Toshiba ESTIA HWS-802H-E User manual

Toshiba XXXXXXX(<SanSerif1>X/X)Toshiba XXXXXXX(<SanSerif1>X/X)
Installation manual
Air to Water Heat Pump 2
English
AIR TO WATER HEAT PUMP
Outdoor Unit
Model name:
HWS-802H-E
HWS-1102H-E
HWS-1402H-E
Manuel d’installation
Pompe à chaleur air/eau 24
Français
Installations-handbuch
Luft-/Wasserwärmepumpe 46
Deutsch
Installationshandbok
Luft-till-vatten-värmepump 68
Svenska
Installation manual
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Air to Water Heat Pump Outdoor Unit Installation Manual
Contents
1 ACCESSORY PARTS AND REFRIGERANT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 PRECAUTIONS FOR SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 INSTALLATION OF NEW REFRIGERANT AIR TO WATER HEAT PUMP . . . . . . . . . 5
4 SELECTION OF INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 REFRIGERANT PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6 AIR PURGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7 ELECTRICAL WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8 EARTHING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 FINISHING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
10 TEST RUN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11 ANNUAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
12 FUNCTIONS TO BE IMPLEMENTED LOCALLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
13 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
14 APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
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.
ADOPTION OF NEW REFRIGERANT
This Air to Water Heat Pump is a new type which adopts a new refrigerant HFC (R410A) instead of the
conventional refrigerant R22 in order to prevent destruction of the ozone layer.
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EN
Air to Water Heat Pump Outdoor Unit Installation Manual
1ACCESSORY PARTS AND REFRIGERANT
Accessory parts
Refrigerant Piping
• Piping kit used for the conventional refrigerant cannot be used.
• Use copper pipe with 0.8 mm or more thickness for Ø9.5 mm.
Use copper pipe with 1.0 mm or more thickness for Ø15.9 mm.
• Flare nut and flare works are also different from those of the conventional refrigerant.
Take out the flare nut attached to the Air to Water Heat Pump, and use it.
Part name Q’ty Shape Usage
Outdoor unit
Installation manual 1 This manual (Hand this directly to the customer.)
Drain nipple 1
Waterproof rubber cap 5
Protective bush 1 For protecting wires (pipe cover)
Guard material for passage
part 1 For protecting passage part (pipe cover)
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Air to Water Heat Pump Outdoor Unit Installation Manual
2PRECAUTIONS 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 trial operation 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.
WARNING
• 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 connecting wire correctly.
If the connecting 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 an exclusive 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.
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Air to Water Heat Pump Outdoor Unit Installation Manual
WARNING
•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.
CAUTION
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 25 A (All type fuse can be used) must be used for the power supply line of this unit.
3INSTALLATION OF NEW REFRIGERANT
AIR TO WATER HEAT PUMP
• The R410A refrigerant is more susceptible to impurities such as water, oxide membrane, oils, and fats. With the
adoption of the new refrigerant, refrigerating oil has also been changed.
Be careful so that water, dust, conventional refrigerant, and/or conventional refrigerating oil do not enter the
refrigerating cycle of the new refrigerant Air to Water Heat Pump.
• To prevent different refrigerant or refrigerating oil being mixed, the sizes of the charging port of the unit and the
installation tool connecting sections are different from the conventional refrigerant. Accordingly the following
exclusive tools are required for the new refrigerant R410A.
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Air to Water Heat Pump Outdoor Unit Installation Manual
Required Tools/Equipment and Precautions for Use
Prepare the tools and equipment listed in the following table before starting 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
Refrigerant Piping
New refrigerant (R410A)
When using the conventional piping kit
• When using the conventional piping kit that has no indication of applicable refrigerant types, be sure to use it with
a wall thickness of 0.8 mm for Ø6.4 mm, Ø9.5 mm, and Ø12.7 mm, and with a wall thickness of 1.0 mm for Ø15.9
mm. Never use the conventional piping kit with a wall thickness less than these thicknesses due to insufficient
pressure capacity.
When using general copper pipes
• Use general copper pipes with a wall thickness of 0.8 mm for Ø6.4 mm, Ø9.5 mm, and Ø12.7 mm, and with a
wall thickness of 1.0 mm for Ø15.9 mm.
