TemperZone OPA 1370RKTMG01-PZ Installation & Maintenance

OPA 1370RKTMG01-PZ (Digital c/w Plug fan and Economiser)

Packaged Reverse Cycle R410A
Air Cooled Air Conditioner

GENERAL

This OPA 1370RKTMG Outdoor Unit must
be installed in accordance with all national
and local safety codes.

OPTION

1. TZT-100 Room Temperature Controller

(eld tted).

2. Viking Controller for Economiser with

enthalpy control (factory tted).

REFRIGERATION SYSTEM
General

The OPA 1370 has four independent
refrigeration circuits and four compressors

to provide the exibility and economy of

four stage operation, i.e. utilising one to
four circuits as conditions vary, plus the
advantage of staggered starting.

Each refrigeration system has been
charged with HFC-410A (R410A)
refrigerant; refer wiring diagram

specication table for amount. Tapping

points are provided to measure discharge
and suction operating pressures.

Compressors

The compressors are directional scroll
type. One of the four compressors is digital
scroll type. This has a variable capacity
ability that enables closer control of room
temperature.

The compressor lubricant is polyol ester
oil (POE). Note, this oil absorbs moisture

quickly if exposed to open air. On

commissioning, the compressors must be
checked for correct rotation (refer Start
Up Procedure). A time delay prevents
simultaneous starting of the compressors.

ECONOMISER

The economiser fresh air intake cowl with
water separator is supplied separately and

is best tted after the OPA is mounted on

it's platform. Fitting instructions are supplied
with the cowl.

Controls may be supplied by others. If the
outdoor air temperature or heat content
preferably, is below that of the return air
the fresh air damper opens and the return

air damper closes to provide the rst stage

of cooling. A spill air facility in the building
may be necessary for when the return air
damper is closed. The fresh air damper
should return to minimum setting and the
return air damper open before compressors
are allowed to operate to provide further
cooling.

INSTALLATION

Positioning

Refer to dimension diagrams for minimum
clearances. If multiple units are to be
placed side-by-side then allow at least 2 m
between coil faces.

Mounting

The unit should be fastened to a rm at

horizontal base using the holes supplied in
the mounting channels.

When the unit is being installed on a roof
it is recommended that the unit is installed
on a substantial structure with anti-vibration
mounts or pads.

Flexible duct connections are recommended

between the supply and return ducts and
the unit.

Condensate Drain

The condensate drain should be 'U' trapped
outside the unit. 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 pipe.

OPEN
DRAIN

VENT PIPE
FOR LONG
CONDENSATE
DRAIN RUNS

100 mm

APPROX.

100 mm
MINIMUM

200 mm

APPROX.

'U' TRAP

Electrical Requirements

Electrical work must be done by a qualied

electrician. The outdoor unit must be wired
directly from a distribution board by means
of a circuit breaker or H.R.C. fuse, and a
mains isolator provided - preferably close to
the unit.
Note: DO NOT USE REWIRABLE FUSES.

The OPA 1370 is provided with a 24V AC
control circuit for a thermostat, on/off switch
and/or time clock.

Standard units are suitable for use with
thermostats with either manual Heat/Cool
selection or automatic changeover subject to
the contact ratings of the thermostats.

The system is set up for the compressors to
be controlled variably by:

1. TZT-100 Controller (via RS485 modbus),

2. 0-10V dc command via BMS modbus, or

3. 0-10V dc command via a client supplied

external controller.

If option 1 is chosen, then disconnect or
remove the Signal Input for Controller 0-10V.

If a TZT-100 Controller is used then variable
capacity control is automatically included
and no additional wiring is required.

A 24 hour power supply to the control circuit
is required, otherwise the warranty is void.

SETTING SUPPLY AIR FLOW

Consult OPA 1370 Technical Data pamphlet

at www.temperzone.biz for details of airow/

duct static pressure, if required.

MINIMUM
SLOPE
20 mm PER m
(1 IN 50)

Installation &
Maintenance

If the indoor air returning to the unit is

regularly expected to be above 50%RH,

then the coil face velocity should be limited
to be 2.5 m/s or less (refer Air Handling
graph in Technical Data pamphlet).

High humidity levels can occur in tropical or
subtropical conditions, and/or when heavily
moisture laden fresh air is introduced.
Select a fan speed that avoids water carry­over problems.

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, a variable fan speed can be

controlled as follows by applying an external

variable 0–10V DC control voltage to
'0–10V' terminal. Connect 0V reference to
'FAN GND'.

