INSTALLATION OF EXTERNAL MOUNT ROOFTOP UNITS (MODELS 1952 & 1953)
FIGURE 1 – Model 1952/1953 |
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| Safety Interlock Switch | |
Lamp | Ballast | |
Fuse | ||
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| Lamp | |
| Retaining | |
Unit Base | Bracket | |
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| Lamp Base | |
| Lamp Socket | |
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DETERMINE MOUNTING LOCATION
Determine a mounting location for the lamp. Use the criteria below to select a proper location:
a. The lamps are intended for evaporator coil treatment. See Figure 2 for typical installation. If a single Lamp cannot illuminate the majority of the evaporator coil, two or more units might be required as shown. To the extent possible, the Lamp(s) should be centered on the coil (or section thereof) being illuminated.
b. Install lamp in location that prevents exposure of plastics, rubber, paper, and other
See CAUTION statements at beginning of manual for more details.
c. To protect lamp, do not install lamp below any source of water.
d. Install units so that Lamp is at least 3 in.,
but not more than 36 in., away from evaporator coil surface.
e. Install lamp in a location that can be easily accessed. Allow clearance to slide lamp in and out of rooftop unit. Model 1952 lamp is 24 in. and Model 1953 lamp is 32 in.
FIGURE 2 – Typical Installation of Model 1952/1953 |
Blower |
Evaporator Coil |
f. Be certain the area in the equipment where you intend to drill and cut is free of any obstructions or components that would be damaged by the installation or interfere with the installation.
g. While keeping these guidelines in mind, note that the more direct exposure the coil and drain pan receive, the greater the benefit the lamps will have.
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