Atlantic Calypso FS 172L User manual

The energy ecient heat
pump water heater
Calypso
INSTALLATION
MANUAL
19 Feb 24
UIN 235818 A03 B 700U07382380
*Image for illustration purposes only

This manual is to be left with the end user as it includes
instructions for maintenance, troubleshooting, after sales
service, and is used as a service record. The products
included in this manual have been independently
conrmed to comply with BS EN 12897: 2016.

CONTENTS ...............................................................................................................3
WARNINGS ...............................................................................................................4
DESCRIPTION .......................................................................................................11
1. Technical Characteristics .............................................................................11
2. Declaration of conformity .............................................................................13
3. Safety instructions ........................................................................................13
4. Transportation and storage ..........................................................................13
5. Packaging contents ......................................................................................14
6. Handling .......................................................................................................15
7. Manual handling ...........................................................................................16
8. Dimensions ..................................................................................................17
INSTALLATION ......................................................................................................18
9. Installation ....................................................................................................18
10. Hydraulic connection ....................................................................................19
11. Air connection ..............................................................................................27
12. Electrical connection ....................................................................................31
13. Filling the water heater .................................................................................32
14. Initial start-up ...............................................................................................33
15. Installation parameters .................................................................................34
16. Vericationofcorrectoperation ...................................................................37
17. Commissioning checklist ..............................................................................38
18. Service record ..............................................................................................39
MAINTENANCE .....................................................................................................40
19. User instructions ..........................................................................................40
20. Maintenance ................................................................................................40
21. Troubleshooting ...........................................................................................45
22. After-sales service .......................................................................................51
CONTENTS
Warnings Description Installation Maintenance

INSTALLATION:
CAUTION: Heavy product, handle with care:
1/ Install the appliance in a frost-free room. The appliance
is not covered by the warranty if it is permanently damaged
as a result of overpressure caused by the expansion relief
valve being blocked.
2/ Ensure that the oor can support the weight of the
appliance lled with water.
3/ If the appliance has to be installed in a room where the
ambient temperature is constantly higher than 35°C, then
provide ventilation for this room.
4/ In a bathroom, do not install this
product in Zone 0, Zone 1 or Zone
2 designated areas. Any low voltage
equipment installed into zone 1 or
zone 2 needs a minimum rating of
IPX4. Electrical wiring can be routed through zone 2.
5/ This product is intended to be used at a maximum
altitude of 2,000 m.
6/ Place the appliance in an accessible location.
7/ Refer to the installation drawings in the Installation
chapter.
8/ The water heater must be xed to the oor (in accordance
with article 20 of EN 60335-1) using the xing system
provided for this purpose.
WARNINGS
4
Warnings Description Installation Maintenance
0.60 m
0.60 m
0.60 m

9/ The HPWH installation must be in accordance with
the relevant requirements of the Building Regulations,
IET Wiring Regulations and the Water Fitting Regulations
(England and Wales) or Water Byelaws (Scotland).
10/ Calypso is covered by Section G3 of the Building
Regulations (England and Wales) Technical Standard P3
(Scotland) and Building Regulation P5 (Northern Ireland).
Compliance can be achieved via a Competent Person
Self Certication Scheme or notication of installation to
the Local Authority Building Control Department. It must
be installed by a competent person as dened by the
relevant regulations. Manufacturers notes must NOT be
taken as over-riding statutory obligations.
11/ Calypso is factory tted with a temperature & pressure
relief valve that must not be used for any other purpose
or removed.
12/ Calypso is factory tted with an immersion heater with
thermal cut outs. Immersions without thermal cut outs
must not be tted.
13/ This product has been manufactured using many
recyclable materials, including the approved HCFC/CFC
free polyurethane foam insulation. At the end of its useful
life, it should be disposed of at a Local Authority Recycling
Centre, to maximize the products full environmental
benets.
5
Warnings Description Installation Maintenance

