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31

5

Vertical direct venting

Vent/air termination – vertical

Follow instructions below when
determining vent location to avoid
possibility of severe personal injury, death
or substantial property damage.

Determine location

Locate the vent/air terminations using the following
guidelines:

1. The total length of piping for vent or air must not exceed

the limits given in the General Venting Section on page
18 of this manual.

2. Prepare the vent termination and the air termination

elbow (FIG. 5-1A) by inserting bird screens. Bird screens
should be obtained locally.

3. The vent must terminate at least 3 feet above the highest

place in which the vent penetrates the roof and at least
2 feet above any part of a building within 10 horizontal
feet.

4. The air piping must terminate in a down-turned 180°

return pipe no further than 2 feet (.6 m) from the center
of the vent pipe. This placement avoids recirculation of
fl ue products into the combustion air stream.

5. The vent piping must terminate in an up-turned coupling

as shown in FIG. 5-1A. The top of the coupling must
be at least 1 foot above the air intake. When the vent
termination uses a rain cap as illustrated in FIG. 5-1B
maintain at least 36" (914 mm) above the air inlet. 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 intake.

6. Maintain the required dimensions of the fi nished

termination piping as shown in FIG. 5-1A.

7. Do not extend exposed vent pipe outside of building

more than shown in this document. Condensate could
freeze and block vent pipe.

Figure 5-1A PVC/CPVC/Polypropylene Vertical
Termination of Air and Vent

8. Locate terminations so they are not likely to be damaged by

foreign objects, such as stones or balls, or subject to buildup
of leaves or sediment.



WARNING



WARNING

Rooftop vent and air inlet terminations
must terminate in the same pressure zone,
unless vertical vent sidewall air is set up as
shown in the General Venting - Vertical
Vent, Sidewall Air Section.

6" (152 MM) MINIMUM

ABOVE ROOF /

SNOW LINE

VENT

COM,BUSTION

AIR

ALTERNATE INTAKE LOCATIONS:

INTAKE PIPES MAY BE LOCATED

ANYWHERE WITHIN 24” (610 MM)

OF VENT PIPE

VENT OUTLET

36” (914 MM) MINIMUM

ABOVE AIR INLET

BIRD SCREEN

(TYPICAL)

Figure 5-1B Stainless Steel Vertical Termination of Air
and Vent

Installation & Operation Manual

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Содержание 500

Страница 1: ...ng installer service technician Read all instructions including this manual and the FTXL Service Manual before installing Perform steps in the order given Failure to comply could result in severe personal injury death or substantial property damage WARNING Save this manual for future reference FTXL I O Rev C ...

Страница 2: ...Vent and Combustion Air Piping 17 Requirements for Installation in Canada 18 Sizing 18 Min Max Combustion Air Vent Piping Lengths 18 Materials 18 Optional Room Air 19 PVC CPVC 20 21 Polypropylene 22 Stainless Steel Vent 23 4 SIDEWALL DIRECT VENTING Vent Air Termination Sidewall 24 27 Determine Location 24 26 Prepare Wall Penetrations 26 27 Multiple Vent Air Terminations 27 Sidewall Termination Opt...

Страница 3: ...in system components Leaks in boiler or piping must be repaired at once to prevent makeup water Freeze protection fluids NEVER use automotive antifreeze Use only inhibited propylene glycol solutions which are specifically formulated for hydronic systems Ethylene glycol is toxic and can attack gaskets and seals used in hydronic systems When calling or writing about the boiler Please have the boiler...

Страница 4: ...d to remove trapped air from the heat exchanger shell 18 Air intake adapter Allows for the connection 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 connection A 1 NPT drain connection is provided for easy access in the event the boiler needs to be drained 21 Low voltage ...

Страница 5: ...Front View Left Side inside unit Right Side inside unit The FTXL How it works continued Rear View 5 Models 400 850 Installation Operation Manual ...

