TemperZone ISD 840KB-P Maintenance and service guide

ISD 840/950 KB-P (c/w Plug fan & EEV)
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.
There are two versions available:
1. Horizontal discharge (H)
2. Vertical discharge (V)
Combinations
One ISD 840KBH-P with one OSA 840RKTBG
One ISD 840KBH-P with one OSA 840RKTBG
One ISD 950KBV-P with one OSA 950RKTBG
One ISD 950KBV-P with one OSA 950RKTBG
Option
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 sufcient clearance to the access
panels.
Mount on a suitable level platform using
vibration isolators. Access to xing centres
beneath the return air spigot can be made
via the removable 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, t 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 overow 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.
Fig.1 Dimensions (mm)
Not to Scale
Net
Weight
ISD 840KB-P 402 kg
ISD 950KB-P 453 kg
Fig. 2
NOTE
The manufacturer reserves the right to
change specications at any time without
notice or obligation. Certied dimensions
available on request.
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
2007
2220 OA
75
75
DRAIN 28 OD
150
60
1260 OA
WX
Y
Z
REFRIG.
CONN’S
1000 MIN. CLEARANCE
1360
MOUNTING CENTRES
105
430
500 MIN. CLEARANCE
REFRIGERANT
CONNECTIONS
ELECTRICAL
BOX
ACCESS PANEL
FILTER ACCESS
EITHER SIDE
ELECTRICAL
ACCESS
PANEL
A
B
2005
50
470
110
305 1610
712
357
MODEL A B
ISD 840K 1070 960
ISD 950K 1280 1165
CORNER LOADS (kg)
W X Y Z
19 31 184 168
58 84 156 155
MODEL
ISD 840KB-P
ISD 950KB-P

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
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 specied on the Outdoor
Unit's wiring diagram.
Electrical work must be carried out by a
qualied 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 speed is continuously variable
via the 0-10V DC control signal applied
between terminals 'FAN GND' and '0–10V'.
Once the maximum design air ow has been
set (refer Commissioning), the fan speed
can be controlled as follows:
1. ON/OFF
a.) Connect 24V a.c. control signal to
either 'LOW 24', 'MED 24V' or 'HIGH
24V', and 'COM 24V',
or
b) Wire a N/O control relay contact (or
switch) between 'FAN 10V' and '0–10V'.
2. Variable Speed
Apply an external variable 0–10V DC
control voltage to '0–10V' terminal.
Connect 0V reference to 'FAN GND'.
COMMISSIONING
Indoor Unit
1. Check that the thermostat is
correctly wired and set at the desired
temperature.
2. Link terminals 'FAN 10V' to '0–10V'.
Adjust the 'POT' to deliver your
maximum design air ow. Remove link
'FAN 10V' to '0–10V' when fan speed
has been set.
2. Check that any air lter (if tted) is
clean.
3. Check that the fan runs freely without
vibration.
4. Check the airow 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 lter (if tted); vacuum clean as
necessary.
2. Check condensate drain for free
drainage.
Monthly
Check air lter (if tted); 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.
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 efciency, loss of capacity,
degradation of materials and refrigerant
leaks.
The use of ammable or explosive
materials as a refrigerant creates the
additional risks of re and explosion
which may result in property damage,
personal injury or death.
NOTE
The manufacturer reserves the right to
change specications at any time without
notice or obligation. Certied dimensions
available on request.

JG
291-044-687-ENG
05/03/19
GND
10V
POT
IFM1
FRC
FR
Voltage In V
A
IFM Amps (max)
FRC Fan Relay Coil
IFM Indoor Fan Motor
Model ISD
FR Fan Relay
POT Potentiometer (max speed)
D1
24V
BLACK
WHITE
RED
IFM2 IFM3
A
950-P
11.4
380/415
Visit: www.temperzone.biz for client wiring diagrams.
Power In
Note: For external '0-10v' control, feed
0-10V control signal to terminal '0-10V'
and 'FAN GND'
Set POT for maximum fan revs required
when either FR is closed or 10V is applied
to 0-10V terminal.
FAN GND
COM
MED
LOW
HIGH
0-10V
FAN E1
COMP1
HEAT
COMP1
24V
IFM1
IFM1
E1
11 14
M
3
ISD 950KBV-P SP EEV
WIRING SCHEMATIC
AMOD FROM 291-035-925-ENG
05/03/19
JG
IFM2
M
3
GND
10V
D1
24V
IFM2
E1
11 14
IFM1 11 IFM2 14

10/20 Pamphlet No. 4141 © temperzone limited 2020