Aerovent IM-500 - Manual (Page 3)

3 Aerovent IM-500
Special Precautions
THE INSTALLATION AND MAINTENANCE
INSTRUCTIONS IN THIS MANUAL MUST BE
FOLLOWED TO PROVIDE SAFE, EFFICIENT AND
TROUBLE FREE OPERATION. IN ADDITION,
PARTICULAR CARE MUST BE EXERCISED
REGARDING THE SPECIAL PRECAUTIONS LISTED
BELOW. FAILURE TO PROPERLY ADDRESS THESE
CRITICAL AREAS COULD RESULT IN PROPERTY
DAMAGE OR LOSS, PERSONAL INJURY OR
DEATH.
1. In Canada, only 100% outside air unit may be installed.
They must be solely for replacing exhausted inside air
with heated air.
2. Unit must be installed such that no source of flam-
mable vapor, gases or dust is located within 20 feet
horizontally of the unit, unless that source is separated
from the unit by an enclosure of fire and vapor resis-
tive materials.
3. Disconnect all power before making wiring connec-
tions to prevent electrical shock and equipment dam-
age. All units must be wired in strict accordance with
the wiring diagram furnished and the NEC.
4. Turn off all gas before installing equipment.
5. Gas pressure to the unit controls must never exceed
the gas supply pressure on the data sheet. The unit and
its individual shutoff valve must be disconnected from
the gas supply during any pressure testing of gas sup-
ply piping system at pressures greater than the supply
pressure shown on the unit’s data sheet. (Maximum
pressure to the unit shall never exceed 5 psig.)
6. Check the gas supply pressure at the pressure gauge
upstream from the pressure regulator. A pressure
regulator, which will satisfactorily limit the gas supply
pressure, must be installed with each heater. Purging
air from gas lines and piping must be performed as
described in ANSI Z223.1, latest edition, “National
Fuel Gas Code” (or CAN/CGA-B149 codes in
Canada). STRAINERS BETWEEN THE SUPPLY
LINE AND AIR MAKE-UP UNIT ARE HIGHLY
RECOMMENDED.
7. Check damper operation to insure damper blades
travel to their full open position and that the damper
end switch is functioning properly.
8. To prevent unit or building structural damage, do not
operate unit where combustion air may be exposed to
chlorinated, halogenated or acid vapor laden air.
9. Minimum clearances to combustibles must be main-
tained. The minimum clearances to be maintained are
6" from the top, ends and sides of the unit. Allow a 36"
minimum clearance on the sides of the unit for servic-
ing. Access doors are provided for servicing the gas
controls, electric components and drive adjustment.
The unit must be installed such that the surface tempera-
ture of any adjacent combustible material shall not exceed
90 o F above an ambient temperature of 77 o F.
10. Do not block or modify combustion or ventilation air
openings. Installation must conform to all local codes,
or in the absence of local codes, with National Fuel
Gas Code, ANSI Z223.1, latest edition (in Canada
install according to CAN/CGA-B149, Installation
Code for Gas Burning Appliances and Equipment” or
CAN/CGA-B149-2, “Installation Code for Propane
Burning Appliances and Equipment”).
11. Do not operate unit without exhaust fan or fans oper-
ating. Insure proper interlock with exhaust fan system.
Direct-fired units operate by heating air directly when
the air is passed over the burner flame. On initial burn-
er start-up, or on burner shut down some gas odor may
be detected. The presence of gas odors under these
temporary intermittent conditions does not indicate an
equipment problem, nor do they indicate a hazardous
or unsafe operating condition. Direct-fired equipment
is not recommended for installations that may be high-
ly sensitive to temporary gas odors. If gas odors persist
after initial burner ignition, or for extended periods
after burner shut down, discontinue use of unit and
call a qualified service technician.
12. Installation in airplane hangars must be in accordance
with the Standard for Aircraft Hangars, ANSI/NFPA
409 and in public garages in accordance with the
Standard for Parking Structures, ANSI/NFPA
13. Use spreader bars when lifting equipment.
14. Consult piping, electrical and venting instructions
before installation. Keep all literature shipped with the
unit for future servicing. Leave all literature with the
owner.
15. If the failure or malfunction of this heater creates a
hazard to other fuel burning equipment in the building,
the unit must be interlocked to open inlet air dampers
or other such devices.
Installation & Manufacturing
Codes
Manufacturing:
A. The units as constructed conform to ANSI Air Make-
Up std. Z83.4, Z83.18, Z223.1, and HFPA54.
B. Wiring within the control panel meets and carries the
UL508 label and meets ANSI/INFPA #70-1987.
C. Piping within the unit meets ANSI Code Z223.1
National Fuel Gas Code.
D. Fan performance tested in accord with AMCA 210.
E. Fan Sound tested in accord with AMCA 310.
F. Insurance codes IRI and FM as requested.
G. Equipment components supplied carry the UL electri-
cal listings.
Installation codes governing unit installation by
contractors:
A. ANSI Z83.4, Z83.18, or Z223.1 (latest edition) as
applicable.