Страница 6: ...or altitude 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 De rate values are based on proper combustion calibration and CO2 s adjusted to the recommended levels 6 Maximum allowed working pressure is located on the rating plate NOTICE FTXL Boiler AHRI Rating Model Number Note Change N to ...

Страница 7: ...ast 1 25 mm from combustible materials 3 See FIG s 1 1 and 1 2 on page 8 for other clearance minimums Clearances for service access 1 See FIG s 1 1 and 1 2 on page 8 for recommended service clearances If you do not provide the minimum clearances shown it may not be possible to service the boiler without removing it from the space Closet and alcove installations This appliance requires a special ve...

Страница 8: ...r 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 death For closet installations CPVC polypropylene or stainless steel vent material MUST BE used in a closet structure due to elevated temperatures Failure to follow this warning could result in fire personal injury or death Installa...

Страница 9: ...23 1 and or CAN CGA B149 Installation 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 burner ignition devices are located not less than 18 inches 46 cm above the floor The appliance shall be located or protected so that it is not subject to physical damage by ...

Страница 10: ...nsure 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 application you must use only the listed manufacturers and their type product listed in Tables 3E and 3G for CAT IV positive pressure venting with flue producing condensate Supports Non combustible supports must be in place allowing a mi...

Страница 11: ...cted to the 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 operation the appliance being inspected Follow the lighting instructions Adjust thermostat so appliance will operate continuously e Test for spillage at the draft hood relief opening after 5...

Страница 12: ...Construction 3 A combination of indoor and outdoor combustion air may be utilized by applying a ratio of available volume to required volume times the required outdoor air opening s size s This must be done in accordance with the National Fuel Gas Code NFPA 54 ANSI Z223 1 IMG01075 Figure 1 4_Combustion Air Through Ducts 2 If combustion and ventilation air is taken from the outdoors using a duct to...

Страница 13: ... or cause a downdraft in the venting system Spillage of flue products from the venting system into an occupied living space can cause a very hazardous condition that must be corrected immediately The combustion air supply must be completely free of any flammable vapors that may ignite or chemical fumes which may be corrosive to the appliance Common corrosive chemical fumes which must be avoided ar...

Страница 14: ...oupling Slide the rubber boot off of the venturi 3 Disconnect gas piping from the venturi by loosening the threaded nut on the venturi replace gasket if damaged 4 Remove the bolts connecting the venturi to the fan and then proceed to remove the Natural venturi from the unit FIG s 2 2A and 2 2B 5 Install the LP venturi onto the fan taking note of the following a The UP arrow on the plastic housing ...

Страница 15: ...o lower CO2 FIG 2 3 4 After adjustment is complete attach the propane conversion label in the conversion kit bag next to the boiler rating plate Attach the LP caution label in the conversion kit bag to the rear of the boiler underneath the gas supply piping 5 Replace the gas valve cover and lower the bezel WARNING Failure to check and verify combustion could result in severe personal injury death ...

Страница 16: ...ee page 28 for more details Direct venting options Sidewall Vent 3 General venting Two Pipe Vertical See page 31 for more details Vertical Vent Sidewall Air PVC CPVC Concentric Vertical Models 400 600 Only See page 33 for more details Direct venting options Vertical Vent Installation Operation Manual ...

Страница 17: ...odes dictate 2 Vent Connector FIG s 3 2 thru 3 7 Used to provide a passageway for conveying combustion gases to the outside A transition fitting is provided on the unit for final connection Vent piping must be supported per the National Building Code Section 305 Table 305 4 or as local codes dictate The FTXL boiler vent and air piping can be installed through the roof or through a sidewall Follow ...

Страница 18: ...m 0 00 0 00 500 4 102 mm 4 102 mm 0 40 0 40 600 4 102 mm 4 102 mm 1 20 1 20 725 4 102 mm 6 152 mm 1 20 1 20 850 4 102 mm 6 152 mm 1 40 1 40 The FTXL uses model specific combustion air intake and vent piping sizes as detailed in Table 3A below Table 3A Air Intake Vent Piping Sizes Model Kit Number Equivalent Vent Length 400 CVK3007 5 1 5 m 500 600 CVK3007 30 9 m Table 3B Concentric Vent Kit Equival...

