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Calorex PORTA TEMP 240 Service Manual

PORTA TEMP 320DX

Made by: Calorex
Type: Service Manual
Category: Air Conditioner
Pages: 12
Size: 0.23 MB

 

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Page1

AIR CONDITIONING

PORTA TEMP 240/320DX

CAUTION

PLEASE READ THIS LEAFLET CAREFULLY

1. DO NOT APPLY MAINS WATER PRESSURE TO THIS UNIT. WHERE
APPROPRIATE, ACCESS TO THE FILLING POINT FOR THE WATER
CIRCULATING SYSTEM IS REACHED BY THE REMOVAL OF THE FILLER
ACCESS PLATE IN THE ROOM UNIT BACK PANEL.
2. WHEN REMOVING THE UNIT FROM AN INSTALLATION DISCONNECT WATER
QUICK COUPLINGS IN THE ROOM UNIT FIRST.

INTERNAL ACCESS SHOULD BE RESTRICTED TO CALOREX TRAINED STAFF
ONLY.

SD259755 ISS 4

 


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Page 2

BLANK PAGE

 


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Page3

DO NOT LET HEAT EXCHANGER HANG
FROM ITS FLEXIBLE LINE

SUPPORT HEAT EXCHANGER
WEIGHT USING HOOKS
AND CHAINS PROVIDED
OR STAND ON FIRM 

GROUND.

DROPS OF CONDENSATE
MAY APPEAR HERE

Fig 1

PAC240 SHOWN

EXTERNAL HEAT EXCHANGER (HEX).

The heat exchanger must stand external to the area
being cooled and, preferably, in the outside atmosphere.
It can stand freely on a flat surface or, in the case of the
PAC.240 may be hung in the upright position from a
sindow sill, balcony etc, see Fig 1. USE THE CHAINS
PROVIDED TO SUPPORT THE HEAT EXCHANGER.
IT WOULD BE HIGHLY DANGEROUS TO SUPPORT
THE HEAT EXCHANGER BY MEANS OF THE
FLEXIBLE LINES ALONE.

CONDENSATE.

In operation, the room unit is constantly condensing water
vapour out of the atmosphere (reducing relative
humidity).  This water has to be drained away.  An
automatic condensate pump is fitted inside all  room
units. The flexible hose outlet from the condensate pump
runs to the outside, inside the flexible sheath , the
condensate is deposited in the base of the heat
exchanger, considerable re-evaporation of this water
takes place on the warm air stream passing through and
around the heat exchanger, but please remember that
there will also be a degree of dripping through the base
of the heat exchanger.

HAVE GREAT REGARD FOR THIS CHARACTERISTIC
WHEN POSITIONING THE EXTERNAL HEAT
EXCHANGER.

The flexible water pipes should be routed  so as to avoid
any possibility of kinking or unnecessary restrictions to
the flow of water inside.  Also, remember that plastic
and rubber becomes much more flexible when warm
and, as a result, much more susceptible to distortion.

5) MACHINE LINK-UP.

Ensure the mains supply lead to the room unit is
disconnected. A 5m (extendable to 30m) line set to
connect water between the room unit and the external
heat exchanger will have been supplied. The water pipe
connections are by means of “quick connect couplers”.
These are simple “push-on” connectors which, when
disconnected (after pulling back sprung loaded locking
ring), re-seal the water system on either side.  The
complete system will have been filled with the necessary
amount of water/antifreeze prior to its arrival on site. A
condensate drain pipe coupler 6mm clear polythene
(push fit), should also be connected. Having made the
couplings, the system is operational immediately.

WARNING !

This unit MUST be transported and operated in the upright
position at all times.

