STIEBEL ELTRON Accelera 300 User manual

OPERATING AND INSTALLATION
OPERACIÓN E INSTALACIÓN
UTILISATION ET INSTALLATION
DHW HEAT PUMP WATER HEATER
CALENTADOR DE AGUA CON BOMBA ELÉCTRICA DE CALOR
CHAUFFE-EAU THERMODYNAMIQUE
» ACCELERA® 300
A 280011-36221-8653
STIEBEL ELTRON Inc.
17 West Street | West Hatfield MA 01088
Tel. [phone] | Fax [phone]
Email [e-mail]
www.stiebel-eltron-usa.com
The Accelera®300 Heat
Pump Water Heater is tested
and certified by WQA against
NSF/ANSI372 for lead free
compliance.

2 | ACCELERA® 300 HEAT PUMP WATER HEATER WWW.STIEBEL-ELTRON-USA.COM
GENERAL INFORMATION
QUICK START-UP GUIDE
GENERAL INFORMATION
Please read Read these instructions carefully and retain them for
future reference. If the water heater is passed on to
a third party please hand these instructions to the
new user.
This manual includes important information regarding the safe
and efficient handling of the water heater. Keep this manual with
the water heater at all times.
Work must only be carried out by a licensed installer who has read
and understands these instructions. All federal, state, and local
codes must be followed. Failure to do so may result in equipment
failure, serious injury, or death.
While working on the water heater, disconnect the power supply.
Illustrations in these instructions are designed to aid a general
understanding and may deviate from the actual water heater
version. No claims can be derived from such illustrations.
Limited liability:
We have collated all details and information in this manual in due
consideration of applicable standards and regulations, the state of
the art and our long-term know-how and experience.
Losses due to the following are excluded from our liability:
- Non-observance of these instructions
- Incorrect use
- Installation of the water heater by unqualified personnel
- Unauthorized modifications
- Technical modifications
- Use of unauthorized spare parts
Copyright:
These operating and installation instructions are subject to
copyright.
Transferring these instructions to third parties, copying of any
kind, either in total or extracts therefrom, as well as their use
and/or conveying its contents are prohibited without our written
consent.
Contraventions are liable to claims for compensation. Further
claims are reserved.
We hold the copyright:
STIEBEL ELTRON Inc.
17 West Street | West Hatfield MA 01088
Tel. [phone] | Fax [phone]
Email [e-mail]
www.stiebel-eltron-usa.com
Should you have any question regarding the installation or
operation of the water heater, please contact our customer service.
Tel. (USA) 800-582-8423 or 413-247-3380
Please record your serial number and information
Serial No.:
____________________________________________________________________
Date of Purchase: ____________________________________________________________
Accelera®300 Quick Start-up Guide
A. OVERVIEW: This water heater hooks up like any other electric water heater, with a few minor exceptions. Be sure to follow
all state and local codes during installation. This page is not intended to be a substitute for the installation manual. Be
sure to follow all safety precautions.
B. UNPACKING: DO NOT unpack water heater unit until it is located at the point of installation. Follow all instructions in the
manual and be sure to use caution, as this unit is top heavy. DO NOT lay the unit down and DO NOT jar or tip the unit past
45 degrees on the hand truck. See: 10.6
C. INSTALLATION / WATER:
a. Location: Find a suitable location according to the manual. Minimum area is 10’ x 10’ x 8’. Be sure vents are parallel to
the wall with the fan facing the most open area along that wall. Please note: a drain pan is recommended. See: 10.6
b. 3/4” Inlet from union provided. For hook-up, follow all state and local codes for check valves, expansion tanks, shut off
valves, gauges, etc. Install a 70 psi pressure reduction valve.
Please note: water pressure should not exceed 0.48 MPa (70 psi). See: 10.7
c. 3/4” Outlet from union to hot water line.
d. Install T&P Relief valve (supplied). Please note: 0.69 MPa / 99 °C (100 psi / 210 °F).
D. CONDENSATE DRAIN: Goes directly into a drain or use a condensate pump to drain into a suitable location. See: 10.6.1
E. FILL & FLUSH TANK: Run water and be sure tank is full prior to turning on the electricity.
F. INSTALLATION / ELECTRICAL: Use a 240 Volt / 15 Amp double pole breaker and connect to water heater L1, L2, and
Ground. See: 16.2
!
WITHIN ABOUT 5 HOURS OF START-UP TIME, EXHAUST
AIR FLOW SHOULD BE APPROXIMATELY -14,4°C (6°F)
LESS THAN THE INLET SIDE. CAUTION: RISK OF SCALDING.
THERE IS A RISK OF SCALDING AT OUTLET
TEMPERATURES EXCEEDING 43°C (110°F) RISK OF
SCALDING

