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installation
<br /> In the U.S., the installation of these units must comply with UNIT SUSPENSION
<br /> the "National Fuel Gas Code;',ANSI Z223,1, latest edition
<br /> (also known as NFPA 54)and other applicable local building CAUTION
<br /> codes. Do not locate unit closer to combustible materials than
<br /> In Canada, the installation of these units must comply with 6" to top and flue, 18" to sides, and 12" to bottom of
<br /> local plumbing or waste water codes and other applicable unit.
<br /> codes and with the current code CAN/CGA-6149.1, "Instal- Allow at least 12" at the rear of unit to provide ample
<br /> lation Code for Natural Gas Burning Appliances and air for combustion and proper operation of fan.
<br /> Equipment"or CAN/CGA-B149.2, "Installation Code for Pro- Provide clearance for opening hinged bottom for ser-
<br /> vicing.Burning Appliances and Equipment" vicing. See Figure 12, page 13.
<br /> 1. All installation and service of these units must be perform-
<br /> ed by a qualified installation and service agency only as Be sure the means of suspension is adequate to support the
<br /> defined in ANSI Z223.1, latest edition, or in Canada by a weight of the unit. For proper operation, the unit must be
<br /> licensed gas fitter. installed in a level horizontal position. Clearances to com-
<br /> 2. This unit is certified by A.G.A. and C.G.A., with the con- bustibles as specified above must be strictly maintained. Do
<br /> trols furnished.For replacement parts,submit the complete not install standard unit heater above the maximum mount-
<br /> model and serial numbers shown on rating plate on the ing height shown in Table 7 or below seven feet from bottom
<br /> unit. Modine reserves the right to substitute other author- of unit to the floor. (If optional outlet devices are used, see
<br /> ized controls as replacements. mounting height listed in separate tables on pages 14,16and
<br /> 17.)
<br /> 3. Unit is balanced for correct performance.Do not alter fan On all propeller units,except the PAE 300,PA 350 and PA 400,
<br /> or operate motors at reduced speed. two tapped holes(1/2-13)are located in the top of the unit to re-
<br /> 4. Information on controls is supplied separately. ceive ceiling hangers.The PAE 300, PA 350 and PA 400 have
<br /> four mounting holes. On all blower units, except the BAE 300,
<br /> 5. Modine unit heaters use the same burner for natural and BA 350 and BA 400,two tapped holes are provided in the top of
<br /> propane gases. the unit and two holes in the blower support bracket.The BAE
<br /> 300,BA 350 and BA 400 have four tapped holes in the top of the
<br /> LOCATING UNIT HEATERS unit and two in the blower support bracket for mounting.To as-
<br /> sure that flames are directed into the center of heat exchanger
<br /> CAUTION tubes, unit must be supported in a vertical position, with
<br /> 1. Units must not be installed in,potentially ex- suspension hangers "UP". Check with a level.This is im-
<br /> plosive, flammable or corrosive atmospheres. portant to the operation and life of unit.
<br /> In locating units,consider general space-heating requirements, NOTE: A pipe hanger adapter kit, shown in Figure 2, is avail-
<br /> availability of gas, and proximity to vent locations. Unit heat- able as an accessory from Modine.One kit consists of
<br /> ers should be located so heated air streams wipe exposed two drilled 3/4" I.P.S. pipe caps and two '/2-13 x 13/4"
<br /> walls without blowing directly against them. In multiple unit capscrews to facilitate threaded pipe suspension.Two
<br /> installations,arrange units so that each supports the air stream kits are required for mounting BAE 50 thru BAE 250
<br /> from another,setting up circulatory air movement in the area. models, models PAE 300, PA 350 and PA 400, and
<br /> In buildings exposed to prevailing winds,a large portion of the three kits for models BAE 300, BA 350 and BA 400.
<br /> heated air should be directed along the windward wall. Avoid One kit will pipe mount all other PAE models.
<br /> interference of air streams as much as possible.
<br /> Mounting height (measured from bottom of unit) at which
<br /> unit heaters are installed is critical. Maximum mounting
<br /> heights for standard units are listed in Table 7. (If optional
<br /> outlet devices are used, see mounting height listed in sepa-
<br /> rate tables on pages 14,16 and 17.)The maximum mounting
<br /> height for any unit is that height above which the unit will not
<br /> deliver heated air to the floor. The maximum mounting (Threaded Rod Suspension)
<br /> heights must not be exceeded in order to assure maximum
<br /> comfort.
<br /> Motors and controls used on Modine unit heaters are
<br /> designed to be used in heating applications with ambient
<br /> temperatures between 32'F and 90'F.If an application exists
<br /> where ambient temperatures can be expected to fall outside
<br /> of this range,contact factory for recommendations.
<br /> COMBUSTION AIR REQUIREMENTS
<br /> Units installed in tightly sealed buildings or confined spaces
<br /> should be provided with two permanent openings,one near
<br /> the top of the enclosure and one near the bottom. Each
<br /> opening should have a free area of not less than one square
<br /> inch per 1,000 BTU per hour of the total input rating of all ---- --
<br /> units in the enclosure,freely commmunicating with interior
<br /> areas having,in turn,adequate infiltration from the outside.
<br /> (Suspension with Pipe Adaptor Kit)
<br /> To prevent premature heat exchanger failure do not
<br /> locate ANY gas-fired unit in areas where chlorinated, Figure 2
<br /> halogenated or acid vapors are present in the Suspension methods
<br /> n}mncnticro
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