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Thomas & Betts LDAP 1200 User's Manual

1. LISTED R 7 R Thomas Betts Table of Contents Page WV ARTI oS eem 1 Installation Operation 2 29 Check Test Startup 30 31 1 32 Maintenance Service 32 40 Index by page 15103 California Warning Label 5 Combustion ees Confined Space Destratification Dimensions o S Electrical Connections ______ 20 36 Fan Control Destratification 18 38 ily BS Gas Piping and Pressures 10 UM 21897 General 2 Hazard Intensity 7 Heat Exchanger Maintenance 99 3 12 High Limit Control Tenitionf Systeme e sete ees LED Flash Codes Limit Control Location Heater 2910932 Maintenance Schedule 32 33 3432 Pressure Switch Combustion Air 5917287 Replacement Parts See Form P LDAP Sonndildtae e ss Suspending Heater Thermostat Option Throw Data o Troubleshooting 38 40 Uncrating and Preparation 9 Valve Outlet Pressure Vent System Maint
2. terminal on the gas valve and check the low fire pressure Turn the regulator screw to adjust the low fire outlet pressure to the Low Fire pressure selected from the table Re connect the wire to the gas valve Form RZ NA I LDAP P N 207733 Rev 2 Page 12 4 Turn up the thermostat Cycle the burners once or twice to properly seat the adjustment spring in the valve Re check the pressure s When the outlet pressure is right for the installation remove the manometer and replace the cap Check for leak at the pressure tap fitting 5 If installing a Model LDAP 800 repeat the adjustment at the second single stage gas valve If installing a Model LDAP 1200 repeat the adjustment at the second and third single stage gas valves 6 With the heater operating determine that the inlet pressure to the heater for natural gas is between 5 and 13 5 inches w c and for propane between 10 and 13 5 inches w c Take this reading at the inlet pressure tap of the first gas valve If the inlet pressure is not within the specified range the inlet pressure must be corrected and Steps 3 5 repeated 7 Find the High Altitude Adjustment label in the plastic bag that contained these instructions Using a permanent marker fill in the appropriate information from the BTUH Input amp Capacity by Altitude Table below Select a location for the label on the outside of the heater main access panel so that it will be conspicuous to anyone operating
3. aa Airflow direction Airflow direction springs are on springs are on the upper end the lower end Compression Spring Wider side of the louver blade must always be facing out of the heater WARNING This appliance is equipped for a maximum gas supply pressure of 1 2 psi 3 5 kPa or 14 inches water column Supply pressure greater than 1 2 psi requires installation of an additional lockup type service regulator external to the heater WARNING PRESSURE TESTING SUPPLY PIPING Test Pressures Above 1 2 PSI Disconnect the heater and manual valve from the gas supply line which is to be tested Cap or plug the supply line Test Pressures Below 1 2 PSI Before testing close the manual valve on the heater Capacity of Piping Cubic Feet per Hour based on 0 3 w c Pressure Drop Specific Gravity for Natural Gas 0 6 Natural Gas 1000 BTU Cubic Ft Specific Gravity for Propane Gas 1 6 Propane Gas 2550 BTU Cubic Ft Length Diameter of Pipe of 1 Pipe z8 409 1270 o 195 1 40 24 61 37 nos 67a 1850 1129 so o 3s 24 33 xs 9 s 160 976_ 1 99 x 19s 490 259 930 ser 1500 sis 186 168 Note When sizing supply lines consider possibilities of future expansion and increased requirements Refer to National Fuel Gas Code for additional information on line sizing Form RZ NA I LDAP P N 207733 Rev 2 Pa
4. 4 Jumper thermostat terminals RH to RC to W1 5 Set thermostat first stage anticipator at maximum amps and second stage anticipator at 0 6 amps LDAP 400 Thermostat Option CL1 CL2 CL3 CL7 or CL18 WD 189504 REV 2 FIGURE 11 Thermostat Connections for Model LDAP 800 with Option CL1 CL2 CL3 CL7 or CL18 CL2 CL2 WR 1 30 341 W S23 6 SUBBASE SEE NOTE 1 OPT CL3 T874F THERMOSTAT OR OPT CL1 W R 1C30 341 THERMOSTAT SEE NOTE 1 TERMINAL STRIP LDAP 800 THERMOSTAT WIRING FIELD WIRING NOTES 1 Set the anticipator at 0 6 amps 2 Set thermostat first stage anticipator at 0 6 amps and second stage anticipator at 0 2 amps 3 Jumper thermostat terminals RH to RC 4 Jumper thermostat terminals RH to RC and G to 5 Set thermostat first stage anticipator at maximum amps and second stage anticipator at 0 6 amps LDAP 800 Thermostat Option CL1 CL2 CL3 CL7 or CL18 WD 189505 REV 2 TERMINAL SINGLE STAGE HEATING SINGLE STAGE HEATING SINGLE STAGE HEATING TWO STAGE HEATING WITH RECIRCULATION OPT CL2 W R 1C30 341 W S23 6 SUBBASE SEE NOTE 1 OPT CL18 T874F THERMOSTAT Q674C SUBBASE SEE NOTES 4 amp 5 SEE NOTES 4 8 5 r 9 1 3 874 THERMOSTAT OR OPT CL1 1C30 341 THERMOSTAT OPT CL7 T874F THERMOSTAT Q674G SUBBASE SEE NOTE 5 TERM
5. 40 VA CONTROL 40 VA CONTROL 40 VA CONTROL TRANSFORMER TRANSFORMER TRANSFORMER BL BL BR BL BR BL BR BR 7 BL BR 7 BL BR 7 MAIN COMBUSTION AIR PRESSURE BL BR 7 NO 3 1 o BR BR BR 7 3 1 BR BR ADJUSTABLE DESTRAT Onn FAN CONTROL BL R BR 5 d BR 7 LLL 180 10 Emm See NOTE 6 on Page 22 BR 7 Y SCREW 1 REMOTE DESTRAT RELAY CONTACTS 1 FAN iue o PERMISSIVE 1 DESTRAT 2l SEE CHART PAGE 23 FOR RELAYCONTACTS RELAY CONTACTS SWITCH SETTINGS P 20uF CAPACITOR Y REMOTE MOUNTED zu R R 55 E fei MANUAL RESET HIGH LIMIT CONTROL Limit _ g CONTROL p R PRESSURE SWITCH Y 1 1 HEAT PERMISSIVE RELAY CONTACTS Y BK BK 4 VENTER BL GAS VALVE BLY BR V 4uF CAPACITOR REMOTE MOUNTED FLAME R SPARK ELECTRODE 1 D 5 TRANSFORMER w BR CONTROL mA FLAME GROUND w BR BR ee eee ee 11 ___ 1 The above control wiring is repeated in the second and third heat sections 1 HEAT PERMISSIVE RELAY COIL 42 2 HEAT PERMISSIVE RELAY COIL 64 3 HEAT PERMISSIVE RELAY COIL 86 1 DESTRAT RELAY COIL 34 2 DESTRAT RELAY COIL 56 3 DESTRAT RELAY COIL 78 1 FAN PERMISSIVE RELAY COIL 34 35 1 VENT PERMISSIVE RELAY COIL 12 1 REMOTE DESTRAT RELAY
6. a Defective valve a If 24 volt is measured at the valve connections and valve remains closed replace valve b Loose wire connections b Check and tighten all wiring connections 9 Integrated circuit board does not power main valve 9 a Loose wire connections a Check and tighten all wiring connections b Flame sensor grounded b Be certain flame sensor lead is not grounded or insulation or ceramic is not cracked Replace as required c Incorrect gas pressure c Supply pressure should be 5 14 w c for natural gas or 11 14 w c for propane gas d Cracked ceramic at sensor d Replace sensor Form RZ NA I LDAP P N 207733 Rev 2 Page 39 General Troubleshooting cont d Burner cycle on and off 1 Gas pressure too high too low 1 Supply pressure should be 5 14 w c for natural gas or 11 14 w c for propane gas 2 Burner not grounded in integrated circuit board is grounded to ignitor 3 Circuit board not grounded 3 Make certain integrated circuit board is grounded to furnace chassis 4 Faulty integrated circuit board 4 If 24 volt is available to the integrated circuit board and all other causes have been eliminated replace board 5 Combustion air proving switch es not 5 closing Make sure unit is properly vented b Remove obstructions from vent c Replace faulty tubing to pressure switch 7 Flame sensor grounded 7 Be certain flame sensor lead is not grounded or insulation or cer
7. Single Stage Valve Output 1 8 Output Adjustment Pressure Tap Screws Inlet gt Pressure gt 9 97 Two Stage Valve optional on Model LDAP 400 only Adjust Low Pressure Output Adjust High Pressure Output Pressure Tap 1 8 Output Pressure Tap Instructions 1 Locate the 1 8 output pressure tap on the first valve See FIGURE 8 With the manual valve turned off to prevent flow to the gas valve connect a manom eter to the 1 8 pipe outlet pressure tap in the valve NOTE A manometer fluid filled gauge is recommended rather than a spring type gauge due to the difficulty of maintaining calibration of a spring type gauge 2 Open the manual valve and operate the heater Measure the outlet pressure of the gas valve To measure low stage pressure on a Size 400 unit equipped with a two stage valve disconnect the wire from the HI terminal on the valve Be sure to reconnect wire after testing Normally when operating at sea level adjustments should not be necessary to the factory setting s For high altitude settings see below If adjustment is neces sary remove the cap from the adjustment screw s Set pressure to correct settings by turning the regulator screw IN clockwise to increase pressure Turn regulator screw OUT counterclockwise to decrease pressure 3 If installing a Model LDAP 800 repeat to verify outlet pressure on second valve If installing a Model LDAP 1200 repeat to verify outlet p
8. WHICH COULD CAUSE SERIOUS PERSONAL INJURY OR DEATH Always comply with the combustion air requirements in the installation codes and in Paragraph 9 Combustion air at the burner should be regulated only by manufacturer provided equipment NEVER RESTRICT OR OTHERWISE ALTER THE SUPPLY OF COMBUSTION AIR TO ANY HEATER Heaters installed in a confined space must be supplied with air for combustion as required by Code and in Paragraph 9 of this heater installation manual MAINTAIN THE VENT SYSTEM IN STRUCTURALLY SOUND AND PROPER OPERATING CONDITION Form RZ NA I LDAP P N 207733 Rev 2 Page 31 OPTIONAL ACCESSORIES 26 4 Way Discharge Louvers Option CD32 27 Nozzles FIGURE 21A One heat section with Option CD58 60 Nozzle Standard individually adjust able louvers are installed in the nozzle discharge MAINTENANCE AND SERVICE WARNING If you turn off the power supply turn off the gas See Hazard Levels page 2 28 Maintenance Schedule NOTE If replacement parts are required use only factory authorized parts Model LDAP heaters have discharge louvers but are available with additional louvers and or nozzle discharge air options Optional louver and discharge nozzles are shipped separately for field installation Model LDAP 800 and 1200 heat sections have independent airflow and do not require the same discharge options Each pack age includes illustrated installation instructions Option CD32 consists
9. minimum flame current at the control module Is there minimum flame current at the flame sensor YES NO Is gas flowing Clean flame sensor Is there 24VAC at the gas valve Is the ignitor position correct in the gas flow Reposition spark ignitor Is the flame sensor corroded YES Replace gas valve Check wiringand YES connections to gas valve 15 the sensor located in flame correctly Repositon flame sensor General Troubleshooting Is there 24VAC from gas valve output on control module to chassis Replace ignition control module PROBLEM PROBABLE CAUSE REMEDY Venter motor will 1 power to unit 1 Turn on power check supply fuses or main circuit breaker not start 2 No 24 volt power to integrated circuit board 2 Turn up thermostat check control transformer output 3 Integrated circuit board fuse blown 3 Correct cause Replace fuse type or ATO 32VDC 3 4 No power to venter motor 4 Tighten connections at circuit board and or motor terminals 5 Integrated circuit board defective 5 Replace intergrated circuit board 6 Defective venter motor 6 Replace venter motor See Paragraph 32 Burner will 1 Manual valve not open 1 Open manual valve not light 2 Airin the gas line 2 Bleed gas line initial startup only 3 Gas pressure too high ortoo low 3 Supply pressure should be 5 14
10. 872 877 optional nozzle is to be field installed Determining the need for installing vibration or noise isolation is the responsibility of the installer To prevent potential movement field supplied angles must be placed around the perimeter of the heater to anchor it Side View o Model LDAP 1200 Dimensions are 3 heat sections centerline of the Front View mounting angles X and apply to all sizes to the structural supports 34 33 64 Structural supports must be placed as 877mm shown to prevent damage to the heater structural supports must be non combustible materials 34 43 64 34 33 64 881mm 877mm 4 42 12 1080mm Form RZ NA I LDAP P N 207733 Rev 2 Page 9 11 Installing Heater and Louvers cont d Installing Louvers NOTE Do not install louvers if installing a nozzle Follow the instructions shipped with the nozzle FIGURE 6 Use Compression Springs to Install Louvers in the Discharge Opening s CAUTION To avoid getting burned adjust louvers while heater is not operating If adjusting louvers while heater is operating wear gloves 12 Gas Piping and Pressures Sizing Gas Supply Line WARNING All com ponents of a gas supply system must be leak tested prior to placing equipment in service NEVER TEST FOR LEAKS WITH AN OPEN FLAME Failure to comply could result in personal injury p
11. COIL 33 Form RZ NA I LDAP P N 207733 Rev 2 Page 25 2 4 Venti ng Model LDAP heaters are certified as Category III heaters WARNING Each heater requires its own individual vent pipe run and vent cap Manifolding of vent runs can cause recirculation of combustion products into the building Failure to comply could result in severe personal injury or death and or property damage Venting must be in accordance with local codes and the National Fuel Gas Code Z223 1 or CSA B149 1 and B149 2 Installation Code for Gas Burning Appliances and Equipment Local requirements supersede national requirements These power vented heaters are designed to operate safely and efficiently with either a horizontal or vertical vent Comply with the specific requirements and instructions If this heater is replacing an existing heater be sure that the vent is sized properly for the heater being installed and that the existing vent is in good condition A properly sized vent system is required for safe operation of the heater An improperly sized vent system can cause unsafe conditions and or create condensation Do not vent into an existing gravity vent or chimney Installation should be done by a qualified agency in accordance with these instruc tions The qualified service agency installing this system is responsible for the instal lation Venting 1 Type of Vent Pipe Requirements The type of vent pipe is determined by whether the vent is horizontal o
