5.2 -Temperature control
- This heater as a temperature controler to avoid overheating problems, ie, when the outlet
water temperature reaches high values, the heater is automatically switched off andthere is no
heating water.
- The controlleris reset atomatically .
- Toplace the product backin operation,close the hotwater faucet/ tap andthen re-open it .
- If the problem continues, do not use it , turn off the product close the valve and get in
contact an authorizedtechnical assitance.
6 -Maintenance
- -IMPORTANT:
Whenever you make any maintenance at your heater, the
removal of the batteries from the compartment is recommen-
ded toavoid unexpectedproduct activation .
- For a proper operation and extended life of the product,
proceded periodic reviews (between 1 and 2 years) at the
product, throughthe authorized technical assitance.
To clean the externalcover use a dampcloth and mild soap, do
not use chemical products (gasoline, alchool, thinners, etc.)
powders or abrasive products. - When replacing parts, always
use onlyoriginal Lorenzettispareparts.
Clean the filter at water inlet of the product every 6 months or
shorter periods,if necessary proceedas follows:
1.- Close the coldwater valveof the product(Pic 1)
2.- Open a hot water tap/faucet to drainthe water stored inside
the product and /o pipe.
3.- Removethe water inlet connection ofthe product. Taking care toplace a bucketjust below
the product in order to receive the waste heater that eventually may still be inside product
and/or pipeline,avoiding wettingthe areaaround the product.
4.- With the help of an adequated too l( screwdriver, for axample), remove the filter screen
metal placed insided uctinlet water oft heproduct (Pic 7)
5.- Cleanthe filter,eliminating completelyeliminate onthe surface anydirt and debris.
6.- Replace thefilter on your site connectionand waterinlet product, certifyif the connection
is wellfastened toprevent waterleakage.
07
7.- Close the hot water faucet previously opened and open the cold water valve of the pro-
duct*(pic1).
08
* If the pressurizedhydraulic networks,precaution air removal of the pipethen after cleaning
the filter.If indoubt, contacta especializedperson
6.1 - Dangerof Freezing
If underthe local weatherwhere the productis installed thereis a possibilitythat the tempera-
ture reaches valuesbelow zero degrees centrigrade (OºC), thewater fromthe product should
be drainedto preventeirreversible damageat theproduct.
Orientative
drawing
inlet
filter
cold water
inlet
7
6.2 -Removing thefront coverof theheater
To drain the water, close the cold
water valve supply and completely
drain the water from the product,
removing the relief and drain valve
(Pic 8) and also the connection of
output hotwater ofthe heater.
- Take care to place a bucket just
below the heater to collect the
water drainedfrom theproduct and
pipe, avoiding wetting the region
around theheater.
- After draining, replace relief and
drain valve and the output connec-
tion of hot water, making sure to
fasten p roperly to avoid water
leakage.
To Remove thr front cover of the
product, proceedas follows-(Pic. 9):
1. Remove the buttons “A”, “B” and
“C”, pulling themforward
2. Unscrew the two screws Philipsat
the bottonside ofthe frontcover
3. Pull thecover forward and to then
up.
Obs.:
To replace the front cover
upside proceedto disasembling.
Procedure that should be
done bytechnician
Button “C”
Socket
Identification
product stickers
screws
Button“A”
Button “B”
gas inlet
cold water
inlet
8
hot water
inlet
Aliviate drain valve
Orientative drawing
ON
OFF
VERÃO
INVERNO
www.lorenzetti.com.br
(5511) 2065 7396/7
export@lorenzetti.com.br
Lorenzetti S.A.Indústrias BrasileirasEletrometalúrgicas
Av. Presidente Wilson, 1230 - CEP 03107-901
Mooca - São Paulo - SP - Brasil
C.N.P.J. 61.413.282/0001-43
09
9
10
This produ ct should be connecte d toa water dist ribut ion mains compatible to its capacity, as
speci fied at item 8 (Technical Char acte risti cs). It is not recomme nded to use the produc t for
other purpo ses than the abov e.
- An installation that does not meet required standards may cause damages. Lorenzetti is
not responsible for any damages and losses caused by inadequate installation.
- Do not touch the outlet area of the exhaust of combustion gases (chimney and nearby
areas) due to the high temperatures reached under normal conditions of usage that can
cause burns.
- Do not expose the product to cooking steam.
- Do not wash the product, install it or exposed to the weather without adequate protection
against dust, water or other incidence of excess liquid and air flow (windy place).
- Do not place anything onto the product.
- When opening the package, make sure about the perfect state of the product.
- In case of doubt, do not use the product and contact the authorized technical assistance.
- Do not throw to the environment any packaging, plastic bags, styrofoam etc.. and not let
the children reach them as they are potential sources of accidents.
