ROC Crown Gold Series User manual

USER’S GUIDE
Condensing Gas Wall-hung Boilers
Crown Gold Series

 The user’s guide is very important for the product, the user’s guide must be
kept in user.There are very important instructions for operation and maintenance.
 Installation and maintenance must be performed by qualified professional
person according to the current rules and instructions of manufacturer.
 Manufacturer will not take any responsibility for those person harm and
property damage causing by incorrect installation. Gas boiler only use for supplying
heating and hot water, can not change to other use.
!"#$%$&'
Please follow the instruction of user’s guide to operate the machine.Manufacturer
will not take any responsibility for those person harm and property damage causing
by incorrect operation.
&($(#")*$+,%-(

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4 Feature of product
6 Don’t worry! We have safe device as follows
7 Items for safety
9 Function and use for main control panel
12 First operation
14 Turn on/off the machine correctly
15 Cleaning and maintenance
16 Make sure the following items before repairing
17 Technical data
18 Appearance and dimension
"//($0%12 Packing List in A Whole Unit

4Leading by professional
34**-567869:6;*<8=>*(?@A=6;8*.B9>8C*
The product uses condensing type heat exchange design,with the unique patent of
circular stainless steel heat exchanger.The tripling circuit coil pipe design absorbs the
ue gas heat adequately,efciency can reach 108%,super low CO and NOX product.
The ue gas temperature can reach 50℃.The condensing result is abvious,green
and environmental.
D4**"75E>*@F9E:7=>8*/!G*;=9*EH5E5H>:56*@56>H5I*>8@A6:JF84
Our key technology is the control system. According to the feedback information from
the temperature and pressure sensor. System can accommodate the gas supply
volume automatically, control heating and domestic hot water temperature, which is
above the temperature you have set so that you can save much energy.
K4**"75E>*CFI>:EI8*9=L8*EH5>8@>:56*78M:@8
Our products have the most safe protection device in the same trade. Adopt
equilibrium force air exhaust system in which the combustion chamber and air
exhaust channels are completely hermetic. It can absorb the fresh air, exhaust
the waste air after burning and eliminate the harm of CO for human’s body. There
are multiple over-heat protection device, protection for ameout, protection for ue
building up, protection for over-pressure, multiple protection for preventing frostbite.
N4**"75E>*9FE8H*CF>8*HF66:6;*O=B
Adopt device for assimilating noise in the burner to assimilate all the noise when
burn. At the meantime, with the low-noise excellent fan, circulation pump and awless
hermetic system,all noise will be the least. You will have a peaceful life space.
feature of product

5
Leading by professional
P4**"75E>*:6>8H6=>:56=I*568QFE*>8@A6:JF8
Adopt international one-up automatic adjustment cushion design to reduce the
probability of malfunction farthest. This design makes a breakthrough on international
heating technology and shows our abundance.
6. Adopt rm and durable components
First-rate key components ensure the products’ quality and usage.Inner material
is machininged by thermalization and antisepsis, and the panel on which we use
special coating with beautiful and elegant colour to improve products’ durability and
safety.
R4**08Q868H;:S8*E8HL5HC=6@8
If the power breaks when the machine is running, this performance will save all
the orders which is saved before the power breaks. it will carry out all the orders
automatically as soon as the power works like before.
T4**G:@H5@5CEF>8H*@A:E*@56>H5I9*=67*EH8M86>9*:6@HF9>=>:56
Heat exchange system with good quality and prevent-incrustation design connected
modern microcomputer chip control temperature for use to delay the incrustation
forming.
U4**(?JF:9:>8*789:;6*=67*9:CEI8*:69>=II=>:56
With exquisite design and compact inner structure, our products are simple to install
and maintain. Coaxial supply and exhaust pipe are manufactured according to the
product’s model so that the installation time will be shortened a lot.
feature of product