12. LIMIT we CONTROL LIMIT s Rz CONTROL p 3H FAN PERMISSIVE amp R RELAY COIL B E 30 31 z PRESSURE o y SWITCH Y m 3 u 1 HEAT PERMISSIVE RELAY CONTACTS a Y BK z 4 m gt a GAS VALVE BR 2 BE m L FLAME R 4uF CAPACITOR ELECTRODE REMOTE MOUNTED aa SPARK PERMISSIVE 2 1 D S TRANSFORMER w RELAY COIL FLAME Paes oe GROUND SPARK GAP y 4L mo BR BR RELAY COIL m 45 A N 46 TERMINAL STRIP UNIT 1 eee eee LE mmi 48 E BL 49 50 51 Form RZ NA I LDAP 207733 Rev The above control wiring 15 epeated in the second heat sectian 2 Page 24 FIGURE 16 Typical Wiring Diagram for Model LDAP 1200 Reference W D 189376 Rev 2 14 15 16 17 18 Y n Y Y x x N x N 5 8 R N 8 8 32 33 34 35 36 37 38 39 40 4 42 43 45 46 47 208 OR 230 1 60 CUSTOMER S FUSIBLE DISCONNECT SWITCH SEE NOTES on page 22 VENT PERMISSIVE RELAY CONTACTS 2 VENT PERMISSI RELAY CONTAC LOCKABLE DISCONNECT 99 d RI u BK MAIN VENTER MOTOR amp CAPACITOR IVE TS 3 VENT PERMISSIVE RELAY CONTACTS SEE NOTE 7 LINE VOLTAGE LINE VOLTAGE SEE NOTE 7 on page 22 LINE VOLTAGE on page 22 SEE NOTE 7 on page 22
13. The fan control setting should be set 5 to 10 F higher than the wall mounted thermostat setting The heater is factory wired to energize the fan s at medium speed when energized by the adjustable fan control For lower mounting heights it may be desirable to operate the fan s at low speed Switching the blue medium speed and red low speed fan motor wires on each heat section will change the fan motor s speed Refer to the wiring diagram for the wire locations To manually override the fan control the heater may be tuned off at the circuit breaker in the main electrical panel or a field installed electrical box with a SPST switch can be located near the wall thermostat with the switch wired in series with the fan con trol The air destratification can also be a benefit in the summer time Using the fan s in the summer time can improve working conditions by alleviating stagnant air condi tions and creating a cooling effect for the occupants 20 Ignition Each heat section in this heater is equipped with a direct spark integrated control System module circuit board The module monitors the safety devices and controls the operation of the fan and venter motors and the gas valve between heat cycles FIGURE 13 DSI 0 03 210 m Integrated Control mu dei au que lt Module circuit Transformer board in Each Heat Section ogo Thermostat Connections Supply Voltage Connections 24VAC 50Hz 5A ANSI 221 20 AUTOM
14. To prevent injury or death due to electrocution or contact with moving parts lock disconnect switch open See Hazard Levels page 2 WARNING If you turn off the power supply turn off the gas See Hazard Levels page 2 Model LDAP supply wiring enters above and connects directly to the disconnect switch See FIGURE 1 or 1B in Paragraph 7 and FIGURE 9 A circuit board See FIGURE 13 in Paragraph 20 is located in the control compartment of each heat section The circuit boards are polarity sensitive It is advisable to check the electrical supply to be certain that the black wire is the hot wire and that the white wire is the neutral wire The supply connection made to L1 on the disconnect switch must be the hot wire Each heat section in the heater has a terminal strip for 24 volt thermostat connec tions The terminal strip is located on the outside of the cabinet at the front of each heat section See FIGURE 1A or 1B in Paragraph 7 Wires from the terminal strip s are factory wired to the circuit board s Use either an optional thermostat available with the heater or a field supplied 24 volt thermostat Install according to the thermostat manufacturer s instructions paying particular attention to the requirements regarding the location of the thermostat Make sure that the heat anticipator setting on the thermostat is 0 6 amps or in accor dance with the amperage value noted on the wiring diagram of your heater Make t
15. Z Distance from 0 to the point 749 m 2 1 47 SI 20 NA NA where the air velocity drops below 50 17 45 96 NA NA NA NA NA rows listed are with standar fouyeroficing oneditecton and fully open Throw pattern changes row meters sath buverangls 2 wavdouser eue i Im d joues Form RZ NA I LDAP 207733 Rev 2 Page 7 10 Heater Sound Chart Model LDAP Model DISTANCE Location j cont d Size db ubar db ubar ubar 18 Pa bar db Pa ubar a00 e 0 058 0580 65 0037 0371 6 0 026 0258 60 0 019 0 189 57 0015 01145 Sound Data 7 oo oso ss oosr 0512 65 0 036 0356 62 0 026 0261 60 0020 0200 ubar microbar Pascal Location For best results the heater should be placed with certain rules in mind In general a heater should be located from 15 40 feet 4 6 12 2 M above the floor If two or more Recommendations heaters are installed in the same room a general scheme of air circulation should be maintained for best results NOTE Venting Suspended heaters are most effective when located as close to the working zone as possible and this fact should be kept in mind when determining the mounting heights to be used However care should be exercised to avoid directing the discharged air directly on the room occupants Partitions columns counters or other obstructions sh
16. assembly only must be added to each of the slave heaters The option packages are shipped separately and include complete instructions for installa tion and wiring Form RZ NA I LDAP P N 207733 Rev 2 Page 16 1 6 Combu stion The combustion air proving switch is a pressure sensitive switch that monitors air pressure to ensure that proper combustion airflow is available The switch is a single Air Proving pole normally open device which closes when a differential pressure is sensed be p tween the venter housing and the flue collection box Each section in the heater has a ressure pressure switch For switch location see FIGURE 22 page 33 In addition heaters Switch es with more than one heat section Size 800 and Size 1200 have a main pressure switch which senses the negative pressure in the main venter housing NOTE For high altitude follow instructions in Paragraph 5 to change heat section pressure switch es The main combustion air pressure switch Sizes 800 and 1200 only does not need to be changed for a high altitude installation On startup when the heater is cold the sensing pressure is at the highest level and as the heater and flue system warm up the sensing pressure becomes less After the system has reached equilibrium about 20 minutes the sensing pressure levels off If a restriction or excessive flue length or turns cause the sensing pressure to be out side the switch setpoint the press
17. or servicing the heater Be sure the surface is clean and dry and adhere the label High Altitude The input and or the capacity of the heater changes with the derate The tables below g list inputs and capacities at altitudes from sea level to 10 000 ft 3045M for the U S Capacity Changes and to 4500 ft 1373M for Canada BTUH Inputs amp Capacities by Altitude in the UNITED S TATES for Model LDAP Altitude paio Thermal Output see Thermal Output in posue Thermal Output Minimum Capacity Capacity Capacity Size 400 Lam l oien amn T sum xum sm emn 400000 TO 9001 10000 2746 3045 L6 asso 2400 eio s3200 2000 seco esr 0000 BTUH Inputs amp Capacities by Altitude in the CANADA for Model LDAP Altitude pony Thermal Output io pen Thermal Output Thermal Output Minimum Capacity Capacity Capacity Input Feet Meters Size 400 Size 800 Size 1200 0 2000 610 332000 664000 400000 1200000 996000 2001 4500 611 1373 360000 298800 270000 597600 360000 1080000 896400 360000 1 3 Bu rners Each heat section in this heater has a one piece 2 burner assembly U S Patent No 6 889 686 designed to provide controlled flame stability without lifting or flashback with either natural or propane gas The burner can be removed as a unit for inspection or service see Maintenance Section for removal instructions 1 4 EI ectri C al electrical wirin
18. w c for natural gas or 11 14 w c for propane gas 4 No Spark 4 a Loose wire connections a Be certain all wire connections are solid b Transformer failure b Be sure 24 volts is available c Incorrect spark gap c Maintain spark gap at 1 8 d Spark cable shorted to ground d Replace worn or grounded spark cable Spark electrode shorted to ground Replace if ceramic spark electrode is cracked or grounded f Burner not grounded f Make certain integrated circuit board is grounded to ignitor 8 Circuit board not grounded Make certain integrated circuit board is grounded to furnace chassis h Unit not properly grounded h Make certain unit is properly field grounded to earth ground and properly phased L1 to hot lead L2 to neutral 1 Integrated circuit board fuse blown i Correct cause Replace fuse type or ATO 32VDC j Faulty intergrated circuit board If 24 volt is available to the integrated circuit board and all other causes have been eliminated replace board 5 Lockout device interrupting control circuit by above causes 5 Reset lockout by interrupting control at the thermostat or main power 6 Combustion air proving switch 6 not closing a Make sure unit is properly vented b Remove obstructions from vent c Replace faulty tubing to pressure switch 7 Faulty combustion air proving switch 7 Replace combustion air proving switch 8 Main valve not operating 8
19. 3 ft 0 9M Canada 6 ft 1 8M Adjacent public walkways 7 ft 2 1M above Do not terminate the vent directly above a gas meter or service regulator Consider local snow depth conditions The vent must be at least 6 152mm higher than Minimum Clearances for Vent Termination Location all directions unless specified 3 ft 0 9M above 6 ft 1 5M 4 ft 1 2M horizontally 4 ft 1 2M below 1 ft 305mm above US 4 ft 1 2M horizontally Canada 6 ft 1 8M horizontalh 6 ft 1 85M 1 ft 305mm above FIGURE 18 Horizontal Vent Terminal NOTE Read all measurements drawing is not proportional Follow the instructions in FIGURES 16B and 16C pages 26 and 27 to join a double wall vent terminal section to a single wall vent run and to the vent cap Roof or Building Overhang ll M minimum 6 ft 1 8M minimum Double Wall or Category III Terminal Vent Pipe Reznor Option CC1 or Equivalent Vent Cap Vent Run note positions of vent cap Comply L openings shaded areas with Re Pitch flue pipe down toward quirements outlet 1 4 per foot for con No 1 amp 2 densate drainage NOTE Slope on page 25 applies to entire horizontal vent run A clearance thimble is required when flue pipe extends through combustible materials Follow the requirements of the thimble and or the vent pipe manufacturer gKrkrrFrFrFFFFFFFrrFFFFFrFFFFFFF
20. ATIC umo d CP en D n coi Fan Blower Off Delay z HO Status u Lights x a 0 Form RZ NA I LDAP 207733 Rev 2 Page 18 Normal Heat Cycle Operating Sequence NOTE LED Flash Codes are on page 38 Switch Settng Chart for Fan OFF Delay See SW1 on W D TIME SWI SW2 Abnormal Heat Cycle Functions 1 Call for Heat The thermostat calls for heat by energizing the W terminal The control checks to see that the limit and high limit switches are closed and the heat section pressure switch is open and the main combustion air pressure switch Sizes 800 and 1200 is open If the limit or high limit switch is open the control responds as defined in the Abnormal Heat Cycle Limit Switch Operation If the heat section pressure switch or main combustion air pressure switch are closed the control will do four flashes on the green LED and wait indefinitely for the heat section pressure switch or main combustion air pressure switch to open If the heat section pressure switch and main combustion air pressure switch are open the control proceeds to prepurge 2 Prepurge The control energizes the heat section venter motor and main venter motor Sizes 800 and 1200 and waits for the heat section pressure switch and main combustion air pressure switch to close If the heat section pressure switch or main combustion air pressure switch does not close within 30 seco
21. Differential Pressure in w c 1 175t0 1 45 1 00t00 80 0 60 078 197029 so 125 055 015 033 Gy 20545 1asi0 185 100 055 oeo 07s Jr 1200 1 35 to 0 85 0 92 to 0 54 0 15 0 33 Gray 205445 3 23510 1 85 150t0095 0 60 078 fit Blue 197029 DANGER Safe operation of this heater requires proper venting flow NEVER bypass combustion air proving switch es or attempt to operate the heater without the venter running and the proper flow in the vent system Hazardous conditions could result See Hazard Intensity Levels page 2 1 7 Limit Co ntrol Each heat section is equipped with a temperature activated auto reset limit control The control is factory set and is non adjustable If the setpoint is reached the limit control will interrupt the electric supply to the gas valve in that heat section This safety device provides protection in the case of motor failure or lack of airflow due to a restriction at the inlet or outlet For location see FIGURE 22 page 33 CAUTION The auto reset limit control will shut down the heater until the cause is corrected Do not bypass the limit control hazardous conditions could result See Hazard Intensity Levels page 2 1 8 H h Li it Each heat section is equipped with a temperature activated manually reset high limit Ig Imi control The high limit control is located at the top of each heat section It is factor
