ANSI/NFPA 211: CHIMNEYS, FIREPLACES, VENTS, AND
SOLID FUEL BURNING APPLIANCES
ANSI/NFPA 90B: WARM AIR HEATING AND AIR CONDI-
TIONING SYSTEMS
ANSI/NFPA 70: NATIONAL ELECTRICAL CODE
CSA B139: INSTALLATION CODE FOR OIL BURNING
EQUIPMENT
CAS C22.1: CANADIAN ELECTRICAL CODE
Only the latest issues of these codes should be used, and are
available from either The National Fire Protection Agency, Bat-
terymarch Park, Quincy, MA 02269 or The Canadian Standards
Association, 178 Rexdale Blvd., Rexdale, Ontario M9W 1R3.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the furnace and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, CAUTION
and NOTE. These words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies a hazard
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which would result in minor personal
injury or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
INTRODUCTION
The model 58CLA Furnaces are available in 2 sizes. Each size unit
can be fired at 3 different rates by a simple nozzle change. Unit
105-12 covers input ranges from 91,000 to 105,000 Btuh, unit
120-20 covers input ranges from 119,000 to 154,000 Btuh.
This furnace is a Low-Boy unit. It may be operated only in the
upflow configuration.
The furnace is shipped as a packaged unit, complete with burner
and controls. It requires a line voltage (115 vac) connection to
control box, a thermostat hook-up as shown on wiring diagram, oil
line connection(s), adequate duct work, and connection to a
properly sized vent.
The air handling capacity of this furnace is designed for cooling
airflow. Refer to Table 12 for expected airflows at various external
duct static pressures.
Fig. 2-Dimensional Drawing
Dimension (IN.)
UNIT
SIZE
UNIT DIMENSIONS
FLUE
HEIGHT
RETURN
OPENING
SUPPLY
OPENING
VENT
CONN
Width
Depth
Height
A
B
C
D
E
105-12
21-1/4
53-3/4
31-1/2
26-1/2
20
20
5
120-20
21-1/4
60-5/32
34-3/4
28-11/32
22
24
6
A98009
A
D
10"
E
3"
B
C
21
1
⁄
4
″
20"
20"
20"
VENT
CONN
2
