Technical Data
Digital and Millivolt Gas Heaters
B
8-7/8"
4-3/8"
(3-3/8" ASME)
(6-5/8" ASME)
J
C
INDOOR
DRAFTHOOD
32-11/16"
ELECTRICAL
CONNECTION
40"
STACKLESS
OUTDOOR TOP
38"
26-5/8"
(28-5/8" ASME)
13-1/4"
GAS
CONNECTION
Amp Draw
120 volt 240 volt
28"
A
Digital
4
2
Shipping Weights (lbs)
w/ Polymer w/ cast iron
Headers Headers
and Stackless and Stackless
BTUH
Input
(000)
199.5
266.0
332.5
399.0
(A)
Cabinet
Width
20”
23”
26”
29”
(B)
Flue
(C)
Indoor
(J)
Heater
Model
R206A
R266A
R336A
R406A
Minimum
Gas
Water
Conn.
2”
2”
2”
2”
Indoor
Drafthood
Diameter Drafthood
Conn.
3/4”
3/4”
3/4”
3/4”
Top
187
210
230
249
Top
206
229
249
268
6”
7”
8”
9”
61-5/8” 11-7/8”
62”
63”
12
15
17
20
11”
10-5/8”
64-1/2” 12-5/16”
Designation for a Digital heater using propane gas is “EP”; a Digital heater using natural gas is “EN”.
Designation for a Millivolt heater using propane gas is “MP”; a Millivolt heater using natural gas is “MN”.
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-R406A-EN-X = Plastic headers, 406 model size, digital, natural gas, cupro-nickel
Reduce input 4% for each 1000 feet above sea level when installed above 2000 feet elevation.
Manufactured under Patent No. 3,623,458.
The Pool and Spa Heating Expertssm
Swimming Pool and Spa
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