Lochinvar EnergyRite ER302 - Manual (Page 14)

Installation & Operation Manual
14
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General venting
Vent connection is made directly to the flue outlet connection
on the pool heater. No additional draft diverter or barometric
damper is required on single unit installations when a negative
draft is maintained within the specified range. The connection
from the pool heater’s vent to the stack must be made as direct
as possible.
Barometric damper location
The preferred location for the barometric damper (if required)
is in a tee or collar installed in the vertical pipe, rising from the
pool heater’s flue outlet. The barometric damper must not be
installed in a bullhead tee installed on the unit’s flue outlet. The
tee or collar containing the barometric damper should be
approximately three feet vertically above the connection to the
unit’s flue outlet. This location ensures that any positive velocity
pressure from the unit’s internal combustion fan is dissipated
and the flue products are rising due to buoyancy generated from
the temperature of the flue products. Adjust the weights on the
damper to ensure that draft is maintained within the specified
range.
Examine the venting system at least once a
year. Check all joints and vent pipe
connections for tightness. Also check for
corrosion or deterioration. Immediately
correct any problems observed in the venting
system.
NOTICE
Outdoor installation
Units are self venting and can be used outdoors when installed
with the factory supplied outdoor vent cap. The outdoor vent
cap is mounted directly to the rear of the pool heater as shipped
from the manufacturer and covers the flue outlet and
combustion air inlet openings on the jacket. No additional vent
piping is required.
ƽ WARNING
The flue products discharged from the flue
outlet on the outdoor vent cap may be very
hot. Avoid touching or other direct contact
with the flue gases or the vent cap assembly.
These components are hot and direct
contact can result in burns.
ƽ WARNING
Outdoor models must be installed outdoors
and must use the outdoor vent cap assembly
supplied by the manufacturer. Personal
injury or product damage may result if any
other cap is used or if an outdoor model is
used indoors. All covers, doors, and jacket
panels must be properly installed to ensure
proper operation and prevent a hazardous
condition.
ƽ CAUTION
Pool heaters which are shut down or will not
operate may experience freezing due to
convective air flow in the outdoor vent cap
installed on the unit. If operated in cold
climates, continuous pump operation is
recommended to help prevent freezing of
pool water in an outdoor installation. 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.
Combustion air supply must be free of contaminants (see
Combustion and Ventilation Air Requirements in the Determine
Pool Heater Location section). To prevent recirculation of the
flue products into the combustion air inlet, follow all
instructions in this section.
The venting areas must never be obstructed. Keep area clean
and free of combustible and flammable materials. Maintain a
minimum clearance of 3 inches to combustible surfaces and a
minimum of a 3 inch clearance to the air inlet. To avoid a
blocked air inlet or blocked flue condition, keep the outdoor cap
air inlet, flue outlet and drain slot clear of leaves, debris, snow,
ice, etc.
A pool heater should not be located so that high winds can
deflect off of adjacent walls, buildings, or shrubbery causing
recirculation. Recirculation of flue products may cause
operational problems, bad combustion or damage to controls.
The pool heater should be located at least 3 feet from any wall or
vertical surface to prevent adverse wind conditions from
affecting performance.
General
Vent installations for connection to gas vents or chimneys must
be in accordance with “Venting of Equipment”, of the latest
edition of the National Fuel Gas Code, ANSI Z223.1, in Canada,
the latest edition of CAN/CGA - B149 Installation Codes for Gas
Burning Appliances and Equipment or applicable provisions of
the local building codes.
Conventional negative draft venting and sidewall venting
applications, where outside air is used, must have adequate
combustion and ventilation air supplied to the equipment room
in accordance with the latest edition of the National Fuel Gas
Code, ANSI Z223.1, in Canada, the latest edition of CAN/CGA
- B149 Installation Codes for Gas Burning Appliances and
Equipment, or applicable provisions of the local building codes.
The distance of the vent terminal from adjacent buildings,
windows that open and building openings, MUST comply with
the latest edition of the National Fuel Gas Code, ANSI Z223.1,
in Canada, the latest edition of CAN/CGA - B149 Installation
Codes for Gas Burning Appliances and Equipment.