Brochure
21
6-189.9
DIMENSIONAL DATA - MODEL PDP
Propeller Units - Model PDP
  Dimension  Model Number
  Symbol  PDP 150  PDP 175  PDP 200  PDP 250  PDP 300  PDP 350  PDP 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 ➁  5 5  5 6  6  6 6
  K (Mounting   
  Holes) 
➂
  L 
➃  35-13/16 35-9/16  40-3/4  40-3/4  40-3/4  40-3/4  44-3/16
  M  29-13/16 29-9/16  34-3/4  34-3/4  34-3/4  34-11/16 38-3/16
  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  3-3/8  3-3/8  3-3/8  3-3/8 6-13/16
  EE  30-1/2 30-1/2 32-7/8 32-7/8  32-7/8  32-7/8 32-7/8
  LL  31-1/8 31-1/8 34-7/8 34-7/8 36-1/4  35-1/2 40-1/2
 Gas  Connections 
➄
  1/2 1/2 1/2 1/2  1/2  3/4 3/4
  Fan Diameter 16  18  20 20  22  22  24
  Approx. Weight 168  175  239  239  269  338  418
➀
 Do not use propeller units with duct work.
➁
For some models, this is the dimension of the vent transition outlet supplied.
➂
 PDP 150 through PDP 300 — 2 holes (and the level hanging adjustment feature). PDP 350 through  
PDP 400 — 4 holes. (Listed is the hole diameter and threads per inch to accept threaded rod).
➃
 Dimension equals overall plus 6".
➄ 
For natural gas; may vary depending on control availability.
Table 21.1 - Dimensions (inches) - PDP ➀
Figure 21.2 - Combustible Material and  
Service Clearances
Figure 21.1 - Dimensional Drawings
A
H
D (OPENING)
BB
E
AA
B
K
W
X
F
C
M
EE
LL
CC
G
DD
J
L
(MIN. DISTANCE TO WALL)
K
 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16 3/8-16
A
D 
B
C 
Access
Side
Table 21.2 - Combustible Material  
Clearances ➀
➀ 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 
342844 6-189.9.indd 21 11/11/14 9:59 PM










