6
RPV-I&S
NOTE:
When using 3"
(7.6 cm)
PVC, use a 3"
(7.6 cm)
to 2"
(5.1 cm)
reducer and exit the building wall with 2"
(5.1 cm)
PVC using the 2"
(5.1 cm)
45° vent terminal supplied. Two 45° elbows are equivalent
to one 90° elbow. Each 90° elbow is equivalent to 5 feet
(1.5 m)
of
straight vent pipe.
NOTE:
ABS or CPVC pipes may be substituted for PVC pipe. Do not
mix ABS and PVC pipe in the same installation.
THROUGH THE WALL VENTING:
Cut a 2 ½ inch
(6.4 cm)
diameter hole in the wall at the point where the vent
connector is going to pass through the wall. Use the proper cement to secure
the 45° vent terminal provided with the water heater to the vent connector. The
distance between the edge of the 45° vent terminal and the exterior wall (see
Figure 8) must be at least 1 inch
(2.5 cm)
. Use the proper cement and
assembly procedures to secure the vent connector joints between the terminal
and the blower outlet. Provide support brackets for every 3 feet
(0.91 m)
of
horizontal vent.
THROUGH THE ROOF VENTING: (VERTICAL VENTING)
Cut the necessary holes through the roof and ceiling and install the vent
connector as shown in (Figure 9). Make sure that the installation meets the
local codes and/or The National Fuel Gas Code ANSI Z223.1 (Latest Edition) or
CGA/CAN B149 Installation Code.
THROUGH THE WALL VENTING WITH LOW GROUND CLEARANCE:
When venting cannot exit through the wall at a height greater than or equal to
12"
(30.5 cm)
from the ground or from the anticipated snow level, then the
installation must be modified as shown below see Figure 10. Refer to Table 9
for maximum venting lengths using 2"
(5.1 cm)
PVC or Table 10 for maximum
lengths using 3"
(7.6 cm)
PVC.
Figure 10
Figure 6
IMPORTANT
All of the Venting connections must be leak checked with a soap and water
solution upon initial start up of the water heater. Any leaks must be repaired
before continuing operation of the water heater.
Figure 7
Figure 9
Figure 8
TABLE - 8
VENT CONNECTOR LENGTHS FOR 3"
(7.6 cm)
DIAMETER PVC
Terminating # of 90° Elbows Maximum Minimum
(excluding vent Length Length
terminal)
Through the Wall
0
105 ft
(32.0 m)
10 ft
(3.1 m)
Through the Wall
1
1100 ft
(30.5 m)
10 ft
(3.1 m)
Through the Wall
2
95 ft
(29.0 m)
10 ft
(3.1 m)
Through the Wall
3
90 ft
(27.5 m)
10 ft
(3.1 m)
Through the Wall
4
85 ft
(26.0 m)
10 ft
(3.1 m)
Through the Wall
5
80 ft
(24.4 m)
10 ft
(3.1 m)
Through the Roof
0
55 ft
(16.8 m)
5 ft
(1.5 m)
Through the Roof
1
50 ft
(15.3 m)
5 ft
(1.5 m)
Through the Roof
2
45 ft
(13.7 m)
5 ft
(1.5 m)
Through the Roof
3
40 ft
(12.2 m)
5 ft
(1.5 m)
Through the Roof
4
35 ft
(10.7 m)
5 ft
(1.5 m)
Summary of Contents for RPV-I&S
Page 10: ...10 RPV I S Figure 11 ...
Page 11: ...11 RPV I S Figure 12 ...
Page 16: ...16 RPV I S Printed in USA ...
