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Hydronic piping

(continued)

Figure 6-9 Multiple Boilers - Multiple Temperatures

Please note that these illustrations are meant to show system piping concept only, the installer is responsible
for all equipment. Th

e installer must follow all manufacturer’s instructions for each system component. Th

installer is responsible for compliance with local codes.

NOTICE

CAUTION

Mixing valves are required for the protection of low temperature loops.

CAUTION

Indirect water heaters are capable of transferring a limited number of Btu’s into the water. Ensure boiler
output does not not exceed indirect water heater transfer capabilities.

Model

Number of Units

Manifold Pipe Sizes in Inches (mm)

400

2 1/2 (64)

3 (76)

3 1/2 (89) 4 (102) 4 (102) 5 (127) 6 (152)

501

3 (76)

3 1/2 (89)

4 (102)

5 (127) 5 (127) 6 (152) 6 (152)

601

3 1/2 (89) 4 (102)

5 (127)

5 (127) 6 (152) 6 (152) 8 (203)

701

3 1/2 (89) 5 (127)

5 (127)

6 (152) 6 (152) 8 (203) 8 (203)

801

4 (102)

5 (127)

6 (152) 8 (203) 8 (203) 8 (203)

Installation & Operation Manual

Содержание Knight KBN400

Страница 1: ...ce technician Read all instructions includingthismanualandtheKnight XL Service Manual before installing Perform steps in the order given Failure to comply could result in severe personal injury death...

Страница 2: ...ll Vent and Combustion Air Piping 16 Requirements for Installation in Canada 17 Sizing 17 Min Max Combustion Air Vent Piping Lengths 17 Materials 18 Optional Room Air 19 PVC CPVC 19 20 Polypropylene 2...

Страница 3: ...oxic and can attack gaskets and seals used in hydronic systems When calling or writing about the boiler Please have the boiler model and serial number from the boiler rating plate Consider piping and...

Страница 4: ...on of the PVC air intake pipe to the boiler 19 High voltage junction box The junction box contains the connection points for the line voltage power and all pumps 20 Boiler drain port Location from whi...

Страница 5: ...13 7 38 20 23 4 25 29 5 IMG00858 40 Left Side inside unit Model 400 19 21 36 16 1 3 17 33 26 2 Right Side inside unit Model 400 The Knight XL How it works continued Rear View Model 400 5 Model 400 10...

Страница 6: ...How it works Rear View Model 501 Rear View Models 601 801 Left Side inside unit Models 601 801 Left Side inside unit Model 501 Model 501 Models 601 801 IMG00860 4 34 40 IMG00862 5 4 40 Installation O...

Страница 7: ...tude operation but the operation given in this manual remains the same as the standard boilers A high altitude label as shown in FIG A is also affixed to the unit Derate values are based on proper com...

Страница 8: ...pipe at least 1 25 mm from combustible materials 3 See FIG s 1 1 and 1 2 on page 9 for other clearance minimums Clearances for service access 1 See FIG s 1 1 and 1 2 on page 9 for recommended service...

Страница 9: ...llations CPVC polypropylene or stainless steel vent material MUST BE used in an alcove structure due to elevated temperatures Failure to follow this warning could result in fire personal injury or dea...

Страница 10: ...lation Code Appliances located in residential garages and in adjacent spaces that open to the garage and are not part of the living space of a dwelling shall be installed so that all burners and burne...

Страница 11: ...e collar connection Size To ensure proper pipe size is in place see Table 3A Check to see that this size is used throughout the vent system Manufacturer For a stainless steel or polypropylene applicat...

Страница 12: ...he common venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they will operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers d Place in...

Страница 13: ...ired for removal 2 Remove the three screws securing the venturi to the blower Note When separating the venturi from the blower take care not to damage the O ring inside the blower FIG 2 2 3 Remove the...

Страница 14: ...801 1 Remove the top access cover from the unit no tools required for removal 2 Remove the cover on top of the gas valve FIG 2 4 3 Turn the adjustment screw on top of the gas valve clockwise one and t...

Страница 15: ...e page 27 for more details Direct venting options Sidewall Vent 3 General venting Installation Operation Manual Two Pipe Vertical See page 30 for more details Vertical Vent Sidewall Air PVC CPVC Conce...

