
17
Heatilator • LEGACY42-IFT Installation Manual • 4095-901 Rev. A
• 12/17
Figure 4.4 Elbow Chart
SLG
Pipe
Effective Length
Rise/Run
Inches
Millimeters
Inches
Millimeters
SLG4
2-3/4
70
2
49
SLG6
4-3/4
121
3-3/8
85
SLG12
10-3/4
273
7-5/8
193
SLG24
22-3/4
578
16-1/8
409
SLG36
34-3/4
883
24-5/8
624
SLG48
46-3/4
1187
33
840
RUN
RISE
EFFEC
TIVE
LENGTH
VERTICAL
HORIZONTAL
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.
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.
WARNING
• 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.
SLG
Pipe
Horizontal
Vertical
Inches
Millimeters
Inches
Millimeters
SLG4
8-7/8
225
18-5/8
473
SLG6
10-1/4
260
20
508
SLG12
14-1/2
368
24-1/4
616
SLG24
23
584
32-3/4
832
SLG36
31-1/2
800
41-1/4
1048
SLG48
39-7/8
1013
49-5/8
1260