Страница 19: ...ting option the following conditions and considerations must be followed The unit MUST be installed with the appropriate bird screen Table 3C The equipment room MUST be provided with properly sized openings to assure adequate combustion air Please refer to instructions provided with the room air kit Using the room air kit makes the unit vulnerable to combustion air contamination from within the bu...

Страница 20: ...owed 1 Only FTXL boilers may be connected to the common vent DO NOT mix other manufacturer s appliances or other Lochinvar models 2 FTXL boilers connected to the common vent must all be of the same size 3 Each FTXL boiler must have a Lochinvar supplied flue damper installed see Table 3D 4 Only vertical direct vent positive pressure Category IV or vertical chimney vent negative pressure Category II...

Страница 21: ... the joint removing ring or beads as it will needlessly soften the pipe Table 3E PVC CPVC Vent Pipe and Fittings Approved PVC CPVC Vent Pipe and Fittings Item Material Standard Vent pipe PVC Schedule 40 80 ANSI ASTM D1785 PVC DWV ANSI ASTM D2665 CPVC Schedule 40 80 ANSI ASTM F441 Vent fittings PVC Schedule 40 ANSI ASTM D2466 PVC Schedule 80 ANSI ASTM D2467 CPVC Schedule 80 ANSI ASTM F439 Pipe Ceme...

Страница 22: ...tion No bends should be made to greater than 45 and ONLY installed in vertical or near vertical installations FIG 3 4 Use only the adapters and vent system listed in Tables 3F and 3G DO NOT mix vent systems of different types or manufacturers Failure to comply could result in severe personal injury death or substantial property damage WARNING Installations must comply with applicable national stat...

Страница 23: ... for Canada NOTICE Installation of a stainless steel vent system should adhere to the stainless steel vent manufacturer s installation instructions supplied with the vent system NOTICE Table 3I Approved Stainless Steel Adapters and Terminations Model Manufacturer Adapter Termination Flue Intake Flue Intake 400 600 DuraVent M G Fas N Seal FSA 04 PVC F303759 FSBS4 FSRC4 R C FSAIH04 303888 Heat Fab S...

Страница 24: ...all vent and air inlet terminations must terminate in the same pressure zone Figure 4 1B PVC CPVC Polypropylene Sidewall Termination of Air and Vent Do not exceed the maximum lengths of the outside vent piping shown in FIG 4 1B Excessive length exposed to the outside could cause freezing of condensate in the vent pipe resulting in potential boiler shutdown WARNING 3 The air piping must terminate i...

Страница 25: ... No closer than 12 inches 305 mm below or horizontally from any door or window or any other gravity air inlet b Air inlet must terminate at least 12 inches 305 mm above grade or snow line at least 12 inches 305 mm below the vent termination FIG 4 1B and the vent pipe must not extend more than 24 inches 610 mm vertically outside the building Figure 4 3A Clearance to Gravity Air Inlets w Field Suppl...

Страница 26: ...C CPVC Only Install the vent and air intake piping through the wall into the vent plate openings Use RTV silicone sealant to seal the air pipe Use the cement primer listed in Table 3E on page 21 to seal the vent pipe 3 Use a sidewall termination plate as a template for correct location of hole centers 4 Follow all local codes for isolation of vent pipe when passing through floors or walls 5 Seal e...

Страница 27: ...ure 4 1A WARNING 4 Mount and secure the vent plate to the wall using stainless steel screws 5 Seal all gaps between the pipes and wall Seal around the plate to the wall assuring no air gaps 6 Assemble the vent cap to the vent plate see FIG s 4 5B and 4 5C Insert the stainless steel screws into the vent cap screw hole openings and securely attach the vent cap to the vent plate 7 Seal all wall cavit...

