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Manual Thomas & Betts LDAP 1200

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  • Thomas & Betts LDAP 1200 - page 1

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 1 APPLIES TO: Model LDAP Installation/Operation FORM RZ-NA I-LDAP CQS C O N V E R G E N T Q U A L I T Y S Y S T E M P R O D U C T A G E N C Y C U S T O M E R S T A R T - U P W A R R A N T Y P R O C E S S Index (by page) Burners ....................................... 13, 33 Burner Orifice ................ ...

  • Thomas & Betts LDAP 1200 - page 2

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 2 Hazard Levels of W arnings in this Manual HAZARD INTENSITY LEVELS 1. DANGER: Failure to comply will r esult in severe personal injury or death and/or pr operty damage. 2. W ARNING: Failure to comply could r esult in severe personal injury or death and/or pr operty damage. 3. CAUTION: Failure to comply c ...

  • Thomas & Betts LDAP 1200 - page 3

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 3 4. Uncrating and Preparation 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 auth ...

  • Thomas & Betts LDAP 1200 - page 4

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 4 6. T echnical Dat a Model LDAP 1200 One Heater with T wo Downflow Heat Sections Model LDAP 400 One Downflow Heater Model LDAP 800 One Heater with Three Downflow Heat Sections 7. Dimensions FIGURE 1A - Model LDAP 400 17-1/8 (435mm) 30 (762mm) 2-1/8 (54mm) 7/8 (22mm) 9-1/8 (232mm) 15-1/4 ...

  • Thomas & Betts LDAP 1200 - page 5

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 5 FIGURE 1B - Model LDAP800 and 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 less the middle heat section. DISCHARGE OPENING BOTT OM VIEW 23 (584mm) 3-1/4 (83mm) 5-5/8 (143mm) 1 1- ...

  • Thomas & Betts LDAP 1200 - page 6

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 6 Confined Space: A space whose volume is less than 50 cubic feet per 1000 BTUH of the installed appliance input rating Combustion Air Requirement s for a Heater Located in a Confined Space FIGURE 2 - Definition of Confined Space and Required Openings for Combustion Air (3) (3) (1) (1) (2) (2) Confined Sp ...

  • Thomas & Betts LDAP 1200 - page 7

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 7 10. Heater Location Use the clearances in Paragraph 8; the combustion air requirements in Paragraph 9; the mounting height requirements, throw information, sound data, and location rec- ommendations below; the weights in Paragraph 1 1; and the venting requirements in Paragraph 24 to determine where to s ...

  • Thomas & Betts LDAP 1200 - page 8

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 8 11. Hanging or Mounting the Heater and Installing Louvers Before installing the heater , check the supporting structure to be used to verify that it has sufficient load- carrying capacity to support the weight. Weight (lbs/kg) W ARNINGS: Check the supporting structur e to be used to verify that it has s ...

  • Thomas & Betts LDAP 1200 - page 9

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 9 FIGURE 4B- Swivel Connectors to Suspend the Heater fr om 1” Pipe, Option CK10 Be sure the threaded swivel connectors are locked to the heater as illustrated. W ARNING: All heaters must be level for proper operation. Do not place or add additional weight to the suspended heater . Hazard Levels, page 2. ...

  • Thomas & Betts LDAP 1200 - page 10

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 10 Inst alling Louvers NOTE: Do not install louvers if installing a nozzle. Follow the instructions shipped with the nozzle. Louver Installation Instructions: 1) W ith 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 louv ...

  • Thomas & Betts LDAP 1200 - page 11

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 11 V alve Outlet or Orifice Pressure Setting Measuring valve outlet gas pressure cannot be done until the heater is in operation. It is included in the steps of the "Check-T est-S tart" procedure in Paragraph 25. The following warnings and instructions apply . Model LDAP 400 has one gas valve; M ...

  • Thomas & Betts LDAP 1200 - page 12

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 12 12. Gas Pressures (cont’d) Derate by V alve 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 . C ...

