Toshiba HWS-455H-E User manual

Outdoor unit
HWS-455H-E
AIR TO WATER HEAT PUMP
INSTALLATION MANUAL
ENGLISH

PRECAUTIONS FOR SAFETY
ACCESSORY PARTS
INSTALLATION DIAGRAM OF OUTDOOR UNITS
Optional Installation Parts
Installation Place
Refrigerant Piping Connection
Evacuating
ELECTRICAL WORKS
Wiring Connection
Power Supply and Connecting Cable Connection
Power supply input Wiring Diagram
OTHERS
Gas Leak Test
Earthing
Finishing
Test run
Annual maintenance
Air to water heat pump operating conditions
CONTENTS EN
.................................................................................................................................................
................................................................................................................................................................
..................................................................................................................
......................................................................................................................................................
...................................................................................................................................................................
...............................................................................................................................................
.............................................................................................................................................................................
...........................................................................................................................................................
...............................................................................................................................................................
..............................................................................................................
....................................................................................................................................
1
7
7
7
8
8
9
10
10
10
10
11.................................................................................................................................................................................
....................................................................................................................................................................
..............................................................................................................................................................................
.............................................................................................................................................................................
...............................................................................................................................................................................
..........................................................................................................................................................
......................................................................................................................
11
11
11
11
11
11

EN
EN
FR
IT
DE
PT
PL
CZ
RU
CR
HU
TR
NL
GR
SV
FI
NO
DK
RO
BG
EE
LV
SK
SI
1
PRECAUTIONS FOR SAFETYPRECAUTIONS FOR SAFETY
The manufacturer shall not assume any liability for the damage caused by not
observing the description of this manual.
Be sure to read this installation manual carefully before installing.
Recommend to the owner to perform maintenance periodically when using over
long periods of time.
Be sure to follow the precautions provided here to avoid safety risks. The symbols
and their meanings are shown below.
DANGER : It indicates that incorrect use of this unit can result in a high
possibility of severe injury (*1) or death.
WARNING : It indicates that incorrect use of this unit may cause severe injury or
death.
CAUTION : It indicates that incorrect use of this unit may cause personal injury
(*2), or property damage (*3).
*1 : A severe injury refers to blindness, injury, burns (hot or cold),
electrical shock, bone fracture, or poisoning that leaves
aftereffects and requires hospitalization or extended out-patient
treatment.
*2 : Personal injury means a slight accident, burn, or electrical
shock which does not require admission or repeated hospital
treatment.
*3 : Property damage means greater damage which affects assets
or resources.
01_1120551201-1 EN.indd 101_1120551201-1 EN.indd 1 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

2
CAUTION
• THIS AIR TO WATER HEAT PUMP USES THE NEW HFC REFRIGERANT
(R410A), WHICH DOES NOT DESTROY THE OZONE LAYER.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing
membranes, and oils because the pressure of R410A refrigerant is approx.
1.6 times of refrigerant R22. As well as the adoption of this new refrigerant,
refrigerating machine oil has also been changed. Therefore, during installation
work, be sure that water, dust, former refrigerant, or refrigerating machine oil
does not enter the refrigeration cycle of a new-refrigerant air to water heat pump.
To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging
port connecting sections on the main unit are different from those for the
conventional refrigerant, and different size tools are also required. For
connecting pipes, use new and clean piping materials with high pressure
withstand capabilities, designed for R410A only, and ensure that water or
dust does not enter. Moreover, do not use any existing piping as its pressure
withstand may be insufficient and may contain impurities.
New refrigerant air to water heat pump installation
For general public use
Power supply cord of parts of appliance shall be at least polychloroprene sheathed
flexible cord (design H07RN-F) or cord designation 60245 IEC66 (1.5 mm2or
more). (Shall be installed in accordance with national wiring regulations.)
01_1120551201-1 EN.indd 201_1120551201-1 EN.indd 2 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

