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WH-I-O Rev H
Installation & Operation Manual
Models: WH 55 - 399
This manual must only be used by
WARNING
a qualified heating installer / service
technician. Read all instructions,
including this manual and the Knight
Wall Mount Service Manual, before
installing. Perform steps in the order
given. Failure to comply could result
in severe personal injury, death, or
substantial property damage.
Save this manual for future reference.
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Table of Contents
Related Manuals for Lochinvar Knight WH 55
Summary of Contents for Lochinvar Knight WH 55
- Page 1 WH-I-O Rev H Installation & Operation Manual Models: WH 55 - 399 This manual must only be used by WARNING a qualified heating installer / service technician. Read all instructions, including this manual and the Knight Wall Mount Service Manual, before installing.
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Page 2: Table Of Contents
Contents HAZARD DEFINITIONS ......2 6. HYDRONIC PIPING PLEASE READ BEFORE PROCEEDING ... . 3 System Water Piping Methods . -
Page 3: Please Read Before Proceeding
Installation & Operation Manual Please read before proceeding When servicing boiler – Installer – Read all instructions, WARNING including this manual and the Knight • To avoid electric shock, disconnect electrical supply Wall Mount Service Manual, before before performing maintenance. installing. -
Page 4: The Knight Wall Mount Boiler - How It Works
Installation & Operation Manual The Knight Wall Mount Boiler - How it works... Stainless steel heat exchanger 15. Gas connection pipe Allows system water to flow around specially designed Threaded pipe connection. This pipe should be tubes for maximum heat transfer, while providing connected to the incoming gas supply for the purpose of protection against flue gas corrosion. - Page 5 Installation & Operation Manual The Knight Wall Mount Boiler - How it works... (continued) Models 55 - 399 FRONT OF UNIT IMG00117 Front View Bottom View IMG00162 IMG00161 Left Side (inside unit) Right Side (inside unit)
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Page 6: Ratings
7. The Knight Wall Mount boiler input rate, on some models, Notes: is reduced for vent lengths beyond the minimum. Two inch 1. As an Energy Star Partner, Lochinvar has determined that vent will reduce Models WH(N,L) 055, WH(N,L) 085 and Knight wall mount boilers meet the Energy Star guidelines WH(N,L)110 by 0.6%, 0.94%, and 1.2% for every 10 feet... -
Page 7: Determine Boiler Location
Installation & Operation Manual Determine boiler location Installation must comply with: This appliance is certified as an indoor WARNING appliance. Do not install the appliance • Local, state, provincial, and national codes, laws, outdoors or locate where the appliance will regulations, and ordinances. - Page 8 Installation & Operation Manual Determine boiler location Figure 1-1 Closet Installation - Minimum Required Clearances For closet installations, CPVC, WARNING LEFT polypropylene or stainless steel 6" MINIMUM 0" MINIMUM vent material MUST BE used in VENTILATING a closet structure due to elevated AIR OPENING temperatures.
