Toshiba HWS-P804HR-E, HWS-P1104HR-E Instruction Manual
AIR TO WATER HEAT PUMP
Installation Manual
Outdoor Unit
Model name:
HWS-P804HR-E
HWS-P1104HR-E
English
Air to Water Heat Pump
Please read this Installation Manual carefully before installing the Air to Water Heat Pump.
• This Manual describes the installation method of the outdoor unit.
• For installation of the hydro unit, follow the Installation Manual attached to the hydro unit.
Installation Manual
Original instruction
REFRIGERANT
This Air to Water Heat Pump uses an HFC refrigerant (R410A) in order to prevent destruction of the ozone
layer.
▼ HWS-P804HR-E, HWS-P1104HR-E
Equipment complying with IEC 610003-12.
1-EN
–1–
Air to Water Heat Pump
Installation Manual
Contents
1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Accessory parts and refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Installation of new refrigerant air to water heat pump. . . . . . . . . . . . . . . . . . . . . . . . 8
4 Installation conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Refrigerant piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Air purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7 Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8 Earthing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9 Finishing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10 Test run. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11 Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12 Air to water heat pump operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
13 Functions to be implemented locally. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
14 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
15 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
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2-EN
Air to Water Heat Pump
Installation Manual
Generic denomination: air to water heat pump
Definition of qualified installer or qualified service person
The air to water heat pump must be installed, maintained, repaired and removed by a qualified installer or qualified
service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them
for you.
A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in
the table below.
Agent Qualifications and knowledge which the agent must have
• The qualified installer is a person who installs, maintains, relocates and removes the air to water heat
pumps made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate
and remove the air to water heat pump made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such operations by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to these operations.
• The qualified installer who is allowed to do the electrical work involved in installation, relocation and
removal has the qualifications pertaining to this electrical work as stipulated by the local laws and
regulations, and he or she is a person who has been trained in matters relating to electrical work on the
air to water heat pump made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
Qualified installer
acquainted with the knowledge related to this work.
• The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation,
relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as
stipulated by the local laws and regulations, and he or she is a person who has been trained in matters
relating to refrigerant handling and piping work on the air to water heat pump made by Toshiba Carrier
Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals
who have been trained and is thus thoroughly acquainted with the knowledge related to this work.
• The qualified installer who is allowed to work at heights has been trained in matters relating to working at
heights with the air to water heat pump made by Toshiba Carrier Corporation or, alternatively, he or she
has been instructed in such matters by an individual or individuals who have been trained and is thus
thoroughly acquainted with the knowledge related to this work.
Qualified service
person
• The qualified service person is a person who installs, repairs, maintains, relocates and removes the air
to water heat pump made by Toshiba Carrier Corporation. He or she has been trained to install, repair,
maintain, relocate and remove the air to water heat pump made by Toshiba Carrier Corporation or,
alternatively, he or she has been instructed in such operations by an individual or individuals who have
been trained and is thus thoroughly acquainted with the knowledge related to these operations.
• The qualified service person who is allowed to do the electrical work involved in installation, repair,
relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local
laws and regulations, and he or she is a person who has been trained in matters relating to electrical work
on the air to water heat pump made by Toshiba Carrier Corporation or, alternatively, he or she has been
instructed in such matters by an individual or individuals who have been trained and is thus thoroughly
acquainted with the knowledge related to this work.
• The qualified service person who is allowed to do the refrigerant handling and piping work involved in
installation, repair, relocation and removal has the qualifications pertaining to this refrigerant handling and
piping work as stipulated by the local laws and regulations, and he or she is a person who has been
trained in matters relating to refrigerant handling and piping work on the air to water heat pump made by
Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an
individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge
related to this work.
• The qualified service person who is allowed to work at heights has been trained in matters relating to
working at heights with the air to water heat pump made by Toshiba Carrier Corporation or, alternatively,
he or she has been instructed in such matters by an individual or individuals who have been trained and
is thus thoroughly acquainted with the knowledge related to this work.
3-EN
–3–
Air to Water Heat Pump
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote
electric power supplies
before servicing.
WARNING
Moving parts.
Do not operate unit with grille
removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned
when removing this panel.
CAUTION
Do not touch the aluminum
fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before
the operation, otherwise there
might be the burst.
Installation Manual
Definition of protective gear
When the air to water heat pump is to be transported, installed, maintained, repaired or removed, wear protective
gloves and “safety” work clothing.