MAINTENANCE:
Modications should not be made to this product.
Replacement parts, including immersion heaters, should
be purchased from Atlantic , or agents approved by them.
Unvented hot water storage vessels need regular routine
checks, and these are detailed below. It is for this reason
that this manual must always be left with the Calypso.
It is essential that these checks be carried out at the time
of heat pump maintenance by a qualied installer:
1. Manually open the relief valves in turn, and check
that water is discharged from the valves and runs freely
through the tundish and out at the discharge point. Ensure
that the valves re-seat satisfactorily. (Note - the water may
be very hot).
2. It is important to check that the discharge pipework is
carrying the water away adequately. Check for blockages
etc. if it is not.
3. Isolate the cold supply to the cylinder. Remove the inlet
control valve. Inspect the mesh lter on the inlet side and
remove any debris.
4. Check the charge pressure in the expansion vessel and
re-charge if required
5. Re-ll the system and ensure that all relief valves have
re-seated.
6. The Benchmark Service Record should be updated at
each service.
6
Warnings Description Installation Maintenance

7. Check the water pressure downstream of the
combination valve is 3 bar in static condition.
The Registered Installer is responsible for the safe
installation and operation of the system. The installer must
also make his customer aware that periodic maintenance
of the equipment is essential for safety. Maintenance
periods will vary for many reasons.
Atlantic recommend a maximum of 12 months to coincide
with heat pump maintenance. Experience of local water
conditions may indicate that more frequent maintenance
is desirable, eg, when water is particularly hard, scale-
forming or where the water supply contains a high
proportion of solids, eg, sand.
After servicing, complete the relevant Service Interval
Record section of the Benchmark Checklist located on
the inside back pages of this document.
HYDRAULIC CONNECTION:
This unit is supplied with an inlet control group. The
pressure reducing valve is set at 3.0 Bar and the expansion
relief valve is set at 4.5 Bar. This must be tted to the
water inlet pipe in a frost-free environment.
The Inlet control group supplied with this product will stand
a maximum mains pressure of 16 Bar. We advise that if
the mains pressure is consistently above 6 Bar consider
tting another pressure reducing valve (PRV), and if the
mains pressure is greater than 9 Bar t another PRV.
7
Warnings Description Installation Maintenance

Adjustable PRV’s are available. The additional PRV’s
need to be tted upstream of the inlet control group and
in multiple occupancy sites may be tted as a whole site
solution.
The expansion relief valve can be coupled with the TPRV
discharge pipework prior to the tundish. This way any
discharge should run away out of the building.
Discharges from the expansion relief valve usually indicate
a fault which needs to be addressed. For example the
expansion vessel charge pressure is too low.
If the discharge is hot and continuous, turn the power o󰀨,
but do not turn o󰀨 the cold water to the appliance until the
discharge is cold.
Note: The discharge should stop by itself as the
discharge cools.
However, in both cases you must call the registered
installer / a suitably qualied, competent tradesperson,
advise them that you have an unvented cylinder and
request a maintenance visit.
DO NOT, at any time, tamper in any way with the safety
valves or overheat thermostats.
There is a port on the inlet control group which can be
used to connect the expansion vessel. In any case the
expansion vessel should be tted here or between the
inlet control group and the cylinder.
8
Warnings Description Installation Maintenance

The Calypso is supplied with a drain elbow. This should
be tted to the cold water supply connection to enable
draining the cylinder.
IMPORTANT - DRAIN DOWN PROCEDURE:
1. Switch o󰀨 the HPWH.
2. Open the nearest hot tap and run all hot water until
cold, then close it.
3. Close the incoming cold main at the stop tap
4. Hold open the pressure and temperature relief valve
until water stops discharging into the tundish and leave it
open
5. Open the cold taps starting from the highest point and
working down to the lowest tap, leaving them open
6. When the cold taps have stopped draining, open the
hot taps starting from the highest and working down to the
lowest tap
7. Open the drain cock and ensure the pressure and
temperature relief valve is held open until the cylinder is
empty
Note: The cold supply elbow c/w drain tapping must
be to the cold water tapping. A exible hose can then be
connected to the drain tapping. The cylinder contents
can be drained to the tapping level. This is adequate
for all servicing requirements. If the cylinder is being
disconnected and removed then it may be tilted to drain
any water remaining in the cylinder.
9
Warnings Description Installation Maintenance

ELECTRICAL CONNECTION:
WARNING: Do not attempt the electrical work unless
you are competent to do so.
Before removing the cover, ensure that the power supply
is switched o󰀨 to avoid any risk of injury or electric shock.
The electrical installation must include an all-pole cut-out
device (circuit breaker, fuse) upstream of the appliance
in accordance with BS 7671 Requirements for electrical
installations. The appliance requires protection which can
be provided by a 30mA Residual current device.
Please refer to the wiring diagrams on the back of
the cover.
Connection to ground is compulsory. A special terminal,
designated , is provided for this purpose. Ensure local
isolation is provided within 1m (Double check with the
commentor).
10
Warnings Description Installation Maintenance

