Ventilation Air; Venting And Combustion Air Check; Vent Check; For Two Pipe Installation - Arcoaire N9MP1 Installation Instruction

Ventilation Air

Some provincial codes and local municipalities require ventilation
or make--up air be brought into the conditioned space as
replacement air. Whichever method is used, the mixed return air
temperature across the heat exchanger MUST not fall below 60°
so that flue gases will not condense excessively in the heat
exchanger. Excessive condensation will shorten the life of the heat
exchanger and possibly void your warranty.

Venting and Combustion Air Check

Figure 7

Vent Check

Vent Pipe
Typical Gas
Water Heater
If flame pulls towards draft hood, this indicates sufficient
venting.
NOTE: When an existing Category I furnace is removed or
replaced, the original venting system may no longer be sized to
properly vent the attached appliances, and to make sure there is
adequate combustion air for all appliances, MAKE THE
FOLLOWING CHECK.
12
Draft Hood
Match
Specifications are subject to change without notice
WARNING
!
CARBON MONOXIDE POISONING HAZARD.
Failure to follow the steps outlined below for each
appliance connected to the venting system being
placed into operation, could result in carbon
monoxide poisoning or death:
The following steps shall be followed for each
appliance connected to the venting system being
placed into operation, while all other appliances
connected to the venting system are not in
operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal
pitch, as required in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 or CSA B149.1, Natural Gas and
Propane Installation Code and these instructions. Deter-
mine that there is no blockage or restriction, leakage,
corrosion and other deficiencies which could cause an
unsafe condition.
3. As far as practical, close all building doors and windows
and all doors between the space in which the appliance(s)
connected to the venting system are located and other
spaces of the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected
to the venting system. Turn on any exhaust fans, such as
range hoods and bathroom exhausts, so they are
operating at maximum speed. Do not operate a summer
exhaust fan.
6. Follow the lighting instructions. Place the appliance being
inspected into operation. Adjust the thermostat so
appliance is operating continuously.
7. Test for spillage from draft hood equipped appliances at
the draft hood relief opening after 5 minutes of main burner
operation. Use the flame of a match or candle. (Figure 7)
8. If improper venting is observed, during any of the above
tests, the venting system must be corrected in
accordance with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and
Propane Installation Code.
9. After it has been determined that each appliance
connected to the venting system properly vents when
tested as outlined above, return doors, windows, exhaust
fans, fireplace dampers and any other gas--fired burning
appliance to their previous conditions of use.

For Two Pipe Installation

This furnace can NOT be common vented or connected to any
type B, BW or L vent or vent connector, nor to any portion of a
factory--built or masonry chimney. If this furnace is replacing a
previously common-vented furnace, it may be necessary to resize
the existing vent and chimney to prevent oversizing problems for
the other remaining appliance(s). See "Venting and Combustion
Air Check" in this section. This furnace MUST be vented to the
outside.
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