Model

Certified

 

Vent Size

Total Effective

Combustion Air

 

 

 

 

Air Inlet

 

 

Vent

 

Length1

(ft)

Intake Pipe

Max. Length* (ft)

 

No.

Material

 

(in.)

 

 

 

 

 

Material

 

 

 

 

 

 

 

 

 

 

 

Min.

 

Max.

 

6” Ø

 

8” Ø

10” Ø

 

 

 

 

 

 

 

 

1005

 

 

6

 

 

 

 

Galvanized

45

 

 

 

100**

 

 

 

Category IV

 

 

 

 

 

 

 

 

 

Steel,

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

752

 

 

 

PVC,

 

 

 

 

 

 

 

 

 

 

1505

(AL29-4C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

ABS,

 

 

 

 

45

 

85**

 

2005

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CPVC

 

 

 

 

 

 

 

 

 

1

Vent lengths

are based on a lateral length of 2 ft. Refer to the latest edition of the NFGC for further details.

 

 

 

 

 

 

 

 

 

2

Consult factory for longer vent runs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Subtract 10 ft per elbow. Max. 4 elbows.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

** Adapters supplied by others.

Table M: Category IV Venting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

nal. The horizontal portions of the vent shall also be

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

supported for the design and weight of the material

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

employed to maintain clearances and to prevent physi-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

cal damage or separation of joints.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: A vent adapter (field-supplied) may be re-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

quired to connect the Category IV vent to the heater.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Termination

The vent terminal should be vertical and should termi- nate outside the building at least 2 ft above the highest point of the roof that is within 10 ft. The vent cap should have a minimum clearance of 4 ft horizontally from and in no case above or below (unless a 4 ft hori- zontal distance is maintained) electric meters, gas meters, regulators and relief equipment.

The distance of the vent terminal from adjacent public walkways, adjacent buildings, open windows and building openings must be consistent with the NFGC (U.S.) or B149 (Canada). Gas vents supported only by flashing and extended above the roof more than 5 ft should be securely guyed or braced to withstand snow and wind loads.

Fig. 23: Vertical Venting

25

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Image 25
Raypak 1005 Certified, Total Effective Combustion Air Air Inlet, Max. Length* ft, Min Max 10 Ø, Termination

1005 specifications

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