1) COMMISSIONING INSTRUCTIONS

As standard, these units are supplied with a NEMA  power
plug attached to the power supply cord. They require a 208/
230volt 1 phase 60Hz supply with the following appropriately
protected current rating:-
PAC.240 20 AMPS
PAC.320 30 AMPS
The size of any extension cable that may be used is as
follows and must be rated above the fuse size also allowing
for voltage drop and be suitable for the environment:
PAC.240

14AWG up to 30 feet
12AWG over 30 feet

PAC.320

10AWG up to 30 feet
8AWG over 30 feet

 If the cable is on a "cable drum" then ensure that it is
completely unwound; serious complications will occur
otherwise.

2) SYSTEM DESCRIPTION.

The system comprises a room unit cooling section, an
external heat exchanger and the two are inter-connected
by means of flow and return water pipes and an electrical
supply to the heat exchanger fan.The room unit is fitted
with an automatic condensate disposal pump which
discharges the condensate via a small plastic pipe 

into

the base of the external heat exchanger 

and all

interconnecting pipes and electrics are enclosed in a flexible
plastic sheath.  In addition, both ends of each pipe are fitted
with "quick connect" couplings that open on coupling but
reseal to become water tight on disconnect.

3) AIRFLOW

The angled outlets at the top of the room unit are fitted with
air grilles that allow the angle of air outlet to be adjusted
vertically and horizontally and, in conjunction with the fan
speed control switch, the air velocity and direction can be
carefully set up to obtain maximum coverage of the area
being cooled without causing drafts. Care should be taken
to avoid outlet air being obstructed as this will cause the air
to "eddy" around the unit resulting in recirculation and short/
inaccurate cycling of the machine. Ideally, cold air should
be directed to create a "blanket" all across the ceiling area
allowing natural convection to drop the air over the whole
area at very low velocity.

4) SITING

Ideally, the room unit should be positioned equidistant along
the shortest wall in the room

 

blowing down the length of

the room. If there is more than one unit in the same area,
then they would normally be positioned side by side, and
equidistant along the long wall, all pointing in the same
direction.  Sometimes it may be necessary to position units
around the perimeter of an area but, in this case, great
care should be taken to avoid one unit blowing cold air
straight into another which will adversely affect the machine
operation. Good and correct air flow is, perhaps, the single
most important aspect of satisfactorily applying portable
air conditioners. If in doubt seek the advice of your supplier.

 


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Page 4

6) ROOM UNIT WATER LEVELS

.

The water system in the room unit will be to the correct
level when delivered. However if for some reason the level
has fallen, antifreeze (33%) and water will have to be added.
The header tank filler and level indication is located to the
rear of the room unit and can be accessed by removing the
two screws holding the security plate over the filler tank
cap, see Fig 2. Ensure the machine is running in cooling
mode before removing the header tank cap, and as with all
pressure caps, remove slowly. It is recommended that a
mixture, by volume, of one part antifreeze to two parts water
is utilised, this will prevent freezing down to an external
temperature of -30°C/-5ºF.  The approximate total volume
the systems,  room unit with external heat exchanger and
lines is as follows:-

DO NOT APPLY MAINS WATER PRESSURE TO THE
SYSTEM.

Fig 2

10 

34 

THERMOSTAT 

KNOB

MAINS LIGHT 

(RED)

MODE 

SWITCH

FAN ONLY 
POSITION

COOLING 

POSITION

FAN SPEED 

SWITCH

FAN SPEED 

HIGH

FAN SPEED

LOW

COOLING LIGHT 

(GREEN)

ATTENTION LIGHT 

(AMBER)

HIGH 

PRESSURE

RE-SET

LOW

PRESSURE

RE-SET

DEFROST 

LIGHT (WHITE)

OFF 

POSITION

7) OPERATING INSTRUCTIONS.

