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Modine Manufacturing BD Installation And Service Manual

Other manuals for BD: Installation And Service Manual

Summary of BD

  • Page 1

    July, 2003 installation and service manual gas-fired unit heaters models pd and bd 6-553.4 5h73889a rev. E warning improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death, and could cause exposure to substances which have been determined by va...

  • Page 2: Warning

    2 special precautions the installation and maintenance instructions in this manual must be followed to provide safe, efficient and trouble-free operation. In addition, particular care must be exercised regarding the special precautions listed below. Failure to properly address these critical areas c...

  • Page 3: Danger

    3 si (metric) conversion factors / unit location danger appliances must not be installed where they may be exposed to a potentially explosive or flammable atmosphere. Si (metric) conversion factors table 3.1 important to prevent premature heat exchanger failure, do not locate any gas-fired appliance...

  • Page 4

    4 unit location sound and vibration levels all standard mechanical equipment generates some sound and vibration that may require attenuation. Libraries, private offices and hospital facilities will require more attenuation, and in such cases, an acoustical consultant may be retained to assist in the...

  • Page 5: Warning

    5 venting note: a vent is the vertical passageway used to convey flue gases from the unit or the vent connector to the outside atmosphere. A vent connector is the pipe which connects the unit to a vent or chimney. Vent connectors serving category i appliances shall not be connected into any portion ...

  • Page 6

    6 installation additional venting requirements for category ii units vent system must provide for drainage of condensate. At the low point of the vent system, install a tee fitting with a connector and attach flexible tubing, minimum 3/8 inch i.D., and run to a drain. Tee fitting and associated cond...

  • Page 7: Warning

    7 warning 1. All field gas piping must be pressure/leak tested prior to operation. Never use an open flame. Use a soap solution or equivalent for testing. 2. Gas pressure to appliance controls must never exceed 14" w.C. (1/2 psi). 3. To reduce the opportunity for condensation, the minimum sea level ...

  • Page 8: Warning

    8 installation electrical connections 1. Installation of wiring must conform with local building codes, or in the absence of local codes, with the national electric code ansi/nfpa 70 - latest edition. Unit must be electrically grounded in conformance to this code. In canada, wiring must comply with ...

  • Page 9: Important

    When installing the heater, always follow good duct design practices for even distribution of the air across the heat exchanger. Recommended layouts are shown in figure 9.1. When installing blower units with ductwork the following must be done. 1. Provide uniform air distribution over the heat excha...

  • Page 10

    10 to install 1. Remove and discard the motor tie down strap and the shipping block beneath the belt tension adjusting screw (not used on all models.) 2. Adjust motor adjusting screw for a belt deflection of approximately 3/4" with five pounds of force applied midway between the sheaves (refer to fi...

  • Page 11: Important

    1. Turn off power to the unit at the disconnect switch. Check that fuses or circuit breakers are in place and sized correctly. Turn all hand gas valves to the “off” position. 2. Remove electrical junction box cover. 3. Check that the supply voltage matches the unit supply voltage listed on the model...

  • Page 12

    12 start-up procedure main burner adjustment the gas pressure regulator (integral to the combination gas control) is adjusted at the factory for average gas conditions. It is important that gas be supplied to the unit heater in accordance with the input rating on the serial plate. Actual input shoul...

  • Page 13

    Control operating sequence unit heaters are supplied with standing pilot control systems as standard or intermittent pilot systems with continuous retry as an option. On standing pilot and mechanical modulation systems the main burner is turned off 100% when the thermostat is satisfied, but the pilo...

  • Page 14

    14 table 14.1 propeller and blower unit heaters – pd and bd models single-stage, standing pilot, 100% shut-off – utilizes a single-stage combination gas control and thermocouple. Pilot needs to be manually lit initially and stays lit. Single-stage, intermittent pilot ignition, 100% shut-off with con...

  • Page 15

    15 ➀ ➁ ➂ ➃ ➄ ➅ ➆ ➇ ➈ all units include the standard (std) features. The unit must be reviewed to determine the optional (opt) features that may have been supplied with the unit. (1) gas valve a) single stage gas valve - (std) the main gas valve is factory installed on the unit heater gas train. The ...

  • Page 16

    16 options (5) control step down transformer - (std) the control step down transformer is located in the electrical junction box. The transformer is used to step down the supply power (115v, 208v, 230v, 460v, 575v) to 24v. This transformer is used to control the gas controls, fan delay relay, field ...

  • Page 17

    17 general performance data table 17.1 - performance — propeller models ➀ ➁ table 17.2 - motor data and total unit power requirements — propeller models ➀ standard model number pd 30 pd 50 pd 75 pd 100 pd 125 pd 150 pd 175 pd 200 pd 250 pd 300 pd 350 pd 400 btu/hr. Input 30,000 50,000 75,000 100,000...

  • Page 18

    18 general performance data blower models 0.0 static air pressure 0.1 static air pressure 0.2 static air pressure 0.3 static air pressure temp sheave sheave sheave sheave model rise airflow rpm hp drive turns rpm hp drive turns rpm hp drive turns rpm hp drive turns no. (°f) (cfm) no. Open no. Open n...