Never use any copper pipes with a wall thickness less than these thicknesses.
Flare nuts and flare machining
• The flare nuts and flare machining are different from those for the conventional refrigerant.
Use the flare nuts supplied with the Air to Water Heat Pump or those for R410A.
• Before performing flare machining, carefully read “REFRIGERANT PIPING”
Tools/equipment Use How to use tools/equipment
Gauge manifold Vacuuming/charging
refrigerant and operation
check
Prepared newly for R410A only
Charging hose Prepared newly for R410A only
Charging cylinder Can not be used Unusable (Use the refrigerant charging measure instead.)
Gas leak detector Gas leak check Prepared newly
Vacuum pump with backflow
prevention function Vacuum drying Unusable
Vacuum pump with backflow
prevention function Vacuum drying R22 (Conventional tools)
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)
Refrigerant cylinder Charging refrigerant For R410A only
Discriminated by the refrigerant name on the cylinder.
Welding machine and nitrogen
cylinder Welding pipes R22 (Conventional tools)
Refrigerant charging measure Charging refrigerant R22 (Conventional tools)
5-EN
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Air to Water Heat Pump Outdoor Unit Installation Manual
EN
4SELECTION OF INSTALLATION
Before installation
Be careful to the following items before installation.
Length of refrigerant pipe
* Do not connect a refrigerant pipe shorter than 3m.
This may cause a malfunction of the compressor or
other devices.
Airtight test
1. Before starting an airtight test, further tighten the
spindle valves on the gas side and liquid side.
2. Pressurize the pipe with nitrogen gas charged from
the service port to the design pressure (4.15 Mpa) to
conduct the airtight test.
3. After the airtight test is completed, evacuate the
nitrogen gas.
Air purge
• For air purge, use a vacuum pump.
• Do not use refrigerant charged in the outdoor unit for
air purge. (The refrigerant for air purge is not
contained in the outdoor unit.)
Electrical wiring
Be sure to fix the power wires and hydro/outdoor
connecting wires with clamps so that they do not
contact with the cabinet, etc.
Earthing
WARNING
Make sure that proper earthing is provided.
Improper earthing may cause electric shock. For how
to check earthing, contact the dealer who installed the
Air to Water Heat Pump or a professional installation
company.
• Proper earthing can prevent charging of electricity on
the outdoor unit surface due to high frequency of the
frequency converter (inverter) in the outdoor unit, as
well as prevent electric shock. If the outdoor unit is
not properly earthed, you may feel electric shock.
• 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.
Test Run
• Start test run when the water piping work is
completed and the system is filled with the proper
amount of water.
• Turn on the leakage breaker at least 12 hours before
starting a test run to protect the compressor during
startup.
CAUTION
Incorrect work may result in a malfunction or
complaints of customers.
Length of refrigerant
pipe connected to hydro/
outdoor unit Item
3 m to 30 m Addition of refrigerant is
unnecessary at the local site.
6-EN
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Air to Water Heat Pump Outdoor Unit Installation Manual
Installation Place
WARNING
Install the outdoor unit properly at a place that is
durable enough to the weight of the outdoor unit.
Insufficient durability may cause the outdoor unit to fall,
which may result in injury.
CAUTION
Do not install the outdoor unit at a place subject to
combustible gas leak.
Accumulation of combustible gas around the outdoor
unit may cause a fire.
Install the outdoor unit at a place that meets the
following conditions after customer’s consent is
obtained.
• A well-ventilated place free from obstacles near the
air inlets and air outlet
• A place that is not exposed to rain or direct sunlight
• A place that does not increase the operating noise or
vibration of the outdoor unit
• A place that does not cause any drainage problem
with discharged water
Do not install the outdoor unit at the following
places.
• A place full of saline atmosphere (coastal area) or
sulfide gas (hot-spring area)
(Special maintenance is required.)
• A place subject to oil, vapor, oily smoke, or corrosive
gas
• A place where organic solvent is used
• A place where high-frequency equipment (including
inverter equipment, private power generator,
medical equipment, and communication equipment)
is used
(Installation in this place may cause malfunction of
the Air to Water Heat Pump, abnormal control or
problems due to noise to such equipment.)
