Direct Vent - Vertical Concentric - Weil-McLain Eco Tec 2 Series Manual

ECO ® Tec series 2 gas-fired water boiler – boiler manual
DIRECT VENT —
Allowable vent/air pipe materials &
lengths
1. The concentric termination kit must be purchased
separately.
Use only the vent materials and kits listed in
Figure 27, page 23. Provide pipe adapters if
specified.
2. Locate the termination such that the total air piping and
vent piping from the boiler to the termination will not
exceed the maximum length given in Figure 26, page 22.
3. This termination requires a 45-degree elbow that is not
supplied with the termination kit. The maximum vent/
air pipe lengths include allowance for this elbow.
For polypropylene applications, See venting
and air piping notes on page 21.
For AL29-4C vent pipe applications,
See venting and air piping notes on page 21.
Determine termination location
Locate the concentric vent/air termination using the
following guidelines:
1. The concentric vent/air assembly must terminate as
shown in Figure 46, page 37
2. The termination must comply with the clearances and
limitations shown in Figure 28, page 25.
3. Locate the termination so it is not likely to be damaged
by foreign objects, such as stones or balls, or subject to
buildup of leaves or sediment.
4. For Canadian installations, follow requirements of CSA
B149.1 or B149.2 Installation Code and a ULC S636
compliant vent kit.
Multiple vent/air terminations
1. When terminating multiple boilers, install the
concentric vent/air termination assemblies as described
in this manual.
All vent outlets must terminate at the same
height to avoid possibility of severe personal
injury, death or substantial property damage.
2. Place roof penetrations to obtain minimum clearance
of 12 inches between the edges of adjacent vent pipes
of other boilers for U. S. installations (see Figure 45).
3. For Canadian installations, provide clearances
required by CSA B149.1 or B149.2 Installation Code
and a ULC S636 compliant vent kit.
4. The air inlet of a boiler is part of a direct vent
connection. It is not classified as a forced air intake with
regard to spacing from adjacent boiler vents.
Prepare roof penetrations
1. Roof penetration hole:
a. Cut a clearance hole to clear the termination outside
diameter as prescribed in the kit instructions.
b. Insert a corrosion resistant metal thimble in the
vent pipe hole.
36
Vertical concentric
Figure 44
Step 1 Read and follow all instructions in this manual. DO NOT
proceed with vent/air installation until you have read
page 20 through page 26.
left and page 21.
Step 2 Install the boiler in a location that allows proper routing of all vent
and air piping to the selected sidewall location.
Step 3 Make sure the selected vertical termination location complies with
Figure 28, page 25. (Multiple boiler concentric terminations must
also comply with Figure 45, page 37.)
Step 4 Use only the vent materials listed in Figure 27, page 23. Provide
pipe adapters where required.
Step 5 Vent piping and air piping lengths must not exceed the values
shown in Figure 26, page 22.
Step 6 The concentric termination must be assembled and installed
before piping from the boiler to the termination.
Step 7 Prepare the vertical penetration(s) — assemble the concentric
termination kit and secure the penetration components as
instructed in this section. Provide the supports indicated and
mount the termination assembly. See "Prepare roof penetrations"
on page 36 and "Mount concentric termination" on page 37.
Step 8 Install vent and air piping between the boiler and the concentric
vent/air termination. Slope horizontal piping downward toward
the boiler at least 1/4 inch per foot. See page 27 for general
guidelines.
Step 9 Install pipe supports every 5 feet on both the horizontal and
vertical runs.
Step 10 Install a hanger support within 6 inches of any upturn in the
piping.
INSTALLATION SEQUENCE
See notices at left and page 21.
See notices at left and page 21.
See notices at left and page 21.
USE SWEEP ELBOWS FOR A LL VENT A ND A IR
PIPING — DO NOT use short radius elbows for vent
or air piping. Boiler performance could be affected.
— Concentric vertical
See notices at
Part number 550-100-270/0122