The Control Panel on the room unit is illustrated below,
see Fig 3.
a) Revolve thermostat knob fully CLOCKWISE to the
number "8" position.
b) Plug in the room unit mains cable, and switch on
electricity, red mains light will illuminate.
c) Select "Fan Only" with the mode switch. The fan will
start.
d) Select "Fan Speed", with the fan speed switch, high or
low depending on air velocity required.
e) Select "Cooling" with the mode switch, and revolve the
thermostat knob fully ANTI-CLOCKWISE to the number
"1" position. If fitted the external heat exchanger fan and
the water pump in the room unit will start. After a delay of
10mins the  green "Cooling" light will illuminate and the
machine will proceed to cool the air.
f) Monitor the room temperature and when it has reduced
to the desired level, very slowly revolve the thermostat knob
back, clockwise, until the green "Cooling" light goes out.
The room unit will now control the room temperature cooling
automatically at this setting.

Fig 3

LINESET LENGTH Total Volume

Units

16FT

2.65

U.S Gallons

21FT

3.07

U.S Gallons

32FT

3.25

U.S Gallons

48FT

3.85

U.S Gallons

64FT

4.45

U.S Gallons

80FT

5.05

U.S Gallons

 


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Page5

8) ROUTINE MAINTENANCE

The air filter must be kept clean, never allow to become
choked with dust or dirt.  If allowed to do so, the performance
of the unit will become impaired, resulting in loss of air flow,
freezing up of the evaporator coil and possible component
damage.

 ACCESSING THE FILTER

Lift open the return air grille on the front face of the unit,
Fig 4. On refitting the filter ensure that it is correctly
positioned covering the whole rear face of the grille. The
filter (see Fig. 4) can be washed in warm, soapy water,
rinsed and shaken dry before replacement.  Frequency of
cleaning depends upon application and can only be
determined by the user.  However, you should never allow
more than two months to elapse between cleaning.  The
probable life of the filter will be about one year and spares
are available from the supplier of the unit itself.  Failure to
have filter fitted during operation will cause serious damage.

FIG 4.

The refrigeration circuit inside the room unit is fitted with a
HIGH and a LOW pressure sensing switch.  They are both
manually re-settable. A pencil or screwdriver with gentle
pressure on the knob behind is all that is required to re-set.
Necessary access is provided through the control console.
HOWEVER, DO NOT ATTEMPT TO RE-SET WITHOUT
FIRST DISCOVERING WHY THE TRIP
OCCURRED IN THE FIRST PLACE

LIFT AND REMOVE AIR FILTER

UNSCREW RETAINERS AND OPEN PANEL TO REMOVE FILTERS

9) MACHINE NOT WORKING?

ONLY A COMPETENT ELECTRICIAN SHOULD
ATTEMPT TO RECTIFY ELECTRICAL SUPPLY
PROBLEMS. DO NOT REMOVE ANY PANELS FROM
THE MACHINE.

Problem

 - No air flow from room unit.

Diagnosis

 -Red "MAINS" light off.

Cure

 - Turn on electricity and/or check mains supply

fuse.

Problem

 - No air flow from room unit.

Diagnosis

 - Red "MAINS" light on, White "DEFROST"

light on.

Cure

 - Machine in defrost mode, do not adjust anything,

machine will revert to normal run after 10 mins.

Problem

 - Insufficient air flow from room unit.

Diagnosis

 - Blocked air filter.

Cure

 - Clean filter

Problem

  -  No  cooling.

Diagnosis

 - Green "COOLING" light off.

Cure

 - Revolve thermostat knob fully anti-clockwise to

"1". Wait 10 minutes for time delay  on  start-up

Problem

  -  No  cooling.

Diagnosis

 - Amber "ATTENTION" light illuminated.

High pressure trip.

Cure

 - Press "+" button to re-set and check for :-

Lack of water flow ... kinked hoses? Shortage of
water ... top up.
External heat exchanger unit mounted in very high
temperature? Water frozen? Add glycol (33%).
External heat exchanger coil blocked with dirt ... clean.

Problem

 - No Cooling.

Diagnosis 

- Amber "ATTENTION" light illuminated.

Low pressure trip.

Cure

 - Press, "-" button to re-set and check for :-

No air flow, blocked filter?
Evaporator blocked with ice. Very low external
temperature?

Problem

 - No Cooling.

