Adjusting Temperature Limiting Device; Electrical Service; Installing Room Cabinet - McQuay PTAC 106018561 Installation & Maintenance Data

14. Set cycle switch (located on the bottom front face of the
control box) for constant or cycle indoor fan. With the
switch in "Cycle" position, the indoor fan will shut off when
the thermostat de-energizes cooling or heating.
Optional Adjusting Temperature Limiting Device
As an option, a temperature limiting device can be furnished
to allow the owner to set the minimum and/or maximum
temperature selections. Adjust this device as follows:
1. Remove temperature knob and metal cover plate.
2. Loosen the hold-down screw with Phillips screwdriver.
3. Adjust cams to attain desired rotation limit.
All wiring should be in accordance with all local and National
Electrical Code requirements.
Units are supplied with an attachment cord and plug which
exit from the bottom of the conditioner on the control side. The
cord for 115V, 208V and 230V has a usable length of 72"
(1829mm) from where it exits the conditioner. The use of
extension cords to increase the length of the plug/cord set is
not recommended. Units to operate on 265V are supplied
The room cabinet is the last piece to install. The following
instructions assume all components (wall sleeve, heat sec-
tion, louver and chassis) have been installed, piped and
anchored. All major room construction should also be com-
plete so as not to damage the room cabinet after it has been
installed. Attaching the room cabinet can be completed as
follows:
1. Remove the two (2) steel mounting brackets and screws
from the bag enclosed and install them to the heat section
(see Figure 16).
2. Adjust the bracket forward or backward so that when the
room cabinet is installed, the discharge grille seals against
the flanges of the heat section. Final adjustment of the
bracket will occur after the room cabinet has been set in
place. There is a 1" (25mm) adjustment in the mounting
brackets to accommodate any variations in the wall.
3. Finger tighten the hold-down screw on the mounting
bracket against the heat section bracket.
4. Repeat procedures 1 through 3 for the opposite side.
After the brackets have been installed, the room cabinet
Figure 16.
Room Cabinet
Mounting Bracket
Hold-down
Screw
Wall Sleeve
15. Set the temperature limiting device to the desired range
4. Tighten hold-down screw.
5. Replace metal cover and temperature knob.
and/or maximum cool to check temperature limits. Repeat
procedure listed above until desired temperature limitations
are achieved.

Electrical Service

with a 14" (356mm) cord for connection to a subbase.
circuit ampacity and overcurrent protection. Time delay,
overcurrent protection devices are recommended to prevent
unit damage and to avoid nuisance tripping.
or recessed in the wall so it is concealed by the conditioner
overhang and kickplate.

Installing Room Cabinet

should be lifted into place.
1. Firmly grasp the room cabinet and lift it over the heat
2. Align the notches of the room cabinet on the wall sleeve
3. Push the mounting bracket backward against the room
4. Screw the cabinet to the wall using the screws provided.
5. Loosen the four (4) wing nuts on the kickplate and adjust
6. Tighten the wing nuts firmly.
7. Wipe any smudges or dirt off the room cabinet using a mild
Heating Coil
Hydronic
Heat
Section
of thermostat operation. (See page 9 for details on tem-
perature limiting device.)
Once unit is in operation, rotate knob to maximum heat
The attachment plug size should be used to determine the
Outlets are generally located beneath the conditioner, on
section. There are notches in the back flanges of the room
cabinet that rest on the wall sleeve to assure it is centered.
and firmly push the cabinet downward until it slips behind
the room cabinet mounting brackets and seats on the wall
sleeve (see Figure 17).
cabinet flange and securely tighten the hold-down screw.
There are two (2) screw holes provided on each side
located on the inner flanges of the room cabinet.
the kickplate the required distance to the floor.
cleaner and a soft cloth.
Insulation
Lintel
Wall Sleeve
Outdoor Louver
Interior Wall
(Gypsum
Mounting
Gasket
Bracket
Heating Coil
Hydronic
Heat
Section
Room
Cabinet
IM 422-4 / Page 9 (Rev. 5/99)