Use and Care Manual
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MRCOOL Manuals
Forced Air Furnaces
70,000 BTU 95% AFUE Downflow Multi-Speed Low NOX Gas Furnace with 17.5 in. Cabinet
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507277-03C
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mrcool.com
Gas Piping
CAUTION
Do
Not
W
ARNING
IMPORT
ANT
NOTE:
IMPORT
ANT
Leak Check
Figure 51.
MANUA
L
MAIN
SHUT−OFF
V
AL
VE
WILL
NOT
HOLD
NORMAL
TEST
PRESSURE
CAP
FURNACE
ISOL
ATE
GAS
V
AL
VE
1/8
"
N.
P
.T
.
PLUGGED
T
AP
IMPORT
ANT
W
ARNING
1
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