STA-RITE Sr200na, Sr200lp,, Sr333na, Sr333lp,, Sr400na, Sr400lp Owner's Manual page 14

4. Install vent pipe so that it can expand and contract
freely as the temperature changes. Support the vent
pipe according to applicable codes and vent manufac-
turer's instructions. Pipe support must allow the vent
pipe free movement out and back, from side to side, or
up and down as necessary, without putting a strain on
the heater or vent body. Slope horizontal pipe runs up
from the heater at least 1/4" per foot. Install Listed con-
densate drains at low points where condensate might
collect. Plumb condensate drains to a drain through
hard piping or high-temperature tubing such as sili-
cone rubber or EPDM rubber – do not use vinyl or
other low temperature tubing. Follow drain manufac-
turer's installation instructions.
5. Use Listed firestops for floor and ceiling penetrations.
Use Listed thimble for wall penetrations. Use a Listed
roof flashing, roof jack, or roof thimble for all roof pen-
etrations. Do not fill the space around the vent (that is,
Vent
Termination
1' Minimum
above snow or
Forced Air
finished grade
Inlet
(whichever is
higher)
FIGURE 13: Minimum exhaust vent clearances. Local codes may differ - consult local code officials.
Table 5: Recommended Special Gas Vents (Positive Pressure)
Brand
Saf-T Vent ® 4"
Special Gas Vent
(Single Wall)
Saf-T CI Vent
®
Special Gas Vent
(Double Wall)
Z-Vent 4" Special
Gas Vent (Type BH),
Model SVE
4' Min.
4' Min.
4' Min.
Gas Meter
3' Minimum clearance if
horizontal distance to
exhaust opening is less
than 10 feet.
Manufacturer
Heat-Fab, Inc.
38 Hayward Street
Greenfield, MA 01301
(800) 772-0739
Heat-Fab, Inc.
38 Hayward Street
Greenfield, MA 01301
(800) 772-0739
Z-Flex U.S., Inc.
20 Commerce Park North
Bedrford, NH 03110-6911
(800) 654-5600
the clear air space in the thimble or firestop) with
insulation. The roof opening must be located so that
the vent is vertical.
6. Vent Termination – Vertical (See Table 4, Page 13, for
height of vent termination above the roof. See Table 7,
Page 15, for Listed terminations.) Use a Listed vent ter-
minal specified by local and national codes and your
manufacturer's instructions. A roof termination must be
vertical.
7. Vent Termination – Horizontal (See Table 7). Use a list-
ed wall thimble and vent terminal from Table 7.
The terminal must be located (see Figure 13):
• at least 3" and at most 12" out from the wall (see Figure
14), following the vent manufacturer's instructions.
• at least 12" above finished grade or the normally
expected snow accumulation level, whichever is higher
4' Min.
Vent
Termination
1' Min.
Material Type
Metal
Metal
Metal
14
Max 12"
Min 3"
Vent
Termination
At least 7'
above grade
adjacent
to public
walkways
Sealant
Consult Manufacturer
Consult Manufacturer
G.E. RTV 106