Страница 16: ...ction Combustion air piping must be supported per guidelines listed in the National Mechanical Code Section 305 Table 305 4 or as local codes dictate 2 Vent Connector FIG s 3 2 thru 3 7 Used to provid...

Страница 17: ...ce output rating will reduce by up to 1 5 for each 25 feet of vent length NOTICE Sizing Increasing or decreasing combustion air or vent piping sizes is not authorized NOTICE Model Air Intake Vent 400...

Страница 18: ...sted silicone sealant such as those manufactured by Dow Corning or General Electric b Do not install seams of vent pipe on the bottom of horizontal runs c Secure all joints with a minimum of three 3 s...

Страница 19: ...venting option the following conditions and considerations must be followed The unit MUST be installed with the appropriate room air kit Table 3C The equipment room MUST be provided with properly size...

Страница 20: ...Wipe excess cement from the joint removing ring or beads as it will needlessly soften the pipe Table 3D PVC CPVC Vent Pipe and Fittings Approved PVC CPVC Vent Pipe and Fittings Item Material Standard...

Страница 21: ...pylene vent system should adhere to the vent manufacturer s installation instructions supplied with the vent system Approved Polypropylene Vent Manufacturers Make Model Centrotherm Eco Systems InnoFlu...

Страница 22: ...steel vent system should adhere to the stainless steel vent manufacturer s installation instructions supplied with the vent system NOTICE Table 3H Stainless Steel Sidewall Vent Termination Kit s Model...

Страница 23: ...s where wind eddies could affect performance or cause recirculation such as inside building corners near adjacent buildings or surfaces window wells stairwells alcoves courtyards or other recessed are...

Страница 24: ...y public walkway At least 3 feet 9 m above any forced air intake within 10 feet 3 m No closer than 12 inches 305 mm below or horizontally from any door or window or any other gravity air inlet b Air i...

Страница 25: ...Manual 2 For Polypropylene Only Install the vent and air intake sidewall adapters from Table 3F on page 21 into the vent plate Slide the sidewall retaining bracket down the sidewall adapters flush to...

Страница 26: ...Alternate Multiple Vent Terminations w Field Supplied Fittings must also comply with Figure 4 1B WARNING Prepare wall penetrations Alternate Field Supplied Option 1 Air pipe penetration a Cut a hole...

Страница 27: ...ent using the procedures found in these instructions a Cement the Y concentric fitting to the larger kit pipe FIG 4 8 b Cement the rain cap to the smaller diameter kit pipe FIG 4 8 Sidewall terminatio...

Страница 28: ...PIPE Figure 4 10 Rain Cap to Vent Pipe Alternate Assembly 5 Install the Y concentric fitting and pipe assembly through the structure s hole from an inside wall Do not allow insulation or other materia...

Страница 29: ...to avoid recirculation of flue gases VENT COMBUSTION AIR 12 MINIMUM Figure 4 12 Concentric Vent and Combustion Air Termination COMBUSTION AIR VENT VENT COMBUSTION AIR STRAP FIELD SUPPLIED ELBOW FIELD...

Страница 30: ...let The air inlet pipe and vent pipe can be located in any desired position on the roof but must always be no further than 2 feet 6 m apart and with the vent termination at least 1 foot above the air...

Страница 31: ...tiple Knight XL boilers terminate each vent air connection as described in this manual FIG 5 2 Terminate all vent pipes at the same height and all air pipes at the same height to avoid recirculation o...

Страница 32: ...g see FIG 4 10 page 28 When using the alternate screw assembly method drill a clearance hole in the rain cap and a pilot hole in the vent pipe for the screw size being used Failure to drill adequate h...

Страница 33: ...toensure combustion air and vent pipes are properly connected to the concentric vent termination connections Multiventing vertical terminations When two 2 or more direct vent appliances are vented nea...

Страница 34: ...s and with the National Fuel Gas Code The maximum allowable equivalent vent and air intake lengths for this venting arrangement are to be determined from the General Venting Section If an existing unu...

Страница 35: ...wable pipe lengths Use only approved venting materials listed in the General Venting Section of this manual Figure 5 10 Existing Vent as a Chase FLUE EXHAUST AIR INLET FLUE OUTLET EXISTING CAP SEAL SE...

Страница 36: ...ct the system supply marked Outlet 3 Install purge and balance valve or shutoff valve and drain on system return to purge air out of each zone 4 Install a backflow preventer on the cold feed make up w...

