Carrier 38TY Series Installation Instructions Manual

Brand: Carrier

Model: 38TY Series

Category: Split-system air conditioners

Type: Installation Instructions Manual

This manual is also suitable for

40BZ Series

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.

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 installa-

tion 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

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

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).

IMPORTANT: Whenever the electric heater power supply is

downstream of the unit main disconnect switch (Figs. 9, 10

and 11) it is not permitted to install a heater of higher capacity

(kW) than indicated in tables 1 and 2, that are the standard

heaters.

C - If the unit has been installed and an electric heater is to be

connected whose control power supply is not connected via

the main unit disconnect switch or if it is desirable to have an

independent power supply connect and protect it as follows:

- Cables of adequate wire section

- Fuses F1 with a current that complies with the heater

capacity (kW) installed.

- A bipole or tripole disconnect switch, depending on

the voltage with the necessary current (A).

- Locate a thermal-magnetic disconnect switch with

current (A) in accordance with tables 3 and 4 in the

electric heater control box, as described in chapter 5.2.

Standard heater connection

Fig. 9

4 - ELECTRIC HEATER CAPACITIES (kW)

The electric heater capacities for cooling models or additional

heater capacities for heat pumps, according to valid Carrier

publications, are:

Table 1 – Cooling only models

Unit Capacity, kW

50TA/TZ 024 4.0 or 4.6

38TA/FZ-40TY/BZ 024

50TA/TZ 036-048 6.0 or 9.0

38TA/FZ-40TY/BZ 036-048

50TA/TZ 060 9.0 or 13.5

38TA/FZ-40TY/BZ 060

50TA/TZ 072 and 084 12.0 or 18.0

38TA/FZ-40TY/BZ 072

38TA/FZ-40TY/TZ 084

Table 2 – Heat pumps

Unit Capacity, kW

50TY/YZ 024 1.5 or 2.0

38TY/BZ-40TY/BZ 024

50TY/YZ 036-048 3.0

38TY/BZ-40TY/BZ 036-048

50TY/YZ 060 4.5

38TY/BZ-40TY/BZ 060

50TY/YZ 072 and 084 6.0

38TY/BZ-40TY/BZ 072 and 084

Supplied with the voltages indicated in the price list, technical

data, wiring diagrams and applicable manuals.

5 – ELECTRICAL CONNECTIONS

Before the denitive installation of the electric heaters in the

unit a number of operations must be carried out.

5.1 – Power supply

The electric heater power supply is suitable for connection to

the unit control and power wiring box and to the general

disconnect switch of the unit.

The disconnect switch in the cooling only and heat pump units

is designed to support the current (A) of the components

connected to it.

Therefore the power supply of the electric heaters must be

connected downstream of the disconnect switch, as shown in

the unit wiring diagrams (see Figs. 9, 10 and 11).

Possible connections:

A - If the electric heater has not been installed and must be

incorporated, fuses F1 and the power cable section (L1,

L2, L3, N) are sufcient for the maximum power

consumption in cooling and heating modes.

B - If the unit has been installed and supplied with the electric

heater incorporated please check if fuses F1 and the power

cable section (L1, L2, L3, N) are sufcient for the new

power consumption. Remember that the unit will operate

in heating mode when the electric heater is installed.

Cooling only models = indoor fan plus electric heater

power consumption

Heat pump models = compressor plus indoor and outdoor

fan plus electric heater power consumption.

Fig. 10

Fig. 11

Legend:

Q1 - Unit main disconnect switch (incorporated)

F1 - Fuses to be eld-supplied by the installer

----- Wiring in the unit

----- Field wiring

NOTE: The unit main disconnect switch has been designed to

support the current (A) of the electric heaters that are

installed. It is not necessary to change it.

Electric heating

To the unit

Electric heating

To the unit

Electric heating

To the unit

5.2 – Thermal-magnetic disconnect switch

The following thermal-magnetic disconnect switches must be

incorporated in the electric heater control box (curve C). The

current must comply with the capacity (kW) of the electric

heater installed.

The thermal-magnetic disconnect switches are as follows and

match the models and capacities of the electric heaters in tables

3 and 4.

Table 3 – Cooling models

Power

supply

V-ph-Hz

Letter in wiring

diagram

50TA/TZ – 38TA/FZ – 40TA/TY/TZ/BZ

024 036 042-

048

060 072 084

400-3-50 F18 thermal-

magnetic switch (A)

16 16 16 25 25 32

230-1-50 25 32 - - - -

230-3-50 - 25 40 - 50 50

400-3-50 R3 electric heater

total (kW)

6 6

13.5

12 18

230-1-50 4 6 - - - -

230-3-50 - 6 9 - 12 18

Table 4 – Heat pumps

Power

supply

V-ph-Hz

Letter in wiring

diagram

50TY/YZ – 38TY/BZ – 40TY/BZ

024 036 042-

048

060 072-

084

400-3-50 F18 thermal-

magnetic switch (A)

6 10 10 10 16

230-1-50 16 16 - - -

230-3-50 - 16 16 16 20

400-3-50 R3 electric heater

total (kW)

1.5 3 3 4.5 6

230-1-50 2 3 - - -

230-3-50 - 3 3 4.5 6

These thermal-magnetic switches are located in the control box

of the electric heater, as shown in gures 12 and 13.

Fig. 12

Fig. 13

Thermal switch

Once installed in the control box, they must be connected to

contactor K8 in accordance with the wiring diagram. Afterwards

they must be connected to the main unit control box with the

power supply cables.

