Filter
Top Products
15
Installing the New Water Heater (cont'd)
VENTING SYSTEM EXAMPLE INSTALLATIONS FOR
ALL MODELS
The vent piping cannot under any circumstances be run
downhill.
The vent piping can be installed as follows:
1.Horizontal runs require a minimum
1
/
8
″ rise per five feet.
3 ELBOW
EXAMPLE
MIN. RISE
1
⁄8″
PER FIVE FEET
MIN. RISE
1
⁄8″
PER FIVE FEET
3 ELBOW
EXAMPLE
*NOTE: Two 45˚ elbows are equivalent to one 90° elbow.
One 90˚ elbow equals 5 feet of equivalent vent length.
MIN. RISE
1
⁄8″
PER FIVE FEET
13
1
⁄4
″ MIN.
11
1
⁄
4
″ MIN.
45′ MAX.
18″ MIN.
ONE ELBOW
MIN. RISE
1
⁄8″
PER FIVE FEET
MIN. RISE
1
⁄8″
PER FIVE FEET
MIN. RISE
1
⁄8″
PER FIVE FEET
CAULK
JOINT
3 ELBOW
EXAMPLE
2.
The total vertical and horizontal vent runs cannot exceed
the maximum length with the number of 90˚ elbows as
specified in the table below. If more elbows are required,
the venting distance must be reduced 5 feet for every 90°
elbow:
3″ DIA. VENTS NUMBER OF 90˚ DEG.
MAX. LENGTH (FT.) ELBOWS*
45 1
40 2
35 3
1 ELBOW
EXAMPLE
1 ELBOW
EXAMPLE
7″
38′
3.Minimum vent length for all models is 18 inches.