Diagnosis 

- Amber "ATTENTION" light illuminated.

Low pressure trip.

Cure

 - Condensate pump not reducing water level.

Kink in Condensate tube between room unit and heat
exchanger? Leak inside room unit. Sump filter inside
room unit blocked. Condensate tube frozen.

 


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Page 6

21

22

HE

WA
T

E

R

 

PU
M

P

 

HEX UNIT 

MV
 

AI

R

 

ST
AT
 

1 4 

HP
 L

P

 

FS

FS

A2
 

A1
 

FL
 

MC
 

C1
 

C3
 

S

 R 

AU

N/

C

 

min

DL
 

C2
 

MV
 

CL
 

S2
 

FT
 

RL
 

S1
 

SUMP HEATER 

F1 

F2 

COOL 

FAN ONLY 

LOW 

HIGH 

IN

 

CO
M

 

NC
 

IN

 

OU
T

 

NO
 

PUMP 

CONTROLLER 

TIME 

MP
 

DELAY 

L1 

L2 

K 1 

DO NOT SCALE PRINT

10   FLOAT SWITCH COAXIAL LEADS REMOVED

3   SUPPRESSORS ADDED TO RELAYS No2 & 3 

4   W/R & W WIRES TO FLOAT SWITCHES WERE BLACK 

5   CONTACTOR CHANGED 

SUPPRESSORS DELETED 

FLOAT SWICHES 

COAX LEAD ADDED 

6   2 off RELAYS DELETED & PUMP CONTROLLER ADDED 

7   PUMP CONTROLLER CLARIFIED ON CIRCUIT DIAGRAM 

8   FLOAT SWITCH FS1 TURNED AROUND 180 deg 

PLUG LEAD COLOURS ADDED. 

11   GREY FLOAT SWITCH LEADS WERE BLACK.

ISS

DRAWING CHANGE

12   TERMINAL BLOCK ADDED FOR WATER PUMP

97 

R

c

U.C.C.

CALOREX HEAT PUMPS LTD  

MATERIAL

FINISH

1024   CJW      08:02:01

GSM   3:6:97 

GSM   23:6:97 

952      GSM      23:1:98 

961      GSM   4:6:98 

961      GSM    3:12:98 

JAC 

1004 

1050    CJW     29:06:04

C/N

APPD

DATE

1084    CJW     15:04:05

LP SWITCH 

HP SWITCH 

TERM BLOCK 

EARTH STUD 

FAN CAP 

COMP RUN CAP 

HARD START CAP 

COMPRESSOR 

SUMP HEATER 

BASE EARTH 

B 1,5 

BR 1,5 

B 0

,5

 

B

 0,

B 0

,5

 

BR 0,5 

B 0,5 

GR/B 0,5 

O

/B

K

 0,

GR

/B

 0

,5

 

R

/B

L 0,

R 1,5 

BL

 1

,5

 

BL 1,5 

P 1,5 

P 1,5 

G

/Y

 1,

PLUG 

MAINS LEAD 

FAULT 

G/Y 1,5 

BLACK FLYING LEADS 

V

 0,

V

 0,

G/Y 1,0 

BL

U

E

 

BRO

W

BL

AC

YE

LL

O

W

 

G

R

EEN 

G

/Y

 0,

B

 0,

W

 0,

B

L 0,

W 0,5 

FAN MOTOR 

CA

P

 

TB 

SOCKET 

G/Y 1,5 

G/Y 1,5 

G/Y 1,0 

G/Y 1,0 

G/Y 1,0 

G/Y 1,0 

BR 0,5 

LAMP 

C3 

C1 

C2 

FL 

MC 

TERMINAL BOX 

G/Y (G USA) 

BR (BL USA) 

B (W USA) 