Страница 28: ...nstructions 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 termination optional concentric vent Models 400 600 Only Description and usage Lochinvar offers an optional concentric combustion air and vent pipe termination kit CVK3007 for 4 102 mm diameter Models 400 600 Both combustion air and vent pipes must at...

Страница 29: ... VENT 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 materials to accumulate inside the pipe assembly when installing through the hole 6 Install the rain cap and small diameter pipe assembly into the Y concentric fitting and large pipe assembly from an o...

Страница 30: ...irculation of flue gases Figure 4 12 Concentric Vent and Combustion Air Termination COMBUSTION AIR VENT VENT COMBUSTION AIR STRAP FIELD SUPPLIED ELBOW FIELD SUPPLIED Figure 4 11 Concentric Vent Sidewall Attachment DO NOT use field supplied couplings to extend pipes Airflow restriction will occur and may cause intermittent operation 8 Cement appliance combustion air and vent pipes to the concentric...

Страница 31: ...take When the vent termination uses a rain cap as illustrated in FIG 5 1B maintain at least 36 914 mm above the air inlet 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 intake 6 Maintain the required dimensions of the finished termination piping as sh...

Страница 32: ... Provide flashing and sealing boots sized for the vent pipe and air pipe Multiple vent air terminations 1 When terminating multiple FTXL 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 of flue products and the possibility of severe personal injury death or substant...

Страница 33: ... the two 2 components together when field disassembly is desired for cleaning see FIG 4 10 page 29 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 holes may cause cracking of PVC components allowing combustion products to be recirculated Failure to follow this warning cou...

Страница 34: ...ed to the concentric vent termination connections Multiventing vertical terminations When two 2 or more direct vent appliances are vented near each other each appliance must be individually vented see FIG 5 7 NEVER common vent or breach vent this appliance When two 2 or more direct vent appliances are vented near each other two 2 vent terminations may be installed as shown in FIG 5 7 It is importa...

Страница 35: ...uirements per this section to the appropriate example Installation must comply with local requirements 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 unused venting system is converted for use with this method of concentric venting the installer must e...

Страница 36: ...nce requirements and allowable pipe lengths Use only approved venting materials listed in the General Venting Section of this manual Figure 5 10 Existing Vent as a Chase For concept illustration only Individual installations may vary due to job site specific equipment Installation Operation Manual ...

Страница 37: ...of the FTXL reference FIG s 6 3A and 6 3B 1 Connect the system return marked Inlet 2 Connect 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 water line 5 Install a pressure reducing valve on the cold feed make up water line 15 psi 103 kPa nominal Check...

Страница 38: ...ee Install the relief valve on the 3 4 inch close nipple FIG 6 2 For Models 400 600 install the relief valve directly into the 3 4 inch fitting on the tee FIG 6 1 3 Install the close nipple on the downstream side of the relief valve tee FIG 6 1 4 Install the tee with the 1 inch fitting positioned vertically and on the top FIG 6 1 5 Install a field provided close nipple on the downstream side of th...

Страница 39: ... Full port ball valves are required Failure to use full port ball valves could result in a restricted flow rate through the boiler 8 Anti scald mixing valve Field supplied An anti scald mixing valve is recommended when storing domestic hot water above 115 F 46 C 9 Unions Field supplied Recommended for unit serviceability 10 Temperature and pressure gauge Factory supplied The temperature and pressu...

Страница 40: ...r offers the Multi Temperature Loop Control Board Kit RLY30086 Installation Operation Manual Near boiler piping connections Figure 6 3A Near Boiler Piping w Y Strainer TEMPERATURE RISE APPLICATIONS MODEL FLOW RATE GPM FTX N L 400 10 FTX N L 500 12 FTX N L 600 15 FTX N L 725 18 FTX N L 850 21 Based on 80 F Temperature Rise Table 6A1 Minimum Flow Rate with the Boiler at Full Fire ABSOLUTE MINIMUM FL...