EN
EN
FR
IT
DE
PT
PL
CZ
RU
CR
HU
TR
NL
GR
SV
FI
NO
DK
RO
BG
EE
LV
SK
SI
3
DANGER
• FOR USE BY QUALIFIED PERSONS ONLY.
• MEANS FOR DISCONNECTION FROM THE SUPPLY HAVING A CONTACT
SEPERATION OF AT LEAST 3 mm IN ALL POLES MUST BE INCORPORATED
IN THE FIXED WIRING.
• TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL
WORK. MAKE SURE ALL POWER SWITCHES ARE OFF. FAILURE TO DO SO
MAY CAUSE ELECTRIC SHOCK.
• CONNECT THE CONNECTING CABLE CORRECTLY. IF THE CONNECTING
CABLE IS CONNECTED WRONGLY, ELECTRIC PARTS MAY BE DAMAGED.
• CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED
BEFORE INSTALLATION.
• DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR
GAS VAPORS. FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN
FIRE OR EXPLOSION.
• TO PREVENT OVERHEATING THE HYDRO UNIT AND CAUSING A FIRE
HAZARD, PLACE THE UNIT WELL AWAY (MORE THAN 2 M) FROM HEAT
SOURCES SUCH AS RADIATORS, HEATERS, FURNACE, STOVES, ETC.
• WHEN MOVING THE AIR TO WATER HEAT PUMP FOR INSTALLING IT IN
ANOTHER PLACE AGAIN, BE VERY CAREFUL NOT TO GET THE SPECIFIED
REFRIGERANT (R410A) WITH ANY OTHER GASEOUS BODY INTO THE
REFRIGERATION CYCLE. IF AIR OR ANY OTHER GAS IS MIXED IN THE
REFRIGERANT, THE GAS PRESSURE IN THE REFRIGERATION CYCLE
BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF
THE PIPE AND INJURIES ON PERSONS.
• IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE
DURING THE INSTALLATION WORK, IMMEDIATELY LET FRESH AIR
INTO THE ROOM. IF THE REFRIGERANT GAS IS HEATED BY FIRE OR
SOMETHING ELSE, IT CAUSES GENERATION OF POISONOUS GAS.
• WHEN INSTALLING OR RE-INSTALLING THE AIR TO WATER HEAT PUMP,
DO NOT INJECT AIR OR OTHER SUBSTANCES BESIDES THE DESIGNATED
REFRIGERANT “R410A” INTO THE REFRIGERATING CYCLE. IF AIR OR
OTHER SUBSTANCES ARE MIXED, AN ABNORMAL PRESSURE CAN
OCCUR IN THE REFRIGERATING CYCLE, AND THIS CAN CAUSE AN
INJURY DUE TO A PIPE RUPTURE.
01_1120551201-1 EN.indd 301_1120551201-1 EN.indd 3 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

4
WARNING
• Installation work must be requested from the supplying retail dealership. Self-
installation may cause water leakage, electrical shock, or fire as a result of
improper installation.
• Specified tools and pipe parts for model R410A are required, and installation
work must be done in accordance with the manual. HFC type refrigerant R410A
has 1.6 times more pressure than that of conventional refrigerant (R22). Use the
specified pipe parts, and ensure correct installation, otherwise damage and/or
injury may be caused. At the same time, water leakage, electrical shock, and fire
may occur.
• Be sure to install the unit in a place which can sufficiently bear its weight. If the
load bearing of the unit is not enough, or installation of the unit is improper, the
unit may fall and result in injury.
• Electrical work must be performed by a qualified supplying retail dealership
in accordance with the code governing such installation work, internal wiring
regulations, and the manual. A dedicated circuit and the rated voltage must be
used. Insufficient power supply or improper installation may cause electrical
shock or fire.
• Use a cabtyre cable to connect wires in the hydro/outdoor units. Midway
connection, stranded wire, and single-wire connections are not allowed.
Improper connection or fixing may cause a fire.
• Wiring between the hydro unit and outdoor units must be well shaped so that
the cover can be firmly placed. Improper cover installation may cause increased
heat, fire, or electrical shock at the terminal area.
• Be sure to use only approved accessories or the specified parts. Failure to do so
may cause the unit to fall, water leakage, fire or electrical shock.
• After the installation work, ensure that there is no leakage of refrigerant gas. If
the refrigerant gas leaks out of the pipe into the room and is heated by fire or
something else from a fan heater, stove or gas range, it causes generation of
poisonous gas.
• Make sure the equipment is properly earthed. Do not connect the earth wire to a
gas pipe, water pipe, lightning conductor, or telephone earth wire.
Improper earth work may be the cause of electrical shock.
• Do not install the unit where flammable gas may leak. If there is any gas leakage
or accumulation around the unit, it can cause a fire.
• Do not select a location for installation where there may be excessive water or
humidity, such as a bathroom. Deterioration of insulation may cause electrical
shock or fire.
01_1120551201-1 EN.indd 401_1120551201-1 EN.indd 4 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