11
Warnings Description Installation Maintenance
1. Technical Characteristics
Product Details
Product reference CALYPSO FS 172L CALYPSO FS 210L
Model Code/Number AH876509 AH886123
Product Name ATL CV4 STAINLESS
STEEL FS 172L
ATL CV4 STAINLESS
STEEL FS 210L
Heat Pump Performance
Air operating range (ducted conguration) °C -5 to 43
Air operating range (Ambient air conguration) °C 5 to 43
Achievable hot water temp via heat pump °C 62
Max. electrical power input (heat pump AND
immersion) W 650 + 1600 = 2250
Max.Thermal power output from heat pump
ONLY at 45°C W 1345
Air ow m³/h
Nominal air ow 400m3/hr to 240m3/hr with
associated maximum ducting pressure drop
50Pa to 150Pa.
Sound power level dB(A) 49
Refrigerant -/kg R134a / 0,85kg R134a / 0,86kg
Air ducting method Separate inlet & outlet to exterior
Coe󰀩cient of performance (M prole, 7°C) - 2.78 2.81
Energy e󰀩ciency (ηwh) % 117.0 118.4
Heating time from cold (10°C to 54°C) h 5h48 7h18
Standing power input W 19 19
Maximum usable hot water volume (V40,
EN16147(2017)) litres 228.0 285.2
Presure loss during test Pa 60.0 54.3
Airow during test m3/h 387.0 402.6
Coe󰀩cient of performance (L prole,7 °C) - 3.15 3.02
Energy e󰀩ciency (ηwh) % 129.40 124.35
Heating time from cold (10°C to 54°C) h 5h44 7h27
Standing power input W 17 20
Maximum usable hot water volume (V40,
EN16147(2017)) litres 227.0 285.1
Presure loss during test Pa 58 57
Airow during test m3/h 386.0 391.6
DESCRIPTION

12
Dimensions and Connections
Dimensions mm 1700 x 605 x 695 1940 x 605 x 695
Weight with packaging kg 96.6 97.0
Weight without packaging kg 83.6 84.0
Weight empty (full) kg 15.5 (187.5) 18.0 (228.0)
Air duct diameter mm 160
Max. ducting pressure drop
50Pa @ 400 m³/hr >> COP=3,15 with
172L HPWH [L prole @7°C/86%RH]
150Pa @ 240m³/hr >> COP=2,81 with
172L HPWH [L prole @7°C/86%RH]
Water connections mm 22
Condensate tube mm 16 int / 20 ext
Average condensation production at 7°C - 86%
RH L/h 0.34
Electrical supply (nominal voltage) V 230V 50Hz +15%/-10%
IP rating IPX1B
RCBO/MCB Type C Amp 16
Hot Water Cylinder
Body Material Stainless steel
Insulation thickness (cylinder body to case) mm 63
Maximum water supply pressure bar 16
Maximum inlet pressure (pressure regulator) bar 3.0
Maximum design pressure (expansion relief
pressure) bar 4.5
Temperature and pressure relief valve
(EN1490)
°C 90
bar 6
Integrated electric Immersion W 1600
Max temperature with immersion °C 62
Over heat thermostat operating temperature °C 80 +/-5
Cylinder Capacity litres 172 210
Heat loss W 51 58
kWhr/24h 1.23 1.39
Expansion vessel size litres 22 22
Expansion vessel pre-charge bar 3
Approvals KIWA Building regulations, KIWA Water
regulations, WRAS. (applications in progress)
Accessories Cozy Touch
Guarantee 5 years Tank, 2 years other components

