STA-RITE SR200NA Service Manual page 16

SECTION TWO – Heater Installation
Heater Venting – Negative Pressure
Clean the Interior Surface
Vent Body
Clean and RTV
This Surface
Combustion
Chamber
Flue Collar
Figure 2-6: Flue collar
V V V V e e e e r r r r t t t t i i i i c c c c a a a a l l l l V V V V e e e e n n n n t t t t i i i i n n n n g g g g - - - - N N N N e e e e g g g g a a a a t t t t i i i i v v v v e e e e P P P P r r r r e e e e s s s s s s s s u u u u r r r r e e e e
( ( ( ( S S S S e e e e e e e e F F F F i i i i g g g g u u u u r r r r e e e e 2 2 2 2 - - - - 7 7 7 7 ) ) ) )
Vent the heater vertically in a negative pressure (posi-
tive draft) system in accordance with the National Fuel
Gas Code, ANSI Z223.1, and local codes. Class "B"
Double-wall vent connector is recommended; however
single-wall pipe is allowed by the National Fuel Gas
Code in some circumstances. Consult your local code
official for detailed information.
Table 2-E: Permitted Minimum and Maximum Vent Heights By Size and Heater Model
Read "VERTICAL VENTING – NEGATIVE PRESSURE" (above) before using this table.
Type B Double Wall Vent With Type B Double Wall Connector In Feet (Meters)
Vent Size Min. Height
6 in. 6 Ft. (1.8)
7 in. 6 Ft. (1.8)
8 in. 6 Ft. (1.8)
9 and 10 in. 6 Ft. (1.8)
Type B Double Wall Vent With Single Wall Connector In Feet (Meters)s
Vent Size Min. Height
6 in. 6 Ft. (1.8)
7 in. 6 Ft. (1.8)
8 in. Not Rec.
9 in. Not Rec.
10 in. Not Rec.
4" x 8" Metal
Flue Collar
Vent Pipe
2855 0597 RTV
Model 200
Max. Height
100 Ft. (30.5)
100 Ft. (30.5)
100 Ft. (30.5)
50 Ft. (15.3)
Model 200
Max. Height
15 Ft. (4.6)
8 Ft. (2.4)
Not Rec.
Not Rec.
Not Rec.
Risk of asphyxiation. Do not use a draft
hood with this heater.
To connect a negative pressure metal gas vent to the
heater, order the appropriate Metal Flue Collar from
thechart below:
Metal Flue Collar Kit
4x6"
4x8"
1. See Table 2-E, below, to determine allowable vent
sizes for your heater.
N N N N O O O O T T T T E E E E : : : : Table 2-E is for installations in which the total
lateral vent length (that is, the horizontal distance from
the Metal Flue Collar to the main vertical portion of the
vent) is less than 1/2 the total vent height (the vertical
distance from the flue collar to the vent termination)
and which have three or less elbows in the system. For
venting systems which do not meet these conditions,
consult the National Fuel Gas Code, ANSI Z223.1 (U.S.)
and CSA-B149.1 (Canada).
Model 333
Min. Height Max. Height
30 Ft. (9.0) 100 Ft. (30.5)
10 Ft. (3.0) 100 Ft. (30.5)
6 Ft. (1.8) 100 Ft. (30.5)
6 Ft. (1.8) 100 Ft. (30.5)
Model 333
Min. Height Max. Height
Not Rec. Not Rec.
10 Ft. (3.0) 20 Ft. (6.0)
6 Ft. (1.8) 20 Ft. (6.0)
Not Rec. Not Rec.
Not Rec. Not Rec.
2-7
Sta-Rite Part No.
77707-0076
77707-0077
Model 400
Min. Height Max. Height
Not Rec. Not Rec.
15 Ft. (4.6) 100 Ft. (30.5)
8 Ft. (2.4) 100 Ft. (30.5)
6 Ft. (1.8) 100 Ft. (30.5)
Model 400
Min. Height Max. Height
Not Rec. Not Rec.
15 Ft. (4.6) 50 Ft. (15.3)
8 Ft. (2.4) 20 Ft. (6.0)
6 Ft. (1.8) 6 Ft. (1.8)
Not Rec. Not Rec.