Страница 37: ...close nipple in the tee Install the relief valve on the 3 4 inch close nipple FIG 6 2 For Models 400 601 install the relief valve directly into the 3 4 inch fitting on the tee FIG 6 1 3 Install the cl...

Страница 38: ...ves 3 Domestic hot water circulating pump Field supplied The pump MUST be sized to meet the specified minimum flow requirements listed in FIG s 6 5 and 6 6 Consult the indirect water heater operating...

Страница 39: ...r Field supplied A Y strainer or equivalent multipurpose strainer is recommended at the inlet of the heat exchanger to remove system particles from older hydronic systems and protect newer systems Var...

Страница 40: ...w Rate GPM Pressure Drop Feet of Head 0 10 20 30 40 50 60 0 10 20 30 40 50 60 70 80 90 KBN801 KBN701 KBN601 Pressure Drop vs Flow Includes Boiler Secondary Piping Flow Rate GPM Pressure Drop Feet of H...

Страница 41: ...ystem piping concept only the installer is responsible for all equipment The installer must follow all manufacturer s instructions for each system component The installer is responsible for compliance...

Страница 42: ...trations are meant to show system piping concept only the installer is responsible for all equipment The installer must follow all manufacturer s instructions for each system component The installer i...

Страница 43: ...are required for the protection of low temperature loops CAUTION Indirect water heaters are capable of transferring a limited number of Btu s into the water Ensure boiler output does not not exceed in...

Страница 44: ...n higher than the required flow for the boiler s when the boiler s is in operation to prevent short cycling and high limit issues Please note that these illustrations are meant to show system piping c...

Страница 45: ...or each system component The installer is responsible for compliance with local codes NOTICE Please note that the installer is responsible for ensuring DHW prioritization when piped as a zone NOTICE C...

Страница 46: ...placing the boiler in operation check the boiler and its gas connection for leaks a The appliance must be disconnected from the gas supply piping system during any pressure testing of that system at...

Страница 47: ...pressure regulator in supply line if inlet pressure can exceed 14 inches w c 3 5 kPa at any time Adjust lockup regulator for 14 inches w c 3 5 kPa maximum Propane Gas Pipe sizing for propane gas 1 Co...

Страница 48: ...supplier qualified installer or service agency to determine the necessary steps to provide proper gas pressure to the control 11 Turn the power switch to the OFF position 12 Shut off the gas supply a...

Страница 49: ...he gas line is properly purged by the gas supplier or utility company Failure to properly purge the lines or improper line sizing will result in ignition failure The problem is especially noticeable i...

Страница 50: ...15 amp recommended as required by the code see FIG 8 1 3 When connecting a domestic hot water DHW pump connect the wiring to the line voltage terminal strip as shown in FIG 8 1 4 To activate a system...

Страница 51: ...of the louvers needs to be verified before the boiler fires remove the jumper wire from these terminals and connect them to the normally open contacts on its proving switch FIG 8 3 High gas pressure s...

Страница 52: ...G 8 3 The Leader control will use the water temperature at the system supply sensor to control the operation of the Cascade If outdoor air reset is desired the outdoor air sensor should be wired to th...

Страница 53: ...M THERMOSTAT 3 SYSTEM SUPPLY SENSOR BUILDING MANAGEMENT SYSTEM LOUVER PROVING SWITCH COM NO LOW WATER CUTOFF OUTDOOR SENSOR TANK SENSOR SHIELD SHIELD TO NEXT BOILER A B A B FROM PREVIOUS BOILER ROOM T...

Страница 54: ...845 Cement and primer must comply with ASME D2564 or F493 For Canada use CSA or ULC certified PVC or CPVC pipe fittings and cement 7 A condensate removal pump is required if the boiler is below the dr...

Страница 55: ...he following for properly filling your boiler with the appropriate water chemistry for closed loop boilers Good fill water quality will help extend the life of the appliance by reducing the effects of...

Страница 56: ...this procedure until all zones are purged g Close the quick fill water valve and purge valve and remove the hose Open all isolation valves Watch that system pressure rises to correct cold fill pressur...

Страница 57: ...voltmeter across these two incoming wires Close each thermostat zone valve and relay in the external circuit one at a time and check the voltmeter reading across the incoming wires 3 There should NEVE...

Страница 58: ...g and air piping 1 Check for gastight seal at every connection seam of air piping and vent piping Venting system must be sealed gastight to prevent flue gas spillage and carbon monoxide emissions whic...