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Page 9: Provide Air Openings To Room
Installation & Operation Manual Determine boiler location (continued) Provide air openings to room: Residential garage installation Knight wall mount boiler alone in boiler room Precautions Take the following precautions when installing the appliance in 1. No air ventilation openings into the boiler room are a residential garage. -
Page 10: Corrosive Contaminants And Sources
Installation & Operation Manual Determine boiler location When using an existing vent system to Table 1A Corrosive Contaminants and Sources install a new boiler: Products to avoid: Failure to follow all instructions can result WARNING Spray cans containing chloro/fluorocarbons in flue gas spillage and carbon monoxide emissions, causing severe personal injury Permanent wave solutions or death. -
Page 11: Removing A Boiler From Existing Common Vent
Installation & Operation Manual Determine boiler location (continued) When removing a boiler from existing common vent system: Do not install the Knight wall mount g. Any improper operation of the common venting system DANGER should be corrected so the installation conforms with boiler into a common vent with any other the National Fuel Gas Code, ANSI Z223.1/NFPA 54 appliance. -
Page 12: Prepare Boiler
Installation & Operation Manual Prepare boiler Remove boiler from wood pallet Table 2A LP Conversion Table LP Conversion Table 1. After removing the outer shipping carton from the boiler, remove the parts box. Model LP Orifice Stamping 2. To remove the boiler from the pallet: Remove the two (2) lag bolts securing the bottom of the unit to the pallet. -
Page 13: Mounting The Boiler
Installation & Operation Manual Prepare boiler (continued) WARNING The boiler is too heavy for a single person to 13. Reattach the Molex plug to the gas valve. lift. A minimum of two people is needed for 14. Models 55 - 285 only, turn the gas valve power switch to mounting the boiler onto the bracket. -
Page 14: General Venting
Installation & Operation Manual General venting Direct venting options - Sidewall Vent Figure 3-1 Two-Pipe Sidewall Termination - See page Figure PVC/CPVC Concentric Sidewall 22 for more details Termination - See page 26 for more details Figure 3-4 PVC/CPVC Concentric Figure 3-5 Vertical Vent, Sidewall Air Figure 3-3 Two-Pipe Vertical Vertical Termination - See page 30... -
Page 15: Install Vent And Combustion Air Piping
Installation & Operation Manual General venting Install vent and combustion air piping The Knight wall mount boiler must be The Knight wall mount boiler vent and air piping can be DANGER vented and supplied with combustion and installed through the roof or through a sidewall. Follow the ventilation air as described in this section. -
Page 16: Requirements For Installation In Canada
The 2" and 3" Concentric Vent Kits available from Table 3B Concentric Vent Kit Equivalent Vent Lengths Lochinvar (see Section 4 – Sidewall Termination – Optional Concentric Vent) and the 2" and 3" Concentric Vent Kits Equivalent Vent... -
Page 17: Materials
Installation & Operation Manual General venting (continued) Materials Air inlet pipe materials: The PVC, CPVC, or ABS air inlet pipe should be cleaned and The air inlet pipe(s) must be sealed. Choose acceptable combustion air inlet pipe materials from the following list: sealed with the pipe manufacturer’s recommended solvents and standard commercial pipe cement for the material used. -
Page 18: Optional Room Air
Installation & Operation Manual General venting Optional room air Air contamination Optional room air is intended for NOTICE commercial applications. Combustion air Pool and laundry products and common household and hobby piping to the outside is recommended for products often contain fluorine or chlorine compounds. residential applications. -
Page 19: Pvc/Cpvc
Installation & Operation Manual General venting (continued) PVC/CPVC Work from the boiler to vent or air termination. Do not exceed the lengths given in this manual for the air or vent This product has been approved for use with the PVC/CPVC piping. -
Page 20: Polypropylene
Installation & Operation Manual General venting Polypropylene Use only the adapters and vent system listed WARNING in Tables 3E and 3F. DO NOT mix vent This product has been approved for use with polypropylene systems of different types or manufacturers. vent with the manufacturers listed in Table 3E. -
Page 21: Stainless Steel Vent
Installation & Operation Manual General venting (continued) Stainless steel vent Installation of a stainless steel vent NOTICE system should adhere to the stainless This product has been approved for use with stainless steel steel vent manufacturer’s installation using the manufacturers listed in Table 3G. instructions supplied with the vent system. -
Page 22: Sidewall Direct Venting Vent/Air Termination - Sidewall
Installation & Operation Manual Sidewall direct venting Vent/air termination – sidewall Figure 4-1A PVC/CPVC/Polypropylene Sidewall Termination of Air and Vent Follow instructions below when WARNING determining vent location to avoid TO BOILER INTAKE AIR possibility of severe personal injury, CONNECTION death, or substantial property damage. - Page 23 Installation & Operation Manual Sidewall direct venting (continued) Vent/air termination – sidewall 6. Locate terminations so they are not likely to be damaged Figure 4-1C Alternate PVC/CPVC/SS/ Polypropylene Venting by foreign objects, such as stones or balls, or subject to Arrangement (if Space Allows) w/Field Supplied Fittings buildup of leaves or sediment.
