Technical Data
|
Digital
Low NOx Technical Data |
|
|
|
Heater
Model |
BTUH
Input (000) |
A
|
B
|
C
|
J
|
Gas
Conn |
Water
Conn |
Ship
Weight (lbs)
|
||
|
ASME
|
Polymer
|
Indoor
Top |
||||||||
|
R-207
|
199.5
|
20
|
6
|
61-5/8
|
11-7/8
|
3/4
|
2
|
193
|
174
|
12
|
|
R-267
|
266.0
|
23
|
7
|
62
|
11
|
3/4
|
2
|
216
|
197
|
15
|
|
R-337
|
332.5
|
26
|
8
|
63
|
10-5/8
|
3/4
|
2
|
238
|
219
|
17
|
|
R-407
|
399.0
|
29
|
9
|
64-1/2
|
12-5/16
|
3/4
|
2
|
256
|
237
|
20
|
| Designation
for a Digital heater using natural gas is “EN”. Prefix “P” is for plastic (polymer) headers; “C” is for cast iron (ASME) headers. Suffix “X” is for cupro-nickel tubing; “C” is for copper tubing Example: P-R407A-EN-X = Plastic headers, 407 model size, digital, natural gas, cupro-nickel For elevations above 5000 feet consult the factory. Manufactured under Patent No. 3,623,458. Plastic (polymer) headers cannot be used for installations requiring ASME certification. |
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| How
to Pick the Right Size Heater Proper heater size is based on the time required to heat the pool or spa. If water is heated for each intended use, energy-saving rapid heating may be appropriate. If water is gradually heated to the desired temperature and then maintained at that temperature, a smaller heater may be acceptable. To determine proper heater size, use the following formula. |
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