• A place where the discharged air of the outdoor unit
blows against the window of the neighboring house
• A place where the operating noise of the outdoor unit
is transmitted
• When the outdoor unit is installed in an elevated
position, be sure to secure its feet.
• A place where the drain water does not make any
problem.
CAUTION
1. Install the outdoor unit at a place where
discharge air is not blocked.
2. When an outdoor unit is installed in a place that
is always exposed to a strong wind like a coast
or on a high storey of a building, secure a
normal fan operation by using a duct or a wind
shield.
3. When installing the outdoor unit in a place that
is constantly exposed to a strong wind such as
the upper stairs or rooftop of a building, apply
the windproof measures referring to the
following examples.
1) Install the unit so that its discharge port faces
to the wall of the building.
Keep a distance 500 mm or more between the
unit and the wall surface.
2) Supposing the wind direction during the
operation season of the Air to Water Heat
Pump, install the unit so that the discharge port
is set at right angle to the wind direction.
• When using an Air to Water Heat Pump under low
outside temperature condition (Outside temp.:-5 °C or
lower) with COOL mode, prepare a duct or wind shield
so that it is not affected by the wind.
<Example>
500
Strong
wind
Strong
wind
Wind shield
Wind shield
Wind shield
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Air to Water Heat Pump Outdoor Unit Installation Manual
EN
Necessary Space for Installation (Unit:mm)
Obstacle at rear side
▼Upper side is free
1. Single unit installation
2. Obstacles at both right and left sides
3. Serial installation of two or more units
▼Obstacle also at the upper side
Obstacle at front side
▼Upper side is free
1. Single unit installation
2. Serial installation of two or more units
▼Obstacle also at the upper side
Obstacles at both front and rear sides
Open the upper side and both right and left sides.
The height of obstacle at both front and rear side,
should be lower than the height of the outdoor unit.
▼Standard installation
1. Single unit installation
150
or more
The height of the
obstacle should be
lower than the height
of the outdoor unit.
200
or more
150
or more 300 or more
The height of the obstacle should be lower
than the height of the outdoor unit.
200 or more
150
or more 300 or more 300 or more 300 or more
150
or more
500
or more
500
or more
1000
or more
1000
or more
1000
or more
150
or more
1000
or more
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Air to Water Heat Pump Outdoor Unit Installation Manual
2. Serial installation of two or more units
Serial installation at front and rear sides
Open the upper side and both right and left sides.
The height of obstacle at both front and rear sides
should be lower than the height of the outdoor unit.
▼Standard installation
Installation of Outdoor Unit
• Before installation, check strength and horizontality
of the base so that abnormal sound does not
generate.
• According to the following base diagram, fix the base
firmly with the anchor bolts.
(Anchor bolt, nut: M10 x 4 pairs)
• As shown in the figure below, install the foundation
and vibration-proof rubbers to directly support the
bottom surface of the fixing leg that is in contact with
the bottom plate of the outdoor unit.
* When installing the foundation for an outdoor unit
with downward piping, consider the piping work.
Set the out margin of the anchor bolt to 15 mm or less.
200
or more
1000
or more
300
or more 300 or more
1000
or more 300 or more 1500 or more 2000 or more 200 or more
150
150 600
525
45
365
400
Drain hole
Drain
nipple mounting hole
Drain hole
GOOD
Fixing leg
Absorb vibration
with vibration-
proof rubbers
Foundation
GOOD
NO GOOD
Foundation
Foundation
If only the end of the
fixing leg is
supported, it may be
deformed.
Do not support
the outdoor unit
only with the
fixing leg.
Bottom plate
of outdoor unit
Support the bottom surface of
the fixing leg in contact with
the bottom plate of the outdoor
unit.
15 or less
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Air to Water Heat Pump Outdoor Unit Installation Manual
EN
• In case of draining through the drain hose, attach the
following drain nipple and the waterproof rubber cap,
and use the drain hose (Inner diam.: 16 mm) sold on
the market. And also seal the screws securely with
silicone material, etc. so that water does not drop
down. Some conditions may cause dewing or
dripping of water.
• When collectively draining discharged water
completely, a drain pan must be made locally.
