507716-01
Page 31 of 58
Issue 1717
6. On field supplied terminations, a minimum distance
between the end of the exhaust pipe and the end of
the intake pipe without a termination elbow is 8” and a
minimum distance of 6” with a termination elbow. See
7. If intake and exhaust piping must be run up a side
wall to position above snow accumulation or other
obstructions, piping must be supported every 24” (610
mm) as shown in Figure 39. When exhaust and intake
piping must be run up an outside wall, the exhaust
piping must be terminated with pipe sized per Table 7.
The intake piping may be equipped with a 90° elbow
turndown. Using turndown will add 5 feet (1.5 m) to the
equivalent length of the pipe.
8. A multiple furnace installation may use a group of up to
four terminations assembled together horizontally, as
Figure 40.
Figure 41.
Figure 42.
Figure 43.
Figure 44. Direct Vent Application Using Existing
Chimney
3” - 8”
(76MM-
203MM)
STRAIGHT-CUT OR
ANGLE-CUT IN DIRECTION
OF ROOF SLOPE
SHOULDER OF FITTINGS
PROVIDE SUPPORT
OF PIPE ON TOP PLATE
ALTERNATE
INTAKE PIPE
INTAKE PIPE
INSULATION (optional)
EXTERIOR
PORTION OF
CHIMNEY
INSULATE
TO FORM
SEAL
SHEET
METAL TOP
PLATE
Minimum 12” (305MM)
above chimney top
plate or average snow
accumulation
8” - 12”
(203MM - 305MM)
3”-8”
(76MM-203MM)
* SIZE TERMINATION PIPE
PER EXHAUST PIPE TERMINATION
SIZE REDUCTION TABLE
Summary of Contents for GUH95C
Page 3: ...507716 01 Page 3 of 58 Issue 1717 Figure 1 Parts Arrangement...
Page 22: ...507716 01 Page 22 of 58 Issue 1717 Figure 25 Figure 26...
Page 37: ...507716 01 Page 37 of 58 Issue 1717 Figure 59 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC...
Page 56: ...507716 01 Page 56 of 58 Issue 1717 Start Up Performance Checklist...
