor boiler operation. 11 Operating information The information on the bottom of the display sh...

Page 71 - Status Display Screens; Figure 11-2 Status Display Screen

71 Installation & Operation Manual 11 Operating information (continued) Status Display Screens Section Display Description A (Boiler Status Bar) STANDBY The unit has not received a call for heat from a remote thermostat nor has it received a call for heat from a DHW thermostat. START The unit ha...

Page 72 - NIGHT SETBACK

72 Installation & Operation Manual 11 Operating information Status Display Screens (cont’d) Section Display Description C (Operational Information) SYSTEM: The temperature read by the system supply sensor (if connected). TANK: The temperature read by the tank sensor (if connected). OUTDOOR: The ...

Page 74 - Maintenance and annual startup; Table 12A Service and Maintenance Schedules; Service technician; (see the following pages for instructions); Owner maintenance; (see the Knight Wall Mount User’s Information; Maintenance

Installation & Operation Manual 74 Maintenance and annual startup Table 12A Service and Maintenance Schedules Service technician (see the following pages for instructions) General: • Address reported problems • Inspect interior; clean and vacuum if necessary; • Clean condensate trap and fill wit...

Page 75 - Address reported problems; Figure 12-1 Condensate Trap

Installation & Operation Manual 12 Maintenance (continued) Follow the Service and maintenance procedures given throughout this manual and in component literature shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler or system. Failure to fol...

Page 77 - Figure 12-2 Burner Assembly

Installation & Operation Manual 77 12 Maintenance (continued) BURNER BURNERGASKET INSULATION,BURNER DOOR GASKET,BURNER PLATE BURNER PLATE 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 ...

Page 78 - Diagrams; Figure 13-1 Ladder Diagram

Installation & Operation Manual 78 13 Diagrams BOX DEPICTS OPTIONAL ITEMS LADDER DIAGRAM LBL20170 REV D 120 VAC 24 VAC 120VAC TERMINAL STRIP 120V SUPPLY "L" ON / OFF SWITCH X1-6 F2 NEUTRAL INTEGRATED CONTROL X2-1 GAS VALVE GAS VALVE RELAY X5-7 X5-16 X5-8 X5-15 1 2 4 5 3.15A F1 5A TR2 X1-...

Page 79 - Figure 13-2 Wiring Diagram

Installation & Operation Manual X1-7 ON/OFF SW ITCH 1 2 3 4 5 G R R W R T W BK Y BL BLOWER -T HIGH LIMIT SENSOR S1b OPERATING SENSOR S1a INLET SENSOR S2 FLUE SENSOR S3a FLUE SENSOR S3b INTEGRATED CONTROL BK Y GAS VALVE@24VAC SPARK ROD TRANSFORMER TR2 G HIGH VOLTAGE SPARK LEAD CAUTION FLAME SENSO...