Enviro Cara owner manual Top

Initial Installation

QUALIFIED INSTALLERS ONLY

VENT CONFIGURATIONS AND RESTRICTOR SETTINGS:

Figure 28 and 29 shows the range of possible vent configurations if the unit is top vented, for vertical and horizontal terminations, any layout that remains within the grid areas is acceptable. They also show the vent restrictor required, relative to the length of vent pipe. Longer vertical vent lengths necessitate greater restriction.

Having the fewest number of elbows is ideal, as they tend to disrupt air movement. Using 45˚ elbows is preferable to using 90˚ elbows. Also, a shorter vent system will perform better than a longer one.

If the unit is rear vented it may have a maximum horizontal run of 36” (91.4 cm) and must be used with a 36” (91.4 cm) snorkel termination.

	40
	38
	36
	34		60% RESTRICTOR
	32
			UP TO 4 ELBOWS
of Unit)	30
	28
	26
Top	24
(From	22
	20
Vent
	18		50% RESTRICTOR
of	16		UP TO 4 ELBOWS
Feet
	14
Vertical	12
	10					UP TO 2 ELBOWS
						NO RESTRICTOR
	8
	6
	4
	2			1 ELBOW
				NO RESTRICTOR
	0	4	6	8	10	12	14	16	18	20
	2

Horizontal Feet of Vent

NOTE: For best results, 3' (76.2cm) or more of vertical rise is recommended.

Figure 28: Possible Vent Configurations for Top Vented;

Vertical and Horizontal Terminations with Elbows.

	40
	38
	36
	34	75% RESTRICTOR
	32
Unitof	30
	26
Top	28
	24
From
	22
Vent	20	70% RESTRICTOR
	18
of	16
Feet
	14

1250% RESTRICTOR

10

8

6

4NO RESTRICTOR

2

0

Figure 29: Possible Vent Configurations for Top Vented; Straight Vertical Vent & Terminations.

19