Form RGM 433-CV/LN, Mfg No. 177854 (Revision 1), Page 3
Partitions, columns, counters, or other obstructions should be taken
into consideration when locating the unit heater so that a minimum
quantity of airflow will be deflected by such obstacles.
When units are located in the center of the space to be heated, the air
should be discharged toward the exposed walls. In large areas, units
should be located to discharge air along exposed walls with extra units
provided to discharge air in toward the center of the area.
6. Dimensions
Field Wiring
A = 115V/60Hz/1Ph
Connections
B = Thermostat Wires (24V)
Rear
View
6-9/16
(167)
5-13/16
(148)
4 (102)
3-1/16
(78)
1/2" NPT Gas
Connection
A B
Front
View
28-5/8 (727)
12-1/8
(308)
Adjustable Louvers
Top View
Air Flow
17-15/16
(456)
9/16
(14)
16 (406)
Right Side View
Standard control
side is the right side;
units may be con-
verted to left side
controls in the field.
21-1/4 (540)
25-9/16 (540)
Figure 1 - Dimensions (inches and mm) of Models FT30-CV and FT45-CV with Option AV6 and Model FT45-LN
with Option AL2B
Access Panel
3/8-16 Cage
Nuts for Unit
Suspension
4" Diameter Flue Outlet
At those points where infiltration of cold air is excessive, such as at
entrance doors and shipping doors, it is desirable to locate the unit so
that it will discharge directly toward the source of cold air from a dis-
tance of 15 to 20 feet (4.6-6.1M).
CAUTION: Do not locate the heater where it may
be exposed to water spray, rain or dripping water.
7. Clearances and Combustion Air
Required Clearances
FT 30 and 45
inches mm
Top
1
25
Flue Connector
6
152
Access Panel
18
457
Non-Access S ide
1
25
Bottom
1
25
Rear
18
457
Units must be installed so that
the clearances in the table are
provided for combustion air
space, inspection and service,
and for proper spacing from
combustible construction.
This fuel-burning heater must
be supplied with the air that en-
ters into the combustion process
and is then vented to the outdoors. Sufficient air must enter the equip-
ment location to replace that exhausted through the heater vent system.
In the past, the infiltration of outside air assumed in heat loss calcula-
tions (one air change per hour) was assumed to be sufficient. However,
current construction methods using more insulation, vapor barriers,
tighter fitting and gasketed doors and windows, weather-stripping, and/
or mechanical exhaust fans may now require the introduction of out-
side air through wall openings or ducts.
The requirements for combustion and ventilation air depend upon
whether the unit is located in a confined or unconfined space. An "un-
confined space" is defined as a space whose volume is not less than 50
cubic feet per 1000 BTUH of the installed appliance. Under all condi-
tions, enough air must be provided to ensure there will not be a nega-
tive pressure condition within the equipment room or space. For spe-
cific requirements for confined space installation, see Paragraph 8.
WARNING: These fan-assisted unit heaters are
designed to take combustion air from the space
in which the unit is installed and are not designed
for connection to outside combustion air intake
ducts. Connecting outside air ducts voids the
warranty and could cause hazardous operation.
See Hazard Levels, Page 1.
