Instructions / Assembly

2 www.eccomfg.com ECCO Manufacturing™
Rev. 1
Read through all of these instructions before beginning your
installation. Failure to install as described in these instructions
will void the manufacturer’s warranty and may have an effect on
insurance and UL listing. Keep these instructions for future reference.
General
Type B Gas Vents are for venting listed Natural Gas or Liquid
Propane Category I appliances only. ECCO Type B Gas Vent
Systems may be used on other gas-burning appliances,
providing the appliance is certified for use with Type B Gas
Vent, the installation conforms to the appliance manufacturer’s
certified installation instructions, and the installation is
acceptable to the requirements of the local authority having
jurisdiction. Do not use Type B Vents for Category II, III, or IV gas
appliances. Type B Vent shall not be used to vent flue products
from incinerators, combination gas/oil appliances, oil-fired, or
woodburning appliances. The vent should always be sized for
the sea-level name plate input rating of appliances in accordance
with the procedures set forth in the Gas Vent Capacity Tables,
which appear in the NFPA 54 (USA) or CAN/CGA-B-149.1
(Canada). If there is a question about the use of Type B Gas Vents,
contact the appliance manufacturer, the local authority having
jurisdiction, or ECCO Manufacturing™ for further information.
Planning
1) Appliances
Carefully review the appliance manufacturer’s installation
instructions for positioning the unit, any special venting or
connector requirements, and verify that it is a Category I appliance
or an appliance that requires the use of Type B gas vent.
2) Placement
The placement of the vent and fittings must be in accordance
with local codes, as well as accepted venting practices. If more
than one appliance is to be connected to one venting system, the
common vent must be correctly sized. It is a good idea to make a
sketch of the proposed installation, labelling the components you
will need. Adjustable pipe lengths are available to make up odd
lengths. Minimize the number of turns and lateral runs, as the
National Fuel Gas Code places limitations on these. A 45° turn is
preferable to a 90° turn. The appliance reference material should
be consulted at this time, as well as any local authority having
jurisdiction. In most localities, building permits are required for
any new appliances, or modifications to existing venting systems.
3) Figure 1
Shows layout of typical residential installation.
4) Clearance to Combustibles
A 1-inch clearance (air space) to combustible materials must
be maintained, when using ECCO Type B Vent, regardless of the
pipe diameter.
5) Combustion Air
Refer to appliance installation instructions and local building
codes to ensure compliance with required volume of
combustion air for each appliance installed .
6) Slope
If the venting system contains lateral (horizontal) components,
they shall be positioned so they have an upwards slope away
from the appliance of not less than 1/4" rise per foot of run.
(Horizontal vent installed in attics, unconditioned area, or
between floors have further restrictions. Please consult your
local building codes for specific limitations.)
7) Termination Area
Examine the area where the vent system will terminate. The
height of the termination above the roof is determined by
the roof pitch, and also its proximity to adjacent walls or
obstructions.
All gas vent caps up to 8 inches in internal diameter have
been investigated for wind effects and are for installation on
compatible listed systems, terminating a sufficient distance
from the roof so that no discharge opening is less than 2 feet
horizontally from the roof surface, and the lowest discharge
opening will be no closer than the minimum height specified
below. These minimum heights may be used provided that the
vent is not less than 8 feet from any vertical wall. Consult Table 1.
See
Table 1
RAINCAP (HIGH WIND)
Figure 1