After i nstalling th e product to rem ove the label on t he front face of t he product (Co npet
Tag/ Inmetro).
- We do not advise the operation of this equipment by children, the elderly and phisical
impaired without any supervision.
If ga s can be s melt where the produ ct is ins talled, do no acti vate circui t breakers, phone or any
other euipme nttha tcan spark .
Have wind ows and doors op en immediatel y to renew local ai r. Close th e gas central va lve (in the
counter ) or in the gas receptable and request the presence of your dist ributer. In cas e nobody is
presen tat hom e,cl ose the central gas valve. Acoord ing tot echnic standar dsi nfor ce,t his product
can be on ly installe d and work in an d terminals t ype T or «Chines e Hat» only in p laces protec ted
agains t the wind tha t come s from the outs ide an d ins ide of the envi ronment. Pieces for this
produc t can be repla ced only by yo ur distribu tor.Th is equipmen t is destine d for domesti cal use
(Hygie nization).
9 - Special care
8-Technical Characteristics
11
*Subjetc tochangewithoutnotice
**Values minimum flow and pressuredepend on the position
thatfits the "B" (fig.6).Values
***Minimumoperatingpressure measured according to
NBR8130 noload loss (thisvalue may vary according
to the hydraulic system ofresidence.)
GN
G.L.P.
2,26
------ 1,74
----
3,02
------ 2,34
------
TecnicalCharacteristics*
Power consuptionin normal conditions
(15º Ce 101,33 kPa(760 mmHg))
(kcal/min)
(kW)
Efficiency about P.C.S.
(%)
(s)
Timeof ignitionof safety valve tostart
(mca)
(m³/h)
Water maximum pressure
Gas consuptionat the standardconditions
15°C e101,33 kPa(760 mmHg)
(kg/h)
Minimumconditions fora ignition **
26,0
84
1,0
GN GLP
2,5 a 7,5
87
342,57
24,6
GN GLP
Heaterconnections
(pol.)
Inletgas pressure of the product
(mmca)
Batteries forthe ignition ( D type)
(V)
Dimensions
Height(A)
Diameter of dechimney ( C)
Grosswe Weight
NetWeight
(mm)
(mm)
(kg)
(kg)
200 280
1,5
½” BSP
610
125
12,50
14,20
479
33,4
83,0
2,5 a 7,0
83,0
461
32,2
200 280
610
125
12,5
14,20
Flowcapacityby temperaturaelevation20ºC
standard conditions(15°C e101,33 kPa(760 mmHg)
(l/min)flow
flow
pressure
(l/min)
(mca)
1,5 a 3,5
1,0 a 2,0
80
hidraulic
gás
LZ - 1600 N
LZ - 2000
15,5
15,0 20,0 19,0
***
Ø C
D
B
E
inverno
verão
gás
mín.
máx.
F
A
água
mín.máx.
Width(D)
Depth(E)
(mm)
(mm)
350 350
190 190
342,57
02 03
3.2- Water connection
hose hot
water
cold water
valve
gas valve
outlet gases
clamp
1
Note: The tube, clamp, register,
water and gases hose does nor supplier
** These products allowthe gas exchange ratefor NG for LPG and LPG for NG.
VERÃO INVERNO
3.3- Combustion gasexhaustion
Forcombustion gas exhaustionproceed withthe installation following thelocal lowsprocedures.
The gasheater are providedwith connection tothe exhaust gasduct and must havea direct connecti-
on tothe individualor collective chimney(pic. 3)
The interconnection of the product to the external environment need to be accomplished through
individual or collective chimney, a pipeline made by appropirate materials, and resistant against
weather , normal mechanical stress, heat and other environment conditions where the product is
installed.
The exhaustion gas duct should not have its diameter reduced to lower measures than specified at
item 8of thismanual (chimney ofthe diameter)
04 05
Forthe ventilation atthe installation point,check yourlocal standardsrequeriments.
It is forbidden by its danger to operation of vacuum cleaners, and fireplaces similiar in the
same placewhere the products installed.
The environment wherethe product isinstalled must be provided regular inputof oxygen to
ventlitation andshall have:
1) Permanents openingsat the wallto communicating with the outside.
2.Ventilation duct (individualor collective) incase wherethere is sucha need.
3.4- Environmentventilation
Model forthe installationof theproduc tin aadequate environment:
Atention: For your safety,in case the product is being installed to replace an exis-
ting one in the interior of the bathroom or kitchen, check if the environment is
compliance with the local standards concerning to ventilation, gas exhaustion, as
wellas special proceduresdescribed initem 9 ofthis manual.
4- Batteriesinstallation
The two batteries of 1.5V (batteries size big typ e
D ), must be pos itioned in t he compartment
located in the button part of the produc t (fig. 5).