For Reference
If a heating operation would be continuously performed
for a long time under the condition that the outdoor
temperature is 0 °C or lower, draining of defrosted
water may be difficult due to freezing of the bottom
plate, resulting in a trouble of the cabinet or fan.
It is recommended to procure an anti-freeze heater
locally for a safety installation of the Air to Water Heat
Pump.
For details, contact the dealer.
Drain nipple Waterproof rubber cap
(5pcs.)
Waterproof rubber cap
Drain nipple
10-EN
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Air to Water Heat Pump Outdoor Unit Installation Manual
5REFRIGERANT PIPING
Knockout of Pipe Cover
Knockout procedure
• The hydro/outdoor connecting pipes can be
connected to 4 directions.
Take off the knockout part of the pipe cover in which
pipes or wires pass through the base plate.
• Detach the piping cover and give an impact on the
knockout section a few times with the shank of a
screwdriver. A knockout hole can easily be punched.
• After punching the knockout hole, remove burrs of
the hole and then install the supplied protective bush
and guard material for passage part to protect wires
and pipes.
Be sure to attach the pipe covers after pipes have
been connected. Cut the slits under the pipe covers
to facilitate the installation.
After connecting the pipes, be sure to mount the pipe
cover. The pipe cover is easily mounted by cutting off
the slit at the lower part of the pipe cover.
* Be sure to wear heavy work gloves while working.
Optional Installation Parts
(Local Procure)
Refrigerant Piping
Connection
CAUTION
TAKE NOTICE THESE IMPORTANT
4 POINTS BELOW FOR PIPING WORK
1. Keep dust and moisture away from inside the
connecting pipes.
2. Tightly connect the connection between pipes
and the unit.
3. Evacuate the air in the connecting pipes using
VACUUM PUMP.
4. Check gas leak at connected points.
▼Piping connection
Rear direction
Pipe cover
Side direction
Down direction
Front direction
Parts name Q’ty
A
Refrigerant piping
Liquid side : Ø9.5 mm
Gas side : Ø15.9 mm
Each one
BPipe insulating material
(polyethylene foam, 10 mm thick) 1
CPutty, PVC tapes Each one
Liquid side Gas side
Outer
diameter Thickness Outer diameter Thickness
Ø9.5 mm 0.8 mm Ø15.9 mm 1.0 mm
Supplied passage hole guard
material
* Attach the guard material
securely so that it does not
come loose.
Supplied protective bush
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Air to Water Heat Pump Outdoor Unit Installation Manual
EN
Flaring
1. Cut the pipe with a pipe cutter.
Be sure to remove burrs that may cause gas
leak.
2. Insert a flare nut into the pipe, and then flare the
pipe.
Use the flare nuts supplied with the Air to Water
Heat Pump or those for R410A.
Insert a flare nut into the pipe, and flare the pipe.
As the flaring sizes of R410A differ from those of
refrigerant R22, the flare tools newly manufactured
for R410A are recommended.
However, the conventional tools
can be used by adjusting
projection margin of the copper
pipe.
▼Projection margin in flaring : B (Unit : mm)
Rigid (Clutch type)
▼Flare nut width: H and flare matching size: A.
Flare nut width: H
Flare machining size: A
Do not apply the refrigerator oil to the flare surface.
* In case of flaring for R410A with the
conventional flare tool, pull it out approx.
0.5 mm more than that for R22 to adjust
to the specified flare size.
The copper pipe gauge is useful for
adjusting projection margin size.
Tightening of Connecting
Part
1. Align the centers of the connecting pipes and fully
tighten the flare nut with fingers. Then fix the nut with
a spanner as shown in the figure and tighten it with
a torque wrench.
2. As shown in the figure, be sure to use two spanners
to loosen or tighten the flare nut of the valve on the
gas side. If you use a single spanner, the flare nut
cannot be tightened to the required tightening
torque.
On the other hand, use a single spanner to loosen or
tighten the flare nut of the valve on the liquid side.
