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INSTALLATION INSTRUCTIONS
Table 4
Minimum Space Volumes for 100% Combustion, Ventilation and Dilution Air from Outdoors
OTHER THAN FAN‐ASSISTED TOTAL
(1,000'S BTUH GAS INPUT RATE)
30
ACH
1,050
0.60
(29.7)
1,260
0.50
(35.6)
1,575
0.40
(44.5)
2,100
0.30
(59.4)
3,150
0.20
(89.1)
(118.9)
6,300
0.10
(178.0)
(237.8)
NP
0.00
NP = Not Permitted
CONDENSATE TRAP
CAUTION
!
FROZEN AND BURST WATER PIPE HAZARD
Failure to protect against the risk of freezing may result in
property damage.
Special precautions MUST be made if installing furnace in an
area which may drop below freezing. This can cause improper
operation or damage to equipment. If furnace environment has
the potential of freezing, the drain trap and drain line must be
protected. The use of accessory drain trap heaters, electric
heat tape and/or RV antifreeze is recommended for these
installations.
CAUTION
!
PROPERY DAMAGE HAZARD
Failure to follow this caution may result in burst water pipes
and/or property damage.
If a condensate pump is installed, a plugged condensate drain
or a failed pump may cause the furnace to shut down. Do not
leave the home unattended during freezing weather without
turning off water supply and draining water pipes or otherwise
protecting against the risk of frozen pipes.
12
40
50
1,400
1,750
1,400
(39.6)
(49.5)
(39.6)
1,680
2,100
1,680
(47.5)
(59.4)
(47.5)
2,100
2,625
2,100
(59.4)
(74.3)
(59.4)
2,800
3,500
2,800
(79.2)
(99.1)
(79.2)
4,200
5,250
4,200
(148.6)
(118.9)
8,400
10,500
8,400
(297.3)
(237.8)
NP
NP
Specifications subject to change without notice.
FAN‐ASSISTED TOTAL
(1,000'S BTUH GAS INPUT RATE)
40
60
80
3
3
Space Volume Ft
(M
)
1,500
2,000
(42.5)
(56.6)
1,800
2,400
(51.0)
(67.9)
2,250
3,000
(63.7)
(84.9)
3,000
4,000
(84.9)
(113.2)
4,500
6,000
(127.3)
(169.8)
9,000
12,000
(254.6)
(339.5)
NP
NP
NP
Condensate Trap − Upflow Orientation
When the furnace is installed in the upflow position, it is not
necessary to relocate the condensate trap or associated
tubing.
Refer to Figure 8 for upflow condensate trap
information. Refer to Condensate Drain section for information
how to install the condensate drain.
Condensate Trap − Downflow
Orientation
When the furnace is installed in the downflow position, the
condensate trap will be initially located at the upper left corner
of the collector box, as received from the factory. See the top
image in Figure 9. When the furnace is installed in the
downflow orientation, the condensate trap must be relocated
for proper condensate drainage. See the bottom image in
Figure 9.
To Relocate the Condensate Trap:
S
Orient the furnace in the downflow position.
S
Figure 9 shows the condensate trap and tubing before and
after relocation. Refer to Figure 9 to begin the trap conversion.
S
Refer to Condensate Drain section for information how to install
the condensate drain.
Gas Furnace: (F/G)9MVE
100
120
140
2,500
3,000
3,500
(70.8)
(84.9)
(99.1)
3,000
3,600
4,200
(84.9)
(101.9)
(118.9)
3,750
4,500
5,250
(106.1)
(127.3)
(148.6)
5,000
6,000
7,000
(141.5)
(169.8)
(198.1)
7,500
9,000
10,500
(212.2)
(254.6)
(297.1)
15,000
18,000
21,000
(424.4)
(509.2)
(594.1)
NP
NP
NP
440 01 4400 03
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