WWW.STIEBEL-ELTRON-USA.COM ACCELERA 300 | 3
QUICK START-UP GUIDE | OPERATION
REQUIRED ROOM DIMENSIONS AND CLEARANCES
15
2´
8
´
Air flow
intake
Air flow
intake
Air flow
exhaust
Air flow
exhaust
2´
2´
2´
Air flow
intake
Air flow
exhaust
´

2
´´ x 8´


D0000018502
›Do not install in a room with
less than 800 cubic feet of
total volume (for example:
10 ft. x 10 ft. x 8 ft.).
›Do not install with the air
exhaust pointing at a wall
or any surface closer than 6
feet away.
›Do not install with the air
intake pointing to a wall or
any surface closer than 2
feet away.
Failure to follow installation
instructions will void the
factory warranty.

ENGLISH
WWW.STIEBEL-ELTRON-USA.COM ACCELERA 300 | 4
QUICK START-UP GUIDE | OPERATION
H
M
C
Cold water
Hot water
2
12 15
13
14
11
3
4
567
89
10
1
1 Vacuum breaker
2 Hot water connection (Union adaptor to 3/4")
3 Mixing valve (optional, supplied by installer)
4 Connection for T&P valve ¾"
5 T&P valve ¾", 0.69 MPa @99 °C (100 psi @210 °F) (supplied with unit)
6 0.551 MPa (80 psi) relief valve (optional, supplied by installer)
7 Expansion tank (optional, supplied by installer)
8 Straight-through shut-off valve (supplied by installer)
9 Check valve (optional, supplied by installer)
10 0.48 MPa (70 psi) pressure reduction valve (optional, supplied by installer)
11 Cold water connection (with Union adaptor to 3/4")
12 Condensate drain (elbow supplied with unit)
13 Drain valve (supplied by installer)
14 Drain pan (supplied by installer)
15 Condensate spillover