Страница 41: ...14 ft 15 ft Pressure Drop Feet of Head Flow Rate HEX Pressure Drop Full Flow Application FTX725 850 FTX400 600 TEMPERATURE RISE APPLICATIONS Model MINIMUM PIPE SIZE 20 F 30 F 40 F 60 F 80 F GPM FT HD GPM FT HD GPM FT HD GPM FT HD GPM FT HD 400 2 39 3 5 26 2 8 20 2 5 13 2 4 10 2 3 500 2 49 4 8 33 3 4 24 2 9 16 2 5 12 2 4 600 2 59 4 4 39 3 2 29 2 8 20 2 5 15 2 3 725 2 1 2 71 4 9 47 3 5 35 3 0 24 2 7...

Страница 42: ...quired by local codes NOTICE CAUTION Mixing valves are required for the protection of low temperature loops Installation Operation Manual Model Number of Units 2 3 4 5 6 7 8 Manifold Pipe Sizes in Inches mm 400 3 1 2 89 4 102 5 127 6 152 6 152 8 203 10 254 500 3 1 2 89 4 102 5 127 6 152 6 152 8 203 10 254 600 3 1 2 89 4 102 5 127 6 152 6 152 8 203 10 254 725 4 102 5 127 6 152 8 203 8 203 8 203 10 ...

Страница 43: ...lease note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes NOTICE CAUTION Mixing valves are required for the protection of low temperature loops Installation Operation Manual ...

Страница 44: ...cling and high limit issues Please note that these illustrations are meant to show system piping concept only the installer is responsible for all equipment and detailing required by local codes NOTICE CAUTION Indirect water heaters are capable of transferring a limited number of Btu s into the water Ensure boiler output does not exceed indirect water heater transfer capabilities Installation Oper...

Страница 45: ...loops CAUTION Indirect water heaters are capable of transferring a limited number of Btu s into the water Ensure boiler output does not exceed indirect water heater transfer capabilities Installation Operation Manual Model Number of Units 2 3 4 5 6 7 8 Manifold Pipe Sizes in Inches mm 400 3 1 2 89 4 102 5 127 6 152 6 152 8 203 10 254 500 3 1 2 89 4 102 5 127 6 152 6 152 8 203 10 254 600 3 1 2 89 4...

Страница 46: ...t and detailing required by local codes NOTICE CAUTION Indirect water heaters are capable of transferring a limited number of Btu s into the water Ensure boiler output does not exceed indirect water heater transfer capabilities Installation Operation Manual Model Number of Units 2 3 4 5 6 7 8 Manifold Pipe Sizes in Inches mm 400 3 1 2 89 4 102 5 127 6 152 6 152 8 203 10 254 500 3 1 2 89 4 102 5 12...

Страница 47: ... detailing required by local codes NOTICE Please note that the installer is responsible for ensuring DHW prioritization when piped as a zone 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 exceed indirect water heater transfer capab...

Страница 48: ...ply piping 5 Before 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 a test pressure in excess of 1 2 PSIG 3 5 kPa b The appliance must be isolated from the gas supply piping system by closing a manual shutoff valve during any pressure testing of the...

Страница 49: ...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 Contact gas supplier to size pipes tanks and 100 lockup gas pressure regulator Propane Supply Pressure Requirements 1 Adjust propane supply regulator provided by the gas supplier for 14 inches w c 3 2 kP...

Страница 50: ... 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 at the manual gas valve in the gas piping to the appliance 13 Remove the manometer from the pressure tap on top of the gas valve On Models 400 500 re tighten the set screw inside the pressure tap On Mo...

Страница 51: ... LP gas during standby static mode and while in operating dynamic mode If an in line regulator is used it must be a minimum of 10 feet 3 m from the FTXL boiler It is very important that the 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 in NEW LP inst...

Страница 52: ...ized for 1 5 hp 120V 3 hp 240V or 30 amps Figure 8 1 Line Voltage Field Wiring Connections Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation WARNING NOTICE CAUTION Low voltage connections 1 Route all low voltage wires through the knockouts in the rear of the boiler as shown in FIG 8 2 2 Continue to route the wires through the pl...