6Leading by professional
1. Treble protection for overheating
There are three protection devices, preventing over temperature, preventing heating
water over heat, prevent domestic hot water over heat. If there is overheating these
devices will stop the gas supply and working.
D4**,A8*8=HI:8H*9=L8*:;6:>:56*78M:@8
For the sake of avoiding deflagration, this device only supply minimum gas in the
earlier ignition.
3. Induction system for unusual combustion
When there is unusual combustion, the gas supply will be cut automatically.
N4**08M:@8*L5H*>H=9A*8I:C:6=>:56*
There are different lter screens in the machine, which can extend the product’s life.
5. Device for preventing empty-combustion
This device can induce whether there is water leakage in the heating pipe. If there is
leakage, combustion will be cut automatically. Machine reruns after pouring the water
according to the way to rst operation.
V4**.8ILQ7:=;65989*78M:@8
This device can avoid system safety losing control which is caused by protection
damage and make sure that the system operates in the safe and reliable environment.
7. Device for blaze detection
After operation, this device detects the blaze signal any time and distinguish whether
the present working is normal or not.
8. Safe device for water ow volume*
Detect the water ow volume ( super-low water ow protection) to make sure that the
machine works safely.
U4**+>A8H*9=L8*78M:@8
Safe device for preventing flue building up, safe device for refiring, protection for
overpressure, automatic safe device for air pressure adjustment, safe device for
preventing frostbite, anti-creepage protection, de-energize/water/gas protection and so
on.. please use it without any worry.
don’t worry! we have safe device as follows

7
Leading by professional
1. Make sure the gas type before use
 Must use the certain gas type and pressure of gas
appointed by the label on the machine.
 Forbid to change the gas type willingly. If it is
necessary to change, please contact our after-sales
service department.
D4*G=W8*9FH8*>A8*M5I>=;8*XDKYZ[
 Voltage is 230V/50hz, alternating current.
 After conrm the voltage, connect the plug. (voltage
is required 230V±15%. the subscriber had better
allocate a manostat if pressure is unstable)
K4*\98
 Except heating and D.H.W., gas boiler can’t be
used in other ways.
4. Check the switch for gas before use
 Check the middle switch connected on the gas pipe
to see if there is leakage.
 Ensure whether pressure of gas and ow volume of
gas supply meet requirement of our product.
P4*G=W8*9FH8*>A8*@5668@>:6;*9>=>8*5L*>A8*M=IM8*
L5H*A8=>:6;4
 Make sure whether the valves for connecting the
heater and cooling systems of each room are open or
not.
 Parallel—connect pipe could not be operated less
than one group cooling valve opening.
items for safety
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8Leading by professional
V4* * G=W8* 9FH8* >A8* 9FHH5F67:6;* 86M:H56C86>*
5L*>A8*EH57F@>
 Don’t put the product in the place where will be
affected by weather. (rain and sunshine)
 Get rid of the combustible and explosive material
surrounding the product. It is forbidden to hang
clothes to dry on the ue.
 The temperature of flue and water pipe is very
high. Be careful, please!
R4**G=W8*9FH8*:L*>A8H8*:9*;=9*I8=W=;8*
 It is necessary to use soap water to check the
gas pipe whether there is gas leakage. (when you put
soap water on the gas pipe, if air bubble comes out,
that means there is gas leakage.) Ought to close the
gas immediately and contact local gas supplier.
8. Prevent frostbite in winter
 When heating, heater must be unimpeded.
(including water, electricity, gas) There is a prevent-
frostbite device in the heater, so the heater will work
automatically in low temperature.
 During freezing season or no one at home for a
long period, please exhaust the water in the machine
and in the heating pipe, cut off the gas supply and pull
out the power plug to prevent frostbite.
U4**]8*@=H8LFI*OA86*:>*LFIIC:689
 Please pull out the power plug when it fullmine so
that the heater won’t be damaged.
items for safety
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!"#$%$&'
This product must be assembled, adjusted and
maintains regularly by professional people accredited
by the manufactory, while the seal conguration is
broken, the machine is ban to operate.
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9
Leading by professional
function and use for main control panel
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):JF:7*-HB9>=I*0:9EI=B
Situation sign
Heating
Temperature
Fire power grade sign
Hot water temperature
indication
Operation sign works
Winter mode Malfunction Display lock Anti-freezing Summer mode
Overheat
protector Pump Water pressure
switch
Fan Air pressure
switch
Room
thermostat
1 2 3 4 5 6
1. Information Indication Display 2. Mode Button 3.Up Button
4.On/Off (Power) Button 5. Down Button 6. Reset Button
 ))3&]_KRQ]NY-Z*`*))3&]_DVQ]DT-Z
 ))3&]_DDQ]DN-Z*`*))3&]_3RQ]3T-Z* -H5O6*&5I7*.8H:89*