EN
EN
FR
IT
DE
PT
PL
CZ
RU
CR
HU
TR
NL
GR
SV
FI
NO
DK
RO
BG
EE
LV
SK
SI
5
• Installation work must be performed following the instructions in this installation
manual. Improper installation may cause water leakage, electrical shock or fire.
Check the following items before operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it
may cause overpressure and result in compressor damage. At the same
time, if there is a leak in the connection part, it may cause air suction and
overpressure, resulting burst or injury.
• In pump down operations, ensure to perform the following procedures.
- Do not inject air into the refrigeration cycle.
- Be sure to close both service valves and stop the compressor before removing
the refrigerant pipe. If removing the refrigerant pipe while the compressor is
operating with the service valves opened, it may cause to air absorbed and
abnormal high pressure inside the refrigeration cycle and resulting burst or
injury.
• Do not modify the power cable, connect the cable midway, or use a multiple
outlet extension cable. Doing so may cause contact failure, insulation failure, or
excess current, resulting in fire or electrical shock.
• Do not use any refrigerant different from the one specified for complement or
replacement. Otherwise, abnormally high pressure may be generated in the
refrigeration cycle, which may result in a failure or explosion of the product or an
injury to your body.
• Be sure to comply with local regulations/codes when running the wire from the
outdoor unit to the hydro unit. (Size of wire and wiring method etc.)
• Places where iron or other metal dust is present. If iron or other metal dust
adheres to or collects on the interior of the air to water heat pump, it may
spontaneously combust and start a fire.
• If you detect any damage, do not install the unit. Contact your supplying dealer
immediately.
• Never modify this unit by removing any of the safety guards.
01_1120551201-1 EN.indd 501_1120551201-1 EN.indd 5 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

6
CAUTION
• Please read this installation manual carefully before installing the unit. It contains
further important instructions for proper installation.
• Exposure of unit to water or other moisture before installation could result in
electric shock. Do not store it in a wet basement or expose to rain or water.
• After unpacking the unit, examine it carefully for possible damage.
• Do not install in a place that can increase the vibration of the unit. Do not
install in a place that can amplify the noise level of the unit or where noise and
discharged air might disturb neighbors.
• This appliance must be connected to the main power supply by means of a
circuit breaker depending on the place where the unit is installed. Failure to do
so may cause electrical shock.
• Follow the instructions in this installation manual to arrange the drain pipe for
proper drainage from the unit. Ensure that drained water is discharged.
Improper drainage can result in water leakage, causing water damage to
furniture.
• Tighten the flare nut with a torque wrench using the prescribed method. Do not
apply excess torque. Otherwise, the nut may crack after a long period of usage
and it may cause the leakage of refrigerant.
• Wear gloves (heavy gloves such as cotton gloves) for installation work. Failure
to do so may cause personal injury when handling parts with sharp edges.
• Do not touch the air intake section or the aluminum fins of the outdoor unit. It
may cause injury.
• Do not install the outdoor unit in a place which can be a nest for small animals.
Small animals could enter and contact internal electrical parts, causing a failure
or fire.
• Request the user to keep the place around the unit tidy and clean.
• Make sure to conduct a trial operation after the installation work, and explain
how to use and maintain the unit to the customer in accordance with the manual.
Ask the customer to keep the operation manual along with the installation
manual.
01_1120551201-1 EN.indd 601_1120551201-1 EN.indd 6 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

