Chaffoteaux & Maury Calydra Green 24, Calydra Green 30 Maintenance And Service Manual
MAINTENANCE AND
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JKLMN
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88
JKLMN
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235
32
C
Dimensions
SERVICE GUIDE
Fanned Flue Condensing
Combination Boiler
Heating and Storage Domestic Hot
®
67
212
Water with TSS
Outer case dimensions :
- Width : 440 (minimum space required 450)
- Height : 850
- Depth : 24 kw : 380 30 kW : 405
360
50
737
850
24 kW : 380
30 kW : 405
I Safety valve outlet
J Heating flow
Flue types:
C 13: - C 33 - C 53
Technical data
Heat gross input C.H. max ............................ 9.2-27.8 kW 10.4-31.6 kW
Heat gross input D.H.W. max........................ 9.2-27.8 kW 10.4-31.6 kW
Heat output C.H. 50°/30° max....................... 9-26 kW 10-30 kW
Heat output C.H. 80°/60° max....................... 8-24 kW 9-28 kW
Heat output DHW maxi ................................. 8-24 kW 9-30 kW
C.H. operating temperature........................... 80°C max 80°C max
C.H. circuit pressures Min operating ............. 0.7 bar 0.7 bar
C.H. circuit pressures Max operating ............ 2.5 bar 2.5 bar
D.H.W. flow rates 30°C ................................. 12.5 l/min 14.5 l/min
D.H.W. flow rates 35°C ................................ 10.7 l/min 12.4 l/min
Cold water mains pressures Min operating... 0.5 bar 0.5 bar
Cold water mains pressures Max operating.. 10 bar 10 bar
Flow limiter rate............................................. 8 l/min 10 l/min
Safety discharge ........................................... 3 bar 3 bar
Expansion vessel - Pre-charge pressure ...... 0.7 bar 0.7 bar
Net capacity at 3 bar in litres......................... 5.44 5.44
Supply ........................................................... 230 v 230 v
Consumption ................................................. 150 w 150 w
Protection ...................................................... IP 44 IP 44
Fuse F1/F2/F3/F4 ......................................... 2 A/1.25 A/0.315 A/0.250 A
External controls ........................................... 24 v 24 v
K D.H.W. flow
L Gas supply
M Cold water inlet
N Heating return
24 kW
30 kW
Safety valve
center line
All dimensions in mm
24 kW
Natural gas G20
Gas rate C.H. max .................. 2.64 m3/h 3.01 m3/h
Gas rate D.H.W. max .............. 2.64 m
Gas rate C.H. & D.H.W. min ... 0.87 m
Gas valve restrictor diameter .. without without
Propane L.P.G G31
Gas rate C.H. max. ................. 1.94 kg/h 2.21 kg/h
Gas rate D.H.W. max. ............. 1.94 kg/h 2.21 kg/h
Gas rate C.H. & D.H.W. min ... 0.64 kg/h 0.73 kg/h
Gas valve restrictor diameter .. 4.40 mm 4.8 mm
30 kW
3
/h 3.01 m3/h
3
/h 1 m3/h
Pump and expansion vessel characteristics
20 40 60 80 100 120Pf140 160 180 200 220 240
0,7
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
1,7
1,8
1,9
2,0
80°C
70°C
60°C
50°C
40°C
260
Pression à froid pour le circuit chauffage (en bar)
0
4
3
2
1
5
6
100
200
800
700
600
500
400
300
900
1000
1100 l/h
mCE
Débit mini (robinets thermostatiques fermés)
Hauteur manométrique
GVF
GVO
PVF
PVO
bar
0
1
3
4
Pump head available
Minimum flow rate (with all heating thermostatic valves closed)
GV F= high speed by-pass closed
GVO = high speed by-pass open
PV F= low speed by-pass closed
PVO = low speed by-pass open
10
7
2
3
8
12
6
13
Central heating initial pressure when cold (in bar)
System capacity chart
Note : The system initial pressure should be over the following value :
System static height (in metre) + 0.7 = Initial pressure (in bar)
Components location
1.- Steel chassis complete with expansion vessel
2.- Sealed chamber
3.- Burner and heat exchanger assembly
4.- Air / gas connection
5.- 24 V modulating fan
11
9
1
4
5
49
15
18
14
6.- Gas valve
7.- Ignition electrode
8.- Ionisation probe
9.- Ignitor
10.- Combustion products manifold
11.- 24 V transformer
12.- Siphon
13.- Electrical box
14.- Pump
15.- Secondary heat exchanger
16.- Pressure gauge
17.- Three way valve
18.- Automatic air separator and automatic vent
19 - Central heating flowswitch
20.- Domestic hot water flowswitch
21.- Central heating control thermistor
22.- Hot water control thermistor
23.- TSS Control thermistor
24 - Overheat sensor
25 - TSS ®(mini cylinder)
26 - DHW pressure relief valve.
