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Caution, Warning, Air for combustion and ventilation – Bryant Series E/F 310AAV User Manual

Page 7

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7

PERSONAL INJURY AND/OR PROPERTY

DAMAGE HAZARD
Failure to follow this caution may result in furnace

component damage.
This gas furnace may be used for heating buildings under

construction provided that:
--The furnace is permanently installed with all electrical

wiring, piping, venting and ducting installed according to

these installation instructions. A return air duct is provided,

sealed to the furnace casing, and terminated outside the

space containing the furnace. This prevents a negative

pressure condition as created by the circulating air blower,

causing a flame rollout and/or drawing combustion

products into the structure.
--The furnace is controlled by a thermostat. It may not be

hot wired to provide heat continuously to the structure

without thermostatic control.
--Clean outside air is provided for combustion. This is to

minimize the corrosive effects of adhesives, sealers and

other construction materials. It also prevents the

entrainment of drywall dust into combustion air, which can

cause fouling and plugging of furnace components.
--The temperature of the return air to the furnace is

maintained between 55_F (13_C) and 80_F (27_C), with

no evening setback or shutdown. The use of the furnace

while the structure is under construction is deemed to be

intermittent operation per our installation instructions.
--The air temperature rise is within the rated rise range on

the furnace rating plate, and the gas input rate has been set

to the nameplate value.
--The filters used to clean the circulating air during the

construction process must be either changed or thoroughly

cleaned prior to occupancy.
--The furnace, ductwork and filters are cleaned as necessary

to remove drywall dust and construction debris from all

HVAC system components after construction is completed.
--Verify proper furnace operating conditions including

ignition, gas input rate, air temperature rise, and venting

according to these installation instructions.

CAUTION

!

18-IN. (457.2 mm)

MINIMUM TO BURNERS

A93044

Fig. 5

--- Installation in a Garage

FIRE HAZARD
Failure to follow this warning could result in personal

injury, death and/or property damage.
Do not install the furnace on its back or hang furnace with

control compartment facing downward. Safety control

operation will be adversely affected. Never connect

return--air ducts to the back of the furnace. (See Fig. 6.)

!

WARNING

A02054

Fig. 6

--- Prohibit Installation on Back

LOCATION RELATIVE TO COOLING EQUIPMENT
The cooling coil must be installed parallel with, or on the

downstream side of the unit to avoid condensation in the heat
exchangers. When installed parallel with the furnace, dampers or

other flow control must prevent chilled air from entering the
furnace. If the dampers are manually operated, they must be

equipped with means to prevent operation of either unit unless

the damper is in the full--heat or full--cool position.

AIR FOR COMBUSTION AND

VENTILATION

Provisions for adequate combustion, ventilation, and dilution air

must be provided in accordance with:

S

Section 9.3 of the NFPA 54 / ANSI Z223.1--2009, Air
for Combustion and Ventilation, and applicable provi-

sions of the local building codes.

FURNACE CORROSION HAZARD
Failure to follow this caution may result in furnace damage.
Air for combustion must not be contaminated by halogen

compounds, which include fluoride, chloride, bromide, and

iodide. These elements can corrode heat exchangers and

shorten furnace life. Air contaminants are found in aerosol

sprays, detergents, bleaches, cleaning solvents, salts, air

fresheners, and other household products.

CAUTION

!

310AA

V