ENGLISH
WWW.STIEBEL-ELTRON-USA.COM ACCELERA® 300 HEAT PUMP WATER HEATER | 5
CONTENTS | OPERATION
GENERAL INFORMATION____________________________________________2
QUICK START-UP GUIDE ____________________________________________2
OPERATION __________________________________________________________5
1. Overview ____________________________________________________5
2. General information ________________________________________5
2.1. Key to symbols ___________________________________________________ 5
3. Safety ________________________________________________________9
3.1. General safety instructions ____________________________________ 9
3.2. Intended use______________________________________________________ 9
3.3. Incorrect use______________________________________________________ 9
3.4. Personnel qualification_________________________________________ 9
3.5. Safety equipment ________________________________________________ 9
3.6. Particular risks ___________________________________________________ 9
4. Water heater description_________________________________ 10
4.1. Function description ___________________________________________ 10
5. Operation__________________________________________________ 10
5.1. Initial start-up by a licensed installer ______________________ 10
5.2. Starting and stopping__________________________________________ 10
5.3. Emergency stop _________________________________________________ 10
6. Maintenance and care ____________________________________ 10
6.1. Descaling _________________________________________________________ 11
7. What to do if ... ___________________________________________ 11
7.1. ... the water heater does not deliver hot water___________ 11
7.2. ... the safety valve of the cold water supply line is
dripping __________________________________________________________ 11
7.3. ... the condensate drain drips________________________________11
7.4. ... the power consumption is too high______________________ 11
7.5. ... the room temperature drops excessively_______________ 11
7.6. ... other faults occur____________________________________________ 11
8. Safety ______________________________________________________ 11
8.1. General safety instructions ___________________________________ 11
8.2. Incorrect use_____________________________________________________12
8.3. Qualification _____________________________________________________ 12
8.4. Instructions, standards and regulations ___________________ 12
8.5. Water installation_______________________________________________12
8.6. Electrical installation___________________________________________12
9. Water heater description_________________________________ 12
9.1. Standard delivery_______________________________________________13
9.2. Special accessories_____________________________________________13
10. Installation ________________________________________________ 13
10.1. Installation location ____________________________________________ 13
10.2. Shipping inspection ____________________________________________ 14
10.3. Handling__________________________________________________________ 14
10.4. Storage____________________________________________________________ 14
10.5. Positioning the water heater _________________________________ 14
10.6. Unpacking the water heater__________________________________ 14
10.7. Water connection _______________________________________________ 17
10.8. Power supply: 240V / 15A double pole circuit breaker__ 17
11. Initial start-up ____________________________________________ 19
11.1. Initial start-up ___________________________________________________ 19
11.2. Shutting down___________________________________________________ 19
11.3. Restarting ________________________________________________________ 19
12. Settings ____________________________________________________ 19
12.1. Adjusting the water temperature____________________________ 19
13. Water heater hand over __________________________________ 19
14. Troubleshooting___________________________________________ 19
14.1. Safety equipment of the water heater______________________ 19
14.2. Troubleshooting_________________________________________________20
15. Maintenance and cleaning _______________________________ 20
15.1. Cleaning the evaporator ______________________________________20
15.2. Draining the tank _______________________________________________ 20
15.3. Sacrificial anode rod ___________________________________________ 20
15.4. Descaling _________________________________________________________20
15.5. Checking valves _________________________________________________ 21
16. Specification_______________________________________________ 21
16.1. Connection and dimensions __________________________________ 21
16.2. Wiring diagram _________________________________________________ 22
16.3. Refrigerant diagram ___________________________________________ 23
16.4. Technical Data ___________________________________________________ 24
WARRANTY ________________________________________________________ 27
ENVIRONMENT AND RECYCLING _________________________________ 27
ENGLISH

OPERATION
OvERvIEW
6 | ACCELERA® 300 HEAT PUMP WATER HEATER WWW.STIEBEL-ELTRON-USA.COM
1. Overview
Front of the water heater
7
6
2
5
4
3
1
26_03_01_1338
44
8
1 Water heater cover
2 Opening for PT valve
3 Condensate drain
4 Leveling feet
5 Cold water inlet
6 Hot water outlet
7 Air entry
8 Condensate spillover
An 80 gallon water tank is part of the water heater. Foam insulation
is applied to the outside of the water tank to prevent heat losses.
The water heater casing is made from powder-coated sheet steel.
The internally enameled water tank is supported by three height-
adjustable anti-vibration leveling feet.
Back of the water heater
910
26_03_01_1337
9 Air discharge
10 Entry for the power cable
11 Information labels, serial no.:
11

