Vent Clearances

VENT TERMINAL

AIR SUPPLY INLET

Figure 47

AREA WHERE TERMINAL IS NOT PERMITTED

A = *Clearance above grade, veranda, porch, deck or balcony [*12 inches (30cm) minimum]

B= clearance to window or door that may be opened [*12 inches (30cm) minimum for appliances < 100,000 Btuh (30kW)

C= clearance to permanently closed window [minimum 12 inches (30cm) recommended to prevent condensation on window]

D = vertical clearance to ventilated soffit located above the terminalwithinahorizontaldistanceof24inches(60cm)from the center of the terminal [18 Inches (46 cm) minimum

E = clearance to unventilated soffit [12 inches 30cm) minimum]

F = clearance to outside corner [See Page 30] G = clearance to inside corner [See Page 30]

H = *not to be installed above a meter/regulator assembly within 3 feet (90cm) horizontally from the center-line of the regulator

I= clearance to service regulator vent outlet [*6 feet (1.8m) minimum]

J= clearance to non-mechanical air supply inlet to building or the combustion air inlet to any other appliance [*12 inches

(30cm) minimum for appliances ≤ 100,000 Btuh (30 kW)

36 inches (90cm) minimum for appliances > 100,000 Btuh (30kW)]

K = clearance to a mechanical air supply inlet [* 6 feet (1.8m) minimum]

L= †clearance above paved sidewalk or a paved driveway located on public property [*7 feet (2.1m) minimum]

M= clearance under veranda, porch, deck, or balcony [*12 inches (30cm) minimum ¥]

†a vent shall not terminate directly above a sidewalk or paved driveway which is located between two single family dwellings and serves both dwellings*

¥only permitted if veranda, porch, deck, or balcony, is fully open on a minimum of 2 sides beneath the floor*

*as specified in CGA B149 Installations Codes or ANSI Z223.1. Note: Local Codes or Regulations may require different clearances.

25613-0-0309

Page 31

DVX42DP71(N,P)-1, DVX36DP31(N,P)-1, DVX42DP91(N,P)-1, DVX42DP31(N,P)-1, DVX36DP71(N,P)-1 specifications

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With their focus on efficiency, style, and advanced technology, Empire Comfort Systems’ DVX36DP91(N,P)-1, DVX36DP71(N,P)-1, DVX42DP31(N,P)-1, DVX42DP91(N,P)-1, and DVX36DP31(N,P)-1 models represent some of the best options available for homeowners seeking a reliable and attractive heating solution.