10 Leading by professional
(?=CEI82<8=>:6;*>8CE8H=>FH8*:9*PPa-
 Under heating condition, press [Up /Down ] button directly to set the heating
outlet water temperature.At this time, the pre-setting temperature ash indicates, then
set the temperature to 55°C.
 Under heating state, sanitary hot water has priority.
 The boiler will return to heating state automatically when closing the tap.
 [ON/FF] button—Press it ve seconds for turing on or off the boiler. After the
display is locked, it is Unlock Button. When setting the situation, it is Confirmation
Button.
 [Mode] button—It is Winter/Summer swift Button when the gas boiler is on. It
is Set Button when the gas boiler is off.
 [Up] button—Increase the heating and hot water temperature.
 [Down] button—Reduce the heating and hot water temperature.
 [Reset] button—It will reset the malfunction and restart the gas boiler when
malfunction occurs. After entering the menu and set the situation, press Reset Button to
keep memory and quit the menu.
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function and use for the main control panel
The method for turning on/off gas boiler
The method for locking/unlocking button
 Press [ On/Off ] button for more than ve seconds to turn on/off the gas boiler.
 If there is no button operation input for sixty seconds, the system will lock
the button automatically, and the lock sign will indicate all the time.
 After the button is locked, press any button except the on/off button to enter
into the unlock situation, the lock sign ashes, press on/off button to unlock the
button within ve seconds.
<5O*>5*.8>*>A8*<8=>:6;*,8CE8H=>FH8

11
Leading by professional
(?=CEI82,8CE8H=>FH8*5L*A5>*O=>8H*:9*688787*NPa-*
 Under summer condition, press [Up /Down ] directly to set the hot water
outlet temperature. At this time, the pre-setting temperature ash indicates, then set the
temperature to 45°C. (At any time when performing hot water, direct setting is permitted)
function and use for the main control panel
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G=ILF6@>:56*0:9EI=B*"67*G=:6>=:6
-578*C8=6:6;
Flue malfunction
Heating NTC malfunction
Shower NTC malfunction
Overheat malfunction
Gas valve circuit
malfunction
Ignition failure
Fake re error
Back water NTC
malfunction
Flue temperature NTC
malfunction
Outside NTC malfunction
Slash re malfunction
Communication
malfunction
Pipe malfunction
EEPROM malfunction
G=ILF6@>:56*H8=956
Air pressure or air speed
malfunction, ue thermocouple
disconnects.
NTC open circuit and short
circuit.
NTC open circuit and short
circuit.
When the pipe water temperature
is higher than ﹥93°C the
overheat switch disconnects.
The output circuit of the gas
valve is abnormal.
Cannot detect the ame.
Flame detection circuit is out of
control.
NTC open circuit and short
circuit.
NTC open circuit and short
circuit.
NTC open circuit and short
circuit.
There is re after the boiler turns
off four seconds.
The communication is interrupted
or disturbed.
The water pressure switch is not
acted.
EEPROM storage data error.
-578
E 1
E 2
E 3
E 4
E 5
E 6
E 7
E 8
E 9
E A
E b
E C
E P
E E
G=ILF6@>:56*>BE8
Resume
automatically
Resume
automatically
Resume
automatically
Lock(sensor can be
resumed)
Lock
Resume
automatically
Resume
automatically
Resume
automatically
Resume
automatically
Resume
automatically
Resume
automatically
Resume
automatically
Resume
automatically
Lock