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Page 24: Prepare Wall Penetrations
Installation & Operation Manual Sidewall direct venting Figure 4-3B Alternate Clearance to Forced Air Inlets w/ Figure 4-4A PVC/CPVC Sidewall Termination Assembly Field Supplied Fittings IF LESS THAN 10’ 36” VENT MIN. FORCED AIR AIR PIPING CENTERLINE WIDTH INLET BIRD VENT PIPING SCREEN VENT PLATE... -
Page 25: Multiple Vent/Air Terminations
Installation & Operation Manual Sidewall direct venting (continued) Prepare wall penetrations (Alternate - Figure 4-5A Multiple Vent Terminations (must also Field Supplied Option) comply with Figure 4-1A) Air pipe penetration: 12" MIN. BETWEEN EDGE OF AIR Cut a hole for the air pipe. Size the air pipe hole as INLET AND ADJACENT VENT OUTLET close as desired to the air pipe outside diameter. -
Page 26: Sidewall Termination - Optional Concentric Vent
Sidewall direct venting Sidewall termination – optional concentric vent Description and usage Lochinvar offers optional concentric combustion air and vent 3. Cut one (1) hole (5 inch diameter for #CVK3003 pipe termination kits (Factory Kit #CVK3003 for 3" diameter installations, 4 inch diameter for #CVK3008, or 7 inch - models 155 - 199, #CVK3008 for 2"... - Page 27 Installation & Operation Manual Sidewall direct venting (continued) Sidewall termination – optional concentric vent models Figure 4-9 2" and 3" Concentric Vent Dimensional Figure 4-10 4" Concentric Vent Dimensional Drawing Drawing (reference Table 3D on page 19) (reference Table 3D on page 19) "B"...
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Page 28: Sidewall Termination - Optional Concentric Vent
Installation & Operation Manual Sidewall direct venting Sidewall termination – optional concentric vent Figure 4-12 Concentric Vent Sidewall Attachment Multiventing sidewall terminations DO NOT use field-supplied couplings to CAUTION extend pipes. Airflow restriction will occur When two (2) or more direct vent appliances are vented near and may cause intermittent operation. -
Page 29: Vertical Direct Venting Vent/Air Termination - Vertical
Installation & Operation Manual Vertical direct venting Vent/air termination – vertical Figure 5-1A PVC/CPVC/Polypropylene Vertical Termination of Air and Vent Follow instructions below when WARNING ALTERNATE INTAKE LOCATIONS: determining vent location to avoid INTAKE PIPES MAY BE LOCATED possibility of severe personal injury, death ANYWHERE WITHIN 24”... -
Page 30: Multiple Vent/Air Terminations
FIG. 5-1A, page 29. 4. Follow all local codes for isolation of vent pipe when Lochinvar offers an optional concentric combustion air and passing through floors, ceilings, and roofs. vent pipe termination kit. Both combustion air and vent 5. - Page 31 Installation & Operation Manual Vertical direct venting (continued) Ensure termination height is above the Instead of cementing the smaller pipe to NOTICE NOTICE roof surface or anticipated snow level (12 the rain cap, a field supplied stainless steel inches in U.S.A. or 18 inches in Canada) as screw may be used to secure the two (2) shown in FIG.