(Unit: N•m)
Outer diam. of
copper pipe
R410A tool used Conventional
tool used
R410A
1.0 to 1.59.5 0 to 0.5
15.9
(mm)
Copper pipe
outer diam. Ø6.4 Ø9.5 Ø12.7 Ø15.9 Ø19.0
For R410A 17 22 26 29 36
A +0, -0.4 (mm)
Copper pipe
outer diam. Ø6.4 Ø9.5 Ø12.7 Ø15.9 Ø19.0
For R410A 9.1 13.2 16.6 19.7 24.0
B
H
A
A
Outer diam. of copper pipe Tightening torque
9.5 mm (diam.) 33 to 42 (3.3 to 4.2 kgf•m)
15.9 mm (diam.) 68 to 82 (6.8 to 8.2 kgf•m)
Half union or packed valve Flare nut
Fix with spanner. Tighten with torque wrench.
Externally
threaded side Internally threaded side
Cover
Piping valve
Cap
Tightened
Flare nut
Loosened
Valve at gas side
12-EN
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Toshiba XXXXXXX(<SanSerif1>X/X)
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Air to Water Heat Pump Outdoor Unit Installation Manual
CAUTION
1. Do not put the spanner on the cap or cover.
The valve may be broken.
2. If applying excessive torque, the nut may be
broken according to some installation
conditions.
• After the installation work, be sure to check gas leak
of connecting part of the pipes with nitrogen.
• Pressure of R410A is higher than that of R22
(Approx. 1.6 times).
Therefore, using a torque wrench, tighten the flare
pipe connecting sections which connect the hydro/
outdoor units at the specified tightening torque.
Incomplete connections may cause not only a gas
leak, but also a trouble of the refrigeration cycle.
Refrigerant Pipe Length
Refrigeration pipe
H: max. ±30 m (above/below)
L: max. 30 m, min. 3 m
Cover
NO GOOD
Cap
Do not apply refrigerating machine oil to the
flared surface.
H
L
Hydro Unit
Outdoor unit
30 m chargeless
13-EN
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Toshiba XXXXXXX(<SanSerif1>X/X)
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Air to Water Heat Pump Outdoor Unit Installation Manual
EN
6AIR PURGING
Airtight test
Before starting an airtight test, further tighten the spindle valves on the gas side and liquid side.
Pressurize the pipe with nitrogen gas charged from the service port to the design pressure (4.15 Mpa) to conduct
the airtight test.
After the airtight test is completed, evacuate the nitrogen gas.
Air Purge
With respect to the preservation of terrestrial environment, adopt “Vacuum pump” for air purge
(Evacuate air in the connecting pipes) when installing the unit.
• Do not discharge the refrigerant gas to the atmosphere to preserve the terrestrial environment.
• Use a vacuum pump to discharge the air (nitrogen, etc.) remained in the set. If the air remains,
the capacity may decrease.
For the vacuum pump, be sure to use one with backflow preventer so that the oil in the pump
does not backflow into the pipe of the Air to Water Heat Pump when the pump stops.
(If oil in the vacuum pump is put in an Air to Water Heat Pump including R410A, it may cause trouble on the
refrigeration cycle.)
Vacuum pump
*1Use the vacuum pump, vacuum pump adapter, and
gauge manifold correctly referring to the manuals
supplied with each tool before using them.
Check that the vacuum pump oil is filled up to the
specified line of the oil gauge.
*2When air is not charged, check again whether the
connecting port of the discharge hose, which has a
projection to push the valve core, is firmly connected
to the charge port.
As shown in the figure, connect the charge hose after the manifold
valve are closed completely.
È
Attach the connecting port of the charge hose with a projection to
push the valve core (setting pin) to the charge port of the set.
È
Open handle Low fully.
È
Turn ON the vacuum pump (*1)
È
Loosen the flare nut of the packed valve (Gas side) a little to check
the air passes through. (*2)
È
Tighten the flare nut again.
È
Execute vacuuming until the compound pressure gauge indicates –
101kPa (–76cmHg). (*1)
È
Close handle Low completely.
È
Turn OFF the vacuum pump.
È
Leave the vacuum pump as it is for 1 or 2 minutes, and check the
indicator of the compound pressure gauge does not return.
È
Open fully the valve stem or the valve handle. (First, at liquid side,
then gas side)
È
È
Disconnect the charge hose from the charge port.
È
Tighten valve and caps of the charge port surely.
