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DOWNFLOW SUBBASE DIMENSIONS - IN. (MM)
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| PLENUM OPENING | FLOOR OPENING | HOLE NO. | |||
FURNACE |
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CASING | FURNACE IN DOWNFLOW APPLICATION |
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| WIDTH | |
WIDTH |
| A | B | C | D | ||
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Furnace with or without Cased Coil Assembly or | 19 | 3 | |||||
(445) | Coil Box | (384) | (483) | (425) | (518) | ||
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21 | Furnace with or without Cased Coil Assembly or | 19 | 2 | ||||
(533) | Coil Box | (473) | (483) | (514) | (518) | ||
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Furnace with or without Cased Coil Assembly or | 19 (483) | 1 | |||||
(622) | Coil Box | (562) | (603) | (518) | |||
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353AAV
*The plenum should be constructed
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| LOCATING |
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| TAB |
| 1 1/4″ (32 μμ) TYP |
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| PLENUM |
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| OPENING | B |
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A |
| D |
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| LOCATING |
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| TAB |
C |
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INSULATION |
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1
2
3
4
3
2
1
4
(SIZES 040 THROUGH 120 ONLY)
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PVC 90° ELBOW | ||||
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| PVC PIPE | |
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| A96211 | ||||
LOOSE PARTS BAG) |
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LENGTH OF STRAIGHT
PIPE PORTION OF COMBUSTION AIR INLET PIPE ASSEMBLY - IN. (mm)
CASING WIDTH | A |
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21 (533 mm) | ||
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12 ± 1/2 (305 ± 13 mm) | ||
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CONCENTRIC VENT FOR DIRECT VENT
B IN. (MM) DIA PVC
VENT/EXHAUST
13/16 (30 mm)
11/2
(38 mm)
F
E
C IN. (MM) DIA
D
A
B IN. (MM) DIA PVC
INTAKE/COMBUSTION AIR
KIT PART NO. |
| A* | B |
| C |
| D{ |
| E |
| F |
KGAVT0701CVT | 3/8 (848) | 2 (51) | 3 | 5/8 (422) | 1/4 (159) | 3/4 (146) | |||||
KGAVT0801CVT | 7/8 (987) | 3 (76) | 1/2 (114) | 1/8 (537) | 3/8 (187) | 1/2 (165) |
*Dimension A will change accordingly as Dimension D is lengthened or shortened.
{Dimension D may be lengthened to
8