OPERATION
GENERAL INFORMATION
ENGLISH
WWW.STIEBEL-ELTRON-USA.COM ACCELERA® 300 HEAT PUMP WATER HEATER | 7
2. General information
The chapter Operation is intended for users and licensed installers.
The chapter Installation is intended for licensed installers only.
2.1 Key to symbols
2.1.1 Layout of safety information
DANGER Electric shock Before any work on the water heater,
disconnect all poles from the power
supply.
13
4
2
1 Symbol (see chapter "Symbols")
2 Keyword (see chapter "Keywords")
3 Designations (see chapter "Symbols")
4 Information text
2.1.2 Symbols
Symbol Description
Injury
Electrocution
Burns or scalding
!Other situations
Fire
Explosion
Water heater disposal
2.1.3 Keywords
KEYWORD
DANGER The keyword DANGER indicates information
that must be observed, otherwise serious injury
or death
will result.
WARNING The keyword WARNING indicates information
that must be observed, otherwise serious injury
or death
may result.
CAUTION The keyword CAUTION indicates information
that must be observed, otherwise relatively
serious or light injuries may result.
2.1.4 Symbols in this documentation
Read the text next to this symbol carefully.
»Passages with the symbol "»" indicate that you have to do
something. The action you need to take is described step by
step.
- Passages with this symbol "–" indicate lists.
2.1.5 Units of measure in this documentation
The dimensions in this document are given in
millimeters (inches).
2.1.6 Information on the packaging
Information label "Top heavy"
! !
Hoher Schwerpunkt
High balance point
Hoog zwaartepunt
Centre de gravité en partie haute
Hög tyngdpunkt
Alto centro di graviá
Alto centro de gravedad
Achtung - Attention - Attentie - Attention
Uppmärksamhet - Oppmerksomhet
Attenzione - Atención
+
264623-33631
Information label "Vertical transport"
!CHTUNG!TTENTION
4RANSPORTUND!UFSTELLU NG
$AMITDAS'ERËTVOR"ESCHËDIGUNGENGESCHàTZTISTSOLLTEESBISANDEN-ONTAGEORTINDER6ERPACKUNGTRANSPORTIERTWERDEN
'ERËTSENKRECHTTRANSPORTIEREN"EI
BEENGTEN4RANSPORTBEDINGUNGENKANNDAS'ERËTAUCHKURZZEITIGGENEIGTWERDEN"EACHTEN3IEDIEWEITEREN(INWEISEZUM!UFSTELLENUND!USRICHTENDES'ERË

TESINDERBEILIEGENDEN'EBRAUCHSUND-ONTAGEANWEISUNGUM3CHËDENAM'ERËTZUVERMEIDEN
4RANSPORTANDINS TALLATION
4O PR OT EC TTHEEQUIPME NT A GA IN ST DAMAGE ITMUSTBETRANSP OR TEDINSIDEITS DE DI CA TE D PACKAGING U NT IL T HE INSTALLATIONF AC IL IT YISARRIVED
4RANSPORTTHEEQU IPMENT
UPRIGHT
7HERESPACEISRESTRICTEDYOUMAYALSOMOVEBRIEFLYTHEEQUIPMENTTIPPEDBACKWARDSATANANGLE/BSERVETHENOTESONINSTALLATIONANDFITTINGOFTHE
EQUIPMENTWHICHCANBEFOUNDINTHEENCLOSEDINSTALLATIONANDOPERATINGINSTRUCTIONSTOAVOIDPOSSIBLEDAMAGETOTHEEQUIPMENT

'ERËTNURSENKRECHTODERGGFGENEIGTTRANSPORTIEREN
-OVETHISMACHINEONLYINAVERTICALPOSITIONORIFREQUIREDSLIGHTLYINCLINEDWITHTHECONTROLFACIAPOINTUP
280306-34594

