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SPECIFICATIONS AND DIMENSIONS
Heater
Model
BTUH
Input
(000)
(A)
Cabinet
Width
(B)
Flue
Dia.
(C)
Indoor
Drafthood
(J)
Min.
Gas
Conn.
Water
Conn.
Shipping Weights (lbs)
Standard
Heater
w/Stackless
Top
ASME
Heater
w/Stackless
Top
Indoor
Draft-
hood
R206A 199.5 20” 6” 61-5/8” 11-3/4” 3/4” 2” 187 206 12
R266A 266.0 23” 7” 62” 11” 3/4” 2” 210 229 15
R336A 332.5 26” 8” 63” 10-5/8” 3/4” 2” 230 249 17
R406A 399.0 29” 9” 64-9/16” 12-1/8” 3/4” 2” 249 268 20
ATMOSPHERIC UNITS
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 “C” is for cast iron (ASME) headers; “P” is for plastic (polymer) 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 ft above sea level when installed above 2000 ft elevation.
For Canada, no de-rating is required for elevations up to 4500 ft
Plastic (polymer) headers cannot be used for ASME installations.
B
C
INDOOR
DRAFTHOOD
38"
13-1/4"
GAS
CONNECTION
J
A
26-5/8"
(28-5/8" ASME)
32-11/16"
ELECTRICAL
CONNECTION
40"
STACKLESS
OUTDOOR TOP
28"
4-3/8"
(3-3/8" ASME)
8-7/8"
(6-5/8" ASME)