WEATHER-RITE™ NP Technical Data


Model
  
CTHN-40
CTHN-60
CTHN-80
CTHN-100
Minimum Length of Straight Tube*
[ft, in] A
10
20
20
30
Minimum Length of U-Tube*
[ft, in] B
11,6
11, 6
11, 6
16, 6
Overall Minimum Length of Straight Tube*
[ft, in] C
12,3
22, 3
22, 3
32, 3
Overall Minimum Length of U-Tube*
[ft, in] D
13,2
13, 2
13, 2
18, 2
*For additional lengths, please see the current Installation, Operation and Service Manual.
Input (Btu/h) x 1000
40
60
80
100
Inlet Pressure
[in wc] NG min.
4.6
4.6
4.6
4.6
 
LPG Propane min.
11
11
11
11
 
NG & LPG Propane max.
14
14
14
14
Gas Connection
NPT
½"
½"
½"
½"


Model
  
CTHN-125
CTHN-150
CTHN-175
CTHN-200
Minimum Length of Straight Tube*
[ft, in] A
40
40
50
50
Minimum Length of U-Tube*
[ft, in] B
21, 6
21, 6
26, 6
26, 6
Overall Minimum Length of Straight Tube*
[ft, in] C
42, 3
42, 3
52, 5
52, 5
Overall Minimum Length of U-Tube*
[ft, in] D
23, 2
23, 2
28, 2
28, 2
*For additional lengths, please see the current Installation, Operation and Service Manual.
Input (Btu/h) x 1000
125
150
175
200
Inlet Pressure
[in wc] NG min.
4.6
4.6
5
5
 
LPG Propane min.
11
11
11
11
 
NG & LPG Propane max.
14
14
14
14
Gas Connection
NPT
½"
¾"
¾"
¾"


Weights
  
Overall Length of Tube and Accessory Package
[ft]
10
20
30
40
50
60
70
80
Hot Rolled or Aluminized Tube with Aluminum Reflector
[lb]
52
86
120
161
206
240
281
322
Aluminized Tube with Stainless Steel End Caps
[lb]
66
113
152
208
265
304
360
416
Burner
[lb]
35
35
35
35
35
35
35
35
Aluminized U-Tube with Aluminized End Caps
[lb]
19
19
19
19
19
19
19
19
Aluminized U-Tube with Stainless Steel End Caps
[lb]
20
20
20
20
20
20
20
20

General Data
Fuel
  
NG or LPG Propane
Electrical Supply
  
120 V, 60 Hz, 1 A for 40 - 150; 120 V,60 Hz, 2 A for 175 & 200
Heat Exchanger Tubing
  
10 ft. Sections, 4" dia, 16 Gauge, First 10 ft. ALUMI-THERM® Steel Tubing
[Remaining Hot Rolled, Heat Treated Aluminized or Double Porcelain Coated Steel Tubing]
Exhaust Flue
dia
4" See Installation, Operation and Service Manual for details
Reflector and End Caps
  
.024 Aluminum [Optional - .024 Stainless Steel Type 304]
Control System
  
Fully Automatic, Three-Try, 100% Shut-Off, Direct Spark Electronic Ignition Control
Approved As
  
Indoor (Vented or Unvented)
Certification
  
ANSI Z83.20 / CSA 2.34, 2.17
Warranty
  
Three-Year Limited (Refer to Installation, Operation and Service Manual for Details)


Clearances to Combustibles**
Model
  
CTHN-40
CTHN-60
CTHN-80
CTHN-
100
CTHN-
125

CTHN-
150
CTHN-
175
CTHN-200
   
HZ
45°
HZ
45°
HZ
45°
HZ
45°
HZ
45°
HZ
45°
HZ
45°
HZ
45°
 
A
5
8
5
8
5
9
5
10
5
10
5
10
8
10
8
10
 
B
20
4
27
4
30
4
32
4
35
4
39
4
44
4
47
4
 
C
41
35
51
45
58
54
60
57
65
63
71
66
74
69
76
73
 
D
20
43
27
45
30
55
32
56
35
58
39
61
44
68
47
71
**Clearances B, C, and D can be reduced by 50% for locations 25 ft. (7 m) or more downstream of the burner. For other mounting options and associated clearances, complete installation, operation and service criteria, please see the current issue of the Installation, Operation and Service Manual.
616 North 5th Street • Minneapolis, MN 55401 • 1.800.589.3691 • wr-sales@weather-rite.com