OPERATION
GENERAL INFORMATION
8 | ACCELERA® 300 HEAT PUMP WATER HEATER WWW.STIEBEL-ELTRON-USA.COM
2.1.7 Information on the water heater
For reason
of
corrosion
protection
use flat
gasket ring
28030 5 - 35826
BURN
HOT
CAUTION
DANGER
!
284760-34684
WW Austritt
DHW outlet
280304-34
6845
Warning
A temperature and pressure relief valve
must be fitted to the clearly marked
socket. The valve drain outlet pipe
must not be sealed or blocked, and the
valve easy gear is to be operated
at least once every six month.
280558-34684
Drain
28030
2-3481284594
KW Eintritt
CW Inlet
280303-346845
For reason
of
corrosion
protection
use flat
gasket ring
28030 5 - 35826
Drain
28030
2-3481284594
Relief valve
Plumber:
The relief valve installation
must be fitted to this socket.
280557-35826
2
4
6
1
7
3
5
26_03_01_1355
3
1
1 Information label "Condensate drain"
2 Information label "Risk of scalding"
3 Information label "Connection"
4 Information label "Hot water outlet"
5 Information label "Relief valve"
6 Information label "Relief valve installation location"
7 Information label "Cold water inlet"
Power supply
Disconnect power supply
before opening the cover.
280556-34
68425
Type:Accelera300/WHP300
Heatpump:
PN(Air42°/Water 60°):
IN(Air42°/Water 60°):
TypeofRefrigerant:
Refrigerantcharge:
Max.operatingpressure:
Lockrotorcurrent:
MCA:
Ratedloadcompressor:
Motorfan:
Order-No.:222423
DHW-cylinder:
Additionalheatingelement:
Max.operatingpressure:
Max.operatingtemperature:
Typeofcylindermaterial:
Cylindercapacity:
Testpressurestoragetank:
Observetheinstallationmanual! Testedforleaks!
MadeinGermany
No.: 8443 / 005204
Voltage/Frequency:
Breaker:
P (ratedpowerinput):
Maximumallowableratings
Protectionclass:
Nmax
Singlephase220-240V, 50/60 Hz
15amp.
2200W,9.17A
IP24
*222423844300520415*
1690W
87psi/600kPa
168.8°F/76°C
Glasslinedsteel
80.044Gal/303l
130.5psi/900 kPa
0.5kW
2.17A
R134A
1.9842Lb./900g
348.1psi/2.4MPa
13.4A
10.4A
2.3A
38W
STIEBELELTRONINC
17WestStreet
WestHatfield,MA01088
USA
282209-35237
DE:EnthältvomKyoto - Protokoll erfasste fluorierte Treibhausgase - hermetisch geschlossenes System.
GB:Containsfluorinatedgreenhouse gases covered by the Kyoto Protocol - hermetica llysealed.
FR:Comprendlesgaz à effet de serrefluorés enregistrés par le protocole de Kyoto - systè mes hermétiquement scellés.
NL:Bevatgefluoreerdebroeikasgassen die onder het Kyoto-protocol vallen - hermetisch gesloten syste em.
SE:InnehålleravKyoto - protokollet registrerade flourerande växthusgaser i hermetiskt förslutna sys tem.
PL:Zawierafluorowanegazy cieplarniane ujęte w Protokole z Kioto - hermetycznie zamknięt y układ.
CZ:Obsahujefluorizovanéskleníkové plyny, obsažené v Kjótském protokolu - hermeticky uz avřenýsystém.
ES:Sistemaherméticamentecerrado que contiene gases de efecto invernadero mencionados en e l protocolo de Kioto.
DK:IndeholderfraKyoto-protokollenregistrerede, fluorerede drivhusgasser – hermetisk lukket system.
NO:Inneholderfluorertedrivhusgassersom omfattes av Kyotoprotokollen - her metisklukketsystem.
FI:SisältääKiotonsopimuksen alaisia fluorattuja kasvihuonekaasuja - ilmatiiviisti suljettu järjestelmä. 284436-34741
BG:Съдържа посочените в Протокола от Киото флуорирани парникови газове - херметически затворена система.
HU:AKiotóiJegyzıkönyv szerinti fluortartalmú üvegházhatású gázokat tartalmaz - hermetikusan zárt rendszer.
IT:Contienegasfluorurati ad effetto serra disciplinati dal protocollo di Kyoto- Impianto ermeticamente chius.
RO:Conțineunsistem închis ermetic contra emisiei de gaze fluorine monitorizat de protocolul Kyoto.
8
11
26_03_01_1356
10
9
8 Information label "Power connection"
9 Type plate
10 Information label "Fluorated gases"
11 Information label "Energy efficiency"
1 Information label "Condensate drain"
This label shows you the position where the water heater drain
is located.
Drain
280302-3481284594
280302-34812.
2 Information label "Risk of scalding"
BURN
HOT
CAUTION
DANGER
!
284760-34684
284760-34684.
3 Information label "Connection"
For reason
of
corrosion
protection
use flat
gasket ring
28030 5 - 35826
280305-35826

