TemperZone HWP 96 Series Maintenance and service guide




 (c/w EC Motor and UC7 Controller versions)



 - A general designation which
applies to all versions (refer g.1)
These HWP units must be installed in
accordance with all national and local safety
codes.

The following items are available as optional
extras:
1. Condensate Lift-Pump Kit.
2. Filter Box.
A remote return air temperature sensor is
supplied on all models except for
HWP 77/96 CEKSYD models. Optional
sensors are available; refer page 3.
High pressure hoses (600 mm long) c/w
tting and spring mounts are supplied as
standard.

As air ltration requirements vary, lters are
not supplied with the unit. Filters should
ideally be installed on the return air side of
the unit, no closer than 500 mm from the
back of the unit and easily accessible for
cleaning. To maximise the efciency of air
ow, the return air lter should be twice the
area of the HWP unit's return air spigot/s. If
efciency is less of a concern a Filter Box is
available.
The Filter Box is installed by unscrewing
the return air spigot and replacing it with the
Filter Box's lter-integrated spigot. The lter
may be accessed from either side of this
spigot. This box adds 245 mm to the overall
depth of the unit.


HWP units are designed to be used with
simple, short duct layouts. Units should
be located as close to the space to be air
conditioned as acoustic criteria allows; refer
to Fig. 6 for application considerations.
When determining the position of the air
conditioner, allow adequate space around
the unit to facilitate future servicing and
maintenance. Ensure there is enough
working space in front of the electrical
access panel. Allow adequate clearance for
the lter (optional) to be withdrawn to its full
length.





 Not to Scale
C - Cooling only
CE - Cooling only with electric heat
R - Reverse cycle
K - Refrigerant R410A
S - Single phase power supply
Y - EC fan motor
T - Three phase power supply
D - Integrated Thermostat
N - Protection board
H
H - Hideaway
W - Water Sourced
P - Packaged
Divide by 10
to get approx.
nominal
Capacity in
kilowatts
Series Size Type
Nomenclature
CW P 7 7 K
e.g. S Y D

1179
HANGING CENTRES
20 X 9 SLOTS
1305
OVERALL
ACCESS
PANEL
DRAIN 19 OD
WATER CONN'S:
TWO BSP MALE
19 mm (3/4")
ELECTRICAL
BOX
ELECTRICAL
CONDUIT
HOLES
710
SUPPLY AIR SPIGOT
200
440
HANGING
CENTRES
SLOPING DRAIN TRAY
416
OVERALL
480
OPTIONAL
SPRING MTG
CENTRES
1255
OPTIONAL
SPRING MOUNTING CENTRES
70
85
75
90
OPTIONAL
R/A FILTER BOX WITH
FILTER ACCESS
EACH SIDE
OPTIONAL
FILTER BOX
698
(HEIGHT = 340)
IN
OUT
(WATER)
30
725
OVERALL
65
245
PROJECTION

HWP 77 117 kg
HWP 96 120 kg


If a more rigid installation can be tolerated,
then suspend the unit from four threaded
rods using locknuts (not supplied), as shown
in Fig. 4.
Mount top of the unit level as it comes with a
sloping drain tray. This tray is not reversible,
i.e. the drain exit can only be at the opposite
end to the compressor.
The unit must be mounted with sufcient
height for the condensate drain to be
'U' trapped outside the unit (see gure 5).
Alternatively t a condensate lift-pump.
The drain line must not be piped to a level
above the drain tray.
When nally positioned, tighten the lock
nuts on the mounting rods to give a rm
installation (see Fig. 3).

The drain line must be maintained at least
19 mm ID along its full length. A vent pipe is
recommended for drain pipes longer than
4 m (refer gure 4). Check drain by pouring
water into the drain tray and ensuring
that it clears. Failure to adhere to these
instructions could cause ooding.

The HWP unit's IN and OUT water
connections are male pipe threaded (refer
Fig. 1). The two 600 mm
exible high pressure water hoses supplied
have female pipe threaded connections at
each end. Maximum water pressure for
each hose is 1720 kPa (250 psi). The HWP
unit alone, excluding hoses, will withstand
4480 kPa (650 psi).
Poor quality water supply must be pre-
ltered and it is essential that adequate
water treatment is maintained, particularly
where open cooling towers are used.
: It is required that the water supply
system be tted with a water ow switch and
water pump safety interlock. These items
prevent the HWP units from going into fail
safe lockout status due to a loss of water
ow. Failure to install the above items would
require the resetting of all HWP units in the
system - either by breaking the power supply
to each unit or breaking the thermostat
control circuit.
HWPSR units require a minimum water
supply temperature of 17°C.

It is recommended that a circuit balancing
valve be tted to maintain water ow at a
constant rate. The minimum water ow rates
in litres per second (l/s) are as follows:
:  
Minimium 0.45 0.67

The air conditioner should be connected
to the appropriate power supply for each
model, as specied in the wiring diagram,
with neutral and adequate earth. The supply
to have an accessible switch to allow
isolation of the unit. Wire the heating and
cooling room thermostat to the electrical
terminals adhering to the wiring diagram
supplied with the unit. All wiring to the air
conditioner must comply with the wiring
regulations of the local electrical authority.