The ba tteries are not provied with th e product.
Observ the b atteries polari ty. Use a al kaline
batteries. In case the batteries areno being used,
at longper iodof time, removeth em.
Batteries should be replaced periodically to
avoid is no ignition problems due to l ack of
changing device (seeitem 7)
06
5- Operation
The gas heaters area ppliances suppli esthe insta nthot water.
Built- ina nel ectronic circu itp owered with 3 V(2 bat teries AA size - D type ), which ig nites auto-
matica llyth eburn eralw aysthe fauce t/tap /valve hotwa ter is open.
The hot wa ter s upply should b e mad e through tap / record specific fo r this purpo se.
Opening the t ap, the main burner of th e heater turns on and heats the w ater that runs
throug ha coil.
The water gets heat throug h paassing inside a coil. The li ghtining control and flam e
oprese nce is made by anelectron icsystem
5.1 -Using yourequipment
The water temperature controlcan bedone at threedifferent ways.
Turningit clockwise, youget moregas.Turning itcounter clockwise, youget less
gas, consequently, higher or lowertemperature ofhot water
For comfortand adjusting option, this buttonallows more precise controlof
hot water temperature . At the winter position is higher heating capacity and at summer
position lower heating capacity. Using this control at the summer position is suitable for
warmer days
- Turning it counterclockwise, you get increased water supply, turning
clockwise is obtained consequently reduced water supply, higher or lower temperature hot
water.
Youcan control thetemperature (high water flow,means lower temperature orvice versa).
In the caseof mixer usage ,open to hotwater andthen gradually open thecold water faucet ,
until reachingthe desired water temperature. Inorder to save gas, justuse the heaterwith gas
controlbuttonat theintermidiate position or minimum(depending onthe weather season).
Throughthe gas controlbuttons
Button C
By using the mixer or control the flow of hot water at the point of use. (through the
main register)
1) .
Button A
Button B
2)
-
-
3)
With thebutton iatOFF position, theheater keeps
the burners disconnected and does nor promote
water heating. To re-heat the water, just set the
button at ON position.
Through the ON/OFF button , located on
the bottonposition at layer ofthe heater.
- For longperiods withoutusage,
close thegas log.
A- Button gasflow control
B- Button winter/summer
C- Button water flowcontrol
Fleme
Visor
Controls
Buttons
ON/OFF
Button
inverno
verão
gás
mín.
máx.
Liga
Desl.
água
mín.
máx.
inverno
verão
GAS
mín.
máx.
WATER
mín.
máx.
2
Gás
cold
water
hot
water
VERÃO INVERNO
3
Duct
air inlet
deflector
VERÃO
INVERNO
1- Presentation
2- Atention
INSTRUCTION AND
INSTALLATION MANUAL
INSTANTANEOUS
GAS WATER HEATER
LZ - 1600 N
LZ - 2000
- You have a dquired G as water H eater, develop ed to prov ide hot wa ter withou t electri cal power
consup tion. Prac tival and economica l, with au tomatic ac tivation a nd pilot f lame, to at tend your
needs with greater safety and comfort .
- Pleas e red careful ly the insta llation ins tructions a nd operatio n before usin g de
produc t. Keep th is manual for future references . The instal lation of t his produc t
should be made by q ualified personn el for your entire safet y and produc t life
increa sing.L
-T hehe aters arema nufacture dto operate by only one type of gasN G(na tural gas)
or LPG( lique fiedp etroleum gas)
- Its packagi ngo nth ele fts side of the layer(fig. 9) shows the ident ification of what
type of gasm ustbe used. If inc aseany doubt consu ltyour local deale r.
3.1- GasConnection
-Th einst allation of thisp roduct must cumply thes tandard ofyo urcou ntry.
- Fo r speci als app lications (centra l heati nf swim ming po ols,etc) consulti ng a
qualif iedte chnician.
-Th isman ualrec ommend thei nstallatio nby aq ualified technici an.
- The self-ins tallation or by unqu alified person s, made without prop er care, can
offfer risk scompo rmising prouduc tper formance.
- Caution: Do not inst all the producto expos edt oth ewea ther withou tad equa-
te protectio nagai nstdu st,im pacto fwate ror other liquids.
3- Instalation
- Verify if the typ eo fg as supplie di sco mpatib lew ith the produ ct adquire d. Before to
the insta llatio nof the produc tpl ease check the follow ings preoced ures.
- Certif icate that nor esidued and poss ibles losse sin the gas pipe instal lation.
