22
For gas fired unit, do not position flue
opening to discharge into a fresh air intake of
any other piece of equipment. Unit should
also be installed so that the flow of
combustion intake air is not obstructed from
reaching the furnace.
Flue gas is dangerously hot and contains
containments. The user is responsible for
determining if vent gases may degrade
building materials.
The National Gas and Propane Installation
Code, B149.1 specifies a 6 ft. horizontal vent
terminal clearance to gas and electric meters
and relief devices.
Local codes may supersede or further place
restrictions on vent termination locations.
Allow adequate space for piping access and
panel removal.
To ensure proper access for
field
service,
maintain
minimum
clearances for field piping and other
obstructions as indicated by Table 2 and
Figure 3.
Consult local building codes for
additional service clearance requirements.
Condensate drain connection for the coils is
located on the access side of the unit. The
high efficiency gas heater condensate drain
connection is located on the front side of the
unit. See Figure 3.
Table 2 - V3 Series Clearances
Unit
Size
Access Side
Clearance
(dimension
X on Figure
3)
Non-
access
side &
back
Front
V3-
A
36 inches
1
6
inches
2
18
inches
3
V3-
B
V3-
C
V3-
D
V3-
E
1.
Additional clearance may be required
to allow for coil removal.
2.
May be installed flush depending
upon local codes.
3.
Only for units with gas heat. If no gas
heat, front is 6 inches with note #2
Figure 3 - Minimum Clearance Required for
Access to Unit (V3 Series plan view)
Internal Control Panel
V3 units with internal control panel have
removable access panels on the front and
back of the supply fan section. V3 units that
have energy recovery only have one
removable supply fan access panel on the
X
(See Table 2)
Back (RA)
Front
Left
Right
Distances
from
adjacent
public
walkways,
adjacent
buildings,
operable
windows
and
building
openings, shall conform to local codes
and/or the National Fuel Gas Code,
ANSI Z223.1/NFPA 54, or the
National Gas & Propane Code, CSA
B149.1
WARNING
