Reznor SCE Unit Installation Manual Uživatelský manuál stáhnout pdf (Strana 8)

Form RZ-NA I-SCE, Page 8

• Minimum length between the

heater and the concentric

adapter box is 5 feet (1.5M).

Diameters of Outdoor

Concentric Pipes

4) Joints and Sealing

3) Pipe Length

and Diameter

Specific Venting Requirements

Vent Pipe

1) Type of Pipe

2) Venter Outlet and

Combustion Air Inlet

Model SCE heaters have both an inlet air and a venter outlet connection. Both are 6" diam-

eter for all sizes.

Combustion Air Pipe

• Sealed, single-wall galvanized pipe is recommended for combustion air.

• NOTE: If using 7" pipe on

Sizes 200-400 (see table

below), use a taper-type 6"

to 7" enlarger to attach the

vent pipe and a 7" to 6"

reducer to attach the

combustion air pipe.

Pipe diameter and length requirements listed for the indoor sections of pipe (between the

heater and the concentric adapter box) are in the table below. Vent pipe diameters and

maximum indoor vent lengths apply to both horizontal and vertical vents. Add all straight

sections and equivalent lengths for elbows. The total length of the straight sections and

elbows must not exceed the Maximum Length.

Pipe Diameter and

Maximum Pipe Length

Between the Heater and

the Concentric Adapter

Box

Taper-type

Reducer

Airflow

Taper-type

Enlarger

Airflow

9. Venting and

Combustion Air

(cont'd)

inches mm inches mm feet M feet M feet M

125

6 152 6 152 50 15 8 2.4 4 1.2

150

6 152 6 152 50 15 8 2.4 4 1.2

175

6 152 6 152 50 15 8 2.4 4 1.2

7 178 7 178 70 21 8 2.4 4 1.2

6 152 6 152 50 15 8 2.4 4 1.2

7 178 7 178 70 21 8 2.4 4 1.2

6 152 6 152 50 15 8 2.4 4 1.2

7 178 7 178 70 21 8 2.4 4 1.2

6 152 6 152 50 15 8 2.4 4 1.2

7 178 7 178 70 21 8 2.4 4 1.2

6 152 6 152 30 15 8 2.4 4 1.2

7 178 7 178 70 21 8 2.4 4 1.2

6 152 6 152 30 15 8 2.4 4 1.2

7 178 7 178 70 21 8 2.4 4 1.2

Equivalent Straight Length for a

200

225

250

45° Elbow

300

350

400

Pipe Diameter and Maximum Pipe Length from Heater to Concentric Adapter

Vent Pipe Inlet Air Pipe

Maxi mum

Length 90° Elbow

Pipe Diameter

SCE

All pipe is field supplied. Requirements are listed for both the vent pipe and the combustion

air inlet pipe.

• Vent pipe approved for a Category III appliance OR single-wall, 26-gauge or heavier

galvanized (or a material of equivalent durability and corrosion resistance) vent pipe is

required between the heater and the concentric adapter box.

• Double-wall (Type B) vent pipe is required for vent terminal section. The length of

vent pipe that extends through the box and runs concentric through the combustion air

pipe must be one-piece with no joints.

Provide pipes as specified in Requirement No. 1 and seal joints as follows:

• If using Category III

vent pipe run, follow the pipe manufacturer’s instructions for

joining and sealing Category III vent pipe sections.

• If using single-wall vent pipe run, secure slip-fit pipe connections using sheetmetal

screws or rivets. Seal all joints with aluminum tape or silicone sealant.

Venter Outlet Connection (diameter)

SCE 125 150 175 200 225 250 300 350 400

inches666666666

mm 152 152 152 152 152 152 152 152 152

Combus tion Air Inlet Connection (diameter)

SCE 125 150 175 200 225 250 300 350 400

inches666666666

mm 152 152 152 152 152 152 152 152 152

The diameters of the outside (terminal) concentric pipes are shown in the concentric box

connection illustrations in FIGURE 11, page 11. The outdoor lengths depend on the instal-

lation. Outdoor vent length requirements are listed in the installation instructions for the

horizontal and vertical vent/combustion air kits on pages 12-17.

203mm

127mm

Inlet Ai r Pi pe

Diameter

Vent Pipe Diameter

Model SCE - All Sizes

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 35 36

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