22. FFFFFFFF Parapet or Adjoining Building FIGURE 19 Vertical Vent Terminal NOTE Read all measurements drawing is not proportional Reznor Option CC1 or equivalent vent cap SS 6 ft 1 8M 4 minimum Double Wall or Category Terminal Vent Pipe Parapet or Adjoining Building Roof Flashing Roof pitched from 0 to 45 6 152mm minimum A clearance thimble is required when flue pipe extends through combustible materials Follow the requirements Follow the instructions in FIGURES 16B of the thimble and or the vent pipe and 16C pages 26 and 27 to join a double manufacturer wall vent terminal section to a single wall Vent Pipe Comply with Requirements vent run and to the vent cap No 1 and 2 on Duc 25 Form RZ NA I LDAP P N 207733 Rev 2 Page 29 25 Check Installation and Startup Check the installation prior to startup Heater Startup and Warnings Operating Instructions and Operating Sequence Check to be sure that all screws used to hold shipping brackets were re installed in the heater cabinet Check suspension Heater must be secure and level Check clearances from combustibles Requirements are in Paragraph 8 Check vent system to be sure that it is installed according to the instructions in Paragraph 24 Check piping
23. G Red Low Optional Destratification Speed Field Wired 45sec ON ON Blue BL Purple PR White W Terminal Block Heat Section 1 Terminal Block Heat Section 2 ps bi ies m o Contro ire Gauge Terminal Block Heat Section 3 150 ft 46M 75 ft 23M 18 Gauge Factory Wiring 250 ft 76M 125 ft 38M 16 Gauge Field Wiring 350 ft 107M 175 ft 53M 14 Gauge FIGURE 14 Typical Wiring Diagram for Model LDAP 400 Reference W D 189374 Rev 2 CUSTOMER S FUSIBLE LOCKABLE ON OFF DISCONNECT DISCONNECT SWITCH SEE NOTES on page 22 2 e 5 T2 8 8 x o o 8 n mE 10 GRD LINE VOLTAGE n nM SEE NOTE 7 on page 22 m B B Y Y 40 VA CONTROL TRANSFORMER BR 14 ADJUSTABLE DESTRAT FAN CONTROL DESTRAT 15 RELAY COIL 22 REMOTE 16 DESTRAT RELAY COIL 21 17 19 20 SCREW REMOTE DESTRAT N RELAY CONTACTS PR B 21 DESTRAT RELAY 2 4 S SEE CHART AT TOP OF PAGE FOR CONTACTS SWITCH SETTINGS 22 c o 23 20uF CAPACITOR LL REMOTE MOUNTED 5 g 24 e3 u a 5 S 2 a 2 25 BL F BL MANUAL o RESET HIGH LIMIT 26 CONTROL LIMIT wi g CONTROL amp 27 FAN PERMISSIVE 28 ALT HONEYWELL PRESSURE RELAY COIL TWO STAGE SWITCH 22 23 GAS VALVE 29 wv BL BR HONEYWELL TWO STAGE E GAS VALVE ald 66 ALT HONEYWELL SINGLE STAGE GAS VALVE BL T
24. HERMOSTAT WIRING R FIELD WIRING FACTORY WIRING CRIMP TERMINAL Cy w2 Y1 NOTES 1 Set the anticipator at 0 6 amps 2 For 400 000 BTUH low fire do Y2 not install this jumper 3 For 800 000 BTUH low fire do TERMINAL STRIP 7 TERMINAL STRIP not install this jumper ICM um 4 Set thermostat first stage anticipator Gd G at 0 6 amps and and second stage anticipator at 0 2 amps 5 Jumper thermostat terminals RH W1 W1 to RC 6 Jumper thermostat terminals RH to RC and G to W1 R 7 Set thermostat first stage anticipator at maximum amps and second stage anticipator at 0 6 amps w2 w2 LDAP 1200 Thermostat Option CL1 CL2 CL7 or CL18 WD 189506 REV 2 R YA g Y1 Y2 Y2 1 TERMINAL STRIPUNIT 3 TERMINAL STRIP UNIT 3 TERMINAL STRIP UNIT 3 Multiple Heater If the heater was ordered with a multiple heater control option one thermostat can be used A to control multiple heaters The option will control a maximum of six Size 400 heaters a Control Option maximum of three Size 800 heaters or a maximum of two Size 1200 heaters CL31 and Option The option includes a 40 VA transformer that replaces the standard transformer in the CL32 master heater and a relay assembly that attaches to the slave heater Option CL31 provides for control of two heaters If control of additional heaters is desired Option CL32 which is the relay
25. INAL STRIP OPT CL18 T874F THERMOSTAT Q674C SUBBASE io o 2 2 17 T874F THERMOSTAT SEE NOTE 5 UNIT 1 STRIP UNIT 2 Q674C SUBBASE SEE NOTE 2 AND 3 OPT CL18 T874F THERMOSTAT Q674G SUBBASE SEE NOTE 42 9 CL7 T874F THERMOSTAT SINGLE STAGE HEATING WITH RECIRCULATION 06742 SUBBASE SEE NOTE 2 AND 3 CL18 T874F THERMOSTAT OPT CL7 T874F THERMOSTAT SEE NOTE 2 TERMINAL STRIP UNIT 1 TERMINAL STRIP UNIT 2 TERMINAL STRIP UNIT 2 Form RZ NA I LDAP P N 207733 Rev 2 Page 15 15 Thermostat and Connections cont d SINGLE STAGE HEATING SINGLE STAGE HEATING IWOSTAGE HEATING FIGURE 12 Thermostat CL2 WITH RECIRCULATION Connections for Model LDAP 1200 with Option CL1 CL2 CL3 CL7 or CL18 OPTCL2 WR 1630 344 W S23 6 SUBBASE SEE NOTE 1 6740 SUBBASE SEE NOTES 6 amp 7 OPT CL18 T874F THERMOSTAT SEE NOTE 4 AND 5 Y1 Q674G SUBBASE SEE NOTE 7 CL7 T874F THERMOSTAT Q674G SUBBASE SEE NOTE 4 Y2q ovr THenwostaron OPT CL1 W R 1C30 341 THERMOSTAT SEE NOTE 1 l OPT 17 T874F THERMOSTAT TERMINAL STRIP UNIT 1 TERMINAL STRIP UNIT 1 TERMINAL STRIP UNIT 1 Gy W1 LDAP 1200 T
26. L conditions enough air must be provided to ensure there will not be a negative pressure condition within the equipment room or space WARNING A Model LDAP power vented heater is designed to take combustion air from the space in which the heater is installed and is not designed for connection to outside combustion air intake ducts Connecting outside air ducts voids the warranty and could cause hazardous operation See Hazard Levels page 2 Combustion Air Requirements for a Heater Located in a Confined Space Do not install a heater in a confined space without providing wall openings leading to and from the space Provide openings near the floor and ceiling for ventilation and air for combustion as shown in FIGURE 2 depending on the combustion air source as noted in Items 1 2 and 3 below Add total BTUH of all appliances in the confined space and divide by figures below for square inch free area size of each top and bottom opening 1 Air from inside the building openings 1 square inch free area per 1000 BTUH Never less than 100 square inches free area for each opening See 1 in FIGURE 2 2 Air from outside through duct openings 1 square inch free area per 2000 BTUH See 2 in FIGURE 2 3 Air direct from outside openings 1 square inch free area per 4000 BTUH See 3 in FIGURE 2 NOTE For further details on supplying combustion air to a confined space see the National Fuel Gas Code ANSI Z223 1a latest edition Form RZ
27. NA I LDAP P N 207733 Rev 2 Page 6 1 0 Heater Use the clearances in Paragraph 8 the combustion air requirements in Paragraph 9 the mounting height requirements throw information sound data and location rec Location ommendations below the weights in Paragraph 11 and the venting requirements in Paragraph 24 to determine where to suspend the heater CAUTION Do not locate the heater where it may be exposed to water spray rain or dripping water Mountin g Heig ht Locate the heater so that it is a minimum of 15 feet 4 6M above the floor and in compliance with the clearances in Paragraph 8 WARNING If touched the vent pipe and internal heater surfaces that are accessible from outside the heater will cause burns Suspend the heater a minimum of 15 feet 4 6M above the floor Heater Throw Models FIGURE 3 Model LDAP Air Throw Heat Mode High Speed Applies to Sizes EN un Who ee 60 Nozzle Mounting NN 30 Nozzle x Standard Louvers 30 Nozzle Y 7 X 60 Nozzle Y Z 0 Rear of Heater Discharge NOTES Throw feet and meters X Distance from 0 to beginning Standard Louvers 30 Degree Nozzle 60 Degree Nozzle of floor coverage X Y 7 7 x 7 Distance from 0 to end of Throw feet floor coverage x ps Ss me 95 5 Length of floor coverage Y X 3 s rn 4 s 13 76 19 5
28. VNIWH31 gt 4uF CAPACITOR REMOTE MOUNTED SPARK TRANSFORMER ELECTRODE GAS VALVE FE AEN DSI CONTROL FLAME GROUND Form RZ NA I LDAP P N 207733 Rev 2 Page 23 23 Wiring Diagrams cont d FIGURE 15 Typical Wiring Diagram for Model LDAP 800 Reference W D 189375 Rev 2 CUSTOMER S FUSIBLE DISCONNECT SWITCH SEE NOTES on page 22 208 OR 230 1 60 10 LOCKABLE ON OFF DISCONNECT T3 hi T2 Ti 12 MAIN 1 VENT PERMISSIVE VENTER MOTOR RELAY CONTACTS amp CAPACITOR BK H BK PR PR Y 13 2 4 2 VENT PERMISSIVE 4 RELAY CONTACTS BK BK BK PR PR Q 41 89 5 LINE VOLTAGE 46 See NOTE 7 on page 22 LINE VOLTAGE See NOTE 7 on page 22 17 40 VA CONTROL 40 VA CONTROL TRANSFORMER g TRANSFORMER 18 19 PRESSURE 1 HEAT PERMISSIVE SWITCH RELAY COIL 38 2 HEAT ADJUSTABLE PERMISSIVE DESTRAT RELAY COIL FAN CONTROL 62 1 DESTRAT 22 RELAY COIL 2 DESTRAT 23 RELAY COIL 2 26 27 SCREW 1 REMOTE DESTRAT RELAY CONTACTS 29 i 1 FAN To oL PR PERMISSIVE 1 DESTRAT m R SEE CHART PAGE 23 FOR RELAY CONTACTS RELAY CONTACTS SWITCH SETTINGS wi 20uF CAPACITOR REMOTE MOUNTED 2 32 Fr R R R lt 65 ot le BL BL 3 MANUAL HISH
29. When the heater leaves the factory the combination gas valve s is set so that the valve outlet gas pressure for a single stage valve or high fire of a two stage valve is regulated to 10 w c Low fire on a two stage valve Size 400 only is set to 5 0 w c Inlet supply pressure to the heater for propane gas must be a mini mum of 11 w c and a maximum of 14 w c Before attempting to measure or adjust valve outlet gas pressure the inlet supply pressure must be within the specified range both when the heater is in opera tion and on standby Incorrect inlet pressure could cause excessive valve outlet gas pressure immediately or at some future time If natural gas supply pressure is too high install a regulator in the supply line before it reaches the heater If natural gas supply pressure is too low contact your gas supplier Form RZ NA I LDAP P N 207733 Rev 2 Page 11 12 Gas Pressures cont d Check Valve Outlet Pressure can only be done after heater Is operating NOTE If operating at high altitude outlet pressure requires adjustment Follow instructions below NOTES If installation is above 6000 ft 1830M a high altitude pressure switch is required on each heat section all sizes See Paragraph 5 The main combustion air pressure switch Sizes 800 and 1200 only does not need to be changed for high altitude installation FIGURE 8 Top View of Valves showing Outlet Pressure Tap and Adjustment Locations
30. amic is not cracked Replace as required 9 Reverse line volt leads to integrated circuit board No heat Heater Check valve outlet pressure See Rating plate for manifold pressure Operating Fan or venter motor will Check wiring and connections not run Fan or venter motor turns 1 Motor overload device cycling on and off 1 Check motor load against motor rating plate Replace motor if needed on and off while burner is operating Fan or venter motor cuts out on overload 4 Lubricate bearings motor permitting or replace motor FOR SERVICE OR REPAIR FOLLOW THESE STEPS IN ORDER Contact the Installer Name Address Phone SECOND Contact the nearest distributor See Yellow Pages If no listing contact Authorized Factory Representative 1 800 695 1901 Press 1 THIRD Contact REZNOR Thomas amp Betts Corporation 150 McKinley Avenue Mercer PA 16137 Phone 724 662 4400 Model No Heater Serial No Date of Installation 800 695 1901 www RezSpec com Thomas Betts 2005 Thomas amp Betts Corporation All rights reserved MANUFACTURER OF HEATING COOLING AND VENTILATING SYSTEMS Trademark Note Reznor and TCORE are trademarks of Thomas amp Betts Form RZ NA I LDAP P N 207733 Rev 2 Page 40 9 05 Form RZ NA I LDAP Version 2
31. and goes into lockout The control goes to one flash on the green LED to indicate ignition failure lockout Limit and High Limit Switch Operation The high limit and limit switch are ignored unless a call for heat is present W energized If the high limit or limit switch are open and a call for heat is present the control de energizes the gas valve and turns the fan motor on heat speed and runs the heat section venter motor and the main venter motor When the switch re closes or the call for heat is lost the control runs the heat section venter motor and main venter motor through post purge and runs the fan motor through the selected fan off delay The control will return to normal operation after fan off delay is completed Heat Section Pressure Switch all sizes and Main Combustion Air Pressure Switch Sizes 800 and 1200 If the heat section pressure switch or main combustion air pres sure switch opens before the trial for ignition period the heat section venter motor and main venter motor will run through the heat section pressure switch and main combus tion air pressure switch recognition delay 2 seconds the gas valve will be de energized and the heat section venter motor and main venter motor will run through the postpurge time The control will re start the heat cycle at the heat section pressure switch and main combustion air pressure switch proving state if the call for heat still exists Heat section pressure switch or main co
32. ature Re C ss s 5 Sy enea ema e EE Heat fe 367 735 1102 Sections Outlet Velocity Heat High Speed Air Volume Destratification Model LDAP 1200 Medium Speed One Heater with Outlet Velocity Destratification Three Downflow Medium Speed Heat Sections Air Volume Destratification gt Low Speed Outlet Velocity Destratification Low Speed 43 1 2 1 105mm Model LDAP 400 H 9 718 7 Dimensions 235 2 5 8 FIGURE 1A Model LDAP 400 LINE VOLTAGE CONNECTION 48 1 2 1 232mm DISCONNECT SWITCH 1 NPT GAS CONNECTION 38 965mm 30 762mm 2 18 17 1 8 samm 435mm 7 8 4 22mm RIGHT SIDE VIEW 14 718 378mm AIR DESTRATIFICATION FRONT VIEW FAN CONTROL 143mm HANGER LOCATION 1 2 13 FEMALE THREAD 6 FLUE OUTLET NOTE If an optional nozzle is added to the discharge opening see dimensions on page 32 387mm 34 3 8 873mm TOP VIEW BOTTOM VIEW DISCHARGE OPENING Form RZ NA I LDAP P N 207733 Rev 2 Page 4 FIGURE 1B Model LDAP800 Model LDAP1200 A Model LDAP1200 with three heat sections is illustrated A Model LDAP800 has two heat sections A Model LDAP800 is the same layout as illustrated le
