Lennox G61MPV Engineering Data

G61MPV / Page 8
EXHAUST PIPE VENTING TABLE (For altitudes of 0−10,000 ft)
1
Maximum Equivalent Vent Length − ft.
Vent Pipe
G61MPV
36B 045
G61MPV
36B 070
G61MPV
36B 071
G61MPV
36C 090
G61MPV
60C 091
2
G61MPV
60C 110
2
G61MPV
60C 111
3
G61MPV
60D 135
V
en
t
Pi
pe
Diameter
−36B−045
−36B−070 −36B−071 −36C−090
−60C−090
−60C−091 −60C−110 −60C−111 −60D−135
2 in. 59 59
4
59 26
4
26 not allowed not allowed not allowed
2−1/2 in. 65 65
4
65 42
4
42 32
4
32 not allowed
3 in. 77 78
4
78 72
4
72 72
4
72
4
61 (0−4500 ft.)
4
46 (4501 − 10,000 ft.)
4 in. 234 214 214 204 204 179 179 160
NOTE − Minimum Equivalent Vent Pipe length is 15 feet (4.6 m).
1
Maximum Equivalent Vent Length" permitted is defined as Total Length (linear feet) of vent pipe, plus equivalent length (ft.) of fittings, plus equivalent length (ft.) of termination".
2
110 and 111 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 up−flow or down−flow applications must have 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 5 feet of straight vent pipe.
Two 45 elbows are equal to one 90 elbow.
One 45 elbow is equivalent to 2.5 feet of straight vent pipe.
Wall and roof termination (non−concentric) exhaust pipe must terminate with reducer to improve exhaust velocity away from intake piping.
045, 070 and 071 − 2, 2−1/2, 3 or 4 in. − terminate with 1−1/2 in. pipe
090 and 091 − 2, 2−1/2, 3 or 4 in. − terminate with 2 in. pipe
110 and 111 − 2−1/2, 3 or 4 in. − terminate with 2 in. pipe
135 − 3 or 4 in. − terminate with 2 in. pipe
TERMINATION KITS − EQUIVALENT VENT LENGTHS
Vent Pipe Equivalent Length − ft.
Heat
Size
Vent
Pipe
Diameter
Concentric
Kits
Close Couple
Kits
Wall Ring
Kit
Outdoor Exhaust
Accelerator
(Diameter X Length)
Size
Diameter
in.
2 in. 3 in. 2 in. 3 in. 2 in. 1−1/2 x 12 in. 2 x 12 in.
in
.
4
71M80
69M29
60L46
22G44
30G28 (WTK)
44J40
81J20 (WTK)
15F74 − − − − − −
2 12 not allowed 4
1
4 4 4 not allowed
045
2−1/2 15 not allowed 5
1
5 5 5 not allowed
−
045
3 21 not allowed 7
1
7 7 7 not allowed
4 42 not allowed 14
1
14 14 14 not allowed
2 12 not allowed 4
1
4 4 4 not allowed
−070
2−1/2
15 not allowed 5
1
5 5 5 not allowed
070
−071
3
24 not allowed 8
1
8 8 8 not allowed
4 42 not allowed 14
1
14 14 14 not allowed
2 3 3 not allowed 1
2
1 not allowed 1
−090
2−1/2
6 6 not allowed 2
2
2 not allowed 2
090
−091
3
6 6 not allowed 2
2
2 not allowed 2
4 12 12 not allowed 4
2
4 not allowed 4
2 3 3 not allowed 1
2
1 not allowed 1
−110
2−1/2
6 6 not allowed 2
3
2 not allowed 2
110
−111
3
6 6 not allowed 2
3
2 not allowed 2
4 12 12 not allowed 4
3
4 not allowed 4
135
3 not allowed 15 not allowed 6
3
6 not allowed 6
−
135
4 not allowed 25 not allowed 10
3
10 not allowed 10
1
Requires field provided 1−1/2 in. outdoor exhaust accelerator.
2
Requires field provided 2 in. outdoor exhaust accelerator.
3
For use only in non−direct vent applications, when snow riser is not required. Requires field provided 2 in. outdoor exhaust accelerator.
4
Outdoor exhause accelerator included in 71M80 kir; for use with −045−070−071 models.

Lennox G61MPV Specifications

General

Blower Type	Variable speed
Energy Star Certified	Yes
Gas Valve	Modulating
Fuel Type	Natural gas or propane
Ignition Type	Electronic
Heating Stages	2
Warranty	Limited Lifetime warranty on heat exchanger; 10-Year limited warranty on covered components
Heating Capacity	44, 000 to 132, 000 BTUH