Flue Pipe And Condensate Drainage; Indoor Humidity - Amana GULA User's Information Manual

Flue Pipe and Condensate Drainage

To prevent possible death or personal injury due to
asphyxiation, Amana Condensing Gas Fired Warm
Air Furnaces must be Category IV vented.
The venting of this furnace (Category IV venting) must
be both gas and water tight. For proper performance,
the size, length, number of elbows, and termination must
be in accordance with the specifications outlined in the
furnace installation guide. The flue system must slope
towards the furnace for proper condensate drainage.
The flue pipe and its termination must be kept clear of
blockage. For further information on Category IV vent-
ing, refer to the installation instructions accompanying
this product. If not included, ask your installing dealer or
distributor for this information.
Provisions must be made to drain condensate from the
furnace and protect the condensate drain trap and drain
lines from freezing conditions. The drain trap and drain
lines must be kept clear of blockage.
General Information
WARNING

Indoor Humidity

Relative humidity is the amount of water vapor in the air
relative to the amount the air can hold at the same
temperature. Example: At 40% relative humidity, the air
could hold 2 1/2 times as much moisture (2.5 x 40 =
100%) before becoming saturated.
The colder the air; the less moisture it can hold. As air is
warmed, its ability to hold moisture is increased.
Example: A winter day, outdoor temperature 10°F, and
relative humidity of 70%. If that air enters a home and is
warmed to 72°F the relative humidity will drop to 6%
(very dry) if no more moisture is added.
Relative humidity is important to your health and home
as proper humidification helps reduce respiratory difficul-
ties and helps improve the indoor air quality.
A good relative humidity is one just high enough to barely
start condensation along the lower edges or lower
corners of the windows. More than that can be damag-
ing.
Frequent fogging or excessive condensation on inside
windows indicates the indoor humidity level is too high for
outdoor weather conditions. Damage to the building may
result if the condition persists. (Condensation on inside of
storm windows indicates loose inside windows. Adding
weather-stripping to tighten inside windows usually
corrects this problem.)
The following table shows the recommended maximum
indoor humidity in relationship to the outdoor tempera-
tures.
Temperature
(° F.)
+20°
+10°
0°
-10°
-20°
7
Humidity
35%
30%
25%
20%
15%
Table 1