33. ction If any light 18 observed replace the heat exchanger Instructions to Re Install the Burner Refer to FIGURE 23 1 Attach the Burner Assembly Holding the venturi tube slide the entire burner assembly into position Align the supports on the bottom with the slots in the burner shield sliding the supports into the slots On the top re attach each burner body support to the burner shield Form RZ NA I LDAP P N 207733 Rev 2 Page 34 31 Burner Orifice s 32 Ignition System S amp CAUTION Due to high voltage on the spark wire and electrode do not touch when energized See Hazard Levels page 2 Ignitor Wi m I Flame Sensor 33 Heat Section Venter Motor and Wheel 2 Attach the Gas Train Slide the gas train so that the orifice adapter is through the bracket Fasten the gas train to the bracket with the locking nut Install the gas orifice Re connect the wires to the gas valve Re connect the union s inside of the control compartment 3 Reconnect the gas supply at the union outside of the cabinet Turn on the gas supply and leak test the connections with leak detecting solution 4 Close the access panel 5 Turn on the electric Check for proper operation A burner orifice usually only needs to be replaced when installing a gas conversion kit If ordering replacement orifice s only give BTUH content and specific gravity of gas as well as the model and serial number o
34. e is present If the gas valve was sensed as closed when it should be open and has not de energized after the heat section venter motor and main venter motor was shutoff for 15 seconds then the heat section venter motor and main venter motor are re energized to vent the unburned gas Soft Lockout The control shall not initiate a call for heat or call for continuous fan while in lockout The control will still respond to an open limit and undesired flame Lockout shall automatically reset after one hour Lockout may be manually reset by removing power from the control for more than one second or removing the thermostat call for heat for more than one and less than 20 seconds Hard Lockout Green LED steady off If the control detects a fault on the control board the status LED will be de energized and the control will lockout as long as the fault remains A hard lockout will automatically reset if the hardware fault clears Power Interruption During a momentary power interruption or at voltage levels below the minimum operating voltage line voltage or low voltage the system will self recover without lockout when voltage returns to the operating range Power interruptions of less than 80mS shall not cause the control to change operating states Power interruptions greater than 80mS may cause the control to interrupt the cur rent operating cycle and re start Power interruption during a heat cycle may trip the manual reset high limit sw
35. e switch is shipped separately High Altitude Unit Pressure Switch es Size Qt Start up Cold Equilibrium Hot Setpoint OFF Setpoint Label Switch 4 Color Part No Differential Pressure in w c 400 1 17510145 10010080 060 078 Lt Blue 197029 800 2 185155 1050085 00 078 LtBlue 19702 120 3 235t0 1 85 15010095 060 078 _ It 197029 Switch es 1 In the control compartment of the first heat section locate the pressure switch Mark and disconnect the two wires attached to the pressure switch Mark and disconnect the sensing tubes from the pressure switch N Locate the two screws holding the switch mounting bracket Remove the screws save screws and the pressure switch 5 Using the same screws install the high altitude pressure switch Attach the sensing tubes and wires 6 If installing a Model LDAP 400 the pressure switch change for high altitude is complete If installing a Model LDAP 800 repeat Steps 1 5 to change the pressure switch on the second heat section If installing a Model LDAP 1200 repeat Steps 1 5 to change the pressure switches on the second and third heat sections Form RZ NA I LDAP P N 207733 Rev 2 Page 3 6 Technical Data Model LDAPSize 400 800 1200 _____ One Downflow Ree Heater Vent Connection Diameter 6 8 8 One Heater Discharge Air Temper
36. enance 38 Venter Motor Heat Section 95 Venter Motor Main e Wall Mounting eere ETE Warranty e Weights Indirect Fired Indoor Downflow Packaged Heaters Installation Operation FORM RZ NA I LDAP APPLIES TO Model LDAP Reznor N LDAP 1200 FOR YOUR SAFETY If you smell gas 1 Open windows 2 Don t touch electrical switches 3 Extinguish any open flame 4 Immediately call your gas supplier FOR YOURSAFETY The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous WARNING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operation and maintenance instructions thoroughly before installing or servicing this equipment WARNING Gas fired appliances are not designed for use in hazardous atmospheres containing flammable vapors or combustible dust in atmospheres containing chlorinated or halogenated hydrocarbons or in applications with airborne silicone substances See Hazard Levels page 2 WARNING Should overheating occur or the gas supply fail to shut off shut off the manual gas valve to the appliance before shutting off the electrical supply WARNING Do not use this appliance if any part has been under water Immediately call a qualified
37. ent double wall E spaced equal distance around ede the Venter pipe over ex the pipe drill and insert three the collar i 3 4 long sheetmetal screws A double wall pipe so that the through the pipe and into the run is allowed only if collar is collar Do not over tighten the at least 75 of the inside the Collar screws vent length is vertical inner pipe inside the pipe around the collar with silicone sealant being sure there are no gaps FIGURE 17B Attaching Double Wall Type B Pipe to a Vent Cap Figure 17B STEP 1 Figure 17B STEP 2 Figure 17B STEP 3 Place a continual 3 8 bead of Insert the collar on the vent cap inside the Secure the vent cap to the silicone sealant around the inner wall of the double wall pipe Insert double wall pipe by drilling circumference of the vent cap collar far as possible Add additional silicone sealant and inserting a This will prevent any water inside to fully close any gaps between the vent cap 3 4 long sheetmetal screw the vent cap from running down the and the double wall pipe This is necessary to into the vent cap collar Do double wall pipe prevent water from entering the double wall not over tighten screw pipe Do STEP 2 immediately following STEP 1 Form RZ NA I LDAP P N 207733 Rev 2 Page 27 24 Venting cont d Venting Requirements cont d 4 Joints and Sealing cont d FIGURE 17C Attaching Double Wall T
38. f local codes in the United States the heater must be installed in accordance with the National Fuel Gas Code ANSI Z223 1 A Canadian installation must be in accordance with the CSA B149 Installation Codes These codes are available from CSA Information Services 1 800 463 6727 Local authorities having jurisdiction should be consulted before installation is made to verify local codes and installation procedure requirements Installations in aircraft hangars should be in accordance with ANSI NFPA No 409 latest edition Standard for Aircraft Hangars in public garages in accordance with ANSI NFPA No 88 latest edition Standard for Parking Structures and for repair garages in accordance with ANSI NFPA No 88B latest edition Standard for Repair Garages In Canada installations in aircraft hangars should be in accordance with the requirements of the enforcing authorities and in public garages in accordance with CSA B149 codes If the heater is being installed in the state of California the installer MUST attach a warning label on the outside of the access door The California Warning label is shipped in the owner s envelope along with this manual the warranty form and any other paperwork that applies If installation is in California select a location on the heater access panel Be sure the surface 15 clean and dry and adhere the label If the heater is being installed in the Commonwealth of Massachusetts this heater must be insta
39. f the heater When removing or replacing a burner orifice use two wrenches being careful not to damage the venturi tube and or the bracket DSI Integrated Control Module circuit board See FIGURE 24 The module monitors the operation of the heater including ignition The only replaceable compo nent is the 3 amp Type ATC or ATO fuse If the fuse is blown the problem is most likely an external overload Correct the problem and replace the fuse AT FIGURE 24 DSI Integrated Control P Module Circuit Board Do not attempt to disassemble the control mod ule However each heating season check the lead wires for insulation deterioration and good connections Size 400 has one control mod ule Size 800 has two control modules and Size 1200 has three control modules Proper operation of the direct spark ignition system requires a minimum flame signal of 1 0 microamps as measured by a microampmeter For further information and check out proce dure on the direct spark ignition system refer to Paragraph 19 and the Troubleshooting Flow Chart in Paragraph 43 Only replaceable part is a Type ATC or ATO 3 amp fuse 7 Color Code 3 Violet P N 201685 Ignitor Refer to FIGURE 22 and locate the ignitor Disconnect the wire remove the screw and the ignitor Clean the ignitor assembly with an emery cloth Spark gap must be maintained to 1 8 See FIGURE 25 FIGURE 25 Ignitor showing required Spark Gap measureme
40. for leaks and proper gas line pressure Bleed gas lines of trapped air See Paragraph 12 Check electrical wiring Be sure all wire gauges as recommended Verify that fusing or circuit breakers are adequate for the load use Check polarity Verify that line voltage exists between the black L1 and earth ground If installed in California verify that California Warning Label is displayed WARNINGS For your safety read before operating If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life This appliance does not have a pilot It is equipped with an ignition device which automatically lights the burner s Do not try to light the burner s by hand Before operating smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS Open windows Don t touch electrical switches Extinguish any open flame Immediately call your gas supplier Use only your hand to turn the gas control ON OFF knob on the gas valve Never use tools If the valve ON OFF knob will not turn by hand do not try to repair it Call a qualified service technician Force or attempted repair may result in a fire or explosion Should overheating occur or the gas supply fail to shut off turn off the manual gas valve to the appliance before sh
41. g and connections including electrical grounding MUST be made in accordance with the National Electric Code ANSI NFPA No 70 latest edition or Supply and in Canada with CSA Standard C22 1 In addition the installer should be aware of any local ordinances gas company requirements that might apply Connections Check the rating plate on the heater for the supply voltage and current requirements Su pply Wiring A dedicated line voltage supply with disconnect switch should be run directly from the main electrical panel to the heater All external wiring must be within approved Form RZ NA I LDAP P N 207733 Rev 2 Page 13 14 Electrical Supply and Connections cont d Supply Wiring cont d Disconnect Switch FIGURE 9 Built in Disconnect Switch 24V Control Wiring Connections 15 Thermostat and Connections conduit and have a minimum temperature rise rating of 60 Conduit must be run so as not to interfere with the heater access panel CAUTION Route wires so that they do not contact the flue wrapper or venter housing When running electrical conduit be careful that it is clear of all access panels The heater is equipped with a built in non fusible lockable disconnect switch FIG URE 8 If a fusible disconnect is required it must be field supplied The built in disconnect switch requires copper wiring with ampacity based on 60 maximum temperature rating at the line side terminals WARNING
42. ge 10 Gas Connection Size Gas Connection inches mm Gas Gas FIGURE 7 Gas connection is at the pipe nipple that extends outside the cabinet IMPORTANT Two pipe wrenches are required when installing gas piping The gas pipe that is supplied with the heater MUST be held with a pipe wrench to prevent damage to the heater NOTE Gas Conversion Kits are available for changing from propane gas to natural gas or natural gas to propane gas factory authorized conversion kit MUST be used Valve Outlet or Orifice Pressure Setting WARNING Valve outlet gas pressure must never exceed 3 5 w c for natural gas and 10 w c for propane gas piping must be in accordance with requirements outlined in the National Fuel Gas Code ANSI Z223 1a latest edition or CSA B149 1 and B149 2 See Paragraph 2 Gas supply piping installation should conform with good practice and with local codes Support gas piping with pipe hangers metal strapping or other suitable mate rial do not rely on the heater to support the gas pipe The heater is orificed for operation with natural gas having a heating value of 1000 50 BTUH per cubic ft or propane gas with a heating value of 2500 100 BTUH per cubic ft If the gas at the installation does not meet these specifications consult the factory for proper orificing Pipe joint compounds pipe dope shall be resistant to the action of liquefied petro leum gas or any
43. he fan motor on heat speed for the selected delay off time Ignition Retry If flame is not established on the first trial for ignition period the control de energizes the gas valve and the heat section venter motor and main venter motor Form RZ NA I LDAP P N 207733 Rev 2 Page 19 20 lg n ition remain energized for an inter purge period of 10 seconds The spark and gas valve are then re energized and the control initiates another trial for ignition System If flame is not established on the second trial for ignition the control de energizes the gas CO nt d valve energizes the fan motor on heat speed and the heat section venter motor and main venter motor remain energized The fan motor is shut off after the longest selectable fan delay time 160 seconds When the fan motor de energizes the spark and gas valve are re energized and the control initiates another trial for ignition This fan delay is a self Abnormal Heat healing feature for an open auxiliary limit switch Cycle Functions If flame is not established on the third trial for ignition period the control de energizes co nt d the gas valve and the heat section venter motor and main venter motor remain energized for an inter purge period of 10 seconds The control then re energizes the gas valve and spark and initiates another trial for ignition If flame is not established on the fourth trial for ignition initial try plus 3 re tries the control de energizes the gas valve
