Delta PG PLUS-25 Operations Instructions download pdf (Page 39)

Venting and Combustion Air Installation

The maximum equivalent length is the

total length of the venting and the com-

bustion air inlet combined. This includes

termination fittings.

F o r Delta PERFORMANCE PLUS

applications that may exceed the 100 feet

maximum allowable equivalent length

for the venting system, contact Triangle

Tube Engineering Department for addi-

tional information on how the appliance

can be adjusted to the application.

- For each elbow included in the system,

the maximum allowable linear length

must be reduced as follows:

• Each 90º elbow within the system is

the equivalent of 10 linear feet.

• Each 45º elbow within the system is

the equivalent of 5 linear feet.

It is recommended that the installer uses the

same number of elbows and length of piping on

the venting system and the combustion air

inlet.

NOTICE

Table 2- Allowable Equivalent Length (Combined Vent and Combustion Air)

Maximum

Allowable for

Linear Length Combined 2 3 4 5 6 7

PERFORMANCE PLUS 180 170 160 150 140 130

Total Elbows within the Venting / Combustion Air System

Fig. 19: Standard Ve rtical Venting Installation Fig. 20: Ve r tical - Direct Vent Combination

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 75 76

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Delta PG PLUS-25 Operations Instructions Page 39