The Indoor fan can be switched ON through
the thermostat by selecting High, Medium
or Low fan speed, or via BMS. This can be
done without starting the compressor.
The factory default setting of the maximum
fan speed and the fan speed range (High –
Low) are specied on the wiring diagram.
If either High speed or Low speed need
adjusting, proceed as follows for:
Units supplied with SAT-2 Controller
Use DIP Switches 1 to 5 on the Analogue
Level Controller (ALC) board located in the
electrical box – refer wiring diagram. DIP
switches 1 to 3 determine the maximum fan
speed. DIP switches 3 & 4 determine the fan
speed range, below the maximum setting.
Units supplied with UC7 Controller
Use the UC7 Controller board to adjust the
indoor fan speed:
i. Set DIP switch 5 on the UC7 to ON, then
reset the controller by cycling mains
power to the unit off and on again.
ii. Ensure the compressor is off and the
thermostat or BMS does not request for
the compressor to start.
iii. Press and hold down the SW3 push
button on the UC7 circuit board until the
display shows the letter 'H', then release
the push button.
iv. The indoor fan will start and run at the
'High' speed setting (factory default
setting is 7.5V). The display will show the
value ('7.5') and the indoor fan will run at
the selected speed.
v. Each following press on the SW3
push button increases the indoor fan
control voltage in steps of 0.5V, up to a
maximum of 10.0V. Pressing the push
button again when value 10.0 is shown
returns the fan control voltage down to
the minimum value for 'High' fan speed
(3.0V).
vi. When the desired setting for high fan
speed is selected then wait for 30
seconds. The controller will save the
selected value in its memory and return
to normal operation.
vii. To adjust the indoor fan 'Low' speed
repeat the above procedure but wait until
the display shows the letter 'L' before
releasing the push button. The factory
default value for low speed is 5.5V.
HWP-CKSYD & HWP-RKSYD models:
Once set, your fan speed range can
then be set to: LOW, MED and HIGH
(DIP1 switch 1 'OFF') across the selected
range.

Refer to HWP 77/96 Data Sheet pamphlets
for detailed information on air handling
performance and water ow rates.

Unit protection is incorporated in either:
a.) UC7 Controller, or
b.) SAT-2 Controller,
depending on which HWP model is being
installed.
A pump verication relay ensures that water
is owing before the compressor will start.
A high pressure lockout protects the unit
from low water ow in cooling mode, or fan
failure in heating mode. Sensors protect
against low air coil temperature and loss of
refrigerant. Units include an anti rapid cycle
device for compressor protection.
HWPSR units also have a low refrigerant
temp. safety thermostat to protect against
icing up of the water within the unit's tube-in-
tube heat exchanger.
A non-specic fault LED/ output signal is
also included for remote fault indication to
building management systems (refer wiring).
For models supplied with UC7 Controller,
refer to the label on the unit for operation &
fault diagnosic information.
: Lockout protection can be reset by
switching unit's power supply off and on.
Lockout protection will also reset when the
thermostat switches, or is switched to the
dead zone.
 
MOUNTING
ROD TIGHTEN
LOCKNUTS
FOR
STRENGTH
PREFERRED
MOUNTING
SYSTEM
(SUPPLIED)

OPEN
DRAIN
MINIMUM
SLOPE
20 mm PER m
(1 IN 50)
50 mm
MINIMUM
100 mm
APPROX.
'U' TRAP
100 mm
APPROX.
VENT PIPE
FOR LONG
CONDENSATE
DRAIN RUNS
UNIT



The following components are supplied in a
box taped inside the supply air spigot:
1. SAT-2 Wall Control plaque, including wall
mounting plate.
2. 10 m interface lead (electrical box-to-
plaque).
3. User's Operating Instructions booklet.
4. Lithium CR2032 battery (3V).
Optional
1. Remote return air sensor (in box).
2. Remote return air temperature sensor
lead; 1.5, 6, 12 or 25 m.
3. 20 m extended interface lead
(electrical box-to-plaque).
4. SAT-2 Zone Control PCB.
5. Zone Control 24V transformer.
6. Additional SAT-2 Wall Control plaque.
7. Infra red remote control.

