User Manual
27
6-189.14
DIMENSIONAL DATA - MODEL BDP
W
X
F
C
CC
G
DD
J
M (APPRO X.)
L (MIN. D ISTANCE TO W ALL)
N
S
O
K
EE
5
CC
DD
J
P
Q x V
R x T
/
8"
7
4
/
16"
9
5
/
4"
3
/16"
9
FILTER RACK
(OPTIONAL)
BLOW ER
EN CLOSURE
(OPTIONAL)
A
H
D  (OPENING)
BB
E
AA
B
K
L (MIN. D ISTANCE TO W ALL)
G
j 
For some models, this is the dimension of the vent transition outlet supplied.
k
  BDP 150 thru BDP 300 — 4 holes (2 on blower and 2 on unit). BDP 350 and BDP 400 —-6 holes (2 on blower 
and 4 on unit). (Listed is the hole diameter and threads per inch to accept threaded rod).
l
  This is an approximate dimension for standard motors, allow 3" for sheave and optional motors.
m
 Distance between mounting hole in unit casing and mounting hole on blower. On the BDP 350 and BDP 400, 
the distance is from rear mounting hole in casing to the mounting hole on blower.
n
  For natural gas; may vary depending on control availability.
Table 27.1 - Dimensions (inches) - BDP
Blower Units - Model BDP
Figure 27.1 - Dimensional Drawings
Dimension
  Model Number
Symbol
  BDP 150  BDP 175  BDP 200  BDP 250  BDP 300  BDP 350  BDP 400
  A  21  23-1/2 25-5/8 25-5/8 28-5/8  33-5/8  40
  B  35-1/4 35-1/4 40-1/4 40-1/4 40-1/4  40-1/4 40-1/4
  C  22 22 25 25 25  25 25
  D  18-9/16 21-1/16 23-3/16 23-3/16 26-3/16  31-3/16  37-1/2
  E  20 20 24 24 24  24 24
  F  12  12 13-1/2 13-1/2 14  –  –
  G  6-9/16 6-9/16  7-1/2  7-1/2  7-1/2  7-1/2  7-1/2
  H  17-3/8 19-7/8  22  22  25  30  36-3/8
  J j  5 5 5 6 6  6 6
  K  Mounting Holes k 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16
 L w/ Blwr Encl & Filt Rk 62-5/8 62-5/8 69-5/8 69-5/8 69-5/8  69-5/8 69-5/8
 L w/o Blwr Encl & Filt Rk 53-1/8  53-1/8  61  61  61  61  65
  M l  47-1/8 47-1/8  55  55  55  55  59
  N m  21-1/2  21-1/2  25-7/16  25-7/16  24-15/16 17-15/16  22
  O  7-1/4 7-1/4 8-1/2 8-1/2 8-1/2  8-1/2 8-1/2
  P  30 30 34 34 34  34 34
  Q Blower Encl Ht  21-3/8 21-3/8 25-1/8 25-1/8 25-1/8  25-1/8 25-1/8
  R Inlet Duct Height  20  20  23-3/4  23-3/4 23-3/4  23-3/4 23-3/4
  S Center to Center   
  Blower Mtg. Holes
  T Inlet Duct Width  27-1/2 27-1/2 32-3/4 32-3/4 32-3/4  42-7/8 42-7/8
  V Blower Encl Width  29  29  34-1/4  34-1/4 34-1/4  44-3/8 44-3/8
  W  – – – – –  5 5
  X  – – – – – 16 16
  AA  8 8 9 9 9 9 9
  BB  7-1/4 7-1/4 7-1/4 7-1/4 7-1/4  7-1/4 7-1/4
  CC  – – – – –  – –
  DD  2-3/4 2-3/4 2-3/4 3-3/8 3-3/8  3-3/8 6-13/16
  EE  56-5/8 56-5/8 63-5/8 63-5/8 63-5/8  63-5/8 63-5/8
  Gas Connections n  1/2 1/2 1/2 1/2 1/2  3/4 3/4
  Std. Mtr. Sheave Dia.   3 3 3 3 3  3 4-1/2
 Std. Blower Sheave Dia. 11  7  14  10  7  6  10
  Blower Wheel Diameter 13 13 15 15 15  15 15
  Approx. Weight  221 237 315 315 339  498 498
 17-5/16 17-3/8 20-3/8 20-3/8 20-3/8 20-3/8 20-3/8
Figure 27.2 - Combustible Material and  
Service Clearances
A
D 
B
C 
Access
Side
Table 27.2 - Combustible Material  
Clearances j
j Provide sufficient room around the heater to allow for 
proper combustion and operation of fan. Free area 
around the heater must not be less than 1-1/2 times 
the discharge area of the unit.
Access  Non-Access      Top of Power
 Model  Side  Side  Top Bottom  Exhauster
  Size  (A)  (B)  (C)  (D)  (Not shown)
 150-175  1  1  4 12  2   
  200-400  1  1  5 12  3 