GSM   3:8:98 

08:02:01 

SOCKET TO HEX UNIT 

B 0,5 

BR 0,5 

B 0,5 

G/R GREEN/RED 

GRUN/ROT

VERT/ROUGE

BL 

BR 
GR 



G/Y GREEN/YELLOW 

WHITE 

RED 

PINK 

ORANGE 

GREY 

BROWN 

BLUE 

BLACK SCHWARZ 

BLAU 
BRAUN 
GRAU 
ORANGE 
ROSA 
ROT 
WEIB 

GRUN/GELB 

NOIR 
BLEU 
MARRON 
GRIS 
ORANGE 
ROSE 
ROUGE 
BLANC 

VERT/JAUNE 

V VIOLET 

VIOLETT  VIOLETTE 

G GREEN 

GRUN 

VERT 

HEX

 UNI

T

 

O/BK 0,5 

P 0,5 

GR/B 0,5 

R

/B

L 0,

 


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Page7

--- 

GSM 9:4:97 

NTS 


FT 
S1 

HP 
LP 


MC 
MV 
C1 
C2 


AT 

CONTACTOR 

DEFROST THERMOSTAT 

FAN MODE SWITCH 

LOW PRESSURE SWITCH 

DELAY TIMER 

RELAY 

COMPRESSOR MOTOR 

FAN MOTOR 

COMPRESSOR CAPACITOR 

FAN CAPACITOR 

SOLENOID VALVE 
AIR THERMOSTAT 

HIGH PRESSURE SWITCH 

SCHALTSCHUTZ 

VEREISUNGSSCHUTZTHERMOSTAT 

GEBLASESCHALTER 

HOCHDRUCKSCHALTER 

NIEDERDRUCKSCHALTER 

VERZOGERUNGSRELAIS 

RELAIS 

KOMPRESSORMOTOR 
VENTILATORMOTOR 

KONDENSATOR KOMPRESSOR 
KONDENSATOR VENTILATOR 

MAGNETVENTIL 

LUFTTHERMOSTAT 

CONTACTEUR 

THERMOSTAT DE DEGIVRAGE 

SELECTEUR DE MODE DU VENTILATEUR 

REINITIALISATION DEFAUT HAUTE PRESSION 
REINITIALISATION DEFAUT BASSE PRESSION 

TEMPORISATEUR 

RELAIS 

COMPRESSEUR 

MOTEUR DU VENTILATEUR 

CONDENSATEUR DU COMPRESSEUR 
CONDENSATEUR DU VENTILATEUR 

VANNE ELECTROMAGNETIQUE 

THERMOSTAT AIR 

MP 

CONDENSATE PUMP 

KONDENSATPUMPE 

POMPE A CONDENSAT 

FL 

FAULT LAMP 

LAMPE 'FEHLER' 

VOYANT PANNE 

DL 

DEFROST LAMP 

LAMPE 'ENTEISEN' 

VOYANT DEGIVRAGE 

CL 

CHILL LAMP 

LAMPE 'KUHLEN' 

VOYANT REFROIDISSEMENT 

RL 

MAINS (OR RUN) LAMP 

LAMPE 'STROM EIN' ODER 'LAUF' 

VOYANT SECTEUR (FONCTIONNEMENT) 

S2 

FAN SPEED SWITCH 

SCHALTER VENTILATORGESCHWINDIGKEIT 

COMMUTATEUR VITESSE VENTILATEUR 

F1 CONTROL 

FUSE 

KONTROLLSICHERUNG 

FUSIBLE 

PRINCIPAL 

F2 

CONDENSATE FUSE 

KONDENSATSICHERUNG 

FUSIBLE CONDENSAT 

C3 

HARD START CAPACITOR 

HARTSTARTKONDENSATOR 

CONDENSATEUR DEMARRAGE DIRECT 

FS1 

FLOAT SWITCH HIGH LEVEL 

SCHWIMMERSCHALTER HOHER STAND 

INTERRUPTEUR A FLOTTEUR NIVEAU HAUT 

FS2 

FLOAT SWITCH LOW LEVEL 

SCHWIMMERSCHALTER NIEDRIGER STAND 

INTERRUPTEUR A FLOTTEUR NIVEAU BAS 

C4 SUPPRESSOR 

SUPPRESSEUR 

ENTSTORUNGSELEMENT 

D355550 

WIRING DIAGRAM 

PAC240/HEX240 

TOLERANCE UNLESS SPECIFIED

HOLES TO BS 4500 E12

INSPECTION LEVEL

DIMS

SHT No.

