Thomas & Betts RGM 405 Venting and Combustion Air contd, Installation Instructions for Option CC2

Worksheet - Determine Length of

Vent Pipe through the Box

7. Venting and Combustion Air (cont'd)

7A. Venting and Combustion Air Requirements for Separated-Combustion Installation (must use either Option CC2 or CC6) (cont'd)

Figure 5D - Installation of a Typical Separated- Combustion Unit with Horizontal Vent and Combustion Air Pipes (Option CC6)

Inlet Air

Guard

60” (1524mm) maximum

12” (305mm) minimumTop

View

	Concentric Adapter
Wall	Seal Joints
	Combustion Air Pipe
	Seal joints; see Require-
	ment No. 5 on page 6.
	Vent (Flue Exhaust) Pipe
	Maximum Length (See Requirement

Side View

Building Overhang

(914mm)ft3 minimum	(176mm)15/16”	Vent Pipe
		- PITCH
		TO
		DRAIN
	6-

Screened

Exhaust

Cap

Concentric Adapter Box

No. 4 on page 6.)

Minimum length is 5 ft (1.5M)

6ft (1829mm)

minimum

Adjoining

Building (914mm)minimum ft3

16”(406mm) minimum

24”(610mm)

minimum

Thimble	Wall	Combustion Air Pipe
		(PITCH TO DRAIN)

IMPORTANT NOTE: Exhaust cap must be installed so the baffles are positioned on horizontal and vertical centerlines.

Building Projection

"Through-the-Wall" View of a typical installation of a horizontal vent/inlet air terminal and concentric adapter (Option CC6)

Instructions and Requirements for Installing a Vertical Vent Terminal/Combustion Air Inlet (Requires Concentric Adapter Kit, Option CC2)

Vertical Vent Terminal/Combustion Air Package (Option CC2) includes:

Qty	Description	150,	250,300,
		200	350,400
1	Complete Vertical Vent Kit	157156	54444
	(Same as Option CC2)
1	Concentric Box Assembly	155392	68404
1	Exhaust	155631	53326
	Terminal
1	Combustion	155635	53330
	Air Inlet
1	Rubber seal for vent pipe	164492	164493
	opening in concentric adapter
1	Tube of High Temperature	53335	53335
	(450°F) Silicone Sealant

Field-supplied installation requirements:

•Thimble (a thimble is not required if wall is of non- combustible construction)

•Flashing

•Vent pipes (see requirements on pages 4 and 6)

•Combustion air pipes (see requirements, pages 4 and 6)

•Mounting brackets for concentric adapter box (or box may be mounted flush, depending on building construc- tion)

•Taper-type reducers as required (see requirements on page 6)

Installation Instructions for Option CC2

1.Determine the location for the vent terminal on the roof, allowing room for the concentric adapter box inside. A thimble may or may not be required depending on building construction and/or local codes. Prepare a hole through the roof for the combustion air pipe (Sizes 150 and 200, pipe is 6"; Sizes 250-400, pipe is 8"). The air inlet pipe must be flashed or sealed to the roof. Flashing is to be supplied by the installer as required by roof construction and/or codes.

WARNING: All vent terminals must be positioned or located away from fresh air intakes, doors and windows to preclude combustion products from entering occupied space. See Hazard Levels, Page 2.

2. Prepare the concentric adapter box.

2a) Determine whether field-supplied brackets are required. If used, attach brackets securely; do not leave any unsealed holes in the adapter box.

If brackets are not used, when in- stalled, the box should be tight against the roof.

2b) Install the rubber seal and the			inches	m m
vent pipe. Locate the vent pipe open-	Heater Side (max if	+	6	152
ing and place the rubber seal around	diameter changes)
	Width of Box	+	6	152
and over the edge of the metal.
	Bracket Length	+	__	___
Determine the length of the section of
	Width of Roof	+	__	___
vent pipe by adding the requirements.
	Inlet Pipe Height	+	__	___
On the heater side of all Sizes except
	Terminal Side (min)	+	22	559
CAUA 250, the vent pipe must ex-
tend no more than 6" (152mm) (length	Length of Pipe	=
limit does not apply to Size 250 be-

Form 405, Page 8