12 Leading by professional
D4+E8H=>:56
1) Plug in to reach power, and then open the gas valve.
Press [ON/OFF] to start the boiler, at the mean time,
circulation pump works automatically to exhaust air in
heating system, check in the panel if the pressure drops, if
the pressure is less than 0.7kgf/cm2, pour water again(the
way to pour water is the same as above). When the
pressure reaches balance, press [Mode] button to
make sure the system works under the winter mode (winter
mode is showed in LCD), when the system convert to
normal state, it will ignite and burn automatically. Press
[Up /Down ] button to adjust the heating water
temperature, the range is from 30-80°C, oor heating is
from 30-65°C.
2) When you open the water tap to use sanitary hot
water, press [Up /Down ] to adjust the hot water
temperature(range is from 30-55°C ). The speed of water
output depends on the length of the pipe. After all cold
water ows out, hot water will ow out.
34/5FH*!=>8H*^5H*>A8*<8=>:6;*.B9>8C
1) Open the valve for the pouring water(turn left). Open
all the valves for exhausting air in each room as soon
as open the valve for pouring water and then close the
valves for exhausting air until the water comes out.
2) When the needle in pressure gauge shows between
1-1.2kgf/cm2, close the valve for pouring water.
first operaton
* $+,%-(2*The water replenishing pressure of
gas boiler can’t exceed 1.2kgf/cm2, after lling water,
the water lling valve must be closed immediately,
otherwise , the heating safety valve will open
automatically to release pressure. In order to avoid
unnecessary property loss, please connect a water pipe
with the safety valve and the oor drain.
*****!"#$%$&'
The rst operation
must be after the
boiler’s installation
and eligible
examination.
!
0.7kgf/cm2
3kgf/cm2
1-1.2kgf/cm2
Valve For
Pouring Water
Pressure gauge

13
Leading by professional
K4*^:6:9A*>A8*+E8H=>:56
1) Set the suitable temperature and you can make the
system work normally.
2) If the machines work for a long time, it will be lack of
water. When the pressure is below1-1.2kgf/cm2, pour
the water again.(The pressure is better to be between
1-1.2kgf/cm2 when pour the water)
!"#$%$&'
Under normal use, condensing water will overow from
the condensing water outlet (>1L/h), before using
the product, a water pipe must be connected to the
condensing water to lead it to the oor drain.
first operaton
$+,%-(2* Because of installing acreage or
environment factors,valve for decompression may drain
some water automatically.That is the reason that water
in circulator has thermal expansion.To connect a rubber
duct with the interface of the thermal expansion is the
best way to exhaust the water or control the water
pressure properly while pouring water.
Condensing
water outlet

14 Leading by professional
turn on/off the machine correctly
0.7kgf/cm2
3kgf/cm2
1-1.2kgf/cm2
34,FH6*56*>A8*&=9*]5:I8H
If restart the gas boiler, pay attention to the pressure
gauge rstly. If it is less than 0.7kgf/cm2, please pour
the water again according to the pouring way in page
rst operation. Plug in and connect the power and gas
to turn on the gas boiler according to the operating way
in page first operation after pouring the water again.
(pressure between 1-1.2kgf/cm2)
D4$5>*]8*\987*^5H*"*.A5H>*/8H:57*
Gas boiler needs to be off if it won’t be used for a short
period. Press and then the machine turns off. When
the gas boiler is under OFF state, please keep the
current and gas supply. Gas boiler will run according to
self-protection program.
K4$5>*]8*\987*^5H*"*)56;*/8H:57*
Gas boiler needs to be off if it won’t be used for a long
period. Press and then the machine turns off. Cut
the current and gas supply, close gas switches and
valves for heating/domestic hot water system. For
preventing frostbite, exhaust all the water in the boiler
(heating and domestic hot water) and in the heating
pipe, close the gas valves and pluck the plug.