In addition to such normal protective gear, wear the protective gear described below when undertaking the special
work detailed in the table below.
Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns,
electric shocks and other injuries.
Work undertaken Protective gear worn
All types of work
Electrical-related work
Work done at heights (50 cm or
more)
Transportation of heavy objects Shoes with additional protective toe cap
Repair of outdoor unit Gloves to provide protection for electricians and from heat
Protective gloves
“Safety” working clothing
Gloves to provide protection for electricians and from heat
Insulating shoes
Clothing to provide protection from electric shock
Helmets for use in industry
Warning Indications on the Air to water heat pump Unit
Warning indication Description
WARNING
ELECTRICAL SHOCK HAZARD
Disconnect all remote electric power supplies before servicing.
WARNING
Moving parts.
Do not operate unit with grille removed.
Stop the unit before the servicing.
CAUTION
High temperature parts.
You might get burned when removing this panel.
CAUTION
Do not touch the aluminum fins of the unit.
Doing so may result in injury.
CAUTION
BURST HAZARD
Open the service valves before the operation, otherwise there might be the
burst.
–4–
4-EN
Air to Water Heat Pump
WARNING
Installation Manual
1 Precautions for safety
• Ensure that all Local, National and International regulations are satisfied.
• Read this “Precautions for safety” carefully before Installation.
• The precautions described below include the important items regarding safety.
Observe them without fail.
• After the installation work, perform a test run to check for any problem.
Follow the Owner’s Manual to explain how to use and maintain the unit to the customer.
• Turn off the main power supply switch (or breaker) before the unit maintenance.
• Ask the customer to keep the Installation Manual together with the Owner’s Manual.
•
Ask an authorized dealer or qualified installation professional to install / maintain the Air to Water Heat Pump.
Inappropriate installation may result in water leakage, electric shock or fire.
• Be sure to connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.
• Turn off the main power supply switch or breaker before attempting any electrical work.
Make sure all power switches are off. Failure to do so may cause electric shock.
Use an exclusive power circuit for the Air to Water Heat Pump. Use the rated voltage.
• Connect the system interconnection wire correctly.
If the system interconnection wire is connected in a wrong way, electric parts may be damaged.
• When moving the Air to Water Heat Pump for the installation into another place, be very careful not to enter
any gaseous matter other than the specified refrigerant 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 may resultingly causes pipe burst and injuries on persons.
• Do not modify this unit by removing any of the safety guards or by by-passing any of the safety interlock
switches.
• After unpacking the unit, examine it carefully if there are possible damage.
• Do not install in a place that might increase the vibration of the unit.
• To avoid personal injury (with sharp edges), be careful when handling parts.
• Perform installation work properly according to the Installation Manual.
Inappropriate installation may result in water leakage, electric shock or fire.
• When the Air to Water Heat Pump hydro unit is installed in a small room, provide appropriate measures to
ensure that the concentration of refrigerant leakage occur in the room does not exceed the critical level.
• Tighten the flare nut with a torque wrench in the specified manner.
Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in
refrigerant leakage.
• Wear heavy gloves during the installation work to avoid injury.
• Install the Air to Water Heat Pump securely in a location where the base can sustain the weight adequately.
• Perform the specified installation work to guard against an earthquake.
If the Air to Water Heat Pump is not installed appropriately, accidents may occur due to the falling unit.
• If refrigerant gas has leaked during the installation work, ventilate the room immediately.
If the leaked refrigerant gas comes in contact with fire, noxious gas may generate.
• After the installation work, confirm that refrigerant gas does not leak.
If refrigerant gas leaks into the room and flows near a fire source, such as a cooking range, noxious gas might
generate.
• Electrical work must be performed by a qualified electrician in accordance with the Installation Manual.
Make sure the Air to Water Heat Pump uses a dedicated power supply.
An insufficient power supply capacity or inappropriate installation may cause fire.
• Use the specified wires for wiring connect the terminals securely fix.
To prevent external forces applied to the terminals from affecting the terminals.
5-EN
–5–
Air to Water Heat Pump
CAUTION
• When the Air to Water Heat Pump cannot cool or heat water well, contact the dealer from whom you
purchased the Air to Water Heat Pump as refrigerant leakage is considered as the cause.
In the case of repair that requires refill of refrigerant, ask service personnel about details of the repair.
