Units 50DJ,DK,NK054-074
1. Unpack accessory and check that package contains the
correct parts as indicated in Table 6. Items 6 through 19
are shipped in plastic bag.
2. Remove condenser coil panel, channel cap and top cover
as shown in Fig. 15. This will allow access to the indoor
section bulkhead and condenser section wire track for
installation of the main power harness (item 20) coming
from the main control box.
3. Remove wire track covers as shown in Fig. 16.
4. Install connector(s) on bulkhead’s access knock-out holes
as shown in Fig. 17. One or 2 connectors may be used
depending on number of power harnesses (item 20).
5. Open main control box access doors and remove access
covers. This will allow access for the power harness
(item 20) and heater relay (item 7, 50DJ models only)
installation.
6. Run main power harness (item 20) from the main con-
trol box terminal block to the indoor fan section as shown
in Fig. 16. Using varnish cloth (item 11) provided, se-
cure the harness at the connector (item 14). See Fig. 17.
Make sure enough length of wire is available for con-
nection to the electric heat control box.
7. Fasten power harness to the load side of the power
terminal block (TB1) in the main control box. See
Fig. 18 - 20.
8. Install heater relays (Models 50DJ only) on main con-
trol box using 4 screws (item 8) as shown in Fig. 18.
9. Make appropriate wiring connections to the heater re-
lays as shown in Fig. 18 (units 50DJ only).
10. Remove indoor fan access door frame on the power en-
try side of the unit. This will allow ample access for
heater package (item 1) and electric heat control box
(item 2) installation.
11. Assemble the control box mounting bracket (item 6) to
the electric heat control box (item 2), using screws
(item 10). See Fig. 17.
12. Install snap bushing (item 19) on the electric heat con-
trol box as shown in Fig. 21 - 27.
13. Fasten the electric heat control box assembly to the unit
frame structure as shown in Fig. 17, using screws
(item 10).
14. Feed the power wire harness (item 20) through the elec-
tric heat control box snap bushing installed in step 12.
Connect the pigtails on the harness to the terminal block(s)
as shown in Fig. 21 - 27.
Fig. 15 — Unit Assembly and Installation Access Detail; Models 50DJ,DK,NK054-074
17
Summary of Contents for 50DK034
Page 6: ...Fig 4 Component Arrangement Models 50DJ034 044 6 ...
Page 7: ...Fig 5 Component Arrangement Models 50DK034 044 7 ...
Page 8: ...Fig 6 Component Arrangement Models 50NK034 044 8 ...
Page 16: ...Fig 14 Microprocessor Board 16 ...
Page 20: ...Fig 18 Component Arrangement Models 50DJ054 074 20 ...
Page 21: ...Fig 19 Component Arrangement Models 50DK054 074 21 ...
Page 22: ...Fig 20 Component Arrangement Models 50NK054 074 22 ...
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