CONT'

DRAWN

DRG No.

APPROVED

DATE

SCALE

TITLE 

AIR STAT 

3 POSN SWITCH 

A B 

21 

DELAY TIMER 

1 4 

2 3 

DEFROST STAT 

FAN MOTOR 

SOLENOID VALVE 

CONDENSATE 

FLOAT SWITCH 
HIGH LEVEL 

FLOAT SWITCH 

LOW LEVEL 

MAINS 

DEFROST 

CHILL 

BR 1

,5

 

B

 1.

B 0,5 

B 0,5 

CONTACTOR  B 

AUX 

A1 

22 

BR 

B 0,5 

R/

B

R

 0

,5

 

W

 0,

BL/W 0,5 

RELAY No 1 

W/

B

L 0

,5

 

P 0,5 

P 0

,5

 

P 0,5 

O

/B

L 0,

O 0,5 

O 0,5 

GR/B 0,5 

W

/R

 0,

W/

R

 0

,5

 

B 0

,5

 

G

/R

 0,

R 0,5 

W

 0,

GR 0,5 

GR

 0

,5

 

BR 0,5 

B

R

 0,

B

R

 1,

R

/B

 0,

R/B 0,5 

R/BL 0,5 

BLUE FLYING LEAD 

BLACK FLYING LEAD 

WHITE 

BROWN 

BR 0,5 

RED NOT USED 

R 1

,5

 

BL

 1

,5

 

FLYING LEAD 

FLYING LEAD 

SUMP 

GREY

GREY

GREY

GREY

R/B

R

 0

,5

 

BR 0

,5

 

W/

B

L 0

,5

 

B

 0,

BR 1

,5

 

B

 1,

W/R 0,5 

B 0,5 

W/R 0,5 

G/Y 1,0 

G/Y 1,0 

B 0,5 

B

 0,

W

/R

 0,

W

 0,

O 0,5 

BR

 0

,5

 

B 0,5 

BR 

G/Y 1,0 

PUMP 

W/R 0,5 

W 0,5 

G/

R

 0

,5

 

G

/R

 0,

B

 0,

B

R

 0,

BR 0

,5

 

FAN ONLY 

COOL 

W/BL LINK 

GR 0,5 

B 0,5 

N/C 

AT 

S1 

CL DL RL 

FT 

MV 

MP 

FS1 

FS2 

NOTE ORIENTATION OF SWITCHES 

B 0

,5

 

A2 

W

 0,

1,5 

0,5 

0,5 

B 0

,5

 

8 COM 

7 N/C 

6 N/O 

5 FAULT SIGNAL 

4 OUT 

3 SIGNAL IN 

2 L 

1 N 

B 0

,5

 

B 0

,5

 

PUMP CONTROLLER 

2 POSN SWITCH 

FAN SPEED 

S2 

CONTROL FUSE 7A 

CONDENSATE FUSE 1A 

BR 1,5 

BR 0,5 

BR 0,5 

BR 0,5 

BR 0,5 

G/R 0,5 

F1 

F2 

LAB

E

L D

355

551 

D355550 

IS

SU

E 1

2

FLYING LEADS 

IF IN DOUBT ASK

DRG No.