Страница 53: ...is provided to detect low gas pressure remove the jumper wire from the terminals on the connection board and connect them to its normally open contacts FIG 8 3 2 If both a high and low gas pressure switch is used connect their respective contacts in series and connect them to the terminals on the connection board FIG 8 3 Variable speed system pump If a variable speed pump is used in the primary lo...

Страница 54: ...through 6 10 The system supply sensor should be wired to the Low Voltage Connection Board at the terminals marked for the system sensor see FIG 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 the Low Voltage Connection Board at the terminals marked for...

Страница 55: ...55 8 Field wiring continued Figure 8 3 Low Voltage Field Wiring Connections Installation Operation Manual ...

Страница 56: ... the absence of other authority PVC and CPVC pipe must comply with ASTM D1785 or D2845 Cement and primer must comply with ASME D2564 or F493 For Canada use CSA or ULC certified PVC or CPVC pipe fittings and cement Do not use copper or black iron pipe or fittings 6 A condensate removal pump is required if the boiler is below the drain When installing a condensate pump select one approved for use wi...

Страница 57: ... leaks Continual fresh makeup water will reduce boiler life Minerals can build up in the heat exchanger reducing heat transfer overheating the heat exchanger and causing heat exchanger failure Purge air from water system 1 Purge air from system a Connect a hose to the purge valve Route the hose to an area where water can drain and be seen b Close the boiler or system isolation valve between the pu...

Страница 58: ...ically thereafter have the propane supplier verify the correct odorant level in the gas Check thermostat circuit s 1 Disconnect the two external wires connected to each of the heat loop demand terminals on the connection board 2 Connect a 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...

Страница 59: ...vent flue gas spillage and carbon monoxide emissions which will result in severe personal injury or death Check gas piping 1 Check around the boiler for gas odor following the procedure on page 48 of this manual connecting gas supply piping If you discover evidence of any gas leak shut down the boiler at once Find the leak source with a bubble test and repair immediately Do not start the boiler ag...

Страница 60: ...60 Figure 10 2 Operating Instructions 10 Start up Installation Operation Manual ...

Страница 61: ... connected 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 be programmed to run continuously except during outdoor shutdown Other settings may affect the operation of the boiler and system pumps as explained on the following pages If the boiler pump was running it continues to run for a shor...

Страница 62: ... 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 brackets denote screen status NOTICE Set clock WheninstalledinaCascadesystem theindividualcontrolsmust be programmed for cascade operation This is accomplished by accessing the control parameters Press the MENU key...

Страница 63: ...d to match the input rating of the indirect tank coil DHW space heating SH cycling If a DHW call for heat is received while a space heating call is in progress and the DHW is in Normal Mode the control will start the DHW pump and shut the boiler pump off The system pump will remain on For stand alone boilers if the space heating call is still active while the DHW call is in operation the control w...

Страница 64: ...mum rates the control will increase the firing rate when the flame signal drops too low Protection features Outlet temperature flue temperature and temperature rise limiting The outlet temperature is monitored by the boiler outlet temperature sensor When the outlet temperature exceeds 185 F the unit will reduce the fan speed If the outlet water temperature exceeds 195 F 90 C the control will shut ...

Страница 65: ...d as described on this page under Outdoor Reset Operation and Target Temperature Boost when the outdoor sensor is connected High limit operations The FTXL is equipped with adjustable automatic reset and manual reset high limits The automatic reset high limit has a maximum set point of 200 F and the manual reset high limit has a maximum set point of 210 F When the outlet temperature exceeds 200 F t...

Страница 66: ... the terminals on the Low Voltage Connection Board marked for the corresponding device When the boiler receives 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 point to the programmed DHW boiler set point and will adjust its firing rate to maintain this On...

Страница 67: ...e louver proving switch and blocked drain switch must close 4 The control starts the prepurge cycle by 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 postpurge then start another prepurge cycle and try to light the burner again On the 500 and larg...

