Raypak 336A User Manual
Page 17
17
Low NOx UNITS
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
R207A
199.5
20”
6”
55-5/8”
10.0”
11-3/4”
3/4”
2”
174
193
12
R267A
266.0
23”
7”
56”
11.5”
11”
3/4”
2”
197
216
15
R337A
332.5
26”
8”
57”
13.0”
10-5/8”
3/4”
2”
219
238
17
R407A
399.0
29”
9”
58-1/2”
14.5”
12-1/8”
3/4”
2”
237
256
20
Designation for a Digital heater using natural gas is “EN”.
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-R407A-EN-X = Plastic headers, 407 model size, digital, natural gas, cupro-nickel.
For altitudes above 5,000 ft., consult the factory.
For Canada, no de-rating is required for elevations up to 4500 ft.
Plastic (polymer) headers cannot be used for ASME installations.
*Note: For outdoor stack, use J dimension in the table above for appropriate size PLUS six 6) inches.
B
C
INDOOR
DRAFTHOOD
31-13/16"
7-3/4"
GAS
CONNECTION
J
A
20-1/2"
(22-1/2" ASME)
34”
STACKLESS
OUTDOOR
TOP
28”
26-1/2”
ELECTRICAL
CONNECTION
4-3/8”
(3-3/8” ASME)
8-7/8”
(6-5/8” ASME)
D
10"
FLUE
L
C
SPECIFICATIONS AND DIMENSIONS
Amp Draw
120 Volt
240 Volt
6
3
*