Engineered air DJ Series User Manual download pdf (Page 6)

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ASSEMBLING THE UNIT:

If the unit is split and shipped in sections, the sections must be field assembled into one piece. All

sections are pre-drilled for assembly. The bolts, nuts and washers are packed in one of the

sections. Align the sections, loosely assemble all the bolts and nuts, and then tighten. Caulk split

lines on outdoor units. The inlet hood is designed for field installation. Connect the hood on the

support flange and attach with self tapping sheet metal screws.

VENTING PRODUCTS OF COMBUSTION

Installation must be in accordance with the requirements of authorities having jurisdiction. Heaters

must be provided with sufficient combustion air and located in an area where a negative pressure

will not be created to starve the burner of combustion air.

All indoor PACK units must be installed with a flue connection to the outside of the building. In order

to obtain satisfactory combustion, a combustion air inlet vent should be installed from the outside

of the building to the equipment room.

NOTE:

A) INDOOR

(a) Each furnace is equipped with a built in draft diverter. Consequently, an external draft

diverter should not be installed in the flue connection.

(b) The flue vent connection should be made into a permanent chimney or through a roof vent

of approved design. The roof vent should extend at least 2 fee (600mm) above any

obstruction within 10 feet (3m) of the outlet.

(d) If the PACK unit is installed in a space served by a large exhaust fan or in conjunction with

other equipment requiring a large amount of combustion air, take care that a negative

pressure is not affecting the draft of the furnaces. Where a negative pressure is causing a

down draft, a power venter should be equipped on each furnace. Wher negative pressure

is severe, make up air equipment may be required. (Consult an Engineered Air

representative).

(e) Where it is necessary to use a long run of vent pipe, or where the vent pipe is exposed to

cold air, condensation within the flue may occur. There are two ways to overcome this

problem:

(1) Prevent condensation by insulating the pipe so that the temperature of the flue

products never drops below 250

F (121

C).

(2) Provide a trap for collecting the condensate before it can enter the heater.

(f) Indoor units with flue exhauster may be vented out the side wall.

B) OUTDOOR

Gravity vent caps are supplied by Engineered air and must be field installed and held in place

with sheet metal screws.

Gravity Vent Cap Extension (Figures 1 and 2)

1 2 3 4 5 6 7 8 9 10 11 ... 19 20

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Engineered air DJ Series User Manual Page 6