Noritz EZ98DV - Page 25

25
For Horizontal Vent Termination - PVC/CPVC Material Only
• Use a condensation drain if necessary.
• In the Commonwealth of Massachusetts a carbon monoxide detector is required for all side wall horizontally
vented gas fuel equipment.
Possible Orientations
≥ 3ft Min.
3 in. (75 mm) pipe and 2 in. × 3 in.
Increaser couplings required
when using plastic horizontal
hood terminations (part #PVT-HL).
Increaser couplings must be
installed just above the heaters
vent flue connections.
Slope the horizontal exhaust vent
1/4 in. upwards for every 12 in.
(305 mm) toward the termination.
12 in. (305 mm) above
gr
ade or over
maximum snow leve
l
12 in. (305 mm) above
grade or over
maximum snow level
Ceiling
Interior Wall
(e.g. PVT-HL installation)
(e.
g. PVT-HL installation)
(e.
g. PVT-2LPT installation)
Exhaust
3 in. (75 mm) or
2 in. (50 mm)
Intake
3 in. (75 mm) or
2 in. (50 mm)
Intake*
Intake
Overhang
Exhaust*
Exhaust
PVC-2LPT
or
PVC-3LPT
Exterior Wall
If 3 ft (0.9 m) distance between Intake and Exhaust cannot be
ensured, the installation can be carried out only in the installation
method shown in “Alternate Horizontal Vent Te rmination”.
The PVC/CPVC elbow may be used in place of
PVT-HL as the horizontal vent termination.
PVT-HL
3 in. (75 mm)
* When choosing intake and exhaust terminations, you
must use the same type of elbow (i.e. both 90° elbows).
This will help with proper combustion by putting both
terminations in the same pressure zone.
Hanger Straps
≥ 12 in. (305 mm) Min.
6.4.2 Horizontal Vent Termination
Venting the Water Heater