Heatiator NNXT3933IL Vent Information and Diagrams, Approved Pipe, Vent Table Key, Use of Elbows

7 Vent Information and Diagrams

A. Approved Pipe

This appliance is approved for use with Hearth & Home Technologies DVP and/or SLP venting systems. Refer to Section 17.B. for vent component information.

DO NOT mix pipe, fittings or joining methods from differ- ent manufacturers.

The pipe is tested to be run inside an enclosed wall. There is no requirement for inspection openings at each joint within the wall.

WARNING! Risk of Fire or Asphyxiation. This appliance requires a separate vent. DO NOT vent to a pipe serving a separate solid fuel burning appliance.

B. Vent Table Key

The abbreviations listed in this vent table key are used in the vent diagrams.

Symbol	Description
V1	First section (closest to appliance) of vertical length
V2	Second section of vertical length
H1	First section (closest to appliance) of horizontal length
H2	Subsequent sections of horizontal length

C. Use of Elbows

Diagonal runs have both vertical and horizontal vent as- pects when calculating the effects. Use the rise for the vertical aspect and the run for the horizontal aspect (see Figure 7.1).

Two 45º elbows may be used in place of one 90º elbow. On 45º runs, one foot of diagonal is equal to 8-1/2 in. (216

mm)horizontal run and 8-1/2 in. (216 mm) vertical run. A length of straight pipe is allowed between two 45º elbows (see Figure 7.1).

D. Measuring Standards

Vertical and horizontal measurements listed in the vent diagrams were made using the following standards.

•Pipe measurements are shown using the effective length of pipe (see Figure 7.2).

•Horizontal terminations are measured to the outside mounting surface (flange of termination cap) (see Figure 6.4.).

•Vertical terminations are measured to bottom of termination cap.

•Horizontal pipe installed level with no rise.

Vertical			in.
		.	1/2-8
	12	in
	8-1/2 in.

Horizontal

On 45° runs, 1 ft (.3 m) of diagonal is equal to 8-1/2 in. (216 mm) horizontal run and 8-1/2 in. (216 mm) vertical run.

Figure 7.1 Using Two 45° Elbows

	Effective Height/Length
	Pipe	inches	mm
	DVP4	4	102
Effective	DVP6	6	152
	DVP12	12	305
Height/Length
	DVP24	24	610
	DVP36	36	914
	DVP48	48	1219
	DVP6A	3 - 6	76 - 152
	DVP12A	3 - 12	76 - 305
DVP Pipe
(see chart)
	Effective Height/Length
	Pipe	inches	mm
Effective	SLP4	4	102
	SLP6	6	152
Height/Length
	SLP12	12	305
	SLP24	24	610
	SLP36	36	914
	SLP48	48	1219
SLP Pipe	SLP6A	2 - 6	51 - 152
	SLP12A	2 - 12	51 - 305
(see chart)

Figure 7.2 Pipe Effective Length

24 Heatilator • Novus NNXT • 4055-879 • Rev. o • 2/12