13
Warnings Description Installation Maintenance
3. Safety instructions
Installation and commissioning work on heat pump water heaters can be hazardous due
to high pressures and live parts.
Heat pump water heaters must be installed, commissioned and maintained by trained and
qualied personnel only.
4. Transportation and storage
Please follow the transportation and handling recommendations shown on the
water heater packaging.
We will not be liable for any product defect resulting from product transportation
or handling that is not in accordance with our recommendations.
Stacking this product is strictly forbidden.
2. Declaration of conformity
This device complies with the following directives:
• 2014/35/EU with respect to low voltage
• 2014/53/EU with respect to RED (Radio Equipment Directive)
• 2014/30/EU with respect to electromagnetic compatibility (EMC)
• 2015/863/EU and 2017/2102/EU with respect to restricting hazardous substances
(RoHS)
• 2013/814/UE supplementing Ecodesign directive 2009/125/EC
States that the product complies with the essential requirements of directive RED 2014/53/
EU, as designated below:
Designation: IHM BD3.2
Type : 868 MHZ RADIO TRANSMITTER - RECEIVER
States that the essential radio tests have been performed, per the following standards:
Electromagnetic compatibility: EN 301 489-3 : 2019
E󰀩cient use of the radioelectric spectrum: EN 300 220-2 : 2017
Year EC marking a󰀩xed: 2023

14
Warnings Description Installation Maintenance
5. Packaging contents
Item Description Qty
1 Installation instructions 1
2 Operating instructions 1
3 160 mm Ø ducting adaptors 2
4
Cold water inlet PRV combination valve/expansion relief
-Maximum inlet pressure to16 bar
-Operating pressure (PRV setting) 3 bar
-Expansion relief valve setting 4.5 bar
1
5
Pressure and temperature relief valve (supplied tted to comply
with UK Building Regulation G3*)
-Opening pressure of P & T Relief Valve 6 bar
-Opening temperature of P & T Relief Valve 90°C
1
6 Tundish 1
7
Set (four parts packaged and cable-tied together) consisting of:
2 x compression nuts - 22 mm
2 x copper olives - 22 mm
1
8Expansion vessel/mounting bracket
-Expansion vessel charge pressure 3 bar 1
9 90 degree drain elbow 1
10 Adustable foot (to be inserted under the water heater) 4

15
Warnings Description Installation Maintenance
Warnings Description Installation Maintenance
6. Handling
Please follow the transportation and handling recommendations shown on the
water heater packaging. The front column must always remain on top when
carrying horizontally.
Use the tilt handle (A) to tilt the water heater
backwards.
A
Use the carrying handles (B) and the
carrying straps (C) to carry the water heater.
B
C
Do not lift with the tilt handle (A).
A

16
Warnings Description Installation Maintenance
Warnings Description Installation Maintenance
7. Manual handling
Description
Manual handling means any transporting or supporting of a load (including lifting,
putting down, pushing, pulling, carrying or moving) by hand or bodily force.
Scope
This assessment will cover the largest unit within each product range.
For specic weights and dimensions please refer to technical data section.
Main Hazards
Vision may not be clear due to the size of the products.
Adopting an incorrect method of lifting may cause injury, attempting to lift these
products will require help from others. (Team lifts)
Control Measures
Manual lifting procedure
The lift, key factors in safe lifting are:
a. Balance
b. Position of back
c. Positioning of the arms and body
d. The hold
e. Taking the lead for team lifts
a. Balance - Since balance depends essentially upon the position of the feet,
they should be apart about hip breadth with one foot advanced giving full
balance sideways and forward without tension. In taking up this position,
lifting is done by bending at the knees instead of the hips and the muscles
that are brought into use are those of the thigh and not the back.
b. Position of back - Straight - not necessary vertical. The spine must be
kept rigid, this coupled with a bent knee position, allows the centre line of
gravity of the body to be over the weight so reducing strain.
c. Positioning of arms and body - The further arms are away from the side,
the greater the strain on the shoulders, chest and back. Keep elbows close
to the body arms should be straight.
d. The hold - Before lifting ensure you have a good hold.
e. Taking the lead for team lifts- As
more than one person is required
for these products ensure that one
person is taking the lead. This may
be you so ensure that each person
that is helping is made aware of the
weight and of the items listed within
this assessment. Make sure you and
any others helping know the route
you intend to take that it is clear of
any obstructions. Never jerk the load
as this will add a little extra force and
can cause severe strain to the arms,
back and shoulders. If there are steps
involved decide on where you will
stop and take a rest period. Move
smoothly and in unison taking care
to look and listen to others helping
with the lift. Where possible use
a sack truck to move the product
over long at distances, only lift the
products when necessary. If in doubt
stop and get more help.
Individual capability
Individual capability plays an important
part in handling these products. Persons
above average build and strength will
nd it easier and should be in good
health. Persons below average build and
strength may require more rest periods
during the handling process.
Pregnant women should not carry out
this operation.
Persons who are not in good health
should seek medical advice prior to
commencing any lifting or manual
handling operation.
Residual risk
Following the guidelines given above will
reduce any risk to injury.
All persons carrying out this operation
must be fully trained and copies of the
specic risk assessment made available
for inspection and use in their training
process.
Further guidance on Manual Handling
can be obtained from the Health and
Safety Executive. Manual Handling
Operations Regulations 1992 (amended
by Health and Safety (Miscellaneous
Amendments) Regulations 2002.
MANUAL HANDLING OF APPLIANCE PRODUCTS