5.3 - Power supply cables

This manual refers to packaged units. The power supply cables

used for split system vary, units depending on the distance

between the indoor and outdoor units (maximum voltage loss

5%). The standard cables for the power supply in packaged

units are:

Fig. 14 - 230 V single-phase heaters with 2, 3, 4 and

6 kW capacity

F18 installation site

Dimensions, mm

kW A

2 and 4 3000

3 and 6 3200

Wire section, mm2

kW L1 N

2 and 3 2.5 2.5 2.5

4 4 4 4

6 6 6 6

Colour code:

L1 = Black

N = Blue

= Green/yellow striped

2 = Flexible pipe, type PG 13.5

5.4 – Power wiring cable

The connection cable between the electric heater control box

and the unit control box must be connected to ensure control

during operation.

Cables corresponding to the unit wiring diagram must be

connected between terminals 14, 19, 5 and 12 of the terminal

strip in the electric heater control box and in the unit control

box. For the packaged 50TA/TY units these have the following

characteristics:

Fig. 17

Dimensions, mm

50TA/TZ

50TY/YZ

kW A

024 1.5-6 3000

036-060 3-4, 5-6,

9-13.5

3900

072-084 6, 12, 18 5000

Wire section, mm2

kW 230 V, 3 ph 400 V, 3 ph

L1, L2, L3 L1, L2, L3,

1.5 1.5 1.5

3 1.5 1.5

4.5 2.5 1.5

6 4 1.5

9 6 2.5

12 10 4

13.5 10 4

18 16 6

Colour code:

L1, L2, L3 = Black

= Green/yellow striped

2 = Flexible pipe, type PG 13.5 for all capacities except 12 and 18 kW

– these are type PG 16

NOTE: The wire section is suitable for ambient temperatures

below 50°C.

NOTE: All data applies to packaged units. For split system

units the data depends on the distance between indoor and

outdoor units.

These cable assemblies must be run from the thermal-magnetic

switch of the electric heaters inside the control box to the power

and control box for the unit, as shown in the unit wiring dia-

grams. Cable Ⓐ, Fig. 16, is taken out of the casing conduit of

the electric heater control box Ⓐ, Fig. 18, and passed through a

Fig. 16

Fig. 15 - 230 V three-phase or 400 V three-phase

heaters with 1.5, 3, 4. 5, 6, 9, 12, 13.5 and 18 kW

capacity

Dimensions, mm

50TA/TZ

50TY/YZ

024 3300

036-060 3900

072-084 5000

1 Number of the connection terminal and cable

2 Cables:

Section = 1 x 1 mm2

Colours: No. 5 and 12 = Grey

No. 14 = Black

No. 19 = Blue

3 Flexible pipe, type PG 7

4 Terminals:

Flag type (4 off)

Flag terminal protector (4 off)

Rod type, 0.75-1 mm2 (4 off)

unit power and control box through pre-punched hole Ⓓ, as

shown in Figs. 16, 18 and 19.

5.5 – Thermal protection

The electric heater includes two thermal protection devices,

one with manual reset and the other with automatic reset.

The rst one must always remain accessible and both must be

located in the upper part of the electric heater. Once connected,

this is in the air discharge of the indoor fan.

NOTE: The heating coil assemblies (accessory/option) can be

supplied with all required connection parts (thermal-magnetic

switches, cables etc.). In this case only the installation in the

panel shown and the electrical connection as shown in the

wiring diagram are required.

If the electric heater is supplied installed in the unit, no

additional operation is required, except in split system units

where the connection cables between the electric heater in the

indoor units must be run to the power and control box in the

outdoor unit.

NOTE: This manual refers to accessories and options with

„D“ as the nal letter in the ordering code.

WARNING: The power supply must always meet applicable

local, national and EU standards.

Fig. 18

Fig. 19

Legend

F18 - Thermal-magnetic switch to be installed in the electric heater

control box (if not in the electric heater).

K8 and K12 - Contactors

R3 - Electric heaters

F20 - Thermal switch with manual reset

F21 - Thermal switch with automatic reset

_____ - Wiring included

-------- - Wiring eld-supplied

Order No: 15050-20, 05.2007 - Supersedes order No: 13452-76, 10.2006 Manufacturer: Carrier, Spain.

Manufacturer reserves the right to change any product specications without notice. Printed in the Netherlands on chlorine-free paper.

Fig. 20 - Wiring diagram for the connection of the electric heaters (models 50TA/TZ/TY/YZ, 38TA/FZ/TY/BZ,

40TA/TZ/TY/BZ)

To the unit control box To the unit control box

400 V/3 ph ~/50 Hz version

(available with 230 V/3 ph ~/50 Hz

on request)

Unit terminals

Power wiring connection, common

for all voltages and models

230 V/1 ph ~/50 Hz

version

NOTE: If the electric heater is installed in the unit the

existing jumper between terminals 5 and 12 in the control box

must be removed once it is installed (see wiring diagram).

(Refer to the unit wiring diagram that is supplied with the unit.)

Carrier 38TY Series Installation Instructions Manual

Brand: Carrier

Model: 38TY Series

Category: Split-system air conditioners

Type: Installation Instructions Manual

This manual is also suitable for

40BZ Series

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Carrier 38TY Series Installation Instructions Manual

This manual is also suitable for

Carrier 38TY Series Installation Instructions Manual

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