Thomas & Betts LDAP 1200 warranty Heater Location cont’d, Sound Data, Location Recommendations

10.Heater Location (cont’d)

Sound Data

Sound Chart - Model LDAP

Model								DISTANCE
LDAP		20 ft (6.1M)			25 ft (7.6M)			30 ft (9.1M)			35 ft (10.7M)			40 ft (12.2M)
Size	db		Pa	µbar	db	Pa	µbar	db	Pa	µbar	db	Pa	µbar	db	Pa	µbar
400	69		0.058	0.580	65	0.037	0.371	62	0.026	0.258	60	0.019	0.189	57	0.015	0.145
800	72		0.080	0.800	68	0.051	0.512	65	0.036	0.356	62	0.026	0.261	60	0.020	0.200
1200	74		0.100	1.000	70	0.064	0.640	67	0.044	0.444	64	0.033	0.327	62	0.025	0.250
µbar =	microbar			Pa = Pascal

Location Recommendations

NOTE: Venting requirements may affect location. Consult requirements in Paragraph 24 before making final determination.

Hazards of Chlorine

For best results, the heater should be placed with certain rules in mind. In general, a heater should be located from 15-40 feet (4.6-12.2 M) above the floor. If two or more heaters are installed in the same room, a general scheme of air circulation should be maintained for best results.

Suspended heaters are most effective when located as close to the working zone as possible, and this fact should be kept in mind when determining the mounting heights to be used. However, care should be exercised to avoid directing the discharged air directly on the room occupants.

Partitions, columns, counters, or other obstructions should be taken into consider- ation when locating the heater so that a minimum quantity of airflow will be deflected by such obstacles.

The presence of chlorine vapors in the combustion air of gas-fired heating equipment presents a potential corrosion hazard. Chlorine found usually in the form of freon or degreaser vapors, when exposed to flame will precipitate from the compound, and go into solution with any condensation that is present in the heat exchanger or associated parts. The result is hydrochloric acid which readily attacks all metals including 300 grade stainless steel. Care should be taken to separate those vapors from the combus- tion process. This may be done by wise location of the heater with regard to exhaust- ers or prevailing wind directions. Chlorine is heavier than air. Keep these facts in mind when determining installation location of the heater in relation to building ex- haust systems.

11.Hanging or Mounting the Heater and Installing Louvers

Weight (lbs/kg)

Size	400	800	1200	Before installing the heater, check the supporting
lbs	375	805	1195	structure to be used to verify that it has sufficient load-
kg	170	365	542	carrying capacity to support the weight.

Suspending the Heater

Locate the hardware kit shipped with the heater. The kit contains spring nuts, hex nuts, “U”-shape fittings, and lock washers for suspending the heater. It also includes louvers and the compression springs needed to install them.

When the heater is lifted for suspension, support the bottom of the heater with the crate bottom. If the bottom is not supported, damage could occur. Before hanging or mounting, verify that any screws used for holding shipping brackets were re-installed in the cabinet.

WARNINGS: Check the supporting structure to be used to verify that it has sufficient load carrying capacity to support the weight of the heater. Suspend the heater only from the threaded nut retainers or with a manufacturer provided kit. Do NOT suspend from the heater cabinet.

See FIGURE 1A or 1B for the appropriate hanging locations, and install the ½”-13 spring nuts in the strut that is attached to the top of the unit. Comply with the require- ments in FIGURE 4A when using threaded rod. If ordered with swivel connectors for 1” pipe, Option CK10, attach the swivels to the spring nuts according to illustra- tion in FIGURE 4B and suspend with 1” pipe.

Form RZ-NA-I-LDAP, P/N 207733 (Rev 2), Page 8