Страница 68: ...nd send it to the tank coil instead The control will then modulate to maintain the outlet temperature to the DHW 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 modes until one of them is satisfied 10 Once both calls for heat are satisfied the control ...

Страница 69: ... the brackets denote screen status NOTICE To save parameters and exit programming Press the RIGHT SELECT SAVE key and then press the RIGHT SELECT HOME key To enter a parameter and continue programming Press the RIGHT SELECT SAVE key 1 time to return to the parameter listings press again to return to the menu listings Remember to press the RIGHT SELECT HOME key when finished programming in order to...

Страница 70: ...for an additional postpurge period to clear the combustion chamber and vent system of residual flue products SHUTDOWN The unit has been placed in the OFF position SETPOINT MET The controlled temperature has exceeded its set point and its offset BLOCKED The unit has detected a condition that has temporarily interrupted the current call for heat B Call for Heat Indicators Room Thermostat 1 has a cal...

Страница 71: ...rted by the MTLC control I O SCREEN a GAS PRESS SW The state of the gas pressure switch b FLOW SW The state of the flow switch c LOUVER RELAY The state of the louver relay output d LOUVER SW The state of the louver proving switch e BLOCKED DRAIN The state of the blocked drain switch f GAS VALVE The state of the gas valve output BMS SCREEN a 0 10V BMS IN b 0 10V RATE OUT c BMS ADDRESS d BMS CONTROL...

Страница 72: ...D LEFT SELECT key function USB Press the LEFT SELECT key to access the USB and Installer menu E NAVIGATION dial function MODIFY Pressing the NAVIGATION dial will allow the installer to change the text F RIGHT SELECT key function SHDN Press the RIGHT SELECT key to turn the boiler OFF ON Press the RIGHT SELECT key to turn the boiler ON NO Press the RIGHT SELECT key to cancel the shutdown operation S...

Страница 73: ...e uniform Flame signal at least 10 microamps at high fire Clean the heat exchanger if flue temperature is more than 54 F 30 C above return water temperature If combustion or performance indicate need Clean heat exchanger Remove and clean burner using compressed air only Clean the blower wheel ANNUAL START UP Owner maintenance see the FTXL User s Information Manual for instructions Daily Check boil...

Страница 74: ...in the boiler intake air vicinity they must be removed If they cannot be removed reinstall the air and vent lines per this manual and the FTXL Service Manual Inspect boiler interior 1 Lift the top bezel prop the bezel up for service and inspect the interior of the boiler 2 Vacuum any sediment from inside the boiler and components Remove any obstructions Clean condensate trap 1 Inspect the condensa...

Страница 75: ...r 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 corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally Certain naturally occurring conditions may corrode the valve or its components o...

Страница 76: ...control module display to Parameter Mode and check all settings See Section 1 of the FTXL Service Manual Adjust settings if necessary See Section 1 of the FTXL Service Manual for adjustment procedures 2 Check settings of external limit controls if any and adjust if necessary Perform start up and checks 1 Start boiler and perform checks and tests specified in Section 10 Start up 2 Verify cold fill ...

Страница 77: ... injury WARNING Cleaning boiler heat exchanger 1 Shut down boiler Follow the To Turn Off Gas to Appliance instructions for the boiler in Section 10 Startup Do not drain the boiler unless it will be exposed to freezing temperatures If using freeze prevention fluid in system do not drain 2 Allow time for the boiler to cool to room temperature if it has been firing 3 Remove the bezel from the unit 4 ...

Страница 78: ...78 Figure 13 1 Wiring Diagram 13 Diagrams Installation Operation Manual ...

Страница 79: ...Figure 13 2 Ladder Diagram 13 Diagrams continued 79 Installation Operation Manual ...

Страница 80: ...tes made to the room air kit on page 19 along with updates made to the wiring and ladder diagrams Revision C ECO C17014 reflects the standardization of pressure drop information on pages 49 and 50 as well as the the addition of the system supply sensor note on page 53 FTXL I O Rev C 01 15 ...

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