Detroit-radiant-products-company HLV Series Manuel d'utilisateur télécharger pdf (Page 33)

HLV Series

3.0 Installation • Combustion Air Requirements

Combustion Air Requirements

This heater has a factory preset air oriﬁce to provide adequate combustion air intake to the unit.

Non-contaminated outside air for combustion must be ducted to the heater if any of the following apply:

• Chemicals such as chlorinated or ﬂuorinated hydrocarbons are present in the space where the heater

is installed (typical sources are refrigerants, solvents, adhesives, degreasers, paints, paint removers,

lubricants, pesticides, etc.).

• Negative building pressure.

Indoor air supply: If using combustion air intake from indoors, the required volume of the space must be

a minimum of 50 ft

per 1000 BTU/h (4.8 m

/kW) unless the building is of unusually tight construction. If

the building is of unusually tight construction with air inﬁltration rates of less than 0.40 air changes per

hour, outside combustion air is typically needed unless the sheer size of the building allows otherwise.

Contact the factory for further determination of air inﬁltration rates.

Outside air supply: Outside combustion air may be supplied via an accessory air duct attached directly

over the air oriﬁce. A wall inlet cap (P/N: WIV) must be used with horizontal air intake ducts. It is

recommended that the air intake pipe is connected to the heater with a 4 in. diameter ﬂexible air inlet boot

(P/N: AIRH) to allow ﬂexibility for expansion (Figure 3.20). Sidewall (horizontal) air intake is preferred.

Refer to Chart 3.3 for limitations on the length and size of air intake ducts.

• A maximum of two elbows is allowed in the vent.

• Keep air intake opening a minimum of 4 ft. from any exhaust vent openings. Always place vent stacks

higher than air intake openings.

• An air intake cap (P/N: WIV) must be installed to prevent blockages. Locate intake cap in an area

where dirt, steam, snow, etc. Will not contaminate or clog the intake screen.

• Insulated duct or PVC pipe should be used in humid applications to prevent condensation on the outer

surface of the intake pipe.

Figure 3.20 • Outside Combustion Air Supply

Chart 3.3 • Combustion Air Intake Limitations

Duct Size Maximum Length

4 in. O.D. 30 ft.

5 in. O.D. 45 ft.

6 in. O.D. 75 ft.

Air Intake Cap

Burner Control Box

Air Inlet Boot

NOTE: A powered air inlet (P/N: V-PAI) can be used to bring in outside air for combustion for runs

exceeding 20 ft. up to a 150 ft. maximum run.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 51 52

Pas de commentaire

Detroit-radiant-products-company HLV Series Manuel d'utilisateur Page 33