CHECK TESTS

1. Check that all the shipping bolts on the
back of the compressor frame have been
removed and that the compressor is
secure on its mounts.

2. Check by hand that all fan motors can
turn freely.

3. Check that the air lters have been
correctly installed, if tted.

4. Check air diffuser dampers are open if
appropriate.

5. Check that the thermostat, or external

24V controller, is correctly wired to
the unit and is set at the desired
temperature.

6. Check the tightness of all electrical
connections.

7. Leave the thermostat, or external 24V

controller, in the off position and close
the mains isolating switch. (A four hour
delay period is required to allow the
crankcase heater to drive any liquid
refrigerant out of the compressor oil.)

8. Check the supply voltage between each
phase and neutral.

START UP PROCEDURE

After the four hour delay for the crankcase

heater has expired, use the supplied

Commissioning Sheet (Form NS 228) to
record results when completing the following

‘Start-up’ procedure. A UC6 Service
Interface tool is supplied to read, pressures,

superheat and its set-point, compressor
amps etc.

1. Select a sensible Fan speed (or Auto
Fan mode), operating cycle (cool or
heat), and room temperature set point,
depending on the time of year, such that
the compressor will start and run at a
high capacity.

2. Turn ON the thermostat / external

controller. Wait for the compressor to

start. Measure the current for each

PROJECTION

phase feeding into the compressor’s.

Compare against the compressor amps

specied on the unit’s wiring diagram.

3. Compressors tted are directional. Check

for correct rotation. If rotation is incorrect
the compressor will not pump, be noisy,
and will draw minimal current. To correct
motor rotation, change the phasing at
the main power terminal. If changing the
phasing, check the indoor air fan then
runs in the correct direction also.

4. Measure the current draw of each fan
motor. Check all readings against the

specied values in the wiring diagram.

5. Use the UC6 Service Interface tool to
check operating pressures and status.
If the UC6 Service Interface is not

available, t gauges and measure the

suction and discharge pressures of both
refrigeration circuits.

6. Check that the outdoor air fan motors are
running smoothly and drawing less than

the full load amps specied.

7. Check the indoor unit's fan belt tension
after 20 mins of operation and adjust if
necessary (refer Commissioning Sheet).

8. Test the operation of the reversing valve
by running the unit in both the heating
and cooling mode.

9. Check the supply air ow at each outlet.

10. Touch up any outdoor unit paintwork
damage to prevent corrosion.

UNIT CONTROLLER (UC6)

The Unit Controller provides system
protection functions such as coil frost
protection, de-icing, high head pressure
and low suction pressure cut-out. It
also protects against rapid cycling of the
compressor and loss of refrigerant. The UC
regulates the superheat of the refrigeration
system by controlling the position of an

Electronic Expansion Valve (EEV). Various

methods of head pressure control (or
limiting) are employed in temperzone units
including in this particular unit, variation
of compressor speed. The particular
method used varies from model to model,
but is handled by the Unit Controller.
In combination, these features deliver
optimised performance across a wide
operating temperature range.

Refer to UC6 Controller label on the unit for
operation & fault diagnostics information.
Many operating status conditions can be
determined, without gauges, simply by using
the UC6 Service Interface graphical display
supplied with the unit.

MAINTENANCE
Monthly

1. Check air lters, if tted, and vacuum or

wash clean as necessary.

2. Check condensate drain for free
drainage.

3. Check compressor compartment for oil
stains indicating refrigerant leaks.

Six Monthly

1. Check the tightness of electrical
connections.

2. Check the tightness of all fans and motor
mountings.

3. Check suction and discharge operating
pressures. (Using the UC6 Service

Interface avoids tting and removing

gauges with consequential refrigerant loss.)

5. Check condensate drain for free drainage.

Yearly

1. Check all refrigerant piping for chang

and vibration.

2. Check the operation of electric heaters,

if tted.

3. Check air supply at all diffusers.

4. Check for excessive noise and vibration

and correct as necessary.

5. Check for insulation and duct damage
and repair as necessary.

6. Remove lint and dust accumulation from

outdoor coil ns.

7. Touch up any paintwork damage to
prevent corrosion.

NOTE

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.

