Carrier 38TA, 40TA, 40TY, 40BZ, 38TY Installation Instructions Manual

50TA/TZ/TY/YZ
40TA/TZ/TY/BZ-38TA/FZ/TY/BZ

Electric Heaters

Installation instructions

NOTE: This manual refers to accessories and options with
„D“ as the nal letter in the ordering code.

2

1 - SAFETY CONSIDERATIONS

Installation, servicing and maintenance of air conditioning
equipment can be hazardous due to system pressure and
electrical components. Only trained and qualied service
personnel should install, start-up or service air conditioning
equipment.

Untrained personnel can perform the basic maintenance
functions of cleaning and replacing lters. All other operations
should be performed by trained service personnel. When
working on air conditioning equipment, observe precautions in
the manual and stickers on the unit and other safety precautions
that may apply locally, regionally and nationally, as well as all
applicable laws.

Follow all safety codes. Wear safety glasses and work gloves
suitable for the work carried out.

Disconnect the unit electrically at the main switch before
carrying out any work inside the unit. All procedures that do not
require unit operation, as well as all cleaning and maintenance
operations must be done with the unit de-energised.

WARNING: Before performing service or maintenance
operations on the unit turn off the main power switch to the
unit. Electric shocks could cause serious injuries.

2 - RECEIVING THE ELECTRIC HEATER

2.1 - Inspect the shipment

Inspect the shipment to check for transport damage. If there are
signs of damage the transport managers must inspect the
component before it is installed. Immediately le a claim with
the shipping company or note the damage in the shipping
documents. The manufacturer is not responsible for damage
incurred during transport.

Check that all components listed on the shipping documents
have been supplied. If any item is missing, immediately inform
the nearest Carrier ofce and make a note on the shipping
documents. To prevent damage and/or loss keep all components
in their original packaging until they are installed by qualied
personnel.

3 – UNIT INSTALLATION

The electric heaters (accessory/option) are supplied for installa­tion in the units and have not been factory-installed; they must be
installed as described in this manual. The manual only applies
to heaters with the ordering code ending in the letter „D“ (e.g.
X40TY04B09D (50TY/YZ 024 with 1.5 kW capacity).

A - The electric heaters are always installed outside the unit

and are xed to the panel of the indoor fan air discharge,
as shown in Figs. 1, 2 and 3.

B - Whether the unit is installed or not, the heater must be

attached by xing it to the panel of the indoor fan outlet,
using the four threaded sheet metal screws supplied with
the heater. The electric heater is installed so that the
control box is above or below depending on the position
of the indoor fan air discharge outlet (see Figs. 2 and 3).

C - If the unit is already installed and connected to the air

discharge duct, this must be cut in accordance with the
depth of the heater so that this can be installed. Next
attach the duct to the heater.

D - The heater thermal protection devices must always be

located in the upper part, whatever the position of the
heater control box.

E - The heater must be xed to the unit as shown in the

following gures:
Fig. 4: View of the electric heater
Fig. 5: View of the indoor fan outlet panel
Fig. 6: View of the installation of the heater in the unit

Fig. 1 - Front view

Fig. 2 - Side view: Unit with indoor fan situated on top

of the panel

Fig. 3 - Side view: Unit with indoor fan situated below

the panel

Indoor fan air discharge panelAir intake lter

UnitElectric heater

Indoor fan

Air ow

Indoor fan

Electric heater

Control box

Unit

Control box

Air ow

3

Fig. 4 - Electric heater (front view)

F - Changing the electric heater control box from its standard

position as supplied to the alternative position is possible
if the indoor fan air discharge is located in the lower part
of the casing.

Proceed to change the control box position so that it is located
in the upper part when mounted in the unit (see Fig. 3).

Figs. 4, 5 and 6 show the heater with the control box in the
lower part and the thermal switches in the upper part. To
change the position it is enough to remove the four screws that
secure the frame of the electric heaters and the thermal
switches as shown below.

Fig. 7

Fig. 5 - Fan panel (front view)

The electric heater must be xed to the discharge air panel.
Align holes 1 of the heater with holes 1 of the panel. Secure
the heater as shown in Fig. 6, using the screws supplied.

Fig. 6 - View of the unit and electric heater

1 Holes and xing points of the electric heater to the unit,

with xing screws.

Fig. 8

Thermal switches

Thermal switches

Control box

Once the electric heater frame and the thermal switches have
been disconnected, turn the heater 180°, removing the strip that
covers them.

Insert the thermal switches in the hole below the control box so
that the manually reset thermal switch is accessible.

Gather the connection cables from the heaters and thermal
switches so that they are protected and hidden by the frame that
has been removed.

Re-insert the screws that were previously removed.

The control box and the thermal switches must be located in
the same zone of the heater, contrary to what is shown in Figs.
4 and 7 so that they can be installed in the unit when the fan is
located with its air discharge section in the lower part of the
unit (Fig. 3).