Lennox G61MPVT User Manual

G61MPVT − 50hz / Page 6
HIGH ALTITUDE INFORMATION
Pressure regulator adjustment will be required depending on altitude. See below for proper pressure regulator setting.
Manifold Pressure (Outlet) at High Fire − kPa
Altitude − m
Fuel
0−610
1
611−914
1
915−1219
1
1220−1372
Natural 0.87 0.80 0.75 0.70
2
LPG/Propane 2.49 2.29 2.12 2.02
1
High Altitude Pressure Switch Kits required for certain models, see Gas Heat Accessories table for order number.
2
LPG/Propane conversion kit required, see Gas Heat Accessories table for order number.
EXHAUST PIPE VENTING TABLE
For altitudes of 0−610 m
For altitudes of 611−1372 m
1
Maximum Equivalent Vent Length − m
1
Maximum Equivalent Vent Length − m
Vent Pipe G61MPVT G61MPVT
2
G61MPVT
3
G61MPVT G61MPVT G61MPVT
2
G61MPVT
3
G61MPVT
Vent
Pipe
Diameter
G61MPVT
−36B−070
G61MPVT
−60C−090
G61MPVT
−60C−110
G61MPVT
−60D−135
G61MPVT
−36B−070
G61MPVT
−60C−090
G61MPVT
−60C−110
G61MPVT
−60D−135
50 mm (2 in.) 12.2 4.5 not allowed not allowed 7.6 not allowed not allowed not allowed
80 mm (3 in.) 16.1 12.2 12.2 7.6 10 7.6 7.6 not allowed
100 mm (4 in.) 44 34.5 30 20 27.5 21.5 18.7 not allowed
NOTE − Minimum Equivalent Vent Pipe length is 4.6 m.
1
Maximum Equivalent Vent Length" permitted is defined as Total Length (linear meters) of vent pipe, plus equivalent length (m) of fittings, plus equivalent length (m) of termination".
2
110 models installed in up−flow or down−flow applications must have the supplied 90° street ell installed directly into the unit flue collar. The street ell must be included
in the elbow count.
3
135 models installed in down−flow applications must have 80 to 50 mm (3 in. to 2 in.) reducing elbow (supplied) installed directly into the flue collar. Reducing ell must be
included in elbow count.
4
90 elbows must be limited to sweep type elbows.
VENTING NOTES  One 90elbow is equivalent to 1.5 m of straight vent pipe.
Two 45 elbows are equal to one 90 elbow.
One 45 elbow is equivalent to 0.76 m of straight vent pipe.
Wall and roof termination (non−concentric) exhaust pipe must terminate with reducer to improve exhaust velocity away from intake piping.
070 − 50, 80, or 100 mm (2, 3 or 4 in.) − terminate with 40 mm (1−1/2 in.) pipe
090 − 50, 80, or 100 mm (2, 3 or 4 in.). − terminate with 50 mm (2 in.) pipe
110 − 80 or 100 mm (3 or 4 in.) − terminate with 50 mm (2 in.) pipe
135 − 80 or 100 mm (3 or 4 in.) − terminate with 50 mm (2 in.) pipe
TERMINATION KITS − EQUIVALENT VENT LENGTHS
Vent Pipe Equivalent Length − meters
Heat Size
Vent Pipe Di-
ameter
Concentric
Kits
Outdoor Exhaust Accelerator
(Diameter X Length)
Heat
Size
ame
t
er
50 mm (2 in.) 80 mm (3 in.)
(Di
ame
t
er
X
L
eng
th)
1
71M80 or 69M29 60L46 40 mm (1−1/2 in.) x 305 mm 50 mm (2 in.) x 305 mm
50 mm (2 in.) 3.6 not allowed 1.2 not allowed
−070
80 mm (3 in.)
7.3 not allowed 2.4 not allowed
070
100 mm (4 in.) 12.8 not allowed 4.3 not allowed
50 mm (2 in.) 0.9 0.9 not allowed 0.3
−090
80 mm (3 in.)
1.8 1.8 not allowed 0.6
090
100 mm (4 in.) 3.7 3.7 not allowed 1.2
110
80 mm (3 in.) 1.8 1.8 not allowed 0.6
−
110
100 mm (4 in.) 3.7 3.7 not allowed 1.2
−135
80 mm (3 in.) not allowed 4.6 not allowed 1.8
−
135
100 mm (4 in.) not allowed 7.6 not allowed 3.0
1
Outdoor exhaust accelerator included in 71M80 kit; for use with −070 models.

Lennox G61MPVT Specifications

General

Brand	Lennox
Model	G61MPVT
Category	Furnace
Language	English