OPERATION
GENERAL INFORMATION
ENGLISH
WWW.STIEBEL-ELTRON-USA.COM ACCELERA® 300 HEAT PUMP WATER HEATER | 9
4 Information label "Hot water outlet"
WW Austritt
D
HW outlet
280304-346845
280304-34684
5 Information label "Relief valve"
Warning
A
temperature and pressure relief valve
m
ust be fitted to the clearly marked
s
ocket. The valve drain outlet pipe
m
ust not be sealed or blocked, and the
v
alve easy gear is to be operated
a
t least once every six month.
280558-34684
280558-34684
6 Information label "Relief valve installation location"
R
elief valve
P
lumber:
T
he relief valve installation
m
ust be fitted to this socket.
280557-35826
280557-35826
7 Information label "Cold water inlet"
K
W Eintritt
C
W Inlet
280303-346845
280303-34684
8 Information label "Power connection"
Power supply
D
isconnect power supply
b
efore opening the cover.
280556-3468425
280556-34684
9 Type plate
Type: Accelera 300/WHP 300
Heat pump:
PN (Air 42°/ Water 60°):
IN (Air 42°/ Water 60°):
Type of Refrigerant:
Refrigerant charge:
Max. operating pressure:
Lock rotor current:
MCA:
Rated load compressor:
Motor fan:
Order-No.: 222423
DHW-cylinder:
Additional heating element:
Max. operating pressure:
Max. operating temperature:
Type of cylinder material:
Cylinder capacity:
Test pressure storage tank:
Observe the installation manual! Tested for leaks!
Made in Germany
No.: xxxx / xxxxxx
Voltage / Frequency:
Breaker:
P(rated power input):
Limits for heat pump operation:
Maximum allowable ratings
Protection class:
Nmax
Single phase 220-240 V, 50/60 Hz
15 amp.
6 °C / +42 °C
2200 W, 9.17 A
IP 24
*222423xxxxxxxxxxxx*
1690 W
87 psi /600 kPa
168.8 °F / 76 °C
Glass lined steel
80.044 Gal /303 l
130.5 psi / 900 kPa
0.5 kW
2.17 A
R134a
1.9842 Lb. /900 g
348.1 psi /2.4 MPa
13.4 A
10.4 A
2.3 A
38 W
STIEBEL ELTRON INC
17 West Street
West Hatfield, MA 01088
USA
282209-35793
26_03_01_1357
10 Information label "Fluorated gases"
DE: Enthält vom Kyoto - Protokoll erfasste fluorierte Treibhausgase - hermetisch geschlossenes System.
GB: Contains fluorinated greenhouse gases covered by the Kyoto Protocol - hermetically sealed.
FR: Comprend les gaz à effet de serrefluorés enregistrés par le protocole de Kyoto - systèmes hermétiquement scellés.
NL: Bevat gefluoreerde broeikasgassen die onder het Kyoto-protocol vallen - hermetisch gesloten systeem.
SE: Innehåller av Kyoto - protokollet registrerade flourerande växthusgaser i hermetiskt förslutna system.
PL: Zawiera fluorowane gazy cieplarniane ujęte w Protokole z Kioto - hermetycznie zamknięty układ.
CZ: Obsahuje fluorizované skleníkové plyny, obsažené v Kjótském protokolu - hermeticky uzavřenýsystém.
ES: Sistema herméticamente cerrado que contiene gases de efecto invernadero mencionados en el protocolo de Kioto.
DK: Indeholderfra Kyoto-protokollen registrerede, fluorerede drivhusgasser – hermetisk lukket system.
NO: Inneholderfluorerte drivhusgasser som omfattes av Kyotoprotokollen - hermetisk lukket system.
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26_03_01_1386
11 Information label "Energy efficiency"
282980-36142
Maintain the legibility of all information labels. Illegible safety information and symbols can result in
dangerous situations.