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Page 32: Alternate Vertical Concentric Venting
Installation & Operation Manual Vertical direct venting Alternate vertical concentric Figure 5-8 Concentric Vent Example 1 venting FLUE EXHAUST This appliance may be installed with a concentric vent arrangement where the vent pipe is routed through an SEAL existing unused venting system; or by using the existing COMBUSTION AIR unused venting system as a chase for vent and combustion AIR INLET... -
Page 33: Hydronic Piping
Installation & Operation Manual Hydronic piping System water piping methods General piping information The Knight wall mount is designed to function in a closed Basic steps are listed below along with illustrations on the loop pressurized system not less than 12 psi. A temperature following pages (FIG.’s 6-3 through 6-12), which will guide and pressure gauge is included to monitor system pressure you through the installation of the Knight wall mount boiler... -
Page 34: Near Boiler Piping Components
DHW and space heating. to install check valves could result in a reverse flow Lochinvar offers the Squire which is a series of indirect condition during pump(s) off cycle. water heaters. The Squire features a stainless steel vessel 6. -
Page 35: Near Boiler Piping Connections
Installation & Operation Manual Hydronic piping (continued) Near boiler piping connections Figure 6-1A Near Boiler Piping Figure 6-1B Near Boiler Piping w/Low Loss Header VENT VENT VENT DOMESTIC OUTLET HOT WATER INLET DOMESTIC HOT PUMP OUTLET WATER PUMP INLET INDIRECT CONDENSATE DOMESTIC INDIRECT... - Page 36 Installation & Operation Manual Hydronic piping Figure 6-2 Pressure Drop vs. Flow 3.00 9.00 8.00 2.50 7.00 MODEL MODEL 2.00 6.00 5.00 1.50 4.00 1.00 3.00 2.00 0.50 1.00 0.00 0.00 -0.50 FLOW FLOW 3.50 3.00 2.00 1.80 2.50 1.60 MODEL MODEL 1.40...
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Page 37: Variable Speed Pump Option
6-9 only. The use of other near loop from overheating. To help aid with this protection, boiler piping configurations could result in Lochinvar offers the Multi- Temperature Loop Control Board improper building and system flow rates Kit (RLY30086). leading to inadvertent boiler high limit... - Page 38 Installation & Operation Manual Hydronic piping Figure 6-3 Single Boiler - Primary / Secondary Piping PRESSURE REDUCING VALVE PRESSURE BACKFLOW GAUGE PREVENTER MAKE UP WATER SEPARATOR SYSTEM SUPPLY SENSOR MAY SUBSTITUTE LOW LOSS HEADER FROM SYSTEM SYSTEM NOT TO EXCEED 4 PIPE DIA OR MAX. OF 12" APART SYSTEM BALL VALVE CIRCULATOR...
- Page 39 Installation & Operation Manual Hydronic piping (continued) Figure 6-4 Single Boiler - Single Temperature with Zone Valves - DHW Priority ZONE #1 PRESSURE PRESSURE REDUCING VALVE GAUGE ZONE #2 ZONE #3 ZONE #4 BACKFLOW PREVENTER ZONE VALVES (TYPICAL) MAKE UP WATER DIFFERENTIAL PRESSURE...
- Page 40 Installation & Operation Manual Hydronic piping Figure 6-5 Single Boiler - Single Temperature Zoned with Circulators - DHW Priority ZONE #1 PRESSURE PRESSURE GAUGE REDUCING VALVE ZONE #2 ZONE #3 ZONE #4 BACKFLOW FLOW CHECK PREVENTER VALVE (TYPICAL) MAKE UP WATER SYSTEM SUPPLY SENSOR ZONE CIRCULATORS...
- Page 41 Installation & Operation Manual Hydronic piping (continued) Figure 6-6 Multiple Boilers - Single Temperature Zoned with Zone Valves - DHW Priority Number of Units Model Required Pipe Sizes 1-1/4" 1-1/2" 1-1/2" 2" 2" 2" 2" 1-1/4" 1-1/2" 2" 2" 2" 2-1/2"...
- Page 42 Installation & Operation Manual Hydronic piping Figure 6-7 Multiple Boilers - Single Temperature Zoned with Circulators - DHW Priority Number of Units Model Required Pipe Sizes 1-1/4" 1-1/2" 1-1/2" 2" 2" 2" 2" 1-1/4" 1-1/2" 2" 2" 2" 2-1/2" 2-1/2" 1-1/2"...
- Page 43 Installation & Operation Manual Hydronic piping (continued) Figure 6-8 Single Boiler - Multiple Temperature - DHW Priority PRESSURE TEMPERATURE TEMPERATURE TEMPERATURE REDUCING VALVE LOOP #1 LOOP #2 LOOP #3 BACKFLOW PREVENTER PRESSURE GAUGE MAKE MIXING VALVES SYSTEM WATER (TYPICAL) SUPPLY SENSOR AIR SEPARATOR EXPANSION...