Pressure gauge
Gauge manifold
valve
Compound pressure gauge
Handle Hi
(Keep fully
closed)
Handle Lo
–101 kPa
(–76 cmHg)
Charge hose
(For R410A only)
Charge port
(Valve core
(Setting pin)) Packed valve
at gas side
Charge hose
(For R410A only)
Vacuum pump
adapter for
counter-flow
prevention
(For R410A only)
Vacuum
pump
14-EN
(continued)
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Toshiba XXXXXXX(<SanSerif1>X/X)
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Air to Water Heat Pump Outdoor Unit Installation Manual
How to open the valve
Confirm the structure surely and then open or close the
valve.
▼Liquid side
Open the valve with a 4-mm hexagon wrench.
▼Gas side
• While the valve is fully opened, after the screwdriver
has reached the stopper, do not apply torque
exceeding 5N•m. Applying excessive torque may
damage the valve.
Valve handling precautions
• Open the valve stem until it strikes the stopper.
It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.
• Cap tightening torque
Replenishing refrigerant
This model is a 30 m chargeless type that does not
need to replenish refrigerant for refrigerant pipes up to
30 m.
Refrigerant replenishing procedure
1. After the vacuuming of the refrigerant pipe is
completed, close the valves and then charge
refrigerant while the Air to Water Heat Pump is not
working.
2. When the refrigerant cannot be charged to the
specified amount, charge the required amount of
refrigerant from the charge port of the valve on the
gas side during cooling.
Requirement for replenishing refrigerant
Replenish liquid refrigerant.
When gaseous refrigerant is replenished, the
refrigerant composition varies, which disables normal
operation.
Additional amount of refrigerant
The refrigerant need not be reduced for a 30 meter (or
less) refrigerant pipe.
Valve size Ø9.5 mm 33 to 42 N•m (3.3 to 4.2 kgf•m)
Ø15.9 mm 20 to 25 N•m (2.0 to 2.5 kgf•m)
Charge port 14 to 18 N•m (1.4 to 1.8 kgf•m)
Valve unit
Charge port
Using a minus
screwdriver, turn it
counterclockwise by
90° until it hits the
stopper. (Full open)
Flare nut
Handle position
Closed completely Opened fully
Stopper pin
Main stopper Movable part of valve (Stem)
15-EN
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Air to Water Heat Pump Outdoor Unit Installation Manual
EN
7ELECTRICAL WORK
WARNING
1. Using the specified wires, ensure to connect the
wires, and fix wires securely so that the external
tension to the wires do not affect the connecting
part of the terminals.
Incomplete connection or fixation may cause a fire,
etc.
2. 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.
3. Appliance shall be installed in accordance with
national wiring regulations.
Capacity shortage of power circuit or incomplete
installation may cause an electric shock or a fire.
CAUTION
• Wrong wiring may cause a burn-out to some electrical
parts.
• Be sure to use the cord clamps attached to the
product.
• Do not damage or scratch the conductive core and
inner insulator of power and inter-connecting wires
when peeling them.
• Use the power and Inter-connecting wires with
specified thickness, specified type and protective
devices required.
• Remove the panel, and you can see electric parts on
the front side.
• A metal pipe can be installed through the hole for
wiring. If the hole size does not fit the wiring pipe to
be used, drill the hole again to an appropriate size.
• Be sure to clamp the power wires and hydro/outdoor
connecting wires with banding band along the
connecting pipe so that the wires do not touch the
compressor or discharge pipe. (The compressor and
the discharge pipe become hot.)
Furthermore, be sure to secure these wires with the
pipe valve fixing plate and cord clamps stored in the
electric parts box.
Wiring between Hydro Unit
and Outdoor Unit
The dashed lines show on-site wiring.
• Connect the hydro/outdoor connecting wires to the
identical terminal numbers on the terminal block of
each unit.
Incorrect connection may cause a failure.
For the Air to Water Heat Pump, connect a power wire
as mentioned below.
