LAARS NeoTherm NTV1000 - Install and Operating Manual - Manual (Page 14)

LAARS Heating Systems
Page 10
The condensate drain must be installed so as to
prevent the accumulation of condensate. When
a condensate pump is not used, the tubing must
continuously slope downward toward the drain with
no spiraling.
Consult local codes for the disposal method.
Caution
Condensate is mildly acidic (pH=5), and may
harm some floor drains and/or pipes, particularly
those that are metal. Ensure that the drain,
drainpipe, and anything that will come in
contact with the condensate can withstand the
acidity, or neutralize the condensate before
disposal. Damage caused by failure to
install a neutralizer kit or to adequately treat
condensate will not be the manufacturer’s
responsibility.
3.2.3 Venting requirements Unique to
Canada
NeoTherm boilers and water heaters are Vent
Category IV appliances. Per the requirements of
CAN/CSA-B149.1, only BH vent systems can be
connected to these units and such vent systems,
either ULC S636 certified stainless steel or other
ULC S636 certified BH vent (eg. plastics) must
be installed per the vent manufacturer’s certified
installation instructions.
It is the responsibility of the appropriately licensed
technician installing this NeoTherm unit to use
ULC S636 certified vent material consistent with
the requirements as described in the Venting and
Combustion Air section.
Flue Gas Sampling Port -
It is also the responsibility of the installer to ensure
that a flue gas sampling port is installed in the vent
system. This flue gas sampling port must be installed
near the flue connection of the NeoTherm unit:
within 2 feet of the flue connection. There is no flue
gas sampling port internal to the NeoTherm, so one
must be installed in the vent system external to the
NeoTherm unit. A flue gas sampling port available
as a component of the ULC S636 certified vent
system is preferred. However, if one is not available
with the certified vent system, Laars suggests using
a tee with the branch connection sized to allow for
insertion of a flue gas analyzer probe. The branch
connection must be resealable with a cap or other
means to ensure the vent system remains sealed.
(See Fig. 7.)
Consideration must be given to the placement
and orientation of the flue gas sampling port to
ensure that condensate is free to flow back into the
NeoTherm unit and not collect anywhere in the vent
system - including in the flue gas sampling port.
Exhaust Vent Terminal -
An exhaust vent terminal must be installed. If an
exhaust vent terminal is not available with the
certified vent system, Laars suggests the use of a
coupler fitting from the certified vent system into
which the vent terminal screen can be installed.
Be sure to install and terminate both vent and
combustion air pipes per the instructions in this
section.
3.3 locating the Vent and Combustion
air terminals
3.3.1 Side Wall Vent terminal
The appropriate Laars side wall vent terminal must
be used. The terminal must be located in accordance
with ANSI Z223.1/NFPA 54 and applicable
local codes. In Canada, the installation must be
in accordance with CSA B149.1 or .2 and local
applicable codes.
Consider the following when installing the terminal:
1. Figure 8 shows the requirements for
mechanical vent terminal clearances for the
U.S. and Canada.
fig. 7 - test Port