Crestron electronic 2 Manual De Usuario

        

Installation & Operation Manual

3.  Maintain clearances as shown in FIG.’s 4-1 thru 4-3, 
 

pages 21 and 22.  The vent termination should not be 

 

located in traffic areas such as walkways, adjacent 

 

buildings, operable windows, or doors.  Also maintain 

 the 

following:

a. Vent 

must 

terminate:

 

•  At least 6 feet (1.8 m) from adjacent walls.

 

•  Not less than 7 feet (2.1 m) above grade where located 

    adjacent to public walkways.

 

• No closer than 12 inches (305 mm) below roof 

  

overhang.

 

• At least 3 feet (.9 m) above any forced air intake 

 

  within 10 feet (3 m).

 

• No closer than 4 feet (1.2 m) horizontally 

 

  from any door or window or any other gravity air 

  

inlet.

b.  Air inlet must terminate at least 12 inches (305 m) 
 

above  grade  or  snow  line;  at  least  36  inches            

 

(914 mm) below the vent termination.

c.  Do not terminate closer than 4 feet (1.2 m) 
 

horizontally from any electric meter, gas meter, 

 

regulator, relief valve, or other equipment.  Never 

 

terminate above or below any of these within 4 feet  

 

(1.2 m) horizontally.

4.  Locate terminations so they are not likely to be damaged 

by foreign objects, such as stones or balls, or subject to 
buildup of leaves or sediment.

  12" MIN

GRADE OR
SNOW LINE

TO BOILER INTAKE
AIR CONNECTION

FROM BOILER VENT
PIPE CONNECTION

36" MIN
48" MAX

PVC/CPVC or ABS is acceptable air inlet pipe material. 

Follow instructions below when 
determining vent location to avoid 
possibility of severe personal injury, death, 
or substantial property damage.

A gas vent extending through an exterior 
wall shall not terminate adjacent to a wall 
or below building extensions such as eaves, 
parapets, balconies, or decks.  Failure to 
comply could result in severe personal 
injury, death, or substantial property 
damage.

Installation must comply with local 
requirements and with the National Fuel 
Gas Code, NFPA 54 / ANSI Z223.1 for U.S. 
installations or CSA B149.1 for Canadian 
installations.

Locate the vent/air terminations using the following 
guidelines:

1.  The total length of piping for vent or air must not exceed 

the limits given in the General Venting Section on page 
17 of this manual.

2.  You must consider the surroundings when terminating 
 

the vent and air:
a.  Position the vent termination where vapors will 
  not damage nearby shrubs, plants or air 
 

conditioning equipment or be objectionable.

b.  The flue products will form a noticeable plume as 
 

they condense in cold air.  Avoid areas where the 

 

plume could obstruct window views.

c.  Prevailing winds could cause freezing of condensate 
 

and water/ice buildup where flue products impinge 

 

on building surfaces or plants.

d.  Avoid possibility of accidental contact of flue 
 

products with people or pets.

e.  Do not locate the terminations where wind eddies 
 

could affect performance or cause recirculation, 

 

such as inside building corners, near adjacent 

 

buildings or surfaces, window wells, stairwells, 

 

alcoves, courtyards, or other recessed areas.

 WARNING

 WARNING

 WARNING Do not connect any other appliance to the 

vent pipe or multiple boilers to a common 
vent pipe except as noted in Section 2 
on page 18.  Failure to comply could 
result in severe personal injury, death, or 
substantial property damage.

f.  Do not terminate above any door or above or 
 

below any window.  Condensate can freeze, causing 

 ice 

formations.

g.  Locate or guard vent to prevent condensate 
 

damage to exterior finishes.

 WARNING Sidewall vent and air inlet terminations 

must terminate in the same pressure 
zone.

 

 CAUTION

Sidewall venting commercial products will 
result in large exhaust plumes in cold 
climates.  Consideration should be taken 
when locating in proximity to windows, 
doors, walkways, etc.