EN
EN
FR
IT
DE
PT
PL
CZ
RU
CR
HU
TR
NL
GR
SV
FI
NO
DK
RO
BG
EE
LV
SK
SI
7
ACCESSORY PARTSACCESSORY PARTS
Part name Q’ty Shape
Outdoor unit installation manual 1
Drain nipple 1
Waterproof rubber cap 2
Energy label 2
Product fiche 1
• Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be
exposed to a strong wind.
• Use Ø8 mm or Ø10 mm anchor bolts and nuts.
• If it is necessary to drain the defrost water, attach drain nipple and cap
water proof to the bottom plate of the outdoor unit before installing it.
Fixing bolt arrangement of outdoor unit
INSTALLATION DIAGRAM OF OUTDOOR UNITSINSTALLATION DIAGRAM OF OUTDOOR UNITS
Part
code Parts name Q’ty
A
Refrigerant piping
Liquid side : Ø6.35 mm
Gas side : Ø12.7 mm
One
each
BPipe insulating material
(polyethylene foam, 6 mm thick) 1
CPutty, PVC tapes One
each
Optional Installation Parts
600 mm or more
100 mm or more
100 mm or more
600 mm or more
600 mm or more
Remark :
• Some pictures might be different from the
actual parts.
Drain outlet
Air inlet
Air outlet
125 mm
108 mm Ø25 mm
29 mm
330 mm
106 mm
121 mm
99 mm600 mm
* Drain nipple and
cap water proof are
packed in outdoor
unit.
Insulate the refrigerant pipes separately
with insulation, not together.
6 mm thick heat resisting
polyethylene foam
01_1120551201-1 EN.indd 701_1120551201-1 EN.indd 7 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM

8
90°
A
Die Pipe
Refrigerant Piping Connection
1. Cut the pipe with a pipe cutter.
2. Insert a flare nut into the pipe and flare the pipe.
• Projection margin in flaring : A (Unit : mm)
Rigid (clutch type)
Imperial (wing nut type)
Outer dia. of copper pipe R410A
Ø6.35 1.5 to 2.0
Ø12.70 2.0 to 2.5
Outer dia.
of copper pipe R410A tool used Conventional tool used
Ø6.35 0 to 0.5 1.0 to 1.5
Ø12.70 0 to 0.5 1.0 to 1.5
Flaring
Obliquity Roughness Warp
Installation Place
• A place which provides the spaces around the outdoor unit as shown in
the diagram
• A place which can bear the weight of the outdoor unit and does not allow
an increase in noise level and vibration
• A place where the operation noise and discharged air do not disturb your
neighbors
• A place which is not exposed to a strong wind
• A place free of a leakage of combustible gases
• A place which does not block a passage
• When the outdoor unit is to be installed in an elevated position, be sure to
secure its feet.
• A place where the drain water does not raise any problems
CAUTION
1. Install the outdoor unit without anything blocking the air discharging.
2. When the outdoor unit is installed in a place always exposed to strong
wind like a coast or on a high storey of a building, secure the normal fan
operation using a duct or a windshield.
3. In particularly windy areas, install the unit such as to avoid admission of
wind.
4. Installation in the following places may result in trouble.
Do not install the unit in such places.
• A place full of machine oil
• A saline-place such as the coast
• A place full of sulfide gas
• A place where high-frequency
waves are likely to be generated
as from audio equipment, welders,
and medical equipment
Strong
wind
Incused line
Flare at hydro
unit side
Flare at outdoor
unit side
Flare nut
Half union
Externally
threaded side
Internally
threaded side
Use a wrench to secure. Use a torque wrench to tighten.
CAUTION
Align the centers of the connecting pipes and tighten the flare nut as far as
possible with your fingers. Then tighten the nut with a spanner and torque
wrench as shown in the figure.
Tightening connection
Do not apply excess torque. Otherwise, the nut may crack depending on
the conditions.
(Unit : N·m)
Outer dia. of copper pipe Tightening torque
Ø6.35 mm 14 to 18 (1.4 to 1.8 kgf·m)
Ø12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
• Tightening torque of flare pipe connections
The operating pressure of R410A
is higher than that of R22 (approx.
1.6 times). It is therefore necessary
to firmly tighten the flare pipe
connecting sections (which connect
the hydro and outdoor units) up to the
specified tightening torque. Incorrect
connections may cause not only a
gas leakage, but also damage to the
refrigeration cycle.
1. How to shape the pipes
Shape the pipes along the incused line on
the outdoor unit.
2. How to fit position of the pipes
Put the edges of the pipes to the place with
a distance of 85 mm from the incused line.
Shaping pipes
Refrigerant pipe
H: max. ±10 m (above / below)
L: max. 15 m, min 5 m
15 m chargeless
Hydro Unit
Outdoor unit
15 m chargeless
L
H
Refrigerant pipe length
01_1120551201-1 EN.indd 801_1120551201-1 EN.indd 8 5/18/2560 BE 3:12 PM5/18/2560 BE 3:12 PM