- Page 44 Installation & Operation Manual Hydronic piping Figure 6-9 Multiple Boilers - Multiple Temperature - DHW Piped as a Zone Number of Units Model Required Pipe Sizes 1-1/4" 1-1/2" 1-1/2" 2" 2" 2" 2" 1-1/4" 1-1/2" 2" 2" 2" 2-1/2" 2-1/2" 1-1/2"...
- Page 45 Installation & Operation Manual Hydronic piping (continued) Figure 6-10 Single Boiler - Full Flow - Single Temperature - Zoned with Zone Valves - DHW Priority ZONE #1 PRESSURE PRESSURE REDUCING VALVE GAUGE ZONE #2 ZONE #3 ZONE #4 BACKFLOW PREVENTER ZONE VALVES (TYPICAL) MAKE UP...
- Page 46 Installation & Operation Manual Hydronic piping Figure 6-11 Single Boiler - Full Flow - Single Temperature Zoned with Valves - DHW Piped as a Zone ZONE #1 PRESSURE REDUCING VALVE PRESSURE ZONE #2 ZONE #3 ZONE #4 GAUGE BACKFLOW PREVENTER ZONE VALVES (TYPICAL) MAKE UP...
- Page 47 Installation & Operation Manual Hydronic piping (continued) Figure 6-12 Single Boiler - Full Flow - Single Temperature Zoned with Circulators - DHW Piped as a Zone ZONE #1 PRESSURE PRESSURE GAUGE REDUCING VALVE ZONE #2 ZONE #4 ZONE #3 BACKFLOW FLOW CHECK PREVENTER VALVE...
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Page 48: Gas Connections Connecting Gas Supply Piping
Installation & Operation Manual Gas connections Connecting gas supply piping 1. Remove the front access panel and refer to FIG. 7-1 2. Support piping with hangers, not by the boiler or its to pipe gas to the boiler. accessories. Install a field supplied sediment trap / drip leg The gas valve and blower will not support upstream of the boiler gas controls. -
Page 49: Natural Gas
Installation & Operation Manual Gas connections (continued) Natural gas: Failure to apply pipe sealing compound WARNING as detailed in this manual can result Pipe sizing for natural gas in severe personal injury, death, or substantial property damage. 1. Refer to Table 7A for pipe length and diameter. Based on Knight wall mount boilers are typically rated boiler input (divide by 1,000 to obtain cubic feet per WARNING... -
Page 50: Check Inlet Gas Supply
Installation & Operation Manual Gas connections Table 7A Natural Gas Pipe Size Chart Natural Gas Pipe Capacity Chart Nominal Iron Pipe Length of Pipe in Straight Feet for 1/2 PSI Size (Inches) 1-1/4 1400 1-1/2 2150 1500 1210 1020 4100 2820 2260 1950... -
Page 51: Gas Pressure
Installation & Operation Manual Gas connections (continued) Gas Pressure When re-tightening the set screw, be WARNING sure to tighten securely to prevent gas The gas pressure must remain between 4 inches w.c. (natural), leaks. 8 inches w.c. (LP) minimum and 14 inches w.c. (natural and LP) Do not check for gas leaks with an open maximum during stand-by (static) mode and while in operating flame -- use the bubble test. -
Page 52: Field Wiring
Installation & Operation Manual Field wiring ELECTRICAL SHOCK HAZARD – For 4. Wire the boiler pump as shown in FIG. 8-2. WARNING your safety, turn off electrical power supply 5. When connecting a domestic hot water (DHW) pump, before making any electrical connections connect the wiring to the line voltage terminal strip as to avoid possible electric shock hazard. -
Page 53: Outdoor Temperature Sensor
Connect this temperature reaches the tank set point. output to the 0 - 10V input on the boiler pump speed control. 2. The tank sensor included with the Lochinvar Squire Rate output Indirect DHW tank (TST20015) is the only sensor suitable for use with the SMART SYSTEM control. -
Page 54: Wiring Of The Cascade
Installation & Operation Manual Field wiring System supply sensor Wiring of the cascade 1. By installing the system supply sensor into the supply When wiring the boilers for Cascade operation, select one boiler of the primary loop, the temperature of the primary as the Leader boiler. - Page 55 Installation & Operation Manual Field wiring (continued) Figure 8-4 Low Voltage Field Wiring Connections...
