Lochinvar EnergyRite ER202 Installation & Operation Manual page 23

4
Vertical venting
DIRECTAIRE VENT KITS
Model Conventional
Number Vent Flue Size
ER152 5"
ER202 5"
ER252 6"
ER302 6"
ER402 6"**
*Minimum diameter, installer may increase diameter one pipe size
for ease of installation if needed.
**On the ER402 model you MUST have at least 8 feet of vertical
vent to use a 6" vent , if less than 8 feet the vent size must increase
to 7".
The air inlet cap supplied in the DirectAire
⚠ CAUTION
Vertical Vent kit is used to supply combustion
air to a single pool heater. The rooftop vent
cap for flue products should be a standard
commercial cap purchased locally. The use of a
sidewall or rooftop air inlet cap other than the
manufacturer's recommended cap for single pool
heater installations or use of a common air inlet
cap for multiple pool heaters with insufficient
free area and/or protection from wind and
weather may result in operational problems with
the pool heater or potentially hazardous spillage
of flue products which can cause personal injury,
death, or property damage.
Venting of flue products
For venting of flue products vertically to the outdoors, follow all
requirements in the Conventional Venting section.
The termination point for the flue products must follow the
clearance requirements in the Vertical Venting Termination section.
A barometric damper is NOT required in the flue on DirectAire
Vertical installations if the draft is within the negative 0.02 to 0.08
inches water required for proper operation. If the draft exceeds this
range, a barometric damper MUST be installed.
(continued)
TABLE - 4A
DirectAire
Air Inlet
w/rooftop
Pipe*
air inlet
4" 100172053
4" 100172053
5" 100172054
5" 100172055
5" 100172055
⚠ CAUTION
DirectAire
w/sidewall
vent cap
100172050
100172050
100172051
100172052
100172052
Installation & Operation Manual
Pool heaters which are shut down
or will not operate may experience
freezing due to convective air flow
in the air inlet pipe connected to the
unit. If operated in cold climates,
continuous pump operation is
recommended to help prevent
freezing of pool water on DirectAire
systems. Proper freeze protection
must be provided. A pool heater
that is not in use in the winter
season must be properly drained
and winterized. See the Winterizing
section of the EnergyRite Service
Manual.
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