44. he fan on delay 4 Fan On Delay The control waits for 30 seconds from the time the gas valve opened and then energizes the fan motor The gas valve heat section venter motor and main venter motor remain energized The control proceeds to steady heat mode 5 Steady Heat Control inputs are continuously monitored to ensure limit high limit heat section pressure switch and main combustion air pressure switch are closed flame Is established and the thermostat call for heat remains When the thermostat call for heat is removed the control de energizes the gas valve and begins post purge and fan off delay timing 6 Post Purge The heat section venter motor and main venter motor outputs remain on for a 45 second post purge period after the thermostat is satisfied 7 Fan Off Delay The fan motor is de energized after a fan off delay as selected by the dip switches Timing begins when the thermostat is satisfied Delay times are as in the table on the left The factory default when shipped is 120 seconds Interrupted Thermostat Call for Heat If the thermostat demand for heat is removed before the flame is recognized the control will run the heat section venter motor and main venter motor for the post purge period and de energize all outputs If the thermostat demand for heat is removed after successful ignition the control will de energize the gas valve run the heat section venter motor and main venter motor through post purge and run t
45. heel assembly See FIGURE 26 6 Follow the wiring diagram to connect the venter wires 7 Replace the access panel Restore power to the heater and turn on the gas Light following the instructions on the lighting instruction plate Check for proper opera 34 Main Venter Motor and Wheel Models 800 and 1200 only Venter Housing FIGURE 27 Venter Motor and Wheel Spacing on Main Venter Size 800 and 1200 35 Fan Motor s Fan Blades and Guard s FIGURE 28 Fan Blade Position on the Shaft 29 Camm Fan Blade Main Combustion Air Pressure Switch The main venter motor and wheel is located on the top of the first heat section of a Model LDAP 800 and 1200 The vent system attaches to the collar on the top of the main venter housing Remove dirt and grease from the motor casing the venter housing and the venter wheel Venter motor bearings are permanently lubricated Follow the instructions in Paragraph 33 for replacement of the venter motor and wheel assembly Keep all hardware removed to be used in re assembling and installing the replacement parts See FIGURE 27 for venter wheel and motor spacing 1 1 4 32mm Motor Wire and Cable Assy Main Venter Motor Screw Flat Washer Hex Nut Exhauster Motor Base ASSy Remove dirt and grease from each motor fan guard and blades Use care when cleani
46. hermostat connections at the terminal strip on the front of the heater The strip has seven terminals G C Y1 Y2 W1 and W2 Refer to the wiring diagram on the heater IMPORTANT heaters MUST be operated by a 24 volt thermostat Never use a line voltage disconnect switch as a means of operating the heater Operating by means other than a 24 volt thermostat may result in the high limit control tripping and may cause damage to the heater from excessive heat Connections for Reznor optional thermostats are shown in FIGURE 10 for LDAP 400 in FIGURE 11 for LDAP 800 and in FIGURE 12 for LDAP 1200 e Option Single Stage Thermostat 40 80 F Option CL2 Single Stage Thermostat with Fan Switch 40 80 F Option CL3 Single Stage Thermostat 40 90 F Option CL7 Two Stage Thermostat for use with optional two stage gas valve on Size 400 or for staging heat sections on Sizes 800 and 1200 Option CL18 Two Stage Thermostat with Fan Switch for use with optional two stage gas valve on Size 400 or for staging heat sections on Sizes 800 and 1200 Form RZ NA I LDAP P N 207733 Rev 2 Page 14 FIGURE 10 Thermostat Connections for Model LDAP 400 with Option CL2 CL3 CL7 or CL18 LDAP 400 THERMOSTAT WIRING 7577 FIELD WIRING NOTES 1 Set the anticipator at 0 6 amps 2 Set thermostat first stage anticipator at 0 6 amps and second stage anticipator at 0 2 amps 3 Jumper thermostat terminals RH to RC
47. in and Move It Out of the Way At the gas valve mark and disconnect the wires Disconnect the union on one or both sides of the gas line inside of the heater Carefully remove the burner orifice and orifice adapter locking nut Slide the orifice adapter out through the bracket on the burner gt Form RZ NA I LDAP 207733 Rev 2 Page 33 30 Maintenance cont d FIGURE 23 Burner Removal Size 400 has 1 burner Size 800 has 2 burners Size 1200 has 3 burners Burner Shield Burner Body Support Remove the three screws attaching the burner assembly to the burner shield Inspect and Clean the Burner NOTE If any of the burner components are damaged or deteriorated replace the burner assembly Inspect the Lower Portion of the Heat Exchanger with burner assembly removed Re Install the Burner Burner Removal Instructions cont d 6 Remove Burner Assembly a Locate the three upper burner body supports At each support remove the one screw that attaches it to the burner shield b Holding the venturi tube slide the entire burner assembly slightly upward to disengage the burner from the supports on the bottom Then rotate the open end of the venturi tube outward toward the access door opening Carefully pull the burner assembly out of the cabinet 0000000 0000000 Disconnect 5 On Size 400 or
48. inuous fan the fan will de energize A call for fan is ignored while in lockout Form RZ NA I LDAP P N 207733 Rev 2 Page 20 Fault Modes Lockout 21 Gas Valve s Size 400 has 1 valve Size 800 has 2 valves Size 1200 has 3 valves 22 Fan Motor s Size 400 has 1 fan motor Size 800 has 2 fan motors Size 1200 has 3 fan motors Undesired Flame If flame is sensed longer than 20 seconds while the gas valve is de energized the control shall energize the heat section venter motor the main venter motor and the fan motor on heat speed When flame is no longer sensed the heat section venter motor and main venter motor will run through postpurge and the fan motor will run through the selected heat fan off delay time The control will do a soft lockout but will still respond to open limit and flame The FLAME yellow LED shall flash rapidly when lockout is due to undesired flame Gas Valve Relay Fault If the control senses the gas valve as energized for more than one second when the control is not attempting to energize the gas valve or the gas valve is sensed as not energized when it is supposed to be energized then the control will lockout with the green LED off The control assumes either the contacts of the relay driving the gas valve have welded shut or the sensing circuit has failed The heat section venter motor is forced off to open the heat section pressure switch to stop gas flow unless flam
49. ion Pressure Switch Venter Motor Capacitor Fan Motor Capacitor High Limit Control and Adjustable Destrat Fan Control Disconnect Switch Transformer Gas Valve DSI Control Circuit Board Fan Permissive Relay Burner Assembly Ignitor Heat Permissive Relay Models 800 and 1200 Each section of this heater is equipped with a TCORE heat exchanger U S Patent No 6 889 686 Size 400 has one Size 800 has two and Size 1200 has three Remove any external dirt or dust accumulation Visually check each heat exchanger for cracks and holes If a crack or hole is observed replace the heat exchanger NOTE Inspection of the lower portion of the heat exchanger is done with the burner removed See the Burner Service section below for information on inspecting the lower portion of the heat exchanger Each section of this heater is equipped with a TCORE burner U S Patent No 6 889 686 Size 400 has one Size 800 has two and Size 1200 has three Inspect each burner control compartment annually to determine if cleaning is neces sary If there is an accumulation of dirt dust and or lint clean the compartment and follow the instructions below to remove and clean the burner 1 Outside the cabinet shut the gas supply off at the manual valve ahead of the union Turn off electric supply Disconnect the gas supply at the union outside of the cabinet Remove the access panel Disconnect the Gas Tra
50. ion air pressure switch Sizes 800 and 1200 and each heat section pressure switch close firing the heater 12 Burner flame is sensed and in 30 seconds after the gas valve is energized the fan motor s is energized Gas Control 2 13 If the flame is extinguished during the main burner operation integrated shown in the control system closes the main valve and must be reset by interrupting power to the control circuit See lighting instructions on the heater TO TURN OFF GAS TO THE APPLIANCE ON position 1 Set thermostat to lowest setting 2 If service is to be performed turn off all electric power to the appliance 3 Open the access door s 4 Turn the gas control knob s clockwise to OFF Do not force 5 Close the access door s Check installation O Vent System Testing Procedure 1 Seal any unused openings in the venting system after sta rtup 2 Inspect the venting system for proper size and horizontal pitch as required in the National Fuel Gas Code ANSI Z223 1 or CSA B149 1 and B149 2 Installation Code for Gas Burning Appliances and Equipment and this manual Determine that there is no blockage or restriction leakage corrosion or other deficiencies that could cause an unsafe condition 3 In so far as practical close all building doors and windows and all doors between the space where the heater is and other spaces of the building Turn on exhaust fans so they shall operate at maximum speed Do not ope
51. itch The main operating gas valve s is powered by the 24 volt control circuit through the thermostat and safety controls The gas valve is of the diaphragm type providing regulated gas flow preset at the factory For location see FIGURE 22 page 33 WARNING The operating valve is the prime safety shutoff gas supply lines must be free of dirt or scale before connecting the heater to ensure positive closure See Hazard Levels page 2 Each heat section in the heater has a fan motor Each fan motor s is equipped with thermal overload protection of the automatic reset type Should the motor s refuse to run it may be because of improper current characteristics Make certain that the cor rect voltage is available at the motor s Fan Motor Wiring White Neutral Black High Heat Speed Blue Medium Destratification Speed Factory Wired Red Low Optional Destratification Speed Field Wired Form RZ NA I LDAP P N 207733 Rev 2 Page 21 23 Wiring Diagrams Operating Sequence Notes Codes Keys etc for ALL three typical wiring diagrams FIGURES 14 15 and 16 on pages 23 24 and 25 pages 22 23 FIGURE 14 Model LDAP 400 page 23 FIGURE 15 Model LDAP 800 page 24 FIGURE 16 Model LDAP 1200 page 25 CAUTION If any of the original wire as supplied with the appliance must be replaced it must be replaced with wiring material having a temperature rating of at least 105 C except for limit contr
52. lled by a licensed plumber or licensed gas fitter Refer to the limited warranty information on the Warranty Card in the Owner s En velope Warranty is void if a Wiring is not in accordance with the diagram furnished with the heater b The heater is installed without proper clearance to combustible materials c The heater is connected to a duct system or if the air delivery system is modified by other than manufacturer designed accessories Form RZ NA I LDAP P N 207733 Rev 2 Page 2 4 Uncrating Preparation 5 High Altitude Operation Pressure Switch Instructions for Changing Heat section Pressure NOTE Do not change the main pressure switch located on top of a Size 800 and Size 1200 heater It is the same for all elevations This heater was test operated and inspected at the factory prior to crating and was in operating condition If the heater has incurred any damage in shipment document the damage with the transporting agency and contact an authorized Reznor Distribu tor If you are an authorized Distributor follow the FOB freight policy procedures as published by Thomas amp Betts for Reznor products Check the rating plate for the gas specifications and electrical characteristics of the heater to be sure that they are compatible with the gas and electric supplies at the installation site IMPORTANT The crate bottom should be removed after the heater is lifted Shipping brackets are attached wi
53. mbustion air pressure switch opening for less than 2 seconds during the trial for ignition period shall not interrupt the heat cycle Gas valve will de energize while the heat section pressure switch and main combustion air pressure switch is open If the heat section pressure switch or main combustion air pressure switch opens after a successful ignition the control will de energize the gas valve If flame is lost before the end of the 2 second pressure switch recognition delay the control will respond to the loss of flame If the heat section pressure switch and main combustion air pressure switch remains open for 2 seconds and the flame remains the control de energizes the gas valve the heat section venter motor and main venter motor runs through postpurge and the fan motor runs on heat speed through the selected fan off delay When the fan off delay is over the fan motor is de energized and a heat cycle is begun if the call for heat still exists When the thermostat calls for continuous fan without a call for heat the fan motor 15 Contin uous Fan energized after a 25 second delay NOTE This brief on delay is to allow the termi Ope ration nal to energize slightly before Y and an external changeover relay to switch from to W without causing momentary glitches in the fan motor output The fan remains energized as long as the call for fan remains without a call for heat If a call for heat W occurs during cont
