Measuring Standards - Heatilator LEGACY42-IFT Installation Manual

D. Measuring Standards
Vertical and horizontal measurements listed in the vent
diagrams were made using the following standards:
• Pipe measurements are shown using the effective length
of pipe. See Figure 4.4 for information on effective length
of pipe components.
• Total vent length is measured from the start of the vent
run, to the end of the vent run, including straight pipe as
well as elbows.
• Horizontal pipe installed level with no rise.
VERTICAL
Effective Length
SLG
Pipe
Inches
SLG4 2-3/4
SLG6 4-3/4
SLG12 10-3/4
SLG24 22-3/4
SLG36 34-3/4
SLG48 46-3/4
Horizontal
SLG
Pipe
Inches
SLG4 8-7/8
SLG6 10-1/4
SLG12 14-1/2
SLG24 23
SLG36 31-1/2
SLG48 39-7/8
Figure 4.4 Elbow Chart
RUN
HORIZONTAL
Rise/Run
Millimeters Inches Millimeters
70 2
121 3-3/8
273 7-5/8
578 16-1/8
883 24-5/8
1187 33
Vertical
Millimeters Inches Millimeters
225 18-5/8
260 20
368 24-1/4
584 32-3/4
800 41-1/4 1048
1013 49-5/8 1260
Heatilator • LEGACY42-IFT Installation Manual • 4095-901 Rev. A • 12/17
• The LEGACY comes standard with a 2 minute pre-
purge function designed to remove gas from the
appliance and establish a positive draft for the vent
system.
• The LEGACY comes standard with a 20 minute
post-purge function designed to eliminate condensa-
tion in the venting system components.
49
85
193
409
624
840
473
508
616
832
WARNING
Fire Risk.
LEGACY models must be power vented using
the termination cap supplied with the appliance.
Failure to vent properly could cause overheat-
ing and fire.
17