Страница 59: ...ch has been under water If you cannot reach your gas supplier call the fire department 1 STOP Read the safety information above on this label 2 Set the thermostat to lowest setting 3 Turn off all elec...

Страница 60: ...Hot Water tank and the set point is not met it also turns on the boiler pump After the space heating call for heat ends the system pump continues to run for a short period of time The system pump can...

Страница 61: ...AVIGATION dial to adjust the date Press the NAVIGATION dial 10 Turn the NAVIGATION dial to adjust the year Press the RIGHT SELECT SAVE key 11 Press the RIGHT SELECT HOME key Please note that the brack...

Страница 62: ...ty The SMART SYSTEM control allows the connection of a DHW thermostat or tank sensor to the low voltage connection board When a tank sensor is connected the DHW thermostat input is ignored When a boil...

Страница 63: ...To prevent nuisance shutdowns when the boiler is firing at minimum rates the control will increase the firing rate when the flame signal drops too low Protection features Outlet temperature flue temp...

Страница 64: ...sensor is not installed Target temperature is calculated as described on this page under Outdoor Reset Operation and Target Temperature Boost when the outdoor sensor is connected High limit operation...

Страница 65: ...ives a DHW call the Leader control will take that boiler out of the Cascade sequence If another boiler is available the Leader will start it up to take its place The DHW boiler will adjust its set poi...

Страница 66: ...initiating the blower 5 The control starts the trial for ignition by firing the spark electrode and opening the gas valve 6 If flame is not detected after the sparking ends the control will perform a...

Страница 67: ...boiler set point 9 If the boiler is not part of a Cascade and both the space heating and DHW calls for heat remain active long enough the boiler will switch back and forth between the two heating mode...

Страница 68: ...to set temperatures operating conditions and monitor boiler operation The information on the bottom of the display shows the functions of the two SELECT keys on either corner and the NAVIGATION dial i...

Страница 69: ...able in the Knight XL Service Manual 11 Operating information continued Please note that the brackets denote screen status NOTICE To save parameters and exit programming Press the RIGHT SELECT SAVE ke...

Страница 70: ...ar the combustion chamber and vent system of residual flue products SHUTDOWN The unit has been placed in the OFF position The controlled temperature has exceeded its set point and its offset BLOCKED T...

Страница 71: ...measured by the flame sense circuit FAN SPEED The speed of the combustion blower BOILER PUMP The status of the boiler pump output SYSTEM PUMP The status of the system pump output DHW PUMP The status...

Страница 72: ...ack Skip Screen E NAVIGATION Dial Function Turning the NAVIGATION dial will select the next or previous Status Screen Pressing the NAVIGATION dial will show the next fault NSB Night Setback trigger or...

Страница 73: ...ps at high fire Clean the heat exchanger if flue temperature is more than 54 F 30 C above return water temperature Test low water flow conditions reference the Knight XL Service Manual If combustion o...

Страница 74: ...hey must be removed If they cannot be removed reinstall the air and vent lines per this manual and the Knight XL Service Manual Inspect boiler interior 1 Remove the front access cover and inspect the...

Страница 75: ...Safety relief valves should be re inspected AT LEAST ONCE EVERY THREE YEARS by a licensed plumbing contractor or authorized inspection agency to ensure that the product has not been affected by corro...

Страница 76: ...SYSTEM control module display to Parameter Mode and check all settings See Section 1 of the Knight XL Service Manual Adjust settings if necessary See Section 1 of the Knight XL Service Manual for adju...

Страница 77: ...a vacuum cleaner to remove any accumulation on the boiler heating surfaces Do not use any solvent 7 Brush the heat exchanger while dry using a nylon bristle brush Caution DO NOT use a metal brush Re v...

Страница 78: ...block locations may vary from those shown on diagrams Refer to actual components for proper connector block locations when using diagrams to troubleshoot unit WIRING DIAGRAM LBL20401 REV A BOX DEPICTS...

Страница 79: ...O D B U S 29 34 9 5 6 7 8 X2 2 NOTES 1 Where possible switches are shown without utilities gas water or electricity connected to the unit As such actual switch states may vary from those shown on diag...

Страница 80: ...refl ects the addition of Metal Fab and Security Chimney as approved suppliers along with placing check valves on the outlet side of the pump on all of the piping diagrams and updates made to the poly...

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