54. n Where extreme conditions are anticipated install a means of condensate disposal The vent terminal pipe must be either Category III vent pipe or double wall Type B Heaters must be equipped with a Reznor vent cap a Type L Breidert Air x hauster vent cap or equivalent A different style vent cap could cause nuisance problems or unsafe conditions The vent cap must be the same diameter as the vent pipe See the clearance table below and FIGURE 18 for requirements of a horizontal vent terminal See FIGURE 19 for requirements of vertical vent termination Horizontal Vent Terminal Clearances A vent cap is required Maintain a minimum clearance of 12 inches 305mm from the wall to the vent terminal cap for stability under wind conditions Products of combustion can cause discolora tion of some building finishes and deteriora tion of masonry materials Applying a clear silicone sealant that is normally used to pro tect concrete driveways can protect masonry materials If discoloration is an esthetic prob lem relocate the vent or install a vertical vent Form RZ NA I LDAP P N 207733 Rev 2 Page 28 Structure Forced air inlet within 10 ft 3 1M Combustion air inlet of another appliance Door window or gravity air inlet any building opening Hlectric meter gas meter gas regulator and relief equipment Adjoining building or parapet Grade ground level anticipated snow depth ee aM Gas regulator USS
55. n operation See FIGURE 22 page 34 for location of the heat section pressure switch If it is determined that a pressure switch needs replacing use only the factory authorized replacement part that is designed for the model and size of heater being serviced Heat Section Size 400 has one pressure switch Size 800 has two heat sec Pressure tion pressure switches and a main combustion air pressure Switch switch and Size 1200 has three heat section pressure switches and a main combustion air pressure switch The main com bustion air pressure switch is located on the top of the first heat section see the illustration in Paragraph 34 page 36 NOTE A heater operating above 6000 ft elevation requires high altitude heat section pressure switch es See Paragraph 5 Form RZ NA I LDAP 207733 Rev 2 Page 37 38 Limit Control 39 High Limit Control 40 Transformer 41 Adjustable Fan Control 42 Vent System If it is determined that the automatic reset limit control needs re placing use only a factory authorized replacement part that is de signed for the size of heater For approximate limit location see FIGURE 22 page 34 A manual reset high limit control is located at the top of each heat section Do not reset high limit control without correcting the prob 4 lem If it is determined that the limit control needs replacing use only a factory authorized replacement part that is designed for the 9 size
56. nds of the heat section venter motor and main venter motor energizing the control will do two flashes on the green LED The control will leave the heat section venter motor and main venter motor energized indefi nitely as long as the call for heat remains and the heat section pressure switch or main combustion air pressure switch is open When the heat section pressure switch and main combustion air pressure switch are proven closed the control begins the prepurge time If flame is present any time while in prepurge the prepurge time is restarted If flame is present long enough to cause lockout the con trol responds as defined in Fault Modes Undesired Flame The control runs the heat section venter motor and main venter motor for a 20 second prepurge time then proceeds to the ignition trial period 3 Ignition Trial Period The control energizes the spark and main gas valve The venter remains energized If flame is sensed during the first 16 seconds the spark is de ener gized and the control proceeds to heat fan on delay If flame has not been sensed during the first 16 seconds the control de energizes the spark output and keeps the gas valve energized for an additional one second flame proving period If flame is not present after the flame proving period the control de energizes the gas valve and proceeds with igni tion re tries as specified in Abnormal Heat Cycle Ignition Re try If flame is present the control proceeds to t
57. ng the fan blades to prevent causing misalignment or imbalance Check that the hub of the fan blades is secure to the shaft Follow these instructions for replacement of the fan guard fan motor and or fan blades Repeat the procedure for each heater section 1 If the heater is installed turn off the gas and disconnect the electric power 2 Open the access door and disconnect the fan motor wires capacitor wires at the capacitor and ground screw 3 Remove the assembled parts the fan guard the motor and the fan blade 4 Disassemble and replace whatever parts are needed and reassemble using whatever part s are being replaced and the original parts Be sure the fan blade is in the proper position on the shaft refer to the illustration in FIGURE 28 Position the assembly on the heater Attach the fan guard Rotate the fan blade to check for adequate clearance If adjustment is required loosen the mounting screws re position the fan guard and tighten the screws Form RZ NA I LDAP P N 207733 Rev 2 Page 36 36 Operating Gas Valve s WARNING The operating valve is the prime safety shutoff gas supply lines must be free of dirt or scale before connecting to the heater to ensure positive closure See Hazard Levels page 2 NOTE Operational pressure settings and instructions for checking pressure settings are in Paragraph 12 37 Combustion Air Pressure Switch es Combustion Air Pressure Switch Model
58. nt 1 8 inch 3 2mm IMPORTANT When re assembling the brown ground wire must remain attached to the ignitor CAUTION Due to high voltage on the spark wire and electrode do not touch when energized See Hazard Levels page 2 Flame Sensor Refer to FIGURE 22 and locate the flame sensor Disconnect the wire remove the screw and the flame sensor Clean with an emery cloth Remove dirt and grease from the motor casing the venter housing and the venter wheel Venter motor bearings are permanently lubricated Follow these instructions for replacement of the venter motor and wheel assembly Keep all hardware re moved to be used in re assembling and installing the replacement parts Form RZ NA I LDAP P N 207733 Rev 2 Page 35 33 Heat Section Venter Motor and Wheel cont d FIGURE 26 Venter Wheel Position on Shaft applies to all heat section venter assemblies Replacement Instructions 1 Turn off the gas and disconnect the electric power 2 Open the burner control compartment access panel 3 Disconnect the three venter motor wires at the DSI control capacitor wires at the capacitor and ground screw located on the control panel 4 Holding the venter motor remove the six screws that attach the venter motor mounting plate to the venter housing Remove the motor and wheel assembly from the heater i 7 16 11mm inside 5 Re assemble with the replacement venter motor and w
59. of additional louvers that are installed perpendicular to the standard individually adjustable louvers By installing the optional perpendicular lou vers the two sets of louvers can be adjusted to direct airflow in any of the four directions enabling the installer to select and increase or decrease the coverage area Option CD57 is a 30 discharge nozzle Option CD58 is 60 discharge nozzle Option CD59 is a 30 discharge nozzle with 4 way louvers A nozzle may be installed at each discharge air opening in any direction NOTE Do not install 4 way louvers with a 60 nozzle Nozzles should be attached after the unit is suspended Follow the installation instruc tions in the nozzle package FIGURE 21B Nozzle Dimensions Option CD57 jo 30 Nozzle 14 1 8 360mm Option CD58 60 Nozzle 16 1 2 419mm 24 3 8 618mm Option CD59 30 Nozzle with 4 Way Louvers The material contained in the MAINTENANCE AND SERVICE Section of this manual is designed to aid a qualified service person in maintaining and servicing this equipment This heater will operate with a minimum of maintenance To ensure long life and satisfactory performance a heater that is operated under normal conditions should be inspected and cleaned at the start of each heating season If the heater is operating in an area where an unusual amount of dust or soot or other impurities are present in the air more frequent maintenance i
60. of heater See FIGURE 22 page 34 for location Use a voltmeter to verify that there are 24 volts output from the transformer If the trans former is not functioning it must be replaced Use a replacement transformer identical to the factory installed model E See FIGURE 22 page 34 for location Check the wiring connec X tions and the adjustment knob If it is determined that destratification fan control needs placing use only a factory authorized replacement part that is de signed for the heater Check the complete vent system at least once a year Inspection should include all joints seams and the vent terminal cap Clean openings Replace any defective parts 43 Troubleshooting Check the Lights on the DSI Integrated Control Module Circuit Board IMPORTANT When using a multimeter to troubleshoot the 24 volt circuit place the meter s test leads into the 5 or 9 pin connectors located on the ignition control Do not remove connectors or terminals from the electrical components Doing so can result in misinter preted readings due to the ignition control board s fault mode monitoring circuits The integrated circuit board monitors the operation of the heater and includes two LED signal lights that indicate normal operation and various abnormal conditions If the heater fails to operate properly check this signal to determine the cause and or to eliminate certain causes See operating
61. ol high limit control and sensor lead wires which must be 150 C See Hazard Levels page 2 Operating Sequence Notes Codes Keys etc for ALL three typical wiring diagrams FIGURES 14 15 and 16 on pages 23 25 Operating Sequence Wiring Diagram NOTES 1 gt Set thermostat at lowest setting With Opt CL2 or CL18 set fan switch at AUTO position Turn on the manual gas valve s Turn on power to the heater Set thermostat at desired setting Thermostat calls for heat energizing the venter motor s Main combustion air pressure switch Sizes 800 and 1200 and heat section pressure switch es close firing heat section s Unit fires at low fire when using two stage thermostat Burner flame is sensed and in 30 seconds the fan motor s is energized High stage of thermostat calls for heat firing all heat sections at full rate on heaters with a two stage thermostat With Opt CL2 or CL18 set fan switch at ON position for continuous fan operation 10 If the flame is extinguished during main burner operation the integrated N control system closes the main valve of that heat section and must be reset by interrupting power to the control circuit see lighting instructions The following controls are field installed options Thermostat Dotted wiring installed by others CAUTION If any of the original wiring as supplied with the appliance must be replaced it mus
62. other chemical constituents of the gas being supplied Install a ground joint union and manual shutoff valve upstream of the heater control system as shown in FIGURE 7 Installation of a trap with a minimum 3 76mm drip leg is required To connect the gas the heater is equipped with a nipple that extends outside the cabinet Leak test all connections by brushing on a leak detecting solution Ground To Gas Valve Joint Union Manual shutoff inside the cabinet Horizontal Supply 9 From Gas Supply Drip Leg horizontal or vertical Y Vertical Suppl Pipe nipple extending outside the cabinet LS Manual shutoff To Gas Valve inside the cabinet Measuring valve outlet gas pressure cannot be done until the heater is in operation It is included in the steps of the Check Test Start procedure in Paragraph 25 The following warnings and instructions apply Model LDAP 400 has one gas valve Model LDAP 800 has two gas valves and Model LDAP 1200 has three gas valves For Natural Gas When the heater leaves the factory the combination gas valve s is set so that the valve outlet gas pressure for a single stage valve or high fire of a two stage valve is regulated to 3 5 w c Low fire on a two stage valve Size 400 only is set to 1 8 w c Inlet supply pressure to the heater for natural gas must be a minimum of 5 w c or as noted on the rating plate and a maximum of 14 w c For Propane Gas
63. ould be taken into consider ation when locating the heater so that a minimum quantity of airflow will be deflected by such obstacles requirements may affect location Consult requirements in Paragraph 24 before making final determination Hazards of Chlorine The presence of chlorine vapors in the combustion air of gas fired heating equipment presents a potential corrosion hazard Chlorine found usually in the form of freon or degreaser vapors when exposed to flame will precipitate from the compound and go into solution with any condensation that is present in the heat exchanger or associated parts The result is hydrochloric acid which readily attacks all metals including 300 grade stainless steel Care should be taken to separate those vapors from the combus tion process This may be done by wise location of the heater with regard to exhaust ers or prevailing wind directions Chlorine is heavier than air Keep these facts in mind when determining installation location of the heater in relation to building ex haust systems 11 Hanging or Weight Ibs kg Mou nting Size 400 800 1200 Before installing the heater check the supporting h H structure to be used to verify that it has sufficient load t e eater carrying capacity to support the weight and Suspending the Heater Installing Locate the hardware kit shipped with the heater The kit contains spring nuts hex Lo uvers nuts U shape fittings and lock washers for s