- Ver ifiy i f the gas pressu re sup ply is in accorda nce wi th the char acteri stics of th e
prod uct (Item 8 Techni cal chara cterist ics). - Conn ecting th ep roduct to th e gas pipe,
inst alling befor ethe prod uct aval vefo rblo cking openi ngt hega ssup ply (Pic 1)
-The gas heaters that operate with LPG gas, supply by
cylinders equipedwith blocking andflow regulation deviced
must be interconnected to ensure safety conditions to the
people andthe placewhere itis installed.
-The gassupply must be size acoording the flow requiredby
the product and be provided with all safety and controls
deviced needed.
- If the product is not used for a long pereiod of time, you
should shutoff themain valve forsafety reasons.
- Do not use gas pipes fro grounding wire the electrical
applianced.
-Check using some soap/detergents foamat all connections
to ensurethere arenot leakage.
- If necessary change the gas type supply, please request a
technician for properconversion changing be performedon
the rightway.
Provide theinstallation of ablock ing valve in the waterinlet point. Beforestarting the water connecti-
on ofthe device,open the blockingvalve and letrun thewater to eliminateany airand any debrisfrom
the pipe.(Pic.01)
Looking at theproduct, the cold water inlet is the right side, the hot wateroutlet is at thecenter side
and the gas inlet at the left side (Pic. 2). Be guided by markings on the bottom of
the product
Ensure that your intallations of hydraulic pipes are not being used as grounding
wire for any of your electrical devices or telephone, due to they are not recom-
mended for thispurposes. Under these conditions severe damagesare subject to
happen atthe pipesand the product.
Check ifall faucetsand valves(for bathing ) closed
Confirm that the pressure of incoming water is under recommendation of the
product (item8 -TechnicalSpecifications). -
Use aproper treatedwater
The direct use of water from the mains depends on its constancy supply and adequate pressure
supplied. (seespecifications table, item 8).The u
At the output for showers and mixer taps , install connections type "Y ". This ensures a good gperfor-
mance ofthe productand avoidseventual cuts ofin the water supply.
If itis necessary to pressurizethe network, perform itat two lines (hot and cold)in order tohave a well
balance atwater mixture.
For mixerfaucet with monocontrol, make surethe pressures onthe network (hotand cold water)are
well balanced
se outof these conditions can resultsto damage
of theproduct.
In case of the use of water from an artesian well, a craft well please make the proper phisi-
cal/chemical analisys of the waterand only used if it is under the correct standards of supply
network orproperly weeltreated forconsumption.
5
Lig. Desl.
Figura orientativa
SERVICEAREA
INLETAIR WITH
DEFLECTOR
GASHEATER
4
UPPERVENTILATION
LOWER
VENTILATION
GASHEATER
inverno
verão
águagás
mín. máx.
ºC
The combustion chamber
blades get dirty in a
short period of time
Gas smells
Smell of burnt gas
Ignition connects but
water does not heat
The heater disconnects
when the cold water is open.
The heater disconnects
during the use
Reduction in the
volumen of hot water
The magnetic sensor is
locking the flow
Combustion output in poor
or dusty environment
Yellow flame
Excessive consumption of gas
Leakage at pipes net.
Evaporation of the resin
duct the chimney
Combustion Gas circuit obstructed
Lack of power
no gas
No power at the batteries
Dirt in the filter at the inlet water
Mixer "T" and imbalance
pressure of the network
Check the efficiency of the chimney and
duct output of the combustion gases.
Check the efficiency of the
chimney output of combustion gases
*
Verify the tube (test with soap foam)
Do not operate electrical switches or any
object that causes spark
Check the type of gas and clean the burner
Check and regulate it
Reducing the power of the
heater, open the windows*
Regulate the buttons A and B *
verify the supply *
Replace de batteries *
Close the main faucet personal
showers after the use*
Reduce the heater power
and open less cold water *
7-Eventualproblemsandrespectivesolutions.
Attention: The following checklist should be performed
by a qualified person. In case of doubts, please contact
distributorin yourcountry .
* This operations can be performed by the user
Thepilot is connected
afterthe wateris turned off
Main faucet of the
shower heads open.
Cleaning the filter (verify item 6)*
Replace the flow sensor
Thepilot does not
connecteven if
thereare aparks
Control Device damaged
(gas valve)
no gas supply
Gas supply pressure inadequate
Air in the piping gas
Open the valve checking for lack of gas *
Provide adequate gas pressure
Make the elimination of air
Solenoide stuck
Battery with low charge Replace the batteries *
unlock solenoid
Thereis no spark
Batteries expired or bad contact
Ignition cable is loosen
Electric Circuit is damaged
Insufficient water pressure
Electrode damaged
Replace or adjust contacts*
Connect the wires
Replace
Check hydraulic installation to pressure guarantee *
Replace
PROBLEM
Posible Cause
Solution
Magnetic sensor damaged
Switch ON/ OFF an the OFF position
connect the switch at ON
Replace
Replace
Need help?
General
