Heatiator CD4842IR-C, CD4236ILR-C, CD4236IR-C Top Vent Vertical Termination, Maximum + V 2 Min

Top Vent - Vertical Termination (continued)

3.Match the amount of vertical you have in the system with the chart to find the appropriate position to set the Flue Restrictor (see Figure 7.10).

Vertical	TOP VENT		REAR VENT
	NG	LP	NG	LP
4 ft.	1-1	No	No	No
		Restrictor	Restrictor	Restrictor
8 ft.	2-2	1-2	1-1	No
				Restrictor
15 ft.	3-3	3-2	2-2	1-2
20 ft.	3-4	3-3	3-3	2-3
25 ft.	3-4	3-3	3-3	2-3
30 ft.	4-4	3-4	3-4	3-3
35 ft.	4-4	3-4	3-4	3-3
40 ft.	4-4	4-4	4-4	3-4
50 ft.+	4-4	4-4	4-4	4-4

Figure 7.10

Note: If the DVP-2SL or DVP-SLP24 adapter is used with SLP pipe, you MUST subtract one number from the table above.

Example: Top vent 40 ft vertical with DVP pipe = 4-4 Top vent 40 ft vertical with SLP pipe = 3-3

Two Elbows

V2

H1

Figure 7.12

4. Center the Flue Restrictor on vent and secure in place by using two self-tapping screws (see Figure 7.8 and Figure 7.11).

5. Reinstall the Exhaust Shield.

1 2 3 4 5

SETTING

1 2 3 4 5

Figure 7.11

	V1	H1 Maximum		V2	V1 + V2 Min.
Elbow only		2 ft.	610 mm	*	*	*
6 in.	152 mm	6 ft.	1.8 m	*	*	*
2 ft.	610 mm	11 ft.	3.4 m	*	*	*
3 ft.	914 mm	16 ft.	4.9 m	*	*	*
4 ft.	1.2 m	20 ft.	6.1 m	*	*	*
	V1 + V2 + H1	= 60 ft. (18.3 m) Maximum
*No specific restrictions on this value EXCEPT

V1 + V2 + H1 cannot exceed 60 ft (15.2 m)

V1

Heatilator • CD4236IR-C, CD4842IR-C • 2207-900 Rev. J • 11/11 31