Delta PG PLUS-25 Operations Instructions download pdf (Page 14)

8

Combustion Air and Venting

Combustion Air Requirements

The PERFORMANCE PLUS can use inside

air if no contaminants are present in the area of

installation. If contaminants are likely to be

present in the area of installation, outside air

must be piped directly to the unit as referenced

in Section VI Venting and Combustion Air

Piping.

In order to avoid the potential of indoor

contaminates when venting the appli-

ance, it is recommended to pipe combus-

tion air directly from the outdoors to the

unit as referenced in Section VI Venting

and Combustion Air Piping.

Outside Combustion Air

Combustion air can be ducted directly from the

outside to the air inlet fitting of the PERFOR-

MANCE PLUS using the following materials:

- PVC

- Galvanized metal vent

- Flexible metal vent

All seams and joints must be sealed with

sealant or mechanical fasteners. Do not use

tape as it is not considered a sealing material.

Air Openings

Air openings to the PERFORMANCE PLUS

are always required even if the combustion air is

obtained indoors or outdoors. These air open-

ings provide ventilation to prevent overheating

of the PERFORMANCE PLUS and its control

as well as providing combustion air.

The air openings must be sized to handle

the re q u i rements of all appliances and air

movers (exhaust fans, etc.) contained in

the same space using the same air s u p p l y.

Methods of Accessing Combustion A i r Into A

S p a c e

Indoor Combustion Air

The methods listed in this section for

accessing Indoor Combustion A i r

assume that the infiltration rate is ade-

quate and not less than .40 ACH. For

infiltration rates less than .40 ACH, ref-

erence the NFPA 54 National Fuel Gas

Code for additional guidance.

Opening Size and Location

Openings used to connect indoor spaces shall

be sized and located in accordance with the

following, see Fig.1:

NOTICE

NOTICE

BEST PRACTICE

Equipment Located in Confined

Spaces; All Air from inside the

building.

Fig. 1:

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 75 76

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