DIMENSIONS (mm)

OPA 1370RKTMG01-PZ – Horizontal Supply & Return Air

1000 MIN. CLEARANCE

FILTER

ACCESS PANEL

FAN

ACCESS

DOOR

W

RETURN

AIR

DRAIN
11/2" BSP
MALE

MOUNTING

CENTRES

SUPPLY

AIR

2260

UV

ELECTRICAL

ACCESS

DOOR

2430 OA

1000 MIN. CLEARANCE

ELECTRICAL

ACCESS

DOOR

ZYX

OUTDOOR

AIR FLOW

OUTDOOR

AIR FLOW

1000 MIN. CLEARANCE

2000 MIN. CLEARANCE

OPA 1370RKTMG-PZ

Not to Scale

POINT LOADS (kg)

U V W X Y Z

430 347 262 406 419 433

Net Weight 2297 kg

Note : A 2 m clearance

is required above the

exhaust air fans

690

ECONOMISER

WEATHER

HOOD

2320

OVERALL

184

2150 CENTRES

4668 OA

2150 CENTRES

184

1710

380

100

250

617

617

230

225

OPA 1370RKTMG-P – Wiring Diagram Part 1, of 3

Spec data updated.

©temperzone Ltd 2017

SHEET OF

31

CP2W1

F

5-D

H

5-D

CBL15

TFC1

IFM4

230V

CBL20

C8

1-B

B7

1-A

A7

1-A

CBL6

IFM3

L

TB8

MAINS

TFC

settings- Refer table

For SW2 (DIP switch)

FAN

output

R

N

2-D

E

N

TW1

TW2

3-D

TB9

CBL7

IFM2

CBL19

C7

1-B

B6

1-A

A6

1-A

IFCB1 IFCB2

C6

1-B

B5

1-A

A5

1-A

IFM1

CBL5

OFM1

CAP

BB2

RV1

CMC1

CMC2

CBL11

CBL4

C5

1-B

B4

1-A

A4

1-A

C4

1-B

B3

1-A

A3

1-A

BB1

CMM2 CMM3 CMM4

CMOL2CMOL1 CMOL3 CMOL4

C3

1-B

B2

1-A

A2

1-A

CMC1 CMC2 CMC3 CMC4

CMCB1 CMCB2 CMCB3 CMCB4

C2

1-B

CBL1 CBL2 CBL3

Digital

CMM1

OF3&4CB

B1

1-A

OF1&2CB

A1

1-A

CMC1

CMC2

CM1

EEV1

MV

Output

Fault

Fan

A
B

A
B

Service

Interface

CCBSPSCB

C1

1-B

7-A

A3 4-A

A6

5-A

A5

8-A

5-A

A7

A1 2-A A2 3-A

A4

4-AB67-A

B3

B2 3-A

2-A

B1

L1

MIS TB

MIS

SPS1

4-A

6-A

C6

C3

6-A

B5

5-A

B4

L2

5-A

8-A

C2 3-A

C5

C8

2-A

4-A

8-A

B7

7-A

C1

C4

C7

L3

2

1

ETH2

ETH1

N

BB1

ETH3

ETH4

BB2

ACTIVE

TB1

ACTIVE

N1

ETH

TR

24V

230V

8-F

8-C

V

W

2

FS1FS

N2

TB2

V0-C

N

CBL11

EEV1

EEV2

UC6

24VCB

TFC2

TB10

CBL8

(Refer Table for Part No.)

RS485

L

5-D

CCH1

9-D

BMS

B

2.0-A

2.3-A

A

24V

TB3

CP2W2

G

N

RV2

G

EEV2

IFR

24V

ACTIVE

TFC

For SW2 (DIP switch)

2-D

E

CAP

CBL12 CBL12

CBL15

HR1

COMM1

settings- Refer table

O

24V

TW1

R

8-C

8-C

N

CR1 CMOL1

CR1

COMM2

TB4

I

230V

MAINS

FAN

output

OFM2

CCH2

F

H

I

CR2 CMOL2

24V

COMP1

4-D

TW2

CR2

S

9-C

9-C

9-D

UC6 1 (SYSTEMS 1 & 2)

S

8-D

8-D

O

PLCC12ER

24V

COMP2

3-D

TB11

C12ER

Sensors and Transducer

CR3

24V

COMP3

2.0-A

X

Y

*Refer Page 2

CR4

COMP4

TB5

2.0-A

24V

TFC3

TB12

CBL9

HR1

5-F

L

24V

HEAT1

K

N

HR2

HEAT2

CP2W3

24V

TFC

2-F

CAP

1KΩ

IFR

IFM

E

For SW2 (DIP switch)

