Instruction/ maintenance manual of the product UDAP Thomas & Betts
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Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 1 APPLIES TO: Models UDAP and UDAS Series F an-T ype Unit Heaters Installation/Operation FORM RZ-NA I-UDA C E R T I F I E D Index (b y page) Burner ................................................... 16, 29 Burner Orifice .
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 2 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 result in sever e personal injury or death and/or pr operty damage.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 3 Special Installations (Aircraft Hangar s/ Repair Garages/ P arking Garages) 3. W arranty 4. Uncrating and Preparation Installations in aircraft hangars should be in accordance with ANSI/NFP A No. 409 (latest edition), Standard for Aircraft Hangars; in public garages in accordance with ANSI/NFP A No.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 4 RIGHT SIDE VIEW (Access Panel) E F R - Hanger Dimension for 2-pt Suspension T OP VIEW P and Q - Hanger Dimensions for 4-pt Suspension M and N - Hanger Dimens.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 5 Combustion Air Connection (see T echnical Data f or size) FRONT VIEW A B C D REZNOR RIGHT SIDE VIEW (Access Panel) E F Thermostat Connection (30-45, 150-400.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 6 6. T echnical Data S ize 30 45 60 75 100 125 BTUH 30,000 45, 000 60,000 75,00 0 105,000 120,00 0 kw 8.8 13.2 17.6 22.0 30.8 3 5.2 T h e r m a l E f f i c i e n c y ( % ) 8 28 38 38 38 38 3 BTUH 24,600 37, 350 49,800 62,25 0 87,150 99,600 kw 7.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 7 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 valve outlet pressure. In addition, if the heater is being installed at an altitude above 6000 ft (1830M), the pressure switch will have to be changed.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 8 Confined Space: A space whose volume is less than 50 cubic feet per 1000 BTUH of the installed appliance input rating Comb ustion Air Requirements for a Heat.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 9 FIGURE 6 - Thr ow for Fan Models UDAP and UDAS 10. Unit Heater Location Locate the heater so that it is a minimum of five feet (1.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 10 W ARNINGS: Check the supporting structure to be used to verify that it has sufficient load carry- ing capacity to support the weight of the unit. Suspend the heater only from the thr eaded nut retainers or with a man- ufacturer provided kit.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 11 FIGURE 7B - Swivel Connectors to Suspend the Heater fr om 1” Pipe, Option CK8 (2-pt) or CK10 (4-pt) FIGURE 7A - Suspending the Heater with Rods fr om the Thr eaded Nut Retainers (either two or four point suspension) Add a 3/8 nut and washer to lock the hanger rod to the heater .
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 12 Ga s Co nne c ti o n (i nc h e s ) 30 45 60 75 100 12 5 150 17 5 200 225 25 0 300 35 0 400 N atu r al 1 /2 1/2 1 /2 1 /2 1 /2 1 /2 1 /2 1 /2 1 /2 3 /4 3 /4 .
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 13 FIGURE 10 - Gas connection is at the pipe nipple that extends outside the cabinet Illustration shows both a vertical and horizontal gas supply; requir ements are the same. V alve Outlet or Orifice Pressure Setting Measuring valve outlet gas pressure cannot be done until the heater is in opera- tion.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 14 12. Gas Piping and Pressures (cont’ d) 2. Locate the 1/8” output pressure tap on the valve (See FIGURE 1 1 ). T urn the knob on the top of the valve to “OFF”. Connect a manometer to the 1/8" pipe outlet pressure tap in the valve.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 15 High Altitude Capacity Changes The input and/or the capacity of the heater changes with the derate. The tables below list inputs and capacities at altitudes from sea level to 10,000 ft (3045M).
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 16 All electrical wiring and connections, including electrical grounding MUST be made in accordance with the National Electric Code ANSI/NFP A No.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 17 Make sure that the heat anticipator setting on the thermostat is 0.6 amps (or in accordance with the amperage value noted on the wiring diagram of your heater). Make thermostat connections at the terminal strip on the back of the heater .
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 18 18. Flame Rollout Switch - Siz es 30-125 only 16. Comb ustion Air Pro ving Switch (cont’ d) Sizes 30-125 are equipped with a temperature activated manually reset flame rollout switch. The flame rollout switch is located at the top of the burner assembly .
