Publicidad
Idiomas disponibles
Idiomas disponibles
If opening connects directly to, or within vertical ducts, the
free area of each opening must be at least 1 square inch per
4,000 BTU/hr. combined input of appliances in area.
If horizontal ducts are used, the free area of each opening
must be at least 1 square inch per 2,000 BTU/hr. combined
input of appliances in area.
FIGURE 7 - GRILLES CONNECTING ROOMS TO MAKE
UNCONFINED SPACE
VENTILATION GRILLES CONNECTING TWO
ROOMS TO MEET UNCONFINED SPACE
200 SQ IN
MINIMUM
BETWEEN
LARGE
ROOMS
RECOMMENDED FRESH AIR DUCT INTO CRAWL
SPACE IN FURNACE AREA OR IN CLOSET WITH
WATER HEATER
FOR EXAMPLE: Your furnace is rated at 50,000 BTUu/hr. The
water heater is rated at 30,000 BTU/hr. The total is 80,000
BTU/hr. You need two grilles, each with 20 square inches of
free opening, unless connected by horizontal ducts which
would require each grille or opening to have a free area of
40 square inches.
FIGURE 8
CHIMNEY OR GAS VENT
OUTLET AIR
OUTLET AIR
INLET AIR
INLET AIR
Openings for inlet or outlet air should not be made into
attic area if attic is equipped with a thermostat controlled
power vent.
100 SQ IN
VENTILATION
GRILLES
INTO CLOSET
FOR HOT
WATER
HEATER
100 SQ IN
VENTILATED
ATTIC
12
TO
ATTIC
100 SQ
INCHES
EACH
WALL
FURN
10 CRAWL
SPACE
MAX
12
VENTILATED
CRAWL SPACE
FIGURE 9
Free Area in Square Inches.
Each opening is based on one square inch per 4,000 BTU/hr
Square inches
BTU/hr input
of opening
30,000
7.5
35,000
8.75
40,000
10.00
45,000
11.25
50,000
12.50
60,000
15.00
Shown in square inches - each opening (furnace only)
Based on one square inch per 4,000 BTU/hr.
Recessed Wall Mount
Installation
FIND THE STUDS AND CEILING JOINTS
(see CAUTION on page 7)
Use a stud locater or small finishing nails. Repeatedly drive
and remove a nail into the wall in the area of the stud until
it is located. Then find the inside edge of the stud. Leave
the nail at this location.
The other stud should be about 14½-inches from the one
found. Drive finishing nails on the inside of this stud. Draw
wall cutout to required size as shown on Figure 13. If wall
studs are not on 16-inch centers. See "CLOSE OFF STUD
SPACE." (As shown on Figure 12).
CUT WALL OPENING
Provide an opening as shown on Figure 10. Work from the
top in the attic to cut away the ceiling plate.
WARNING: BEFORE INSTALLING: To avoid electrical
shock, turn off electrical circuits that pass through the wall
where you are going to install the furnace.
ATTACH HEADER PLATE
MODELS: CF501E/CF502E
Locate header plate between wall studs at 821/2 inches
from finished floor and nail into position with end flanges
pointing up. Make sure header plate is level.
MODELS: CF351E/CF352E
Locate header plate between wall studs at 74 inches
from finished floor and nail into position with end flanges
pointing up.
COUNTERFLOW TOP VENT GAS WALL HEATER
Required number of holes
sill or header plates
1 - 1/2ʺ
2ʺ
3ʺ
7
4
2
8
5
2
9
5
3
10
6
3
11
8
3
13
8
4
11
Publicidad