  • Thomas & Betts LDAP 1200 - page 13

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 13 All electrical wiring and connections, including electrical grounding MUST be made in accordance with the National Electric Code ANSI/NFP A No. 70 (latest edition) or , in Canada, with CSA Standard C22.1. In addition, the installer should be aware of any local ordinances or gas company requirements tha ...

  • Thomas & Betts LDAP 1200 - page 14

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 14 15. Thermost at and Connections 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 t ...

  • Thomas & Betts LDAP 1200 - page 15

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 15 W (OPT CL1) W.R. 1C30-341 THERMOST AT R R (OPT CL2) W.R. 1C30-341 W-S23-6 SUBBASE W G Y2 R W1 G Q674G SUBBASE (OPT CL7) T874F THERMOST AT W2 R W1 Q674C SUBBASE (OPT CL18) T874F THERMOST AT RH W2 RC W1 G W2 W1 R G (OPT CL3) T874F THERMOST AT OR Y1 C W2 Y2 Y1 C SINGLE ST AGE HEA TING TWO ST AGE HEA TING ...

  • Thomas & Betts LDAP 1200 - page 16

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 16 Multiple Heater Control - Option CL31 and Option CL32 If the heater was ordered with a multiple heater control option, one thermostat can be used to control multiple heaters. The option will control a maximum of six Size 400 heaters, a maximum of three Size 800 heaters, or a maximum of two Size 1200 he ...

  • Thomas & Betts LDAP 1200 - page 17

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 17 18. High Limit Control Each heat section is equipped with a temperature activated, manually reset high limit control. The high limit control is located at the top of each heat section. It is factory set and is non-adjustable. If the setpoint is reached, the high limit control acts to interrupt the elec ...

  • Thomas & Betts LDAP 1200 - page 18

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 18 Each heat section in this heater is equipped with a direct spark integrated control 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. 20. Ignition System FIGURE 13 – DSI Integrated Control Modu ...

  • Thomas & Betts LDAP 1200 - page 19

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 19 Abnormal Heat Cycle Functions Normal Heat Cycle Operating Sequence 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 pr ...

  • Thomas & Betts LDAP 1200 - page 20

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 20 Continuous Fan Operation 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. If flame is not established on the second trial for ignition, the control de-energizes the gas valve, energizes the fa ...

  • Thomas & Betts LDAP 1200 - page 21

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 21 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.) W ARNING: The operating valve is the prime safety sh ...

  • Thomas & Betts LDAP 1200 - page 22

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 22 Operating Sequence Wiring Diagram NOTES 1. Set thermostat at lowest setting. W ith Opt CL2 or CL18, set fan switch at “AUTO” position. 2. T urn on the manual gas valve(s). 3. T urn on power to the heater . 4. Set thermostat at desired setting. 5. Thermostat calls for heat, energizing the venter mot ...

  • Thomas & Betts LDAP 1200 - page 23

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 23 FIGURE 14 – T ypical Wiring Diagram for Model LDAP 400 (Reference W . D. 189374, Rev 2) T erminal Block - Heat Section #1 T erminal Block - Heat Section #2 T erminal Block - Heat Section #3 Factory Wiring Field Wiring To t al W i r e Le n g th Di s t a n c e fro m Un it to C ontr ol Mi ni m um R ec o ...

  • Thomas & Betts LDAP 1200 - page 24

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 24 23. Wiring Diagrams (cont’d) FIGURE 15 – T ypical W iring Diagram for Model LDAP 800 (Refer ence W .D. 189375, Rev 2) 208 OR 230/1/60 VENTER MOTOR & CAP ACITOR BK L1 #1 VENT PERMISSIVE RELA Y CONT ACTS 2 4 A BK Y L3 MAIN PR L1 A BK PR RELA Y CONT ACTS #2 VENT PERMISSIVE 2 4 PR BK PR BK GRD G N ...