17
Warnings Description Installation Maintenance
8. Dimensions
172 litres 210 litres
ATotal height irrespective of the orientation of the openings 1693 mm 1940 mm
BHeight of the control unit 1310 mm 1550 mm
CHeight of the PTRV 1010 mm 1253 mm
DHeight of the siphon condensates drain 780 mm 1020 mm
EHeight of the hot water outlet 960 mm 1200 mm
FHeight of the cold water inlet 302 mm 302 mm
GTotal depth 691 mm 691 mm
F
368 mm
602 mm
125 mm
G
G
113 mm
508 mm
602 mm
Upwards
oriented
openings
Sidewards
oriented
openings
Back-
wards
oriented
openings
G
Openings orientable in 3 positions
Note: This product may be inspected internally
by removing the immersion heater and using an
endoscope to check for scale etc.
A
B
C
F
D E
Top view

18
Warnings Description Installation Maintenance
9. Installation
The Calypso product must be ducted to provide the necessary air inlet and air exhaust connections.
Typically, the air connections are ducted to the outside of the building however it is possible to extract
air from another space that must not be within the thermal envelop of the building, i.e. an insulated loft
space or garage that is adequately ventilated.
Irrespective of the selected installation conguration, the installation site must comply with protection
index IP X1B, in accordance with the requirements of BS 7671.
The oor must be able to support a minimum load of 400 kg (surface area underneath the water heater).
The water heater must be xed to the oor (in accordance with article 20 of
standard EN 60335-1) using the xing strap provided for this purpose.
The water heater must be installed on a smooth and horizontal
floor and must not be in contact with a wall
The legend plate located above
the hot water outlet must be
accessible at all �mes
Before filling, the water
heater must be levelled
with shims if necessary
Minimum floor-to-ceiling height
required to lift the product:
172L :1747mm
210L :1978mm
Fix the water heater to the floor with the strap
(the fixing lug can be positioned on the
right or on the left).
Failure to follow the installation recommendations may cause the system
to underperform.
Leave a 500 mm space in front of the electrical equipment and a 300 mm space
in front of the hydraulic equipment, in order to grant access to the water heater
for periodic maintenance.
The maximum pressure drop across the appliance must be respected when
designing the air inlet and air exhaust ducting routes
All ducting must be installed and insulated e󰀨ectively by a component person
to ensure correct operation of the appliance and that no condensation forms
on the ducting routes. The appliance manufacturer will not take responsibility
for poorly designed or tted ducting installations.