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 19 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.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 20 20. Ignition System (cont’ d) Abnormal Heat Cycle Functions Normal Heat Cycle Operating Sequence (cont’ d) When the pressure switch is proven closed, the control begins the prepurge time. If flame is present any time while in prepurge, the prepur ge time is restarted.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 21 If flame is not established on the fourth trial for ignition (initial try plus 3 re-tries), the control de-energizes the gas valve and goes into lockout. The control goes to one flash on the green LED to indicate ignition failure lockout.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 22 The main operating gas valve is powered by the 24-volt control circuit through the thermostat and safety controls. The main control valve is of the diaphragm type providing regulated gas flow preset at the factory .
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 23 FIGURE 15A - T ypical W iring Diagram for Model UDAP or Model UDAS, Single Stage 23. Wiring Diagrams VENTER F AN MOTOR PRESSURE SWITCH SP ARK GAP OPERA TING SEQUENCE 1. SET THERMOST A T A T LOWEST SETTING, (F AN SWITCH 2.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 24 FIGURE 15B - T ypical W iring Diagram for Model UDAP or Model UDAS, Single Stage with Optional Air Recirculation VENTER F AN MOTOR PRESSURE SWITCH SP ARK GAP OPERA TING SEQUENCE 1. SET THERMOST A T A T LOWEST SETTING, F AN SWITCH A T "AUTO" POSITION.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 25 FIGURE 15C - T ypical W iring Diagram for Model UDAP or Model UDAS, T wo Stage Gas V alve VENTER F AN MOTOR PRESSURE SWITCH SP ARK GAP OPERA TING SEQUENCE 1. SET THERMOST A T A T LOWEST SETTING, (F AN SWITCH A T "AUT O" POSITION, OPTION CL18 ONL Y).
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 26 24. Chec k Installation and Star tup o Check to be sure that all screws used to hold shipping brackets were re- installed in the heater cabinet. o Check suspension. Unit must be secure and level. o Check clearances from combustibles.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 27 4. T urn the gas control knob clockwise to "OFF". 5. W ait 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 W ARNINGS printed above or on the Operating Label on the heater .
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 28 MAINTENANCE AND SER VICE W ARNING: If you turn off the power supply , turn off the gas. See Hazard Levels, page 2. 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.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 29 27. Burner Maintenance This heater is equipped with a T CORE 2 ® burner (patent pending). Inspect the burner/control compartment annually to determine if cleaning is nec- essary .
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 30 Instructions to Re-Install the Burner (Refer to FIGURE 17) 1. Attach the Burner Assembly - Holding the venturi tube, slide the entire burner assembly into position. Align the supports on the left side with the slots in the burner shield; sliding the supports into the slots.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 31 29. Ignition System DSI Integrated Control Module (circuit board) - See FIGURE 19 . The module monitors the operation of the heater including ignition. The only replaceable com- ponent is the 3 amp T ype A TC or A T O fuse.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 32 31. V enter Motor and Wheel 30. F an Motor , F an Blades, and Guar d Remove dirt and grease from the motor , the fan guard, and blades. Use care when cleaning the fan blades to prevent causing misalignment or imbalance.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 33 FIGURE 22 - V enter Wheel Position on Shaft 5/16” (8mm) inside 5/16” (8mm) inside V enter Wheel, Sizes 30-75 V enter Motor Plate Fan Motor Mounting Bra.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 34 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.
Form RZ-NA I-UDA, Mfg #195673 Rev 5, Page 35 General T r oubleshooting The integrated circuit board monitors the operation of the heater and includes two LED signal lights that indicate normal operation and various abnormal conditions.
Form RZ-NA I-UDA, P/N 195673 Rev 5, Page 36 FOR SER VICE OR REP AIR, FOLLO W THESE STEPS IN ORDER: FIRST : Contact the Installer Name __________________________________________________________ Address.
An important point after buying a device Thomas & Betts UDAP (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Thomas & Betts UDAP yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Thomas & Betts UDAP - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Thomas & Betts UDAP you will learn all the available features of the product, as well as information on its operation. The information that you get Thomas & Betts UDAP will certainly help you make a decision on the purchase.
If you already are a holder of Thomas & Betts UDAP, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Thomas & Betts UDAP.
However, one of the most important roles played by the user manual is to help in solving problems with Thomas & Betts UDAP. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Thomas & Betts UDAP along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
