User Manual
24
6-189.14
Selection Example Conditions (Blower Unit)
In the following example, select a unit heater to meet the 
following conditions:
1. Heating output capacity = 156,000 Btu/Hr per design engineer
2. External Static Pressure = 0.2. 
3. Internal Static Pressure = 0.0. No static producing accessories 
are required
4. Heat exchanger and burner = Aluminized Steel
5. Gas Type = Propane
6. Gas Controls = Two stage Intermittent Pilot
7. Supply Voltage: 230V/60Hz/3Ph
8. Altitude: 1,000 feet
9. CFM = 2,400
Selection Example Solution (Blower Unit)
With the information listed above, the basic model, using the 
information in this catalog and the Model Nomenclature shown on 
page 32, can be selected as shown in the following example:
1.  Determine the Model and Input Rating (MBH):
  Using the Heating output capacity, the Furnace Input Rating is 
  determined from Table 13.1 The closest model to 156,000 Btu/Hr 
  output has an Btu/Hr Input rating of 200,000 Btu/Hr so the 
   Furnace Input Rating = 200. The corresponding model for a 200 
size, blower, power vented unit heater is BDP. The model and 
size are a BDP200.
2. Determination of Heat Exchanger/Burner/Drip Pan Material:
  From item #4 in the example, the Heat Exchanger and 
  Burner required are aluminized steel. Thus, the Heat Exchanger 
  Material = A from the Model Nomenclature on page 32. 
3. Determine the development sequence:
   From item #6 in the example, the IPI results in the Development 
Sequence = E from the Model Nomenclature on page 32.
4.  Determine Power Code Required:
   From page 16 we see that a unit requiring a static of 0.2 and a 
cfm of 2400 requires a 1/3 horsepower motor with a -102 drive 
that is turned open 4.0 turns. Referring to Table 11.1 it can be 
determined that for a BDP200 with a 1/3 HP motor and a -102 
drive operating on 230V/60Hz/3Ph that if will have a power  
code = 24.
5. Determine the control type:
   From item #5 in the example, the gas type is Propane Gas and 
controls are Two Stage. Given the supply voltage listed in #7, we 
can refer to Tables 18.1 and 18.2 to determine what controls are 
needed. This results in a Control Code (CC) = 88.
At this point we have a full model number of: 
BDP200AE2488NBAN
6. Altitude:
   Since deration of gas fired unit heaters is only required for 
units to be installed at 2,000 ft or greater, no high altitude kit is 
required.
UNIT SELECTION










