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Bulletin 30-020.007

Figure 5. 4860 Drip-plate installation (horizontal)

When installing the heat module or return air plenum

module upstream of the cooling module, it is necessary

to first install a hook flange to the bottom of the cooling

coil (Figure 6).

Figure 6. Hook Flange Location

Vertical Installations. As shown in figure 2, the

modular system can also be configured for vertical up-

flow or down-flow. The arrangement of modules is

different so be sure to follow these instructions.

In most cases connecting the modules is straight

forward – just use the arrangement shown in Figure 2a.

However, if you are using a 2430, 3036 or 3642

cooling module, the top access panel of the cooling

module will need to be repositioned as shown in figure

7. For 1218 models, modules will be connected in the

horizontal configuration and the assembled unit will be

rotated to the vertical position as shown in Figure 2b.

For vertical up-flow the return air may enter through

the bottom or side return opening of the 2430, 3036 or

3642 cooling module although the bottom opening is

preferred. The 4860 cooling only has one return

opening for either horizontal or vertical applications.

The 4860 drain pan is ‘L’ shaped and will work

properly when the module is turned 90 degrees.

Figure 7. Cooling Module Configuration (2430,

3036, 3642 only)

For vertical up-flow installations, we recommend

using the vertical return plenum module (MxxxxV2).

The spacer shown in figure 2 is included with the MV

module (except for the 4860 unit, where it is included

with the cooling module). If you are not using the

MxxxxV2 module for the 2430, 3036 or 3642, you will

need to use the vertical conversion kit, which includes

the extra panels needed. You will also need to provide

a field fabricated mount for the unit.

Unico M3642 User Manual

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