Model HWS- 802H-E 1102H-E 1402H-E
Power supply 230 V~, 50 Hz
Maximum
running
current 20.8 A 22.8 A
Installation
fuse rating 25 A (all types can be used)
Power wire H07 RN-F or 60245 IEC 66
(2.5 mm2or more)
Hydro/outdoor
connecting
wires
H07 RN-F or 60245 IEC 66
(1.5 mm2or more)
Electric parts box
Pipe valve
fixing plate
Cord
clamp
Pipe hole
Panel
11
22
L
N33
TB01
Input power
230 V
50 Hz
Hydro Unit
Outdoor Unit
Leakage
breaker
30 mA
16-EN
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Air to Water Heat Pump Outdoor Unit Installation Manual
How to wire
1. Connect the connecting wire to the terminal as
identified with their respective numbers on the
terminal block of hydro and outdoor unit.
H07 RN-F or 60245 IEC 66 (1.5 mm2or more)
2. When connecting the connecting wire to the outdoor
unit terminal, prevent water coming in the outdoor
unit.
3. Insulate the unsheathed cords (conductors) with
electrical insulation tape. Process them so that they
do not touch any electrical or metal parts.
4. For inter connecting wire, do not use a wire jointed
to another on the way.
Use wires long enough to cover the entire length.
Stripping length power cord and connecting
wire
CAUTION
• The installation fuse must be used for the power
supply line of this outdoor unit.
• Incorrect/incomplete wiring might cause an electrical
fire or smoke.
• Prepare the exclusive power supply for the Air to
Water Heat Pump.
• This product can be connected to the mains.
Connection to the fixed wiring :
A switch which disconnects all poles and has a
contact separation of at least 3 mm must be
incorporated in the fixed wiring.
LN
123
Power supply
terminal block
Power supply
wire
Earth screw
To Hydro unit
terminal block
Earth screw
Connecting wire Pipe valve fixing
plate
(mm)
10
10
LN
40
10
50
50
10
30
123
Power supply
wire
Earth lineEarth line
Connecting wire
17-EN
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EN
Air to Water Heat Pump Outdoor Unit Installation Manual
8EARTHING
WARNING
•Be sure to connect earth wire. (grounding work)
Incomplete grounding cause an electric shock.
Connect the earth line properly following applicable technical standards.
Connecting an earth line is essential to prevent electric shock and to reduce noise and electricity charge on the
outdoor unit surface due to high frequency generated by the frequency converter (inverter) in the outdoor unit.
If you touch the charged outdoor unit without earth line, you may feel electric shock.
9FINISHING
After the refrigerant pipe and the inter-unit wires have been connected, cover them with finishing tape and clamp
them to the wall with off-the-shelf support brackets or equivalent.
Keep the power wires and hydro/outdoor connecting wires off the valve on the gas side or pipes that have no heat
insulator.
10TEST RUN
• The test run, on the outdoor unit, can only be completed when the complete Air to Water Heat Pump system has
been installed. (Hydro unit, heating system or/and the others)
• Please refer to the hydro unit installation manual for the details of the test run procedure.
11ANNUAL MAINTENANCE
• For Air to Water system which is operated regularly, cleaning and maintenance of the hydro/outdoor units are
strongly recommended.
As a general rule, if an hydro unit is operated for about 8 hours daily, the hydro/outdoor units will need to be
cleaned at least once every 3-month. This cleaning and maintenance shall be carried out by a qualified person.
Failure to clean the hydro/outdoor units regularly will result in poor performance, icing, water leaking and even
compressor failure.
18-EN
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Air to Water Heat Pump Outdoor Unit Installation Manual
12 FUNCTIONS TO BE IMPLEMENTED LOCALLY
Recovering Refrigerant
• Use the refrigerant recovery switch SW801 on the P.C. board of the outdoor unit to recover refrigerant when the
hydro unit or outdoor unit is moved.
Procedure
1. Drain off the water in the hydro unit.
2. Turn on the power of the Air to Water Heat Pump.
3. Set SW804 on the P.C. board of the outdoor unit to all OFF, and then press SW801 for one second or more.
The Air to Water Heat Pump enters the forced cooling mode for up to 10 minutes. Operation or handling the
valve to recover refrigerant during this time period.
4. Upon completion of refrigerant recovery, close the valve and press SW801 for at least one second to stop
operation.
5. Turn off the power.
DANGER
Take care for an electric shock because the P.C.board is electrified.
1234
ON
1234
ON
Refrigerant
recovery
switch
SW801
Optional
connector
CN610
Special
operation
select switch
SW804
P.C. board
19-EN
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