Tempstar F8MTL, Руководство по установке

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Specifications are subject to change without notice.
APPLIANCE APPLICATION REQUIREMENTS
Appliance operation has a significant impact on the
performance of the venting system. If the appliances are
sized, installed, adjusted, and operated properly, the venting
system and/or the appliances should not suffer from
condensation and corrosion. The venting system and all
appliances shall be installed in accordance with applicable
listings, standards, and codes.
The furnace should be sized to provide 100% of the design
heating load requirement plus any margin that occurs
because of furnace model size capacity increments. Heating
load estimates can be made using approved methods
available from Air Conditioning Contractors of America
(Manual J); American Society of Heating, Refrigerating, and
Air − Conditioning Engineers; or other approved engineering
methods. Excessive over − sizing of the furnace could cause
the furnace and/or vent to fail prematurely. When a metal vent
or metal liner is used, the vent must be in good condition and
be installed in accordance with the vent manufacturer’s
instructions.
When a metal vent or metal liner is used, the vent must be in
good condition and be installed in accordance with the vent
manufacturer’s instructions.
To prevent condensation in the furnace and vent system, the
following precautions must be observed:
1. The return − air temperature must be at least 60 F
(15 C) db except for brief periods of time during
warm − up from setback at no lower than 55 F (13 C)
db or during initial start − up from a standby condition.
2. Adjust the gas input rate per the installation
instructions. Low gas input rate causes low vent gas
temperatures, causing condensation and corrosion in
the furnace and/or venting system. Derating is
permitted only for altitudes above 2000 ft
3. Adjust the air temperature rise to the midpoint of the
rise range or slightly above. Low air temperature rise
can cause low vent gas temperature and potential for
condensation problems.
4. Set the thermostat heat anticipator or cycle rate to
reduce short cycling.
Air for combustion must not be contaminated by halogen
compounds which include chlorides, fluorides, bromides, and
iodides. These compounds are found in many common home
products such as detergent, paint, glue, aerosol spray,
bleach, cleaning solvent, salt, and air freshener, and can
cause corrosion of furnaces and vents. Avoid using such
products in the combustion − air supply. Furnace use during
construction of the building could cause the furnace to be
exposed to halogen compounds, causing premature failure of
the furnace or venting system due to corrosion.
Vent dampers on any appliance connected to the common
vent can cause condensation and corrosion in the venting
system. Do not use vent dampers on appliances common
vented with this furnace.
ADDITIONAL VENTING REQUIREMENTS
A 4 in. (102 mm) round vent elbow is supplied with the
furnace. A 5 in. or 6 in. (127 or 152 mm) vent connector may
be required for some model furnaces. A field − supplied 4 in. to
5 in. (102 to 127 mm) or 4 in. to 6 in. (102 mm to 152 mm)
sheet metal increaser fitting is required when 5 in. or 6 in.
(127 or 152 mm) vent connector is used. See
Figure 35 − Figure 47 Venting Orientation for approved vent
configurations.
See Venting Notes after orientation figures.
Figure 35 − Upflow Application − Vent Elbow Up
SEE NOTES: 1,2,4,7,8,9
on the page following
these figures
A03208
Figure 36 − Upflow Application − Vent Elbow Right
SEE NOTES: 1,2,3,4,7,8,9
on the pages following
these figures
A03209