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Page 56: Condensate Disposal Condensate Drain
Installation & Operation Manual Condensate disposal Condensate drain Use materials approved by the authority NOTICE having jurisdiction. In the absence of other 1. This boiler is a high efficiency appliance that produces authority, PVC and CPVC pipe must comply condensate. with ASTM D1785 or D2845. -
Page 57: Startup
Installation & Operation Manual Start-up Check/control water chemistry 4. At initial fill and during boiler startup and testing, check system thoroughly for any leaks. Repair all leaks before Do not use petroleum-based cleaning or proceeding further. CAUTION sealing compounds in the boiler system. Damage to elastomer seals and gaskets Eliminate all system leaks. -
Page 58: Check For Gas Leaks
Installation & Operation Manual Start-up Check for gas leaks Inspect/fill condensate system Before starting the boiler, and during Inspect/check condensate lines and fittings WARNING initial operation, smell near the floor and 1. Inspect the condensate drain line, condensate fittings and around the boiler for gas odorant or any condensate trap. -
Page 59: Start The Boiler
Installation & Operation Manual Start-up (continued) Final checks before starting the boiler Check vent piping and air piping 1. Check for gas tight seal at every connection, seam of air Read the Knight Wall Mount Service Manual to piping, and vent piping. - Page 60 Installation & Operation Manual Start-up Figure 10-2 Operating Instructions - Models 55 - 285...
- Page 61 Installation & Operation Manual Start-up (continued) Figure 10-3 Operating Instructions - Model 399...
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Page 62: Set Space Heating Operation
Installation & Operation Manual Start-up Check flame and combustion Set space heating operation (continued) Please note that the brackets ([]) denote NOTICE Determine controlling sensor screen status. For space heating systems, the temperature control can be 4. Place the boiler into the active position by pressing the based on one of three sensors;... -
Page 63: Startup
Installation & Operation Manual Start-up (continued) Set domestic hot water (DHW) operation Verify DHW mode There are two (2) modes of operation for DHW. In Normal Turn the NAVIGATION dial to adjust the minutes. Press Mode, when a DHW demand begins, the control will start the NAVIGATION dial. -
Page 64: Operating Information
(3) separate loops, based on the settings for rate from a minimum of 20% to a maximum of 100%. The the three (3) heat/loop demands (reference Lochinvar kit firing rate is dictated by the call for heat (i.e., space heating or RLY30086). - Page 65 Installation & Operation Manual Operating information (continued) Protection features Ramp delay For systems with lower flow, the SMART SYSTEM can limit Outlet temperature, flue temperature, and temperature the firing rate (when enabled) when a space heating call for rise limiting heat starts, or when switching from a DHW call for heat to a space heating call for heat.
- Page 66 Installation & Operation Manual Operating information Monitor external limits High limit operations The Knight wall mount is equipped with adjustable automatic Connections are provided on the connection board for reset and manual reset high limits. The automatic reset high external limits such as flow switch, low water cutoff, gas limit has a maximum set point of 200°F and the manual reset pressure switches, and a louver proving switch.
