7
5. Re-connect the following wires on control board. See
Fig. 12.
a. Yellow compressor wire to COMP on relay Kl.
b. Power Cord wire (Ll) to L1 (brass post terminal)
on relay K2.
6. Secure control board ground wire (green) to ground
screw on control box door with power cord and chassis
ground wires. See Fig. 13.
7. Remove coil filter and install indoor coil freeze thermostat
(IFT) onto the coil with the clips provided. Route IFT wire
through the coil wiring access hole to insure wire is not
pinched when control box cover is closed. See Fig. 14.
NOTE: Loop wire through clip one time as shown in
Fig. 14 to ensure snug fit of the IFT to the coil fins.
8. Replace filter (indoor coil freeze thermostat will be locat-
ed between the coil and filter).
9. Dress wires using wire ties provided.
10. Close the control box door and secure by re-attaching
screws saved earlier. See Fig. 3.
11. Reinstall plastic control panel cover using the 2 screws
removed earlier. See Fig. 3.
Install Labels and Schematics
1. Remove old wiring schematic label and install new wir-
ing schematic label in same location. See Fig. 15.
2. Install conversion label to front of control box. See
Fig. 15.
3. Install Hi Speed/Low Speed label next to fan cycle switch
on side of control box. See Fig. 16.
NOTE: Fan cycle switch now becomes a speed selector
switch and selects whether the fan runs in high speed or
low speed. It is recommended to set the switch to low fan
speed for maximum sound comfort.
4. Install new control panel label over the old control panel
label to cover holes left by removal of old controls and
refer guests to the wall-mounted thermostat. See Fig. 15.
Wiring of Thermostat
1. Refer to installation instructions included with thermostat
for thermostat installation.
2. Route thermostat wires through grommet in remote wir-
ing access cover (supplied with kit).
3. Make thermostat wiring connection (4 wires) to remov-
able terminal block on control board, accessible through
the opening for thermostat wiring interface.
a. R to R (24 VAC)
b. C to C (common — must be connected for digital
thermostats)
c. Y to Y (compressor)
d. G to G (Fan)
4. Plug thermostat wiring terminal block back on to control
board.
5. Attach remote wiring access cover to control box cover
using 2 screws provided (where knockout was removed
for thermostat wiring interface). See Fig. 17.
Installation Completion
1. Replace front panel.
2. Restore power to unit.
PINK (L2 ON K2A1)
VIOLET (HEAT2 ON K2A1)
PLAIN POWER CORD
(L1 ON K2)
RED WIRE
(HEAT1 ON K2)
YELLOW WIRE
(COMP ON K1)
GREY FAN WIRE
BLACK WIRE FROM
REVERSING VALVE
TO RVS
(NO POLARITY)
BLACK WIRE FROM REVERSING
VALVE TO L2 ON K2A1
(NO POLARITY)
K1
K2
K2A1
Fig. 19 — Typical Wall Thermostat Interface Board Terminal Connections (Heat Pump Control Board Shown)