  • Page 19

    19 general performance data blower models 40 926 1070 3/4 -61 2.0 1130 3/4 -61 1.5 – – – – 45 823 1020 1/2 -61 2.5 1085 3/4 -61 2.0 – – – – 50 741 985 1/2 -61 3.0 1050 1/2 -61 2.5 – – – – 55 673 955 1/2 -61 3.5 1025 1/2 -61 2.5 – – – – 60 617 935 1/3 -1 3.5 1000 1/2 -61 3.0 – – – – 65 570 915 1/3 -1...

  • Page 20

    20 general performance data power code electric power 01 115/60/1 02 230/60/1 04 200/60/3 05 230/460/60/3 07 575/60/3 09 115/60/1 10 230/60/1 12 200/60/3 13 230/460/60/3 15 575/60/3 17 115/60/1 18 230/60/1 20 200/60/3 21 230/460/60/3 23 575/60/3 25 115/60/1 26 230/60/1 28 200/60/3 29 230/460/60/3 31...

  • Page 21

    21 blower sheave motor sheave blower sheave motor sheave belt no. Pitch max. Pitch belt no. Pitch max. Pitch browning dia. Dia. Browning dia. Dia. Blower sheave motor sheave belt no. Pitch max. Pitch browning dia. Dia. Table 21.2 blower drive numbers -1 a29 4 3/4 2.9 1 /2 -106 a52 9 1 4.4 5/8 -194 a...

  • Page 22

    22 performance data – nozzles mounting height, heat throw, heat spread (in feet) s s h s t t h s s 40° downward nozzle 40° splitter nozzle 90° vertical nozzle 5-way nozzles max. Mounting ht. (ft.) h 16 20 21 24 26 25 27 29 31 32 32 heat throw (ft.) t 48 61 64 71 79 76 81 86 94 96 96 heat spread (ft....

  • Page 23

    23 pd 50 pd 75 pd 100 pd 125 pd 150 pd 175 pd 200 pd 250 pd 300 pd 350 pd 400 models s s s s s s s s s s s 8' 10 23 30 34 38 42 36 54 62 58 56 10' 11 20 27 30 34 37 32 48 56 52 50 12' 12 19 24 27 31 34 29 44 51 47 46 14' 17 23 25 29 32 27 41 47 44 42 16' 16 21 24 27 29 25 38 44 41 39 18' 20 22 25 28...

  • Page 24

    24 bd 50 bd 75 bd 100 bd 125 bd 150 bd 175 bd 200 bd 250 bd 300 bd 350 bd 400 models s s s s s s s s s s s 8' 29 42 56 61 72 79 70 98 113 121 94 10' 26 38 50 55 65 70 63 88 101 108 84 12' 24 35 46 50 59 64 58 80 92 99 77 14' 22 32 43 46 55 60 53 74 85 91 71 16' 21 30 40 43 51 56 50 70 80 85 67 18' 1...

  • Page 25

    25 dimensional data propeller units - model pd a h d (opening) bb e aa b k w x f c k g l - approx min. Distance to wall is l + 6" j vent pipe ee (min. Distance to wall) l ll dimensions (inches) — pd ➀ dimension model number symbol pd 30 pd 50 pd 75 pd 100 pd 125 pd 150 pd 175 pd 200 pd 250 pd 300 pd...

  • Page 26

    26 dimensional data w x f c m (approx.) n s k ee p filter rack (optional) blower enclosure (optional) a h d (opening) bb e aa b k g j vent pipe 4-5/8'' l (min. Distance to wall) l (min. Distance to wall) rxt qxv o dimensions (inches) — bd dimension model number symbol bd 50 bd 75 bd 100 bd 125 bd 15...

  • Page 27

    27 all heating equipment should be serviced before each heating season to assure proper operations. The following items may be required to have more frequent service schedule based on the environment in which the unit is installed, and the frequency of the equipment operation. General unit when prov...

  • Page 28: Important

    28 service & troubleshooting troubleshooting important to check most of the possible remedies in the troubleshooting guide, refer to the applicable sections of the manual. Caution do not attempt to reuse any mechanical or electrical controllers which have been wet. Replace defective controller. Warn...

  • Page 29

    29 service & troubleshooting pilot does not light main burners do not light (pilot is lit) lifting flames (see figure 30.2) yellow tipping (with propane gas, some yellow tipping is always present.) wavering flames (see figure 30.1) 1. Main gas is off. 2. Power supply is off. 3. Air in gas line. 4. D...

  • Page 30

    ➀ ➀ automatic reset high limit the unit heater comes standard with an automatic reset high limit switch that will shut-off the gas should the discharge air temperature become excessive. See figure 15.1, indicator 7 for the location of either the standard automatic high limit switch. The switch shoul...

  • Page 31

    31 rating plate identification figure 31.2 - model number designations pd 150 a e m 01 30 pd - propeller unit bd - blower unit input 150 - 150,000 btu/hr input 175 - 175,000 btu/hr input 250 - 250,000 btu/hr input etc. Control code 30 - complete control code descriptions are shown on page 27 power c...

  • Page 32

    As modine manufacturing company has a continuous product improvement program, it reserves the right to change design and specifications without notice. Commercial hvac & r division modine manufacturing company 1221 magnolia avenue buena vista, virginia 24416 phone: 1.800.828.4328 (heat) fax: 540.261...