OPERATION
SAFETY
10 | ACCELERA® 300 HEAT PUMP WATER HEATER WWW.STIEBEL-ELTRON-USA.COM
3. Safety
This chapter provides an overview of all important actions required
for a safe and trouble-free operation.
3.1 General safety instructions
Operate the water heater only when fully installed and with all
safety equipment in place.
Unsuitable tools or incorrect handling can result in damage to
the water heater.
DANGER Scalding
The water is heated inside the water tank to60°C
(140 °F). There is a risk of scalding at outlet
temperatures above 43 °C (109°F).
»Ensure that outflowing water does not directly
contact your body.
CAUTION Injury
Where children or persons with limited physical,
sensory or mental capabilities are allowed to control
this water heater, ensure that this will only happen
under supervision or after appropriate instruction by
a person responsible for their safety.
»Children should be supervised to ensure that they
never play with the water heater.
Never place any objects on top of the water heater.
Objects placed on top of the water heater can increase
the noise level developed by the water heater through
vibrations.
Never cover the water heater.
The water heater draws in air. Covering the inlet slots
reduces the air intake. This reduces the efficiency of
the water heater and can even lead to one of the safety
devices interrupting the water heater operation.
3.2 Intended use
This water heater produces hot water automatically.
The water heater can be installed and operated in the open as well
as in enclosed spaces. The temperature of the air that is drawn in
during operation must not fall below 6°C (43 °F).
Any other use beyond that described shall be deemed inappropriate.
Observation of these instructions is also part of the correct use of
this water heater.
Any changes or modifications to this water heater void all warranty
rights.
3.3 Incorrect use
The following are not permitted:
- Do not heat anything other than potable water
- Do not use unqualified (unlicensed) personnel for installation
- Do not use in an environment with greasy extract air
This water heater must not be operated at ambient
temperatures in excess of 42°C (107°F) or below 6 °C
(43°F).
If outside air is directly drawn in ensure, that the
water heater is isolated from its power supply when
the air temperature falls below 6°C (43 °F).
3.4 Personnel qualification
DANGER Injury
Incorrect handling can result in severe injuries and
material losses. Inadequately qualified personnel
cannot assess the potential risks.
Have the installation, initial start-up, maintenance
and repair steps carried out only by the qualified
individuals specified in the respective chapters.
In the remainder of this manual, such qualified individuals will be
described as the "licensed installer."
3.5 Safety equipment
Wear safety shoes/boots during the transportation and positioning
of the water heater. Dry, this water heater weighs 130kg (290 lb).
Safety shoes/boots reduce the risk of injury.
3.6 Particular risks
3.6.1 Electric current
WARNING Electric shock
Contacting parts that carry live power is associated
with a direct risk to life. Damaging the insulation or
individual components can result in a risk to life.
»If you detect damaged insulation, immediately
switch off the power supply and arrange for the
necessary repair.
»Have all electrical work carried out by a qualified
electrician.
3.6.2 Hot surfaces
CAUTION Burning
Contact with hot components can result in burning.
»When working near hot components, wear
protective clothing and gloves.
»The pipework connected to the hot water outlet of
the water heater can reach temperatures in excess
of 60 °C (140°F).
3.6.3 Refrigerant
The water heater is filled with R134A refrigerant at the factory.
WARNING Freezer burn
Should the water heater leak refrigerant, avoid contact
with the refrigerant or breathing in any released
vapors. Immediately vent the room.
In normal water heater operation, the refrigerant is contained in
a sealed circuit.