P

CMC3

24V

C

Rev:

291-000-581

Drawing No:

Technical information *Refer Page 3

E

BB1

L

5-F

CBL16

230V

MAINS

settings- Refer table

FAN

output

T

3-F

TW1

TW2

TB13

CP2W4

J

5-F

M

4-F

TFC4

230V

MAINS

TFC

W0-C

TB14

settings- Refer table

For SW2 (DIP switch)

FAN

output

U

Q

2-F

L

E

N

TW1

TW2

3-F

TB15

CBL10

OFM3

OFM4

CAP

C34ER

Wiring Schematic

N

BB2

CBL13

RV3

CMC4

CBL13

9-F

CMC4 CMC3

EEV3

EEV4

Output

Fault

UC6

Fan

EEV1

(Refer Table for Part No.)

A
B

RS485

A

BMS

B

Service

Interface

D

2.0-A

2.6-A

C

9K1Ω

Y

G

GO

DMF

DMF

HOT

DMR

COM

TB16

E

DMR

DMF

TB6

J

IFR

Cable 18

FAULT

EEV2

Return and

E

COMM

TB7

CCH3

CBL16

HR2

Economiser

Damper

TB17

OUT 1

FAULT

CR3 CMOL3

DMR

FAULT

RV4

CCH4

CBL14 CBL14

K

9-E

L

9-E

M

9-F

UC6 2 (SYSTEMS 3 & 4)

*Refer Page 2

Sensors and Transducer

T

U

8-F

8-E

8-F

8-E

P

Q

PLCC34ER

CMOL4

CR4

Y

G

GO

DMR

E

DMF

HOT

COM

Cable 17

0V

OUT 2

0-10V

OPA 1370RKTMG-PZ-UC6

Title:

27-12-2017

Date:

A.K.B

Drawn:

Apprvd:

Client Wiring

APPROVED

DATE

01-02-19 A.W.G.

SCALE - ASK

DO NOT

ECN

N4188

DESCRIPTION

C

REV

OPA 1370RKTMG-P – Wiring Diagram Part 2, of 3

©temperzone Ltd 2017

SHEET OF

32

Spec data updated.

CBL23

11 14

GND

E1

IFM 4

10V

D1

24V

C

Rev:

291-000-581

Drawing No:

Wiring Schematic

OPA 1370RKTMG-PZ-UC6

CBL22

11 14

GND

E1

IFM 3

10V

D1

24V

C

1.2-F

Title:

27-12-2017

Date:

CBL21

11 14

GND

E1

IFM 2

10V

D1

24V

A.K.B

Drawn:

Apprvd:

CBL20

11 14

GND

E1

IFM 1

10V

D1

24V

A

1.2-D

Client Wiring

APPROVED

DATE

01-02-19 A.W.G.

SCALE - ASK

DO NOT

ECN

N4188

D

1.5-E

1.4-E

1.3-D

1.3-F

IF1

FAULT

TB18

IF2

FAULT

NC7 1

FAULT

NC7 2

FAULT

TB19

FAN

FAN

GND1

GND2

FAN 1/2E1FAN 3/4

E1

X

Y

B

DESCRIPTION

C

REV

OPA 1370RKTMG-P – Wiring Diagram Part 3, of 3

©temperzone Ltd 2017

SHEET OF

33

Crankcase Heater Note

24 Hour power required (on L1)

for control curcuit and crankcase

heaters

Important Notes:

TFC Dip Switch Settings

SW1 SW2 SW3 SW4

Off Off Off Off

Important Note

Compressors fitted are directional. If

rotation incorrect, compressor/s will

not pump, be noisy, and draw

minimal current. To correct rotation,

reverse two phases.

Sensors (S) / Transducers (T)

ST1 Suction Temp S

ST2 Suction Temp S

Discharge Temp

Discharge Temp

SP1 Suction Pressure

SP2 Suction Pressure

Spec data updated.