15
Leading by professional
cleaninG and maintenance
-A8@W*56*>:C8*
56@8*=*B8=H








−
−
−
−
−
−
N4*-I8=6:6;*"67*G=:6>=:6
Gas boiler must be cleaned and maintained more than one time per year. If over one
year, the trash in each pipe will make the performance debase and make some noise,
which becomes the reason for malfunction. If it happens, please contact our after-sales
service department and clean the boiler under the skilled man’s direction. (Cleaning and
maintenance must be before the heating period)
-A8@W*56*>:C8*
56@8*=*B8=H








−
−
−
−
−
−
-A8@W*56*>:C8*
>O:@8**=*B8=H














Attention:necessary, - not necessary.
G=:6>86=6@8
Check the obturator
Clean the heat exchanger beyond the
ue
Clean the combustion chamber, fan
and inner pipe
Check the device for electricity and gas
Check the gas ow volume and
pressure
Check all the smoke pipes
Clean the burner and exam the re
performance
Check the water system
Analyze combustion state
Check the lubrication of components
Check the tightness of gas device
Clean the quadric heat exchanger
Check the performance of electric and
electronic components
Volume and speed of the fan
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5L*EH57F@>*=67*=@@8995H:894

16 Leading by professional
Abnormal Reasons
Close the mid-valve connected
by gas pipe. Don’t turn on or
off the electrical equipments
and then ventilate. Contact the
supplier or the local after-sales
service department to make it
repaired. Use the suds termly
to make sure whether there is
gas leakage on the connection
of the gas pipe.
Does the fuse break? Does
th e electr ica l s our ce wo rk
normally? Does the gas supply
normally?
Are the air supply tube and
smoke pipe built up? Is the
heating pipe unimpeded?
Is the installation for the air
supply tube and smoke pipe
correct? Are there some gaps
on t he s moke pi pe? Is th e
blaze normal? (Is there yellow
blaze)
Is the distributing valve for
radiation open? Is the heating
temperature set too low? Is
there air in the radiator?
Is the temperature set too low?
Are there several places using
water? Is there leakage in the
hot water pipe? Is the water
supply pressure too low? Is the
valve for water supply close?
make sure the followinG items before repairinG
Abnormal Occurrence
"*;=9*9C8II
*-=6d>*:;6:>8
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OA86*9>=H>
*"*9C5W8*9C8II
]=7*A8=>:6;*8LL8@>
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O=>8H*:96d>*A5>[*
!=B*>5*G=:6>=:6
Close the mid-valve connected by
gas pipe. Don’t turn on or off the
electrical equipments and then
ventilate. Contact the supplier
or the local after-sales service
department to make it repaired.
Use the suds termly to make sure
whether there is gas leakage on
the connection of the gas pipe.
Change a new fuse(250V/3A).
Check the outer electric circuit.
Open the mid-valve, and if the
gas is used up (provided you use
LPG), please rell.
Please consult installing guider.
Please exam the heating pipe and
mid-valve.
Please consult installing guider.
Please mend the gap. Clean and
maintain more than one time per
year.
Please adjust to heating mode.
Please exam the heating pipe
and mid-valve. Please compare
each room’s acreage firstly and
compare the open state of valves
for the distributors. Please set
a suitable temperature. Please
exhaust all the air in the pipe.
Please set a suitable
temperature. Please close
excessive taps. Please mend the
places where leak. Please take
some measures (such as add a
raising-pressure pump) when the
water pressure is less than 0.02
MPa(0.2kgf/cm2). Please open the
valve for water supply.

