Modine Manufacturing 6-558.6 - Manual (Page 2)

INSTALLATION
SPECIAL PRECAUTIONS
2
Figure 2
Hinged Bottom for Burner Service
(See Dimension “C”, page 19)
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. Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage. All units must be wired strictly in accordance
with wiring diagram furnished with the unit.
2. Turn off all gas before installing unit heaters.
3. Gas pressure to unit heater controls must never exceed
14" W.C. (1/2 psi).
When leak testing the gas supply piping system, the unit
and its combination gas control must be isolated during
any pressure testing in excess of 14" W.C. (1/2 psi).
The unit should be isolated from the gas supply piping
system by closing its field installed manual shut-off valve.
4. Check gas inlet pressure at unit upstream from
combination gas control. The inlet pressure should be 6" -
7" W.C. on natural gas or 11" - 14" W.C. on propane gas.
Purging of gas piping should be performed as described
in ANSI Z223.1 - Latest Edition or in Canada in
CAN/CGA-B149 codes.
5. All units must be supplied with both combustion air and
exhaust piping to the outdoors.
6. Do not install in potentially explosive or flammable
atmospheres laden with grain dust, sawdust, or similar air-
borne materials. In such applications, a blower type heater
installed in a separate room with ducting, including
appropriate back flow prevention dampers to the dust-
laden room, is recommended.
7. Installation of units in high humidity or salt water
atmospheres will cause accelerated corrosion resulting in
a reduction of the normal life span of the units.
8. To prevent premature failure do not located ANY gas-fired
unit heaters in areas where chlorinated, halogenated or
acid vapors are present in the atmosphere.
9. Maintain separation between units so discharge from one
unit will not be directed into the inlet of another.
10. Do not install unit outdoors.
11. Minimum clearance to combustibles is 12 inches from the
bottom; 18 inches from the sides; 6 inches from the top
and vent connector.
12. Allow at least 6" clearance at the sides and 12" clearance
at rear (or 6" beyond end of fan motor at rear of unit,
whichever is greater) to provide ample air for combustion
and proper operation of fan.
13. The minimum distance from combustible material is based
on the combustible material surface not exceeding 160°F.
Clearance from the top of the unit may be required to be
greater than 6" if heat damage, or other than fire, may
occur to materials above the unit heater at the
temperature described.
14. Do not install units below 7 feet, measured from the
bottom of the unit to the floor, unless properly guarded to
provide protection from moving parts.
15. Modine units are designed for use in heating applications
with ambient temperatures between 32°F and 90°F. If an
application exists where ambient temperatures can be
expected to fall outside of the is range, contact factory
for recommendations.
16. Provide clearance for opening hinged bottom pan for
servicing. See Figure 2. Do not set unit on its bottom.
17. To assure that flames do not impinge on heat exchanger
surfaces, the unit must be suspended in a vertical and
level position. Failure to suspend unit properly may
shorten the life of the unit heater.
18. Do not life unit by power exhauster.
19. Be sure no obstructions block air intake and discharge of
unit.
20. Do not attach duct work, air filters, or polytubes to any
propeller (PSH) model unit.
21. In aircraft hangars, keep the bottom of the unit at least
10' from the highest surface of the wings or engine
enclosure of the highest aircraft housed in the hanger
and in accordance with the requirements of the enforcing
authority and/or NFPA No. 409 — Latest Edition.
22. In garages or other sections of aircraft hangars such as
offices and shops that communicate with areas used for
servicing or storage, keep the bottom of the unit at least
7' above the floor unless the unit is properly guarded to
provide user protection from moving parts. In parking
garages, the unit must be installed in accordance with
the standard for parking structures ANSI/NFPA 88A, and
in repair garages the standard for repair garages NFPA
#88B. In Canada, installation of unit heaters in airplane
hangars must be in accordance with the requirements of
the enforcing authority, and in public garages in
accordance with the current CAN/CGA-B149 codes.
23. Consult piping, electrical, and venting instructions in this
manual before final installation.
24. All literature shipped with your unit should be kept for
future use for servicing or service diagnosis. Do not
discard any literature shipped with your unit.
25. When servicing or repairing this equipment, use only
Modine-approved service replacement parts. A complete
replacement parts list may be obtained by contacting
Modine Manufacturing Company. Refer to the rating
plate on the unit for complete unit model number,
serial number and company address. Any substitution
of parts or controls not approved by Modine will be at
owners risk.
Heater Parts from ACF Greenhouses