Aerovent 24S728 NDH 3/4 HP Installation, Operation And Maintenance Instructions

General Installation, Operation and Maintenance Instructions For Aerovent Products
Throughout this manual, there are a number of NOTICE statements that must be read and adhered to.
NOTICE
Indicates information considered important, but not hazard-related.
It is the responsibility of all personnel involved in installation, operation and maintenance to fully
understand the Notice procedures by which hazards are to be avoided.
Installation
1. Install the door heater in the position required.
Dimensions can vary to suit door opening. Heaters
can be mounted in horizontal, angular or vertical
position. Do not mount with the control box upside
down or on the bottom. Weight of the unit is
approximately 375 lbs.
NOTICE
Negative pressure in the building will have an
affect on the unit's ability to maintain an air
curtain effect. This should be taken into account
when locating the unit.
Typical Overhead Door
13'
13'
Angular Mounting Approx. 45°
Roll Top or Straight Lift Door
18" Min. Clearance
14'
Vertical Mounting Used With Roll Top Doors
Gas Door Air Heater
12'
45°
4'
5'
12'
©1997-2017 Aerovent
2. Connect electrical power. If the unit does not have
a built-in disconnect switch, then an external
disconnect should be provided by the installer. Be
sure power supply is the proper voltage. These
units are furnished for specified voltage.
3. Connect the gas supply line using the regulator
furnished with the unit. Consult your gas company
service representative to determine the proper size
for the gas line. This varies according to the
pressure and length of the run. Required gas input
can be determined by the chart, Fig. 1.
NATURAL GAS INPUT
MODEL NO. BTU
24S728 325,000
NDH*
440,000
3/4 HP 580,000
440,000
580,000
24S728
680,000
NDH* 790,000
2 HP 870,000
990,000
*PDH = Propane units
Fig. 2. Operating Station
1
1
Lamp
2
H
R
Back of Lid
Connect H, 1, 2, and R to terminal
strip in unit control box.
Fig. 3. Operating Station with Optional Hi-Lo Fire
2
1
R
Lamp
2
Back of Lid
Connect H, 1, 2, R, 13 and 15 to
terminal strip in unit control box.
IM-200
June 1997
NOMINAL GAS
TEMP. RISE PRESS.
73°F 1 oz.
99°F 2 oz.
131°F 3 oz.
66°F 2 oz.
85°F 3 oz.
102°F 4 oz.
118°F 5 oz.
130°F 6 oz.
148°F 7 oz.
H 1 2
R
Box
H 1 2 13 15 R
1
H
Box