31
The fascia can now be unpacked for fitting to the unit chas-
sis. Ensure the black fir tree fasteners holding the fascia poly-
styrene are pushed in firmly in case of transit vibration. If using
branch ducting, the fascia aperture side opposite the ducting
must be blanked off. Take one of the polystyrene blanking
pieces and push it into the recess in the polystyrene fascia insu-
lation. See Fig. 35. Install the fascia by removing the inlet
grilles and filters, locating the 4 fascia mounting bolts on the
chassis through the 4 keyhole brackets on the fascia and then
sliding the fascia sideways until it locks into position.
NOTE: Up to 2 non-adjacent sides can be blanked off.
NOTE: Make sure the foam insulating strip profile on the fas-
cia matches the square and angled corners of the unit housing.
Before tightening the fascia to the unit, connect the 2 halves
of the vane motor's plug and socket connection (unit sizes 18-
36).
On microprocessor-controlled units, ensure that the display
panel cable is routed to the electrical panel and securely fas-
tened to its connector on the microprocessor circuit board.
(Refer to the unit's electrical wiring schematic.) Take care to
ensure that the connector is connected in the proper orientation
and that the wires are not routed such that they may become
trapped, cut, broken or chaffed.
The fascia can now be tightened up to the unit chassis until
a good seal is obtained between fascia and chassis.
NOTE: Do not over tighten the bolts. To do so may cause dam-
age to the fascia.
Reinstall filters in fascia. The inlet grilles can now be fitted
to the fascia to complete the installation.
Pendant Assembly Installation
1. Position the wall bracket and mark through the 2 fixing
holes (see Fig. 36).
2. Connect the 3-way female cable connector with the male
bracket connector (see Fig. 36). The cable can be routed
from either the top or the left hand side of the wall
bracket.
3. Affix the bracket to the wall.
4. Hold the bottom of the pendant controller at the top of the
wall bracket and slide the controller down the bracket to
complete the assembly.
NOTE: The pendant controller MUST be mounted in the
wall bracket and operated from this position to communi-
cate with the unit controller.
5. Plug the 2-way female connector on the other end of the
cable into the pendant connector on the cassette unit mi-
croprocessor circuit board.
6. Finally, connect the screen wire to either one of the 2 net-
work terminals marked "–". (The pendant connector and
network terminal positions are illustrated in Fig. 4.)
PRE-START-UP
See the start-up sheet example in Fig. 37. A start-up sheet is
supplied with the unit.
Pre-Start Checks —
Once installation is complete, it is
important that the following pre-start checks are made:
1. All piping is complete and insulated where necessary.
2. All fans are able to rotate freely.
3. All electrical connections (both power and control) are
properly terminated.
4. All condensate drains are installed correctly.
5. The power supply is of the correct voltage and frequency.
6. The units are properly grounded in accordance with cur-
rent electrical codes.
7. For microprocessor-controlled units, check that the dis-
play panel cable is properly connected to the micropro-
cessor main circuit board and that the jumper links are
correctly set (refer to unit wiring schematic). If the links
are set incorrectly, remove main power supply before
making any changes.
8. For microprocessor-controlled units, check that the
battery on the main circuit board is in place and properly
connected. Check also that the batteries are installed in
infrared/pendant transmitter. When a pendant transmitter
is used, ensure it is properly located on to the wall mount-
ing bracket.
Control Circuit Checks —
A thorough pipe work
check and pressure test should be performed before the unit
controls are set up.
1. Isolate the unit from the chilled water supply. A system
electrical check can now be carried out.
2. Switch on the indoor unit via the infrared/pendant trans-
mitter or wall-mounted thermostat and check that the fan
cycles correctly.
NOTE: In some models there is a 2-minute fan run on
time to remove residual heat from the unit if the unit is
switched off during the heating mode.
3. On models with microprocessor controls, check that the
high, medium and low fan speeds are operating correctly
by changing the fan speed via the transmitter.
4. On unit sizes 18-36, check that the motorized vane sweep
functions correctly by toggling the function on or off,
either via the transmitter (microprocessor-controlled
units) or via the toggle switch on the side of the electrical
panel lid (electro-mechanical units).
5. On microprocessor-controlled units, if required, check
that the built-in timer function is programmed and
operating correctly. When the timer is activated, the red
LED on the fascia display panel should be lit.
Fig. 35 — Blanking Off Fascia
a42-4027
Fig. 36 — Pendant Wall Mounting Bracket
a42-4048
IMPORTANT: Start-up and adjustment procedures should
be performed by a qualified service agency.