17
Leading by professional
technical data
LL1GBQ37-B40CV LL1GBQ26-B28CV LL1GBQ22-B24CV LL1GBQ17-B18CV
Wall mounted condensing gas boiler
AT. DK. EE. FI. GB. GR. IE. IT. LV. NO. PT. CZ. SK. SI. ES. SE. CH. RO
C13 C63
I2H
2H-G20-20 mbar
5
STYLE
Appliance category
Countries
Boiler type
Gas type
Using gas
NOX class
POWER
Nominal heat input (Qn)
Nominal heat output (Pn)
Nominal condensing output
Minimum heat input (Qr)
Minimum heat output (Pr)
EFFICIENCY
Efciency 100% of Nom. Power (80/60℃)
Efciency 100% of Nom. Power (50/30℃)
Efciency 30% of Nom. Power
TECHNICAL PARAMETERS
Nominal nature gas consumption
Preventing-frostbite system’s start temperature
Minimum efuent volume of D.H.W.
Maximum pressure of D.H.W.
Minimum pressure of D.H.W.
Expansion vessel capacity
Expansion vessel preload capacity
Maximum heating system pressure
Nominal nature gas pressure
PERFORMANCE
Maximum heating water temperature
Minimum heating water temperature
Maximum D.H.W. temperature
Minimum D.H.W. temperature
D.H.W. owing rate ( △T=25℃)
D.H.W. owing rate ( △T =30℃)
CIRCUIT
Voltage/frequency
Input electricity power
Electric insulation degree
-
-
-
-
-
-
kW
kW
kW
kW
kW
％
％
％
m3/h
℃
kg/min
bar
bar
L
bar
bar
mbar
℃
℃
℃
℃
kg/min
kg/min
V~/Hz
W
37.5
6.2
40.1
37.1
6.6
99
107
109.4
3.97
5
2.5
8
0.2
8
0.5
3
20
85
30
60
30
23
17.7
230/50
150
IPX4D
26
6.2
28
25.7
6.5
99
107
109.8
2.75
5
2.5
8
0.2
8
0.5
3
20
85
30
60
30
16
12.2
230/50
110
IPX4D
22.5
5
24
22.3
5.4
99
107
109.7
2.38
5
2.5
8
0.2
8
0.5
3
20
85
30
60
30
13.8
11.5
230/50
110
IPX4D
17
4.5
18
16.8
4.8
99
107
109.6
1.8
5
2.5
8
0.2
8
0.5
3
20
85
30
60
30
10.3
8.6
230/50
110
IPX4D
*-H5O6*&5I7*.8H:89*

18 Leading by professional
appearance and dimension
unit:mm

))3&]_DVQ]DT-Z*`*))3&]_DDQ]DN-Z*`*))3&]_3RQ]3T-Z

))3&]_KRQ]NY-Z
A. Gas Inlet (G3/4”)
B. D.H.W. Outlet (G1/2”)
C. C.W. Inlet (G1/2”)
D. B.F.W. Inlet (G3/4”)
E. W.O.H. Outlet (G3/4”)
D.H.W.=Domestic Hot Water
C.W.=Cold Water
B.F.W.=Back Flow Water
W.O.H.=Water Of Heating
A. Gas Inlet (G3/4”)
B. D.H.W. Outlet (G1/2”)
C. C.W. Inlet (G1/2”)
D. B.F.W. Inlet (G3/4”)
E. W.O.H. Outlet (G3/4”)
D.H.W.=Domestic Hot Water
C.W.=Cold Water
B.F.W.=Back Flow Water
W.O.H.=Water Of Heating

/=@W:6;*):9>*:6*"*!A5I8*\6:>
appendix
1.Host machine
2.Installation bag
Two pothooks
Two expansion bolts (used for x the pothook)
3.Accessory bag
One user’s guide