HHP PBNU-LD06P040 Manual de instruções de instalação - Página 6

Procurar online ou descarregar pdf Manual de instruções de instalação para Forno HHP PBNU-LD06P040. HHP PBNU-LD06P040 20 páginas. Gas-fired furnaces high-efficiency upflow condensing models

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When the furnace is used in conjunction with a cooling coil, the

furnace must

installed parallel with or on the upstream side

of the cooling unit to avoid condensation in the primary heat

exchanger. When a parallel flow arrangement is used, the

_dampers or other means used jo control air flow shall be

adequate to prevent chilled air from entering the furnace, and

if manually operated, must be equipped with means to prevent

operation of either unit unless the damper is in the full heat or

cool position.

The furnace shall

located:

Where a minimum amount of air intake/vent piping and

elbows will be required.

2. As centralized with the air distribution as possible.

han area where ventilation facilities provide for safe limits

of ambient temperature under normal operating condi

tions. Ambient temperatures must not fall below 32°F (0° C).

Where it will not interfere with proper air circulation in the

confined space.

Where the outdoor combustion air/vent terminal will not

blocked or restricted.

Where it will not interfere with the cleaning, seNicing or

- removal of other appliances.

COMBUSTION AIR A ND VENT S YSTEM

This furnace requires outdoor combustion air. Two separate,

properly-sized pipes must be used; one bringing outdoor air

from the accessory terminal kit outdoors to the furnace com

bustion air intake (top of unit), and one from the furna � e vent

connection (left or right side of unit) back to the termmal ktt

located outdoors.

The vent terminal kit should be located either through the wall

(horizontal or side vent) or through the roof (vertical vent). Care

should be taken to locate side vented systems where trees or

shrubs will not block or restrict supply air from entering or

combustion products from leaving the terminal. Also, the termi

nal assembly should be. located as far as possible from a

swimming pool or a location where swimming pool chemicals

might be stored. Be sure the terminal assembly follows the

outdoor clearances listed in the following table for U.S. instal

lations: In Ca

ada, refer to CAN/CGA-B 149.1 or .2 Installation

9ode (latest edition -Venting Sys�ems and Air supply).

VENT TERMINATION (U.S. ONLY)

D ry er Vent

............................. ......... . ........... ..............

Plum bing Vent Stack

.. ....

From any opening where vent

Above grade and anticipated

Above �rade when adjacent to

From electric, gas meters, regulators and rehef

equipll } ent - min. horizontal distance .

NOTE:

Consideration must

materials by flue gases.

4 feet

feet

......

.. ..

...... ....

. .......

. .

feet

...

given for degradation of building

Sizing.·

UNIT INSTALLATION

DUCTWORK

The duct system's design and installation must:

Handle an air volume appropriate for the seNed space and .

wit . hin the opera.ting parameters of the furnace specifica

tions.

2. Be installed in accordance with standards of NFPA (Na·

tiona! Fire Protection Association) as outlined in NFPA

pamphlets 90A and 90B or applicable national, provincial,

local fire and safety codes.

Create a closed duct system. The supply duct system must

be connected to the furnace outlet and the return duct

system must be sealed to the furnace inlet casing. Both

supply and return duct systems must terminate outside the

space containing the furnace.

Generally complete a path for heated or cooled. air to

circulate through the air condition�ng and heating equip

ment and to and from the conditioned space.

NOTE:

The supply air temperature differential between the

side discharge versus front to back discharge is substan

tial./! is recommended that whenever possible position the

furnace so left and right side supply air is dominate.

After the unit is in the desired position, fasten the supply

ductwork to the furnace duct flanges. A removable access

panel should

provided in the outlet duct such that smoke or

reflected light would be obseNable inside the casing to indicate

the presence of leaks in the heat exchanger. This access cover

shall be attached in such a manner as to prevent leaks. Flexible

duct connectors are recommended to connect both the supply

and return ducts to the furnace.

Return air ductwork may be connected to an upflow furnace in

one of the following two ways:

1. Bottom Return - Before attaching the ductwork to the

furnace bottom, see the "Filters• section of this instruction.

2. Side Return - Cut a hole in the side panel of the furnace

using the right-angle markings (See Figure 1) as a guide

for position and size of the opening. Install a single side

return filter ·frame accessory if one is required. If this

accessory is not needed, the ductwork can

directly to the fumace opening.

NOTE:

Some accessory side filter packages require cutting

slightly larger opening.

CORNER

M.'.FU<INGS

FIGURE

-SIDE RETURN CUTOUT MARKINGS

fastened