  • Thomas & Betts LDAP 1200 - page 25

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 25 FIGURE 16 – T ypical Wiring Diagram for Model LDAP 1200 (Reference W . D. 189376, Rev 2) 208 OR 230/1/60 VENTER MOTOR & CAP ACITOR Y L3 MAIN GRD G N BK Y BL BL BR Y BK 8 7 BR Y BK BL BR NO C PRESSURE SWITCH MAIN COMBUSTION AIR BL O 9 31 9 9 O O O O 7 8 8 8 L1 L1 7 7 L3 L3 O O 31 BR O 31 BR O BR L ...

  • Thomas & Betts LDAP 1200 - page 26

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 26 2) V ent Pipe Diameter and 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 . V ent pipe diameters and maximum vent lengths in the table apply to bot ...

  • Thomas & Betts LDAP 1200 - page 27

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 27 3) V enter (Flue) Outlet V enter Outlet Attachment Requirements: in ch es mm 400 61 5 2 800 82 0 3 1200 82 0 3 Mo de l LDA P Si z e V en t er Ou t let Di am e t e r Depending on the size of vent pipe as determined in Step No. 2, attach either the vent pipe directly to the venter collar or a taper -type ...

  • Thomas & Betts LDAP 1200 - page 28

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 28 7) V ent T erminal (Pipe and V ent Cap) Horizontal V ent T erminal 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 ...

  • Thomas & Betts LDAP 1200 - page 29

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 29 FIGURE 18 - Horizontal V ent T erminal NOTE: Read all measurements; drawing is not proportional. A clearance thimble is requir ed when flue pipe extends through combustible materials. Follow the requir ements of the thimble and/or the vent pipe manufacturer . Pitch flue pipe down toward outlet 1/4 p ...

  • Thomas & Betts LDAP 1200 - page 30

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 30 25. Check Installation and S tartup      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 ar ...

  • Thomas & Betts LDAP 1200 - page 31

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 31 Gas Control Knob (shown in the ON position) Gas Flow Gas Flow T op V iew Side V iew FIGURE 20 - Gas V alve ON/OFF Control Knob Check inst allation af ter startup:  V ent System T esting Procedur e 1. Seal any unused openings in the venting system. 2. Inspect the venting system for proper size and ho ...

  • Thomas & Betts LDAP 1200 - page 32

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 32 MAINTENANCE AND SERVICE The material contained in the MAINTENANCE AND SER VICE 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. T o ensure long life and satisfactory performance, a h ...

  • Thomas & Betts LDAP 1200 - page 33

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 33 Fan Motor Heat Section Pressur e Switch V enter Motor Capacitor Fan Motor Capacitor High Limit Control and Adjustable Destrat Fan Contr ol Disconnect Switch T ransformer Gas V alve DSI Control (Cir cuit Board) Fan P ermissive Relay Ignitor Heat Permissi ve Relay (Models 800 and 1200) Flame Sensor T erm ...

  • Thomas & Betts LDAP 1200 - page 34

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 34 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 bur ...

  • Thomas & Betts LDAP 1200 - page 35

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 35 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 . CAUTION: Due to high voltage on the spark wir e and electrode, do not touch when energ ...

  • Thomas & Betts LDAP 1200 - page 36

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 36 34. Main V enter Motor and Wheel (Models 800 and 1200 only) 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 vente ...

  • Thomas & Betts LDAP 1200 - page 37

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 37 37. Combustion Air Pressure Switch(es) 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. Size 400 has o ...

  • Thomas & Betts LDAP 1200 - page 38

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 38 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 seque ...

  • Thomas & Betts LDAP 1200 - page 39

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 39 Trial for Ignition Call for Heat Is there a spark across gap at ignitor? Does gas ignite? Is there minimum flame current at the flame sensor? Is there minimum flame current at the control module? Replace control module. Check connections to flame sensor or moisture in bulkhead connector. Is the flame s ...

  • Thomas & Betts LDAP 1200 - page 40

    Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 40 FOR SERVICE OR REP AIR, FOLLOW THESE STEPS IN ORDER: FIRST : Contact the Installer Name __________________________________________________________ Address_________________________________________________________ __________________________________________________________ ________________________________ ...

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