The SAT-2 Controller PCB is supplied pre-
installed in the HWP unit's electrical box.
1. Isolate the HWP unit from power supply,
then remove electrical box cover.
2. Remove the SAT-2 box supplied taped
inside the supply air spigot.
3. Remove the Wall Control's interface lead
from this box and connect to the terminal
block (A1/B1/Vcc/GND) on the SAT-2
Controller board. Trace the remaining
length of the lead to the Wall Control's
intended location. : Make sure the
coloured wires are connected as per the
wiring diagram.
4. Remove the Wall Control's backing plate
by using a small screw driver to remove
the single screw at the bottom edge of
the plaque.
5. Install the Lithium battery, supplied loose,
positive (+) side up in the Wall Control's
battery holder.
6. Check the wall where the Wall Control
plaque is to be located is at before
fastening the wall mounting plate.
Alternatively, the mounting plate can
be screwed to a standard wall socket
mounted horizontally.
: Use low prole (mush) headed
screws to prevent contact with the PCB
board. Fixing the plate to a distorted
surface may damage the control.
7. Drill hole in wall to allow cable entry.
8. Connect the interface lead to the the
Wall Control board. : Make sure
the coloured wires are consistently
connected at each end as per the wiring
diagram.
9. Ensure the interface lead is run
separately and away from main
power supply wires, including the
interconnecting cable. When installing
cabling, trim any excess length to suit
your location.
10. Fill around the interface lead with foam
or cover hole with PVC tape to prevent
draft from wall cavity affecting control
operation. Do not use aluminium duct tape.
11. Secure the Wall Control body to the
mounting plate by replacing the locking
screw removed earlier.
12.Replace the HWP electrical box cover.

Units Supplied With SAT-2 Thermostat
Any faults detected are displayed on the
SAT-2 Wall plaque (refer Table 1). A non-
specic fault output signal is also included
on SAT-2 Controllers for remote fault
indication to building management systems.
Units Supplied With Electric Heat
HWPSCEKS models supplied with electric
heat include both auto (90°C) and manual
(120°C) high temp. safety thermostats. If the
manual safety t/stat requires resetting, then
the auto safety t/stat has failed and needs to
be replaced.

(Reverse Cycle Models)
The thermostat should be set within the
recommended operating range of between
19°C and 30°C. The thermostat should
not be used as an on-off switch. Refer to
for a list of other approved
thermostats.
If your unit is supplied with 's
, refer to page 3 for
installation instructions.

1. Check that the thermostat is
correctly wired and set at the desired
temperature.
2. Check that the air lter (if tted) is clean.
3. Check that the fan runs freely without
vibration.
4. Check condensate drain and safety
drain tray for free drainage.
Demonstrate the SAT-2 Wall Control (if
supplied) to the owner/user, after having
rst thoroughly familiarised yourself with the
User's Operating Instructions. This page is
to remain with the owner/user.


1. Remove lint and dust accumulation from
heat exchange air coil. (Note: failure to
do this may affect efciency).
2. Check air lters and vacuum or wash
clean as necessary.
3. Check condensate drain for free
drainage.
4. Check compressor compartment for oil
stains indicating refrigerant leaks.
5. Check quality of water supply.

Check tightness of electrical connections.

1. Remove lint and dust accumulation from
heat exchange air coil. (Note: failure to
do this may affect efciency).
2. Replace air lter if damaged to maintain
adequate air ow and efciency.

The manufacturer reserves the right to
make changes in specications at any time
without notice or obligation. Certied data is
available on request.
This pamphlet replaces the previous
issue no. 3905 dated 11/13. Indoor fan
speed adjustment; wiring revisions.


The air temperature sensor is by default
located in the Wall plaque. Optional remote
air temperature sensors are available
so that the measurement of the room
temperature can be taken away from the
wall plaque, eg. elsewhere in the room or in
the return air duct.
Remote sensor's can be plugged directly
into the Controller board (PCB). This
board accepts up to four sensors which
are designated as 'zones' one to four. The
rst return air sensor will automatically
replace the Wall Control sensor and should
be located in the same room as the Wall
Control. The Controller will always use the
average of the zones selected. Refer to the
separate installation instructions supplied
with the PCB for further details.
Ensure all remote sensor wires are run
separately and away from main power
supply wires, including the interconnecting
cable.

Any faults detected are displayed on the
SAT-2 Wall plaque (refer Table 1 overleaf).
A non-specic fault output signal is also
included on SAT-2 Controllers for remote
fault indication to building management
systems.



1. Avoid installing units, with non-ducted return air, directly above
spaces where noise is critical.
2. Use exible connections between unit and rigid ducting.
3. Use generously sized acoustically lined ducts.
4. If generous duct size is not possible, use turning vanes on bends
to reduce air turbulence (regenerated noise).
5. Use 90° bends in ducting to signicantly assist in noise reduction.


If an fault is detected, an 'ERR' symbol will light up on the Wall plaque display.
The following error codes may be displayed:
   
1 Room sensor #1 failure Main board AD3
2 Room sensor #2 failure Main board AD4
3 Room sensor #3 failure Main board AD5
4 Room sensor #4 failure Main board AD6
5 #1 indoor coil sensor failure Main board AD1
6 #1 LST sensor failure Main board AD2
7 #1 insufcient refrigerant
8 #1 compressor overload
9 #1 low pressure failure
10 #1 high pressure failure
11 Room sensor #5 failure At wallpad B
12 Room sensor #6 failure At wallpad A
13 All room sensor failure
14 Float switch failure
15 #1 Low safety thermostat failure
16 Communication failure
17 Hydronic pump switch failure
18 #2 insufcient refrigerant
19 #2 compressor overload
20 #2 Low safety thermostat failure
21 Discharge sensor 1 failure
22 Discharge sensor 2 failure
23 Discharge temp 1 failure
24 Discharge temp 2 failure













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11/14 Pamphlet No. 3905