19
Warnings Description Installation Maintenance
10. Hydraulic connection
Installing a secondary circulation loop on the appliance is prohibited. If the appliance
fails on an installation with looping, the warranty does not apply. For more information,
please contact the after-sales service.
The highest hot or cold water draw o󰀨 point should not exceed 10 metres above the Pressure
Reducing Valve.
An ascending spray type bidet or any other appliance with a Class 1 back-syphonage risk requiring
a type A air gap should not be used.
If the supply to the mixer ttings (other than a dual outlet type) is not taken from the balanced supply
the system will become over pressurized and cause the pressure relief valve to discharge. Over time
this could also cause the premature failure of the appliance itself which will not be covered by the
warranty
In larger properties with a number of bathrooms/en-suites and long pipe runs we would recommend
that the balance cold supply is provided with its own pressure reducing valve and is not taken from
the balanced cold connection on the combination valve. In this case it will also be necessary to t
a small expansion vessel on the balanced cold water system to accommodate the pressure rise
caused by the increase in temperature of the balanced cold water.
Check the performance requirements of the terminal ttings with regard to ow/ pressure are suitable.
In relation to potable water systems, expansion vessels shall be installed in a vertical orientation and
located so that the length of the connecting pipe work is kept to a minimum.
Aerated taps are recommended to prevent splashing.
Any type of shower mixing valve can be used as long as both the hot and cold supplies are mains fed.
However, all mains pressure systems are subject to dynamic changes particularly when other hot
and cold taps/showers are opened and closed, which will cause changes in the water temperature
at mixed water outlets such as showers. For this reason and because these are now no more
expensive than a manual shower we strongly recommend the use of thermostatic showers with this
appliance. These must be used in 3 storey properties where the impact on pressure/temperature of
opening another tap in the system is greater than normal. The shower head provided must also be
suitable for mains pressure supplies.
The cold water inlet is marked with a blue collar and the hot water outlet is marked with a red collar.
The cold water inlet and the hot water outlet are provided with 22mm compression ttings.
Plastic Pipework
This appliance is suitable for use with plastic pipework as long as the material is recommended for
the purpose by the manufacturer and is installed fully in accordance with their recommendations.
10.1. Cold water connection
Before connecting the hydraulics, check that the mains pipes are clean.
Inlet control group 3 bar pressure reducing valve and 4.5 bar expansion relief valve. Also an
expansion vessel must be tted.

20
Warnings Description Installation Maintenance
Mains Water Supply
Existing properties with a 15mm supply will be satisfactory provided the local mains pressure is
good, but should be conned to single bathroom properties. For new properties where simultaneous
demand is required to more than one bathroom or a bathroom and one or more en-suites, the
communication and service pipe into the dwelling should be a minimum of 22mm (usually in the
form of a 25mm MDPE supply). The optimum performance is achieved if the inlet pressure is 3
bar dynamic. However, the Calypso will function with lower inlet pressures, but this will reduce the
performance. For optimum performance, 30L per minute incoming mains ow should be present,
however the Calypso will work at lower ow rates, although performance will be a󰀨ected. Normally
Calypso provides well in excess of 40 litres/min in most conditions. Flow rates for ALL mains pressure
systems are subject to district pressures and system dynamic loss. Particularly on larger properties
with more than one bathroom, the pipe sizes should be calculated in accordance with BS EN 806-
3:2006 and BS 8558:2011.
The Installation of the components supplied with the Calypso should be installed as per the schematic
below.
Note. The schematic shows pipework infront of the appliance. Normally pipework will be routed
behind the appliance within the 120mm service space. This prevents the panel from being
trapped by the pipework.
No valve must be placed between the cylinder and the inlet control group.
1
1
2
2
3
3
4
4
5
5
6
6
A A
B B
C C
D D
REV No REVISION DATE APPROVED
This drawing is the property of
Gledhill Building Products Ltd 
and may not, without the express
written consent of the company, be
copied in whole or in part, or used
for any purpose other than that for
which it is supplied.
Gledhill Building Products Ltd
Sycamore Estate
Blackpool
FY4 3RL
Tel No: 01253 474550
Fax No: 01253 474551
www.gledhill.net
Status
Material Specification
Original Scale:
All Dimensions In Millimetres
Do Not Scale If In Doubt-Ask
Drawn
Checked
Eng. Approval
Mfg. Approval
Date
Date
Date
Date
Project
Title
Drawing No Sheet No.
FOR REVIEW
See Component Drawings
A T a z i k er
31/10/2022
G0158 - HP Water Heater
Schematic Layout
G0158-SCH 1 /1
Drawing No
G0158-SCH -D1
Rev No.
D1
Sh1 /1
A3
Tolerance +/- 1.0mm1 : 8
Drawing to be read in conjunction
with relevant works instructions.
TO DRAIN
15mm
22mm
HOT TAPS
COLD MAINS IN
BALANCED COLD FEED
CYLINDER
DRAIN
PreliminaryCopy
INLET CONTROL GROUP
PRESSURE & TEMPERATURE
RELIEF VALVE
P & T TO TUNDISH
MAX DISTANCE 600mm
D1 Expansion vessel + drain elbow added 15/02/2023
EXPANSION
VESSEL
CAUTION:
Make sure that the
Tundish is routed
away from electrical
devices. This is
to prevent any
accidental damage
due to splashes
during any discharge.