B 0

,5

 

R 1.0

BL 1.0

WATER PUMP 

TERM BLOCK
IN TERM BOX

B 0,5 

BR

 1

.0

O/BK 0,5 

GR/B 0,5 

R/B 0,5 

G/Y 1,0 

G/Y 1,0 

G/Y 1,0 

BR 1,5 

B 1,5 

 


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Page 8

RED FLYING LEAD
RED FLYING LEAD

R/

B

L 0,

BL 0,5 

R/B 0,5 

2   CHANGES TO SUIT EXISTING PAC22 LOOM

05:11:03

1A

1A

F4

F2

10A

INSIDE 

VIEW

R/BL 0,5 

97 

L1 

L2 

1   AS DRAWN 

19:01:02 

BL 

BR 
GR 



G/Y GREEN/YELLOW 

WHITE 

RED 

PINK 

ORANGE 

GREY 

BROWN 

BLUE 

BLACK SCHWARZ 

BLAU 
BRAUN 
GRAU 
ORANGE 
ROSA 
ROT 
WEIB 

GRUN/GELB 

NOIR 
BLEU 
MARRON 
GRIS 
ORANGE 
ROSE 
ROUGE 
BLANC 

VERT/JAUNE 

V VIOLET 

VIOLETT  VIOLETTE 

G GREEN 

GRUN 

VERT 

TERM BLOCK

30A 

EARTH/GROUND STUD 

FAN CAP 

COMP RUN CAP 

HARD START CAP 

SOCKET TO HEX UNIT 

COMPRESSOR 

SUMP HEATER 

BASE EARTH 

B 2,5 

BR 2,5 

B 0,

5

 

B 0,

5

 

B

 0,

B 0,5 

BR 0,5 

B 0,5 

BR 0,5 

BL 0,5 

R/

B

 0

,5

 

R 2,5 

BL

 2

,5 

BL 2,5 

P 2,5 

P 2,5 

G/Y 2,5 

PLUG 

MAINS LEAD 

G/Y 2,5 

BLK FLYING
LEADS 

B 0,5 

G/Y 1,0 

TERMINAL BLOCK 

G/Y 2,5 

G/Y 2,5 

G/Y 1,0 

G/Y 1,0 

G/Y 1,0 

G/Y 1,0 

BR 0,5 

GND

L1

L2

C3 

C1 

C2 

GR/

B

 0

,5

 

LP SWITCH 

HP SWITCH 

GR/B 0,5 

O/

B

L 0

,5

 

FAULT 

V 0

,5 

V 0

,5

 

LAMP 

FL 

MC 

G/Y (G USA) 

BR (BL USA) 

B (W USA) 

HEX

 

WA
T

E

R

 

PU
M

P

 

HEX UNIT 

MV
 

AI

R

 

ST
AT
 

1 4 

HP L

P

 

FS

FS2 

A2
 

A1
 

FL
 

MC
 

C1
 

C3
 

S R 

AUX 

N/

C

 

mi

ns

 

DL
 

C2
 

MV
 

CL
 

S2
 

FT
 

RL
 

S1 

SUMP HEATER 

F1

10A

F3

COOL 

FAN ONLY 

LOW 

HIGH 

IN

 

COM

 

NC
 

IN

 

OU
T

 

NO 

PUMP 

CONTROLLER 

TIME 

MP
 

DELAY 

K 1 

FAN SPEED CAP

C4

ISS

C/N

APPD

DATE

R

c

U.C.C.

CALOREX HEAT PUMPS LTD  

MATERIAL

FINISH

DO NOT SCALE PRINT

DRAWING CHANGE

 


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Page9

F4

CONTROL FUSE 10A 

B 0,5

1A

B 2,5 

B 2,5 

B 2,5 

R/BL 0,5 

B 0,5 

B 0,5 

GR

N(

G

R

N/

Y

E

L

BLK 

D355552 

LABEL D64355553 

D355552 

WIRING DIAGRAM 

PAC320DX/HEX320D

ISSU

E 2 

HEX UNIT 

--- 

CJW 19:01:02 

NTS 

AIR STAT 

3 POSN SWITCH 

A B 

21 

DELAY TIMER 

1 4 

2 3 

DEFROST STAT 

FAN MOTOR 

SOLENOID VALVE 

CONDENSATE 

FLOAT SWITCH 

HIGH LEVEL 

FLOAT SWITCH 

LOW LEVEL 

MAINS 

DEFROST 

CHILL 

BR 2,

B

 2.