132

134

1370RKTM

kW

OPA

37.7

kW

30.1

kW

3.55

3.54

kW/kW

kW/kW

A/Ph

15

A/Ph

15

A/Ph

15

A/Ph

65/73/73

22A x 42A32A x 4

A

A

AAA

N/A

MFD

20 x 4

4 x 4

1.9 x 415P.O.E4A10A x 2

96/105/105

4.5 x4

16A

16A

A

A

A

A/Ph

A/Ph

10A

200A

10.7

2297

A

A

A

Kg

Kg

C

Rev:

291-000-581

Drawing No:

Cooling -kWElectrical Input

Heating - Reverse Cycle

Capacities - Nett to AS/NZS 3823

C

Cooling -

E.E.R. (Cooling)

Heating - Reverse Cycle

A.E.E.R (Cooling)

Supply required 3Ph 380-415V ~ 50Hz

Electrical

Compressor 1 (3Ph) run amps rating conditions

Compressor 2 (3Ph) run amps rating conditions

Compressors type : Scroll

CM

Client Wiring

Compressor Overload settings

Compressor Circuit Breakers

Compressor 4 (3Ph) run amps rating conditions

Compressor 3 (3Ph) run amps rating conditions

CMOL

CMCB

Compressor Oil Type

Indoor Fan Motor (3Ph) kW

IFM

BB1

Indoor Fan Motor Circuit Breaker

Indoor Fan Motor (3Ph) Full Load amps

IFCB

Indoor Fan Motor Overload settings

Outdoor Fan Motor (1Ph) Full Load amps

Outdoor Fan Motor Capacitor

IFOL

L1

Outdoor Fan Motor 3 & 4 Circuit Breaker

Outdoor Fan Motor 1 & 2 Circuit Breaker

Running Amps (total)

OFCB

OFCB

Max Running Amps

L2

24 Volt Circuit Breaker

Control Circuit Breaker

Single Phase Socket Circuit Breaker

CCB

24VCB

SPSCB

L3

24 VOLT CIRCUIT BREAKER

Weight-Nett

Refrigerant Charge - per system

Main Isolator Switch

MIS

24VCB

N

BB2

Client External Protection and Isolator switch

BB BUS BAR

C12ER COMPRESSOR 1&2 ENABLE RELAY

C34ER COMPRESSOR 3&4 ENABLE RELAY

CAP CAPACITOR

CBL COMPRESSOR CABLE

CCB CONTROL CIRCUIT BREAKER

24V

24V

TB5

Fit links as shown

CCH CRANKCASE HEATER

CMC COMPRESSOR CONTACTOR

CMCB COMPRESSOR CIRCUIT BREAKER

24V

COMM

COMP2

COMP1

connected to UC6

ONLY if using TZT-100

CMM COMPRESSOR MOTOR

CMOL COMPRESSOR OVERLOAD

24V

24V

COMP3

"T/ST terminals OR a

BMS which

CR COMPRESSOR RELAY

DMF DAMPER MOTOR FRESH AIR

24V

COMP4

the UC6 via mod bus

communicates with

DMR DAMPER MOTOR RETURN AIR

24V

HEAT1

EEV ELECTRONIC EXPANSION VALVE

ETH EARTH STUD

24V

HEAT2

HR HEAT RELAY

IBB INSULATED BUS BAR

IFC INDOOR FAN CONTACTOR

IFM

24V

IFCB INDOOR FAN CIRCUIT BREAKER

IFM INDOOR FAN MOTOR

IFOL INDOOR FAN OVERLOAD

IFR INDOOR FAN RELAY

MIS MAIN ISOLATOR SWITCH

MV MODULATING VALVE

OFCB OUTDOOR FAN CIRCUIT BREAKER

OFM OUTDOOR FAN MOTOR

PRC PHASE ROTATION CONTROLLER

PLR PHASE LOSS RELAY

RV REVERSING VALVE

SPSCB SINGLE PHASE SOCKET CIRCUIT BREAKER

SPS SINGLE PHASE SOCKET

TERMINAL JOINER

UNIT CONTROLLER 6 (201-000-485)

TFC TRIAC FAN CONTROLLER

TJ

TR TRANSFORMER

UC6

Title:

Wiring Schematic

OPA 1370RKTMG-PZ UC6

27-12-2017

Date:

A.K.B

Drawn:

Apprvd:

02/19 Pamphlet No. 3986

1)

2)

Client Wiring

APPROVED

DATE

01-02-19 A.W.G.

SCALE - ASK

DO NOT

ECN

BLUE

T

T

High Pressure

High Pressure

HP1

HP2

S

De-ice Temp

TS1

BLUE

S

S YELLOW

De-ice Temp

Ambient Temp

TS2

OAT

BLUE

BLUE

Colour

S GREY

S GREY

T

DT1

T

DT2

Type

Name

3)

N4188

DESCRIPTION

C

REV

© temperzone limited 2019