Procom QL300RYLA-W 사용자 설명서

Rework   worksheet,  adding

the  space  of   the  adjoining  unconfined
space.  The  combined   spaces  must   have
enough  fresh air  to supply  all  appliances  in
both  spaces.

If  the actual  Btu/Hr  used  is  less  than  the  maximum  Btu/Hr  the  space  can  support, the  space  is  an
unconfined  space. You  will  need  no  additional  fresh  air  ventilation.

3. Add  the  Btu/Hr of all fuel burning appliances in the space.

     Vent-free heater                                                       Btu/Hr
     Gas water heater*                                                    Btu/Hr
     Gas furnace                                                             Btu/Hr
     Vented gas heater                                                   Btu/Hr
     Gas heater logs                                                       Btu/Hr
     Other gas appliances* +                                          Btu/Hr
    Total                                =                                        Btu/Hr

    *Do  not  include  direct-vent  gas  appliances. Direct-vent  draws  combustion  air  from  the  outdoors  and
       vents to the outdoors.
4. Compare  the  maximum  Btu/Hr  the  space  can  support  with  the  actual amount of Btu/Hr used.

Btu/Hr (maximum the space can support)

Btu/Hr (actual amount of Btu/Hr used)

         Example

 :  51,200 Btu/Hr(maximum the space can support)

                           56,000 Btu/Hr(actual amount of Btu/Hr used)
The  space  in  the  above  example  is  a  confined  space  because  the  actual  Btu/Hr  used  is  more  than  the
maximum  Btu/Hr  the  space  can  support.
You  must  provide  additional  fresh  air.  Your  options  are  as  follows:
A.  Rework  worksheet, adding  the  space  of  an  adjoining  room. If  the  extra  space  provides  an  unconfined
space, remove  door  to  adjoining  room  or  add  ventilation  grills   between  rooms. 

.

B.  Vent  room  directly  to  the  outdoors. See  

 .

C.  Install  a  lower  Btu/Hr  heater, if  lower  Btu/Hr  size  makes  room  unconfined.

 Example:
 Gas  water  heater          30,000        Btu/Hr
 Vent-free  heater    +      26,000        Btu/Hr
 Total                         =     56,000        Btu/Hr

If  the  area  in  which  the  heater  may  be  operated  is  smaller  than  that  defined  as  an  unconfined

space or  if  the building  is  of  unusually  tight  construction, provide  adequate  combustion  and  ventilation air by  one
of   the  methods  described  in  the  

 or  applicable  local  codes.

This  fresh air  would come  from an adjoining  unconfined
space.  When  ventilating  to  an  adjoining unconfined
space, you  must  provide  two  permanent  openings: one
within 12

"

 of  the  ceiling  and  one  within 12

"

 of  the  floor

on  the  wall  connecting  the  two  spaces (see  options 1
and  2, Figure 2). You  can  also  remove  door  into
adjoining  room (see  option 3, Figure 2). Follow  the

  for re-

quired size of  ventilation grills or ducts.

Provide extra fresh air by using ventilation grills or ducts.
You must provide two permanent openings: one within
12

"

 of the ceiling and one within 12

"

 of the floor. Connect

these items directly to the outdoors or spaces open to the
outdoors. These spaces include attics and crawl spaces.
Follow the 

for required size of ventilation grills or ducts.

 Do not provide openings for  inlet or outlet

air into attic if attic has a thermostat-controlled power vent.
Heated air entering the attic will activate the power vent.

outlet