Teledyne EHE 2G-3e.Room Ventilation, 2H. Condensate Disposal, Installation of Insect Screens

Hi-E2 Page 7

Elbow

Combustion

Air Pipe

Vent

Exhaust

Insect Screens Pipe

Installed

(See Fig. 10)

18" min.60" max

A

A

Plumbing vent roof boot

A=Maximum snow accumulation level plus 12"

Vent

Drain

To

Disposal

Collector

Drain

Blower

Figure 9. Vent and Combustion Air Terminals at Roof.

Combustion		Vent
		Exhaust
Air Pipe
		Pipe
		Install special
	Elbow	insect screen at
		end of pipe
		inside coupling
		or elbow. Cut
		to size as
		necessary.

Figure 10. Installation of Insect Screens.

Both combustion air and vent piping joints must be sealed. Metal combustion air pipe joints should be fastened with screws and sealed with permanent sealer or tape. Plastic vent pipe joints must be made with solvent cement listed for such use. Joints in 29-4C®stainless steel pipe must be sealed in accordance with its listing. Connection of combustion air and vent piping to the heater should be serviceable — i.e. removable for heater service.

2G-3e. Room Ventilation

The room a Hi-E2is installed in must be provided with adequate ventilation. Like other gas-fired appliances, the Hi-E2releases heat to its environment, and a room with no ventilation may become too warm.

In one-pipe installations, the normal (code- required) provisions for combustion air also assure reasonable ventilation of the room. If a two-pipe system is installed, ventilation must be provided by

Drain

Trap/

Neutralizer

Figure 11. Condensate Drainage Components.

	Condensate From
	Vent/Blower Drains
Condensate
From
Collector
Drain
	Water Level
	Pushed Down
Water Level	Slightly
Pulled Up	Overflow
2"-3"
	To
(50-75mm)
	Disposal
Trap
	1/4" - 3/8"
	(6-10mm)

Figure 12. Condensate Drain and Trap.

other means, such as through grilles or openings or with a small fan.

2H. Condensate Disposal

In a high-efficiency combustion process, combustion product gases are cooled so much that liquid water is condensed. Flow of this “condensate” can be quite high. When pool water is very cold, as much as two or three gallons of condensate can be produced in an hour. Condensate is mildly acidic.