The refrigerant used in the Air to Water Heat Pump is harmless.
Generally, the refrigerant does not leak. However, if the refrigerant leaks in a room and a heater or stove burner in
the room catches fire, it may generate toxic gas.
When you ask service personnel for repairing refrigerant leakage, confirm that the leakage portion has been
completely repaired.
• Conform to the regulations of the local electric company when wiring the power supply.
Inappropriate grounding may cause electric shock.
• Do not install the Air to Water Heat Pump in a location subject to a risk of exposure to a combustible gas.
If a combustible gas leaks, and stays around the unit, a fire may occur.
• Install the refrigerant pipe securely during the installation work before operating the Air to Water Heat Pump.
If the compressor is operated with the valve open and without the refrigerant pipe, the compressor sucks air and the
refrigeration cycle is overpressurized, which may cause a burst or injury.
• For the refrigerant recovery work (collection of refrigerant from the pipe to the compressor), stop the
compressor before disconnecting the refrigerant pipe.
If the refrigerant pipe is disconnected while the compressor is working with the valve open, the compressor sucks air
and the refrigeration cycle is overpressurized, which may cause a burst or injury.
Installation Manual
New refrigerant air to water heat pump installation
• This air to water heat pump adopts the new HFC refrigerant (R410A) which does not destroy ozone layer.
• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is
approx. 1.6 times higher than that of refrigerant R22. Accompanied with the new refrigerant, refrigerating oil has also
been changed. Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does
not enter the refrigerating cycle.
• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of
the main unit and installation tools are changed from those for the conventional refrigerant.
• Accordingly the exclusive tools are required for the new refrigerant (R410A).
• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not
enter.
To disconnect the appliance from main power supply
• This appliance must be connected to the main power supply by means of a switch with a contact separation of at
least 3 mm.
• The installation fuse must be used for the power supply line of this unit.
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6-EN
Air to Water Heat Pump
2 Accessory parts and refrigerant
Accessory parts
Part name Qty Shape Usage
Hand this directly to the customer.
Outdoor unit installation manual 1
Drain nipple 1
Waterproof rubber cap 5
Protective bush 1 For protecting wires (pipe cover)
(For other languages that do not appear in this
Installation Manual, please refer to the enclosed
CD-R.)
Installation Manual
Guard material for passage part 1 For protecting passage part (pipe cover)
7-EN
–7–
Air to Water Heat Pump
Installation Manual
3 Installation of new refrigerant air to water
heat pump
• The R410A refrigerant is more susceptible to impurities such as water, oxide membranes, oils, and fats.
With the adoption of the new refrigerant, the refrigerating oil has also been changed.
Be careful not to let water, dust, conventional refrigerant, and/or conventional refrigerating oil enter the
refrigerating cycle of the new refrigerant air to water heat pump.
• To prevent different refrigerant or refrigerating oil from becoming mixed, the sizes of the charging port of the unit
and the installation tool connection sections are different from those of the conventional refrigerant. Accordingly,
the following exclusive tools are required for the new refrigerant R410A.
Required tools / equipment and precautions for use
Prepare the tools and equipment listed in the following table before starting the installation work.
Newly prepared tools and equipment must be used exclusively.
Legend
: Prepared newly (Use for R410A only. Do not use for refrigerant R22 or R407C etc.)
: Conventional tools / equipment are available
Tools / equipment Use How to use tools / equipment
Gauge manifold
Charging hose Prepared newly for R410A only
Charging cylinder Can not be used
Gas leak detector Gas leak check Prepared newly
Vacuum pump Vacuum drying Unusable
Vacuum pump with backflow
prevention function
Flare tool Flare machining of pipes Usable if dimensions are adjusted.
Bender Bending pipes R22 (Conventional tools)
Refrigerant recovery equipment Refrigerant recovery For R410A only
Torque wrench Tightening flare nuts Exclusive for Ø12.7 mm and Ø15.9 mm
Pipe cutter Cutting pipes R22 (Conventional tools)
Welding machine and nitrogen
cylinder
Refrigerant charging measure Charging refrigerant R22 (Conventional tools)
Vacuuming / charging refrigerant
and operation check
Vacuum drying R22 (Conventional tools)
Welding pipes R22 (Conventional tools)
Prepared newly for R410A only
Unusable (Use the refrigerant charging measure
instead.)
–8–
8-EN
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