BR 2,5 

B 0,5 

B 0,5 

CONTACTOR  B 

AUX 

A1 

22 

BR 0,5 

BR 

B 0,5 

B 0,5 

BR 0,5 

R/BR 0,5 

W

 0,

BL/W 0,5 

RELAY No 1 

W

/BL

 0,

P 0,5 

P

 0,

P 0,5 

O/

B

L

 0

,5

 

O 0,5 

O 0,5 

GR/B 0,5 

W/

R

 0

,5

 

W/

R

 0

,5

 

B 0

,5 

G/

R 0

,5

 

R 0,5 

W 0

,5

 

GR 0,5 

GR 0

,5

 

BR 0,5 

BR

 0

,5 

B

R

 1,

BLACK

BROWN 

BR 0,5 

BLUE

R 2

,5

 

BL

 2,

5

 

FLYING LEAD 

FLYING LEAD 

SUMP 

GREY

GREY

GREY

GREY

R/

B

R

 0

,5

 

BR

 0,

W

/BL

 0,

B 0

,5 

BR

 2

,5 

B 2

,5 

W/R 0,5 

B 0,5 

W/R 0,5 

G/Y 1,0 

G/Y 1,0 

B 0,5 

B 0

,5 

W/

R

 0

,5

 

W

 0,

O 0,5 

BR

 0,

B 0,5 

BR 

G/Y 1,0 

PUMP 

W/R 0,5 

W 0,5 

G/

R 0

,5

 

G

/R

 0,

B 0

,5

 

BR

 0

,5 

B

R

 0,

FAN ONLY 

COOL 

W/BL LINK 

GR 0,5 

B 0,5 

WATER PUMP 

BR 1,0 

N/C 

AT 

S1 

CL DL RL 

FT 

MV 

MP 

FS1 

FS2 

NOTE ORIENTATION OF SWITCHES 

B 0,

A2 

W 0

,5

 

2,5 

0,5 

0,5 

B 0,

5

 

8 COM 

7 N/C 

6 N/O 

5 FAULT SIGNAL 

4 OUT 

3 SIGNAL IN 

2 L 

1 N 

B 0

,5 

B 0,

PUMP CONTROLLER 

PUMP 

FAN MOTOR 

CA

PA

C

IT

O

CA

P

A

C

IT

O

BASE PLATE 

EARTH 

M

A

IN

S

 SUPPL

Y

 

L1

 

L2

 

GND 

WHT 

BLK 

GRN 

GRN/YEL 1,50 

BRN 

BRN 

WHT 1,00 

PR

OT

EC

TO

R

 

MAINS 

START 

NO

 

NC

 

WATER STAT 

BLK 

R

E

D(

NO

T

 U

S

E

D

WH

T

 

BL

K

 

WIRED TO RUN COUNTER CLOCKWISE 

R

EVE

R

S

IN

G PLU

G

 

YEL(WHT) 

BL

K

 

GR

N(

GR

N

/Y

E

L)

 

/WHT 

BLK 

T Z 

F2 

CONTROL FUSE 10A 

CONDENSATE FUSE 1A 

BR 0,5 

BR 0,5 

G/R 0,5 

F1 

F3 

FLYING LEADS 

BLK 1,00 

WHT 

YEL(WHT) 

BLK 

BLK 

GRN 
GRN (GRN/YEL) 

GRN 

G/Y

2 POSN SWITCH 

FAN SPEED 

S2 

HIGH

LOW

TOLERANCE UNLESS SPECIFIED

HOLES TO BS 4500 

E12

INSPECTION LEVEL

DIMS

SHT No.

CONT'

DRAWN

DRG No.

APPROVED

DATE

SCALE

IF IN DOUBT ASK

TITLE 

DRG No.

 


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