64. r U shape TAS Fitting T Spring JIES Nut Strut attached to top of heater Be sure the threaded hanger rods are locked to the heater as illustrated Recommended maximum hanger rod length is 6 feet 1 8M Hex Nut 73 172 _ cae Lockwasher Spring Strut attached to top of heater Be sure the threaded swivel connectors locked to the heater as illustrated Wall Mountin g The heater may be attached to a wall Place supports as shown in FIGURE 5 and comply with all guidelines listed Guidelines for Wall Mounting FIGURE 5 Wall Mounting Model LDAP Heaters All structural supports and angles are field supplied Ei Mounting is the responsibility of the dimensions are measured from centerlines of field supplied structural supports installer Verify that the supporting structure has sufficient load carrying Field Supplied Mounting Angles capacity to support the weight See weights page 8 Prior to installation be sure that the all local building codes Check for Model LDAP 800 2 heat sections method of support is in agreement with Front View Front View MUST be on all four sides of the heater lt 34 11 32 service platform requirements E 34 33164 Maintain a minimum of 2 51mm 877mm clearance from the discharge air openings to structural supports Addi tional clearance will be required if an 34 33 64
65. r vertical Horizontal Vent pipe approved for a Category III appliance OR Appropriately sealed 26 gauge or heavier galvanized steel or equivalent single wall pipe Vertical Vent pipe approved for a Category III appliance OR Appropriately sealed 26 gauge or heavier galvanized steel or equivalent single wall pipe OR if at least 75 of the equivalent length of the vent run is vertical Double wall Type B vent pipe 2 Vent Pi pe Diameter Vent pipe diameters and maximum vent lengths in the table apply to both Horizontal and Length and Vertical vents Add all straight sections and equivalent lengths for elbows The total combined length must not exceed the Maximum Vent Length Use only one diameter of vent pipe on an installation Minimum vent length is 3 feet 1M Minimum of 1 ft 0 3M of vertical vent required on venter outlet before installing an elbow Egi valent Equivalent Onde Vent Length strai eld Supplied Taper Type Di t i Connection Required at the Venter _ Diameter 7 for 90 Hbow for 45 Hbow du ef tus 152 _6_ 152 45 137 5 46 75 23 None _____ s 24 4 12 eT mmea 15 75 08 8710107 00310 254mm Inceaser 7 08 810 10 00310 254mm Incrcaser Form RZ NA I LDAP P N 207733 Rev 2 Page 26 3 Venter Flue Venter Outlet Attachment Requirements Outlet Model Venter Outlet Depending on the si
66. rate a summer exhaust fan 4 Light the heater following the lighting instructions Adjust the thermostat for continued operation Verify that combustion products are venting properly Place the Owner s Envelope After determining that the heater vents properly return doors windows and containing the Limited exhaust fans to their previous conditions If improper venting is observed the Warranty this booklet and venting system must be corrected any control or optional With the heater in operation measure valve outlet gas pressure If operated at information in an accessible high altitude adjust outlet gas pressure for altitude See information and instruc location near the heater tions in Paragraph 12 Follow the instructions on the Using the thermostat turn the heater off and on pausing two minutes between envelope each cycle Observe for smooth ignition DANGER The gas burner in this gas fired equipment is designed and equipped to provide safe controlled complete combustion However if the installation does not permit the burner to receive the proper supply of combustion air complete combustion may not occur The result is incomplete combustion which produces carbon monoxide a poisonous gas that can cause death Safe operation of indirect fired gas burning equipment requires a properly operating vent system that vents all flue products to the outside atmosphere FAILURE TO PROVIDE PROPER VENTING WILL RESULT IN A HEALTH HAZARD
67. rature is not exceeded 8 Clearances Clearances inches mm Bottom aestae P Se Size Connector Access Panel inches 400 cea ere E REI EUR soo 12 305 6 1524 457 2 sos 47 2 sos 1524 1200 12 365 e 1524 18 457 2 sos 457 2 sos 152 9 Combustion Air FIGURE 2 Definition of Confined Space and Required Openings for Combustion Air Confined Space A space whose volume is less than 50 cubic feet per 1000 BTUH of the installed appliance input rating Confined This heater must be supplied with the air that enters into the combustion process and is then vented to the outdoors Sufficient air must enter the equipment location to replace that exhausted through the heater vent system In the past the infiltration of outside air assumed in heat loss calculations one air change per hour was assumed to be sufficient However current construction methods using more insulation vapor barriers tighter fitting and gasketed doors and windows weather stripping and or mechanical exhaust fans may now require the introduction of outside air through wall openings or ducts The requirements for combustion and ventilation air depend upon whether the heater is located in a confined or unconfined space An unconfined space is defined as a space whose volume is not less than 50 cubic feet per 1000 BTUH of the installed appliance Under AL
68. ressure check on second and third valve Derate by Valve Outlet Pressure Adjustment for High Altitude Operation Instructions for High Altitude Derate 1 Determine the required valve outlet pressure for the elevation where the heater will be operating If unsure of the elevation contact the local gas supplier Valve Outlet Pressure Settings by Elevation Manifold Pressure Settings by Altitude for the UNITED STATES Two Stage High Low Fire Two Stage High Fire Low Fire 0 2000 5 6 2001 3000 3001 4000 Manifold Pressure Settings by Altitude for CANADA Natural Gas inches w c Propane Gas inches w c Feet Single Stage and Two Stage Single Stage ane Two Stage Two Stage High Fire Low Fire Two Stage High Fire Low Fire 0 610 2001 4500 611 1373 2 Locate the 1 8 output pressure tap on the first valve See FIGURE 8 Turn the knob on the top of the valve to OFF Connect a manometer to the 1 8 pipe outlet pressure tap in the valve Use a water column manometer that is readable to the nearest tenth of an inch 3 Single Stage and Two Stage High Fire Turn the knob on the top of the valve to ON Remove the cap from the pressure adjusting screw and adjust the gas train pressure to the pressure selected from the table above Adjust pressure by turning the regulator screw IN clockwise to increase pressure or OUT counterclockwise to decrease pressure Two Stage Low Fire Disconnect the wire from the
69. roperty damage or death After the unit is suspended mounted install the air directional louvers or optional nozzle If an optional nozzle is being installed follow the instructions included with the nozzle If a nozzle is not being used install the louvers in the discharge opening s Louvers and springs are in the hardware kit shipped with the heater Before actually installing the louvers note the louver curve and determine how the louvers should be positioned to provide the optimal throw pattern Opening is square so louvers may be installed either horizontal or vertical Louvers may be installed with the curve all the same direction either way or the right half one way and left the other as illustrated in FIGURE 6 Louver Installation Instructions 1 With the wider section of the louver facing out of the heater place one of the compres sion springs over the tab on the notched end of a louver The end of the louver with the spring will fit in any direction in the square opening How the louver turns depends on which end of the louver is inserted first 2 Depending on the throw pattern selected push the louver tab with the spring into a hole in the discharge opening and insert the louver tab on the other end into the corresponding hole on the opposite side 3 Continue until all louvers are installed Adjust the louvers to provide the desired throw pattern Airflow direction depends on how the louvers are installed
70. s 800 and 1200 Rotate the fan blade and re check for adequate clearance Repeat this procedure until the assembly is positioned properly 5 Reconnect the fan motor wires according to the wiring diagram and close the access panel 6 When finished with all sections restore power to the heater and turn on the gas Light following the instructions on the lighting instruction plate Check for proper operation Carefully remove external dirt accumulation and check the wiring connections Size 400 has one valve Size 800 has two valves Size 1200 has three valves The combination gas valve must be checked annually to ensure that the valve is shutting off gas flow completely Instructions 1 Locate the 1 8 NPT pressure tap on the combination valve FIGURE 29 Pressure Tap for Checking Gas Flow Shutoff Two Stage Valve optional Single Stage Valve on Model LDAP 400 only 1 8 Outlet Pressure Tap 1 8 Outlet Pressure Tap 2 With the manual valve turned off to prevent flow to the gas valve connect a ma nometer to the 1 8 outlet pressure tap in the valve NOTE A manometer fluid filled gauge is recommended 3 Turn the manual valve to the ON position and the heater OFF Use your finger to fully block the main burner orifice for several seconds Observe the manometer with the orifice blocked and if any pressure is indicated the gas valve is leaking leaking gas valve must be replaced before the heater is placed back i
71. s recommended When any service is completed be careful to reassemble correctly to ensure that no unsafe conditions are created When re lighting always follow the lighting instructions on the heater Maintenance Schedule The following procedures should be carried out at least annually Refer to illustrations and follow the instructions in Paragraphs 29 42 Clean all dirt lint and grease from all combustion air openings and the venter assemblies Clean all dirt lint and grease from all fan blades fan guards and motors Check all heat exchangers both internally and externally Check all burners for scale dust or lint accumulation Clean if needed Check gas valve s to ensure that gas flow is being shutoff completely Check the vent system for soundness Clean openings Replace any parts that do not appear sound Form RZ NA I LDAP P N 207733 Rev 2 Page 32 FIGURE 22 Location of Controls Venter Motor 24V Thermostat Terminal Board Destrat Relay Remote Destrat Relay Vent Permissive Relay Models 800 and 1200 Limit Control Terminal Boards Flame Sensor 29 Heat Exchanger Maintenance 30 Burner Maintenance Burner Removal Instructions Refer to FIGURE 23 CAUTION Use of eye protection is recommended Check the wiring for any damaged wire Replace damaged wiring See Paragraph 14 for replacement wiring requirements Heat Sect
72. sequence in Paragraph 19 Do not attempt to repair the DSI integrated control module the only field replaceable component is the fuse Control Status GREEN LED Codes Flame Status YELLOW LED Codes Normal Operation No call for heat Steady On 1 0 microamps 50 Fast Flash Undesired flame valve sustain flame open and no call for heat S 2 Flash Main combustion air pressure switch or heat section pressure switch does not close with 30 seconds of venter being energized 3 Limit or high limit switch open 4 Flash Main combustion air pressure switch or heat section pressure switch is closed before venter is energized Steady Off Blown fuse No power or Defective board Form RZ NA I LDAP P N 207733 Rev 2 Page 38 DSI Integrated Control Module Circuit Board Trial Troubleshooting Flowchart Trial for Ignition Call for Heat Is there spark voltage at control Is there a spark across gap at ignitor NO Check high voltage wire continuity 5 Replace control module Is there 24V 1 2 to power control Check wiring and or 24VAC transformer output NO Does gas ignite YE 5 Replace control module Check connections to Check gas pressure and flame sensor or supply voltage If either moisture in bulkhead are low correct and connector repeat startup YE S Replace flame sesnsor Is there
73. service technician to inspect the appliance and replace any gas control that has been under water Form RZ NA I LDAP P N 207733 Rev 2 Page 1 Hazard Levels of Warnings in this Manual 1 General 2 Installation Codes Special Installations Aircraft Hangars Repair Garages Parking Garages California Warning Label Massachusetts Requirement 3 Warranty HAZARD INTENSITY LEVELS 1 DANGER Failure to comply will result in severe personal injury or death and or property damage 2 WARNING Failure to comply could result in severe personal injury or death and or property damage 3 CAUTION Failure to comply could result in minor personal injury and or property damage Model LDAP high bay packaged heaters are design certified by ITS for use in industrial and commercial installations All models and sizes are available for use with either natural or propane gas The type of gas the input rate and the electrical supply requirement are shown on the heater rating plate Check the rating plate to determine if the heater is appropriate for the intended installation The instructions in this manual apply only to Reznor Model LDAP heaters Installation should be done by a qualified agency in accordance with these instruc tions The qualified service agency installing this heater is responsible for the instal lation These heaters must be installed in accordance with local building codes In the ab sence o
