Product Brochure
25
6-189.15
DIMENSIONAL DATA - MODEL HD/HDB
Propeller Units - Model HD
Figure 25.1 - Dimensional Drawings - Model HD
Figure 25.2 - Dimensional Drawings - Model HDB
Blower Units - Model HDB
Table 25.1 - Dimensions (inches) - HD
Table 25.3 - Clearance to Combustibles, Model HD/HDB
Table 25.2 - Dimensions (inches) - HDB
 HD30 HD45  HD60 HD75 HD100/125 
  26.8 26.8  26.8 26.8  35.5
 12.2 12.2  18.0 18.0  20.5
 16.5 16.5  16.5 16.5  22.0
 14.9 14.9  14.9 14.9  22.5
 10.1 10.1  15.9 15.9  18.4
 7.5  7.5  10.7  10.7  14.0
 18.5 18.5  18.5 18.5  -
 7.6 7.6  7.8 7.8  8.4
 1/2 1/2  1/2 1/2  1/2
 34.5 34.5  34.5 34.5  43.0
 22 22 25 25  31.0
 10 10 14 14  18.0
 67 72 92 97  143
  3 3  3 3  4
Models
A
B
C
D
E
F
G
H
Gas Connection
I
J
Fan Diameter
Approx. Shipping Weight (lbs.)
Vent Pipe Connector  
Diameter (in)
  HDB 60  HDB 75  HDB100/125
 26.8  26.8  35.5
 18.0  18.0  20.5
 16.5  16.5  22.0
 14.9  14.9  22.5
 15.9  15.9  18.4
 10.7  10.7  14.0
 18.5  18.5  -
 7.8  7.8  8.4
   1/2   1/2   1/2
 34.5  34.5  44.5
 25.0  25.0  41.5
   9 - 7   9 - 7   10 - 10
 92  97  151
 3  3  4
Models
A 
B
C
D
E
F
G
H
Gas Connection
I
J
Blower
Approx.Shipping Weight (lbs.)
Vent Pipe Connector  
Diameter (in)
MOUNTING 
BRACKET 
SIZE 30-75
REAR VIEW
ACCESS VIEW
ELECTRICAL 
CONNECTION
POWER VENTER 
VENT PIPE 
CONNECTION
GAS
CONNECTION
ADJUSTABLE 
LOUVERS
14.9" BETWEEN 3/8"-16 MOUNTING HOLES 
(MODEL SIZES 100 AND 125 ONLY)
MOUNTING HOLES TYP 
3/8 x 1" LONG
13.5" BETWEEN 3/8"-16 MOUNTING HOLES 
(MODEL SIZES 100 AND 125 ONLY)
ACCESS
PANEL
 H 
 B 
 1.00 
  A 
 F 
 J 
 I 
D OPENING
C
 3.5"
 G
E
OPENING
 10"
REAR VIEW
ACCESS VIEW
GAS 
CONNECTION
ELECTRICAL
CONNECTIONS
ACCESS
PANEL
 B
 1.0"
D OPENING
 H
 F
MOUNTING 
BRACKETS 
SIZE 30-75
POWER VENTER
VENT PIPE 
CONNECTION
 A
 I
 J
 C
 E
OPENING
ADJUSTABLE
LOUVERS
MOUNTING HOLES TYP
3/8 X 1" LONG
 G
14.9" BETWEEN 3/8"-16 MOUNTING HOLES
(MODEL SIZES 100 AND 125 ONLY)
14.9" BETWEEN 3/8"-16 MOUNTING HOLES
(MODEL SIZES 100 AND 125 ONLY)
14.9" BETWEEN 3/8"-16 MOUNTING HOLES
(MODEL SIZES 100 AND 125 ONLY)
 3.5"
 10.0"
MOUNTING 
BRACKET 
SIZE 30-75
REAR VIEW
ACCESS VIEW
ELECTRICAL 
CONNECTION
POWER VENTER 
VENT PIPE 
CONNECTION
GAS
CONNECTION
ADJUSTABLE 
LOUVERS
14.9" BETWEEN 3/8"-16 MOUNTING HOLES 
(MODEL SIZES 100 AND 125 ONLY)
MOUNTING HOLES TYP 
3/8 x 1" LONG
13.5" BETWEEN 3/8"-16 MOUNTING HOLES 
(MODEL SIZES 100 AND 125 ONLY)
ACCESS
PANEL
 H 
 B 
 1.00 
  A 
 F 
 J 
 I 
D OPENING
C
 3.5"
 G
E
OPENING
 10"
REAR VIEW
ACCESS VIEW
GAS 
CONNECTION
ELECTRICAL
CONNECTIONS
ACCESS
PANEL
 B
 1.0"
D OPENING
 H
 F
MOUNTING 
BRACKETS 
SIZE 30-75
POWER VENTER
VENT PIPE 
CONNECTION
 A
 I
 J
 C
 E
OPENING
ADJUSTABLE
LOUVERS
MOUNTING HOLES TYP
3/8 X 1" LONG
 G
14.9" BETWEEN 3/8"-16 MOUNTING HOLES
(MODEL SIZES 100 AND 125 ONLY)
14.9" BETWEEN 3/8"-16 MOUNTING HOLES
(MODEL SIZES 100 AND 125 ONLY)
14.9" BETWEEN 3/8"-16 MOUNTING HOLES
(MODEL SIZES 100 AND 125 ONLY)
 3.5"
 10.0"
Recommended Service 
Clearance
HD HDB HD/HDB
Top and Boom 1" 6" 18"
Access Side 1" 6" 18"
Non-Access Side 1" 6" 18"
Rear 18" 18" 18"
Vent Connecto
r
4" 4" 18"
Clearance to Combusble 
MaterialUnit Side










