FILTER RACK ACCESSORY INSTALLATION

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					                                                                                 FILTER RACK ACCESSORY
INSTALLATION                                                                     FOR USE WITH N-AH & N-VS
                                                                                      AIR HANDLERS
INSTRUCTION                                                 Supersedes: Nothing                                        535.01-N4.4V (1297)

                                                                                                                                   035-14330
                                  MODELS 1FR0617, 1FR0621 thru 1FR0624



GENERAL                                                                   UPFLOW / HORIZONTAL APPLICATIONS
This instruction covers the installation of the following filter          Note: This application allows for the use of the built in filter rack
racks with an N-AH or N-VS modular air handlers and G+FD                  beneath the coil or the use of an external filter rack. For use
full-cased coils.                                                         with an external filter rack, follow the instructions below.
                1FR0617,      1FR0621,       1FR0624
                                                                          1. Position coil above filter rack on filter rack flanges. Filter
The accessory consists of the metal filter rack, a tie-plate, a
                                                                             access door should face front.
high velocity permanent type one inch thick filter and a bag of
8 screws.                                                                 2. Fasten tie-plate on back of coil and filter rack using 6 screws
There are three filter sizes to match the three basic cabinet                provided.
sizes as shown in Table in Figure 2.
                                                                          3. Also use 2 screws to secure front of filter rack through holes
                                                                             provided in coil toe plate and filter rack top front panel.
INSTALLATION
The Filter Rack can be fastened to the coil casing or air handler         4. Fasten return duct to filter rack.
inlets as shown in Figure 1 below. In all application positions
the filter rack is fastened to air handler or coil casing with eight
No. 10 x 1/2" sheet metal screws provided. Install as follows:            BLOWER ONLY APPLICATIONS

DOWNFLOW APPLICATIONS                                                     1. Position blower above filter rack on filter rack flanges. Filter
                                                                             access door should face front.
1. Position filter rack above coil on coil flanges. Filter access
   door should face front.                                                2. Fasten tie-plate on back of coil and filter rack using 6 screws
2. Fasten tie-plate on back of coil and filter rack using 6 screws           provided.
   provided.
                                                                          3. Also use 2 screws to secure front of filter rack through holes
3. Also use 2 screws to secure front of filter rack through holes            provided in front flanges of blower and filter rack.
   provided in front flanges of coil and filter rack.
                                                                          4. Fasten return duct to filter rack.
4. Fasten duct to filter rack duct flanges.



                     AIR HANDLER / COIL APPLICATIONS                                                                         = FILTER

      UPFLOW                  DOWNFLOW                                          HORIZONTAL




                                                                            *


                                                                       * Requires Horizontal Pan                               UPFLOW




                                                                       BLOWER ONLY APPLICATIONS

FIGURE 1 - APPLICATION POSITIONS
                                                                                                                                                   1/2"
                                                                                                                                3/4"
    1/2 "
                                                                                                     1-1/2 "
                                                                                                                         2 " MAX.
                                                                                                                         THICK                     3-1/2"
                                                  C                                                                      FILTER
                                                                     D
                                                                                                                                              1"


                                                                                                                            7/8"
                                               19 -7/8"
                                                                                                             3 -1/2 "              1/2"
                                                                         B




                                                                                                                              1/2 " (All four sides)
                                     22 "

                                                                                         A

                                                                                                                          16 - 1/2"
                                                                                                               21 "         20"
                                                                                                                          23 - 1/2"

                                                                                                           22 "                           A


                                                                                        ACCESSORY FOOTPRINT



            All dimensions are in inches. They are subject to change without notice. Certified dimensions will be provided upon request.

     Filter Rack                                                                  Rack Dimensions Inches                 Filter Dimensions Inches
                                             Used With
        Model                                                              A           B         C             D        Width      Length Thickness
      1FR0617                  N-AHB08, N-AHB12, N-VSB12                 17-1/2      16-3/8    15-1/2          21       17-1/2       22        1
      1FR0621                      N-AHC16, N-VSC16                        21        19-7/8      19            21        21          22        1
      1FR0624                  N-AHD14, N-AHD20, N-VSD20                 24-1/2      23-3/8    22-1/2          21       24-1/2       22        1



FIGURE 2 - FILTER RACK DIMENSIONS




Subject to change without notice. Printed in U.S.A.                                                                                                    535.01-N4.4V
Central                    Post Office                York
Environmental              Box 1592                   Pennsylvania
Systems                                               17405-1592

				
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