74. ss the middle heat section A fae 68 10331 HANGER LOCATION 1 2 13 FEMALE THREAD AIR DESTRATIFICATION 22mm FAN CONTROL 28 18 43 1 2 714mm 1 105 46 1 168mm TOP VIEW B 349mm x _ 5 tyt LINE VOLTAGE e UN 53 ON DISCONNECT 1 346mm jS C 1 1 4 NPT GAS CONNECTION RIGHT SIDE VIEW CONNECTIONS 5 5 8 143mm 3 1 4 23 83mm gt X 11 3 4 298mm 11 3 4 298mm 21212 21 E Tg 21212 RMN ULL ee 1 M NISL ISI I IE 114 AGE MEBMNN Ll See E 10 WS I A I 15111 114 UU 121 14174 NOTE If optional nozzles are added to the discharge openings see dimensions on page 32 IHR del A ULL 171 1114 DISCHARGE OPENING BOTTOM VIEW Form RZ NA I LDAP P N 207733 Rev 2 Page 5 Heaters must be installed so that the clearances in the table are provided for combus tion air space inspection and service and for proper spacing from combustible con struction Clearance to combustibles is defined as the minimum distance from the heater to a surface or object that is necessary to ensure that a surface temperature of 90 F above the surrounding ambient tempe
75. t be replaced with wiring material having a temperature rating of at least 105 C except for sensor lead wire and limit wiring which must be 150 C Use 18 gauge wire for all wiring on the heater Line and fan motor branch wire sizes should be of a size to prevent voltage drops beyond 5 of supply line voltage Size 400 see thermostat wiring diagram in FIGURE 10 page 15 Size 800 see thermostat wiring diagram in FIGURE 11 page 15 Size 1200 see thermostat wiring diagram in FIGURE 12 page 16 The control transformer has a dual voltage primary For 230V heaters the black lead goes to the 240 terminal Cap the 208 terminal For 208V heaters the black lead goes to the 208 terminal Cap the 240 terminal When providing or replacing fuses in the fusible disconnect switch use dual elements time delay fuses and size according to 1 25 times the maximum total input amps The line side of the lockable disconnect switch must be connected to the incom ing power supply such that the voltage between Terminal L1 and Ground is the greater value Form RZ NA I LDAP P N 207733 Rev 2 Page 22 Black Switch Chart for Fan Fan Motor Wirin Brown BR OFF Delay See SW1 on W D Wiring Red R mME swi sw2 White Neutral Orange O Black High Heat Speed Yellow Y 120 Blue Medium Destratification Speed Factory Wired 160 sec eld Wi Green
76. th cabinet screws When removing shipping brackets re insert ALL screws into the cabinet Read this booklet and become familiar with the installation requirements of your particular heater If you do not have knowledge of local requirements check with the local gas company or any other local agencies who might have requirements con cerning this installation If the installation is above 2000 ft 610M elevation follow the instructions in Paragraph 5 and Paragraph 12 Before beginning make preparations for necessary supplies tools and manpower Locate the hardware kit supplied with the heater The plastic bag contains spring nuts hex nuts U shape fittings lock washers louvers and compression springs Be sure that all shipped separate options that were ordered are at the installation site Shipped separate items could include a vent cap louvers nozzles hanger kit a manual shutoff valve a thermostat multiple heater controls high temperature tape and or a high altitude kit If the heater is being installed at an elevation above 2000 ft 610M the input rate will have to be derated This is done by adjusting the outlet pressure of the gas valve and can only be done after the heater is in operation Follow the instructions in Para graph 12 If the heater is being installed at an elevation above 6000 ft 1830M the heat section pressure switch es will need to be changed If ordered with the heater as Option DJ20 the pressur
77. the most downstream heat section in a Size 800 or 1200 there will be one union to disconnect The first heat section in Sizes 800 and 1200 and the second heat section in Size 1200 will have two unions to disconnect Gas Valve Mark and disconnect the wires Remove orifice adapter locking nut Remove the burner orifice and slide out through the bracket Burner Assembly remove burner assembly lift and rotate outward Venturi Tube part of the burner assembly With the burner assembly removed shine a flashlight on the burner ribbons Look for carbon buildup scale dust lint and or anything that might restrict flow through the spaces between the burner ribbons Holding the burner assembly so that any foreign material will fall away from the burner use a stiff bristle brush to loosen and remove any foreign material s If the burner is excessively dirty remove one of the burner end caps Remove the four screws that hold the end cap to the burner housing Lightly tap the end cap to remove it Clean all foreign material from the burner and venturi After the burner is thoroughly clean replace the end cap making certain that it is tight against the burner housing At the burner flame entrance of each tube shine a bright light into each heat ex changer section With the light shining into the heat exchanger observe the outside for visible light Repeat this procedure with each heat exchanger se
78. ure switch will function to shutoff the burner If the main combustion air pressure switch opens it will interrupt the electric supply to all gas valves If a heat section pressure switch opens it will interrupt the electric supply to the gas valve in that heat section The burner s will remain off until the system has cooled and or the flue system resistance is reduced The Table below lists the approximate water column differential pressure settings of the heat section pressure switch es and the negative pressure readings of the main Pressure Switch Settings pressure switch Sea Level Pressure Switch Settings Applies to elevations up to 6000ft 1830M Main Pressure Switch Heat Section Pressure Switch es Color Part No Color Part No Negative Pressure in w c Differential Pressure in w c 500 1 18010 1 50 1 05 to 0 85 065 083 Yelow 197028 1 30to 1 00 0 85 to 065 015 033 Gray 205445 2 1 900 1 60 1100 0 90 065 083 197028 00 1 40 to 0 90 0 97 to 0 59 0 15 033 Gray 205445 3 24010 190 15510 1 00 0 65 083 Yellow 197028 High Altitude Pressure Switch Settings Units Above 6000ft 1830M Main Pressure Switch Heat Section Pressure Switch es Start up Cold Equilibrium Setpoint Setpoint Label Switch Qty Start up Equilibrium Setpoint Setpoint Label Switch Hot OFF ON Cold Hot OFF ON Color Part No Color Part No Negative Pressure in w c
79. uspending the heater It also includes louvers and the compression springs needed to install them When the heater is lifted for suspension support the bottom of the heater with the crate bottom If the bottom is not supported damage could occur Before hanging or mounting verify that any screws used for holding shipping brackets were re installed in the cabinet WARNINGS Check the supporting structure to be used to verify that it has sufficient load carrying capacity to support the weight of the heater Suspend the heater only from the threaded nut retainers or with a manufacturer provided kit Do NOT suspend from the heater cabinet See FIGURE 1A or 1B for the appropriate hanging locations and install the V2 13 spring nuts in the strut that is attached to the top of the unit Comply with the require ments in FIGURE 4 when using threaded rod If ordered with swivel connectors for 1 pipe Option CK10 attach the swivels to the spring nuts according to illustra tion in FIGURE 4B and suspend with 1 pipe Form RZ NA I LDAP P N 207733 Rev 2 Page 8 WARNING heaters must be level for proper operation Do not place or add additional weight to the suspended heater Hazard Levels page 2 FIGURE 4A Suspending the E 1 2 13 Heater with Rods Threaded Rod m from the Threaded Nut Retainers Hex Nut FIGURE 4B Swivel Connectors to Suspend the Heater from 1 Pipe Option Pipe Coupling Assembly Lockwashe
80. utting off the electrical supply Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water 1 Set thermostat at lowest setting Turn off all electric power to the appliance This appliance is equipped with an ignition device which automatically lights the burner Do not try to light the burner by hand Open the access door s and locate the gas control ON OFF knob on the gas valve s See FIGURE 20 4 Turn each gas control knob s clockwise to OFF 5 Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP and follow the steps in the WARNINGS printed above or on the Operating Label on the heater If you do not smell gas proceed to the next step Turn the gas control knob s counterclockwise to ON Close the access door s Turn on the electric power to the heater 9 Set the thermostat to the desired setting N oo Form RZ NA I LDAP 207733 Rev 2 Page 30 FIGURE 20 Gas Valve NOTE If the appliance does not operate follow the instructions To Turn Off Gas ON OFF Control Knob to Appliance printed below and on the Operating Label on the heater and call your service technician n 10 Thermostat calls for heat energizing the venter motor s 11 The main combust
81. y Co ntrol set and is non adjustable If the setpoint is reached the high limit control acts to interrupt the electric supply to the gas valve in that heat section If the high limit control activates identify and correct the cause before resetting the switch Refer to Form RZ NA I LDAP P N 207733 Rev 2 Page 17 imi the Maintenance Section for information on probable causes For location see FIG 18 High Limit DANGER If a manual reset high limit control activates identify co nt d and correct the cause before resetting the switch Never bypass the high limit control hazardous conditions could result See Hazard Intensity Levels page 2 1 9 stabl e An adjustable fan control is located on top of the first heat section It is adjacent to the circulating air fan and motor and controls the fan motors in all heat sections The Ai r Destrati purpose of the fan control is to energize the fan motor s when the ambient air tem perature around the heater reaches the setting on control The fan motor s will be fication Fan de energized when the fan control is satisfied The fan s re circulates the heated air Co ntrol near the ceiling down to the floor level destratification and improves heat recovery A call for heat by the thermostat overrides the air destratification fan control Set the adjustable fan control for the desired temperature setting for energizing the circulating air fan s
82. ype B Terminal Pipe to a Single Wall or Category III Vent Pipe Run 5 Vent System Support 6 Condensation 7 Vent Terminal Pipe and Vent Cap Figure 17C STEP 1 On the single wall pipe or Category III pipe place a continual 1 4 inch bead of silicone sealant around the circumference Figure 17C STEP 2 Insert the pipe with the sealant into the inner pipe of the double wall pipe until the bead of sealant contacts the inner pipe creating a sealed joint Do STEP 2 immediately after STEP 1 Double Wall Pipe Single Wall or Category III Vent Pipe Figure 17C STEP Spaced equally around the double wall pipe drill three small holes below the sealant ring Insert 3 4 inch long sheetmetal screws to secure the joint Do not over tighten screws Support horizontal vent runs every six feet 1 8M Support vertical runs of Type double wall or Category III vent pipe in accordance with the requirements of the pipe manufacturer Support single wall pipe in accordance with accepted indus try practices Do not rely on the heater for support of either horizontal or vertical vent pipe Use non combustible supports on vent pipe Any length of single wall vent pipe exposed to cold air or run through an unheated area or an area with an ambient temperature of 45 F or less must be insulated along its entire length with a minimum of 1 2 foil faced fiberglass 1 1 2 density insu latio
83. ze of vent pipe ZI as determined in Step No 2 attach Size inches mm either the vent pipe directly to the venter collar or a taper type enlarger Taper type Pipe Diameter Increaser 4 Joints and Sealing Provide field supplied vent pipe as specified in Requirement No 1 fusing single wall 26 gauge or heavier galvanized pipe secure slip fit connec tions using sheetmetal screws or rivets Seal pipe joints either with tape suitable for 550 F such as Option FA1 P N 98266 or high temperature silicone sealant fusing Category III vent pipe follow pipe manufacturer s instructions for join ing pipe sections When attaching Category III pipe to the venter outlet or the vent cap make secure sealed joints following a procedure that best suits the style of Category III pipe being used Ifinstalling a double wall Type B terminal pipe follow the instructions in FIG URE 17C to join the double wall pipe to a single wall or Category III vent pipe run To attach the vent cap follow instructions in FIGURE 17B fusing double wall Type B vent pipe in the vent pipe run at least 75 of the equivalent vent length must be vertical follow the pipe manufacturer s instruc tions for joining pipe sections For attaching double wall pipe to the heater see FIGURE 174A To attach the vent cap see FIGURE 17B Figure 17A STEP 1 Figure 17A STEP 2 Attaching Double Slide the To secure the connection wall V

Thomas & Betts LDAP 1200 User's Manual

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Thomas &amp; Betts LDAP 1200 User's Manual

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Thomas & Betts LDAP 1200 User's Manual