TemperZone ISD 840K Guía de mantenimiento y servicio

ISD 840K, 950K

Ducted Split System

Indoor Units Installation &

Maintenance

GENERAL

These ISD indoor units are designed to be

coupled with their respective OSA outdoor

units. Units must be installed in accordance

with all national and local safety codes.

Combinations

One ISD 840K with one OSA 840RKTB

One ISD 950K with one OSA 950RKTB

Option

TZT-701 or SAT-2 Thermostat

Filters

INSTALLATION

Unpacking

The unit's supply air spigot has been

secured inside the unit for ease of shipping.

Remove the spigot and secure it in place

using the existing screws.

Positioning & Mounting

Provide sufﬁcient clearance to the access

panels.

Mount on a suitable level platform using

vibration isolators. Access to ﬁxing centres

beneath the return air spigot can be made

via the removeable bungs in the spigot's

base.

Condensate Drain

The unit has an internal sloping condensate

drain tray. The trap should have a vertical

height of at least 100 mm. The drain should

have a slope of at least 1 in 50 and must not

be piped to a level above the unit drain tray

(refer Fig.2).

For long condensate pipe runs, ﬁt a vent

pipe near the drain trap. The top of the vent

pipe must be at least 100 mm above the ISD

unit's drain tray.

It is essential that the drainage system

for the evaporator is checked by pouring

water in the drain tray and seeing that it

discharges at the end of the drain and does

not overﬂow the drain tray.

INDOOR-OUTDOOR UNIT CONNECTIONS

Refer to the relevant OSA Outdoor Unit

'Installation & Maintenance' pamphlet for

piping instructions. For wiring connections,

refer to the Outdoor Unit wiring diagram.

REFRIGERATION PIPING

Pipe Connection Sizes & Type

Liquid : 16 mm OD (5/8") sweat

Suction : 35 mm OD (11/8") sweat

The ISD is shipped from the factory with

a pressurised holding charge of nitrogen.

Immediately before removing any brazed

Fig.1 Dimensions (mm)

Not to Scale

Net

Weight

ISD 840K 372 kg

ISD 950K 383 kg

Fig. 2

NOTE

The manufacturer reserves the right to

change speciﬁcations at any time without

notice or obligation. Certiﬁed dimensions

available on request.

CORNER LOADS (kg)

MODEL W X Y Z

ISD840K 70 116 116 70

ISD950K 66 137 125 55

OPEN

DRAIN

MINIMUM

SLOPE

20 mm PER m

(1 IN 50)

100 mm

MINIMUM

200 mm

APPROX.

'U' TRAP

100 mm

APPROX.

VENT PIPE

FOR LONG

CONDENSATE

DRAIN RUNS

Condensate Drain

PROJECTION

2005

2220 OA

DRAIN 28 OD

150

1320 OA

REFRIG.

CONN’S

1000 MIN. CLEARANCE

1360

MOUNTING CENTRES

105

430

500 MIN. CLEARANCE

REFRIGERANT

CONNECTIONS

ELECTRICAL

BOX

ACCESS PANEL

FILTER ACCESS

EITHER SIDE

VERTICAL

DISCHARGE

MODEL

ELECTRICAL

ACCESS

PANEL

470

565830

305

470

535

MODEL A B

ISD840K 1070 955

ISD950K 1280 1165

pipe connection's seal, reduce holding

charge to atmospheric pressure.

Warning: failure to do so may cause injury.

Refer to the Outdoor Unit 'Installation &

Maintenance' pamphlet for evacuation

procedure and piping requirements.

ELECTRICAL WIRING

The electrical supply required (via the

Outdoor Unit) is speciﬁed on the Outdoor

Unit's wiring diagram.

Electrical work must be carried out by a

qualiﬁed electrician in accordance with local

supply authority regulations and the wiring

diagram.

In a free blow or low resistance application,

beware of exceeding the fan motor's full

load amp limit (refer Outdoor Unit's wiring

diagram).

To make the indoor fan switch off during

de-ice cycle, refer to the Outdoor Unit wiring

diagram for the appropriate changes.

INDOOR FAN SPEED

The fan motor is ﬁtted with a factory set

adjustable pitch pulley. One revolution of

adjustment is equal to 7% change in air

volume ﬂow rate.

To change the fan speed loosen the motor

mounting plate hold down screws, loosen

the pulley grub screws and turn the pulley

ﬂange the desired amount. The pulley

adjustment is locked by tightening the grub

screws in the keyways.

When setting air ﬂows ensure that the

pulleys are in alignment. Tension the belt by

adjusting the motor mounting plate.

COMMISSIONING

Indoor Unit

1. Check that the thermostat is

correctly wired and set at the desired

temperature.

2. Check that any air ﬁlter (if ﬁtted) is

clean.

3. Check that the fan runs freely without

vibration.

4. Check the airﬂow at each air outlet

(diffuser) and adjust if necessary.

5. Check condensate drain for free

drainage.

6. Run the unit in cooling mode and

heating mode.

MAINTENANCE

Weekly For First Four Weeks

1. Check air ﬁlter (if ﬁtted); vacuum clean as

necessary.

2. Check condensate drain for free

drainage.

Monthly

Check air ﬁlter (if ﬁtted); vacuum clean as

necessary.

Six Monthly

1. Check condensate drain for free

drainage.

2. Check heat exchanger coil; vacuum or

brush clean as necessary.

3. Check the tightness of the fan, motor

mountings, pullley and belt tension.

4. Check that fan motor is free running.

5. Check tightness of electrical connections.

6. Check air supply at diffuser outlets.

WARNING

This unit is designed for use ONLY with the

refrigerant HFC -410A (R410A). The use

of other refrigerants is NOT authorised or

approved by the manufacturer and may

cause operational problems such as poor

performance and efﬁciency, loss of capacity,

degradation of materials and refrigerant

leaks.

The use of ﬂammable or explosive

materials as a refrigerant creates the

additional risks of ﬁre and explosion

which may result in property damage,

personal injury or death.

NOTE

The manufacturer reserves the right to

change speciﬁcations at any time without

notice or obligation. Certiﬁed dimensions

available on request.

This pamphlet replaces the previous

issue no. 3753 dated 08/13.

Minor dimension correction.

12/13 Pamphlet No. 3753 © temperzone limited 2013

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