SPECIFICATIONS AND DIMENSIONS
Heater
Model
BTUH
Input
(000)
(A)
Cabinet
Width
(B)
Flue
Dia.
(C)
Indoor
Drafthood
(D)
(J)
Min.
Gas
Conn.
Water
Conn.
Shipping Weights (lbs)
Standard
Heater
w/Stackless
Top
ASME
Heater
w/Stackless
Top
Indoor
Draft-
hood
R268
266.0
23”
7”
62”
11.5”
11”
3/4”
2”
210
229
16
R408
399.0
29”
9”
64-9/16”
14.5”
12-1/8”
3/4”
2”
249
268
21
Designation for a heater using propane gas is “EP”; a heater using natural gas is “EN”.
Prefix “B” is for brass (ASME) headers.
Suffix “X” is for cupro-nickel tubing.
EXAMPLE:
B-R408-EN-X
= Brass headers, 408 model size, AFT, 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
*Note: For outdoor stack, use J dimension in the table above for appropriate size PLUS six (6) inches.
B
C
INDOOR
DRAFTHOOD
38"
13-1/4"
GAS
CONNECTION
J*
A
28-5/8"
32-11/16"
ELECTRICAL
CONNECTION
40"
STACKLESS
OUTDOOR TOP
28"
3-3/8"
6-5/8"
D
10
"
FLUE
L
C
Amp Draw
120 Volt 240 Volt
4
2
15