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Page 67: Cascade
Installation & Operation Manual Operating information (continued) Low water cutoff protection Sequence of the cascade The SMART SYSTEM control module uses temperature To equalize the run time of all boilers on the Cascade, the firing sensing of both supply and return areas of the heat sequence will automatically be changed at set intervals. -
Page 68: Sequence Of Operation
Installation & Operation Manual 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 heating, DHW pump for DHW). -
Page 69: Access Modes
Installation & Operation Manual Operating information (continued) OPERATION DISPLAY 8. If the space heating call for heat is active, and the tank thermostat or sensor starts a DHW call for heat, the boiler will switch to the DHW mode. If programmed for normal DHW operation (not as a zone), the DHW pump will turn on first, then the boiler pump will turn off (boiler and DHW pump operation briefly overlap to ensure flow is maintained through the unit). -
Page 70: Knight Wall Mount Boiler Control Module
Installation & Operation Manual Operating information Knight wall mount boiler control module Use the control panel (FIG. 11-1) to set temperatures, operating conditions, and monitor boiler operation. Figure 11-1 Control Panel NAVIGATION DIAL The information on the bottom of the display shows the functions of the two SELECT keys (on either corner), and the NAVIGATION dial (in the center): MENU = Left SELECT Key SETPOINTS = NAVIGATION Dial - Pressing Down... -
Page 71: Status Display Screens
Installation & Operation Manual Operating information (continued) Figure 11-2 Status Display Screen (CALL FOR (BOILER HEAT) STATUS) (OPERATIONAL INFORMATION) (RIGHT SELECT KEY) (LEFT SELECT KEY) (NAVIGATION DIAL) Status Display Screens Section Display Description The unit has not received a call for heat from a remote thermostat nor STANDBY has it received a call for heat from a DHW thermostat. - Page 72 Installation & Operation Manual Operating information Status Display Screens (cont’d) Section Display Description SYSTEM: The temperature read by the system supply sensor (if connected). TANK: The temperature read by the tank sensor (if connected). OUTDOOR: The temperature read by the outdoor sensor (if connected). INLET TEMP: The temperature read at the inlet to the heat exchanger.
- Page 73 Installation & Operation Manual Operating information (continued) Status Display Screens (cont’d) Section Display Description Press and hold the LEFT SELECT key for 5 seconds to enter the Menu MENU Screen. EXIT Press the LEFT SELECT key to exit the current screen or setting. Press the LEFT SELECT key to confirm that the boiler needs to shutdown.
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Page 74: Maintenance Maintenance And Annual Startup
Installation & Operation Manual Maintenance Maintenance and annual startup Table 12A Service and Maintenance Schedules Owner maintenance Service technician (see the Knight Wall Mount User’s Information (see the following pages for instructions) Manual for instructions) General: • Address reported problems •... -
Page 75: Address Reported Problems
Installation & Operation Manual Maintenance (continued) Follow the Service and maintenance procedures given throughout this manual and in component literature WARNING shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage. -
Page 76: Check Expansion Tank
Installation & Operation Manual Maintenance Safety relief valves should be re-inspected Flue vent system and air piping WARNING AT LEAST ONCE EVERY THREE YEARS, by a licensed plumbing contractor or Visually inspect the entire flue gas venting system and air authorized inspection agency, to ensure piping for blockage, deterioration or leakage. -
Page 77: Review With Owner
Installation & Operation Manual Maintenance (continued) Review with owner Perform start-up and checks 1. Review the Knight Wall Mount User’s Information Manual 1. Start boiler and perform checks and tests specified in with the owner. Section 10 - Start-up. 2. Emphasize the need to perform the maintenance schedule 2. -
Page 78: Diagrams
Installation & Operation Manual Diagrams Figure 13-1 Ladder Diagram 120VAC JUNCTION BOX NEUTRAL GROUND TERMINAL STRIP TERMINAL STRIP 120V SUPPLY "L" 120V SUPPLY "N" INTEGRATED CONTROL BLOWER ON / OFF SWITCH SYSTEM X1-1 SYSTEM X1-6 PUMP "L" PUMP "N" X1-2 3.15A SYSTEM PUMP... -
Page 79: Wiring Diagram
Installation & Operation Manual Diagrams (continued) Figure 13-2 Wiring Diagram LOW VOLTAGE BOX DEPICTS 120 VAC OPTIONAL ITEMS HIGH VOLTAGE BOX DEPICTS DUAL SENSOR SINGLE HOUSING INTEGRATED BOX DEPICTS CONNECTION BOARD CONTROL JUNCTION OPTIONAL ITEMS ALARM X1-3 CONTACTS PUMP RUN-TIME CONTACTS X1-4 24 VAC LOUVER... - Page 80 Revision A (ECO #C06854) initial release. Revision B (ECO #C08222) reflects the changes to the water pipe clearances from 1" to a 1/4" (ECR #R04077), pages 7, 8, and 33 and changes made to the service clearances (left side) from 24" to 12" (ECR R04002).