40.- Central heating flow isolating valve
41.- Domestic Hot Water outlet
42.- Gas service tap
43.- Water service tap
44.- Central heating return isolating valve
45.- Central heating pressure relief valve
46.- User’s guide
47.- Connecting tails (x 5)
48.- Adjustable by-pass
49 - Silencer
C liter
10
46
47
40
41
42
43
16
24
22
21
19
17
48
25
20
23
26
44
45
2
FUNCTIONING
Control panel
33
36 39
32
27
28
37
3435
29
Switching on
1. Check that the pressure in the Central Heating system is above 0.7 bar and below 1.5 bar with the pressure gauge 16.
2. Check that the gas service tap is opened at the gas meter and the main power is on. Green indicator Power ON
3. Open the gas tap
The boiler is now ready to use.
Attention ! If the boiler remains off for a prolonged period of time, air may collect in the gas pipes and can hinder the boilers initial
attempts to light. (please refer to section 18 Incorrect Function)
42.
30
38
27 - Display
28.- Domestic Hot water switch
29.- Green indicator – Domestic Hot Water mode ON
30.- D.H.W. temperature reducing key
31.- D.H.W. temperature increasing key DHW mode indicator
32.- Central Heating switch
33.- Green indicator – Central Heating mode ON
34.- Central Heating temperature reducing key
35.- Central Heating temperature increasing key
36.- Green indicator – Power ON
37.- Orange indicator - Burner ON
38.- Red indicator - Lock out / flame failure
39.- Reset key
31
36.
Switching on the Central Heating
Press key 29 , the green indicator 33 will light and the display will show the Heating
flow temperature.
Keys
system depending on the weather conditions.
• press to increase temperature when the weather is cold
• press to reduce temperature when the weather is fair
During the temperature setting operation the display will flash.
If the room thermostat is calling for heat, a dot will be displayed at the bottom of the 3rd digit
34 and 35 allow the adjustment of the temperature required in the Central Heating
3
Switching on the Domestic Hot Water
Press key 28 , the green indicator 32 will light :
If there is no water demand
the display will show the following graphic
If the tank is heating up
the digit will move clockwise on the display
In case of draw off
a square made of 4 digits will move clockwise on the display
30 and 31 allow the adjustment of the temperature required for the Domestic Hot Water flow. During the tempera-
Keys
ture setting operation the display will flash.
Note : The configuration of the C.H. system can generate some gravity effect when the boiler is set in D.H.W. mode only. It may
result in a temperature rise of the heating pipes close to the boiler (or eventually a radiator). To avoid this, it is possible to close during the summer period (Central Heating switched off) the heating flow isolating tap (
the Central Heating mode again.
40). Don’t forget to open it before switching on
Switching on the Domestic Hot water and Central Heating together
Press key 29 the green indicator 33 will light.
Press key
28 the green indicator 32 will light.
If there is no water demand
If the tank is heating up
In case of draw off
the display will show the heating flow temperature
the digit will move clockwise on the display
a square made of 4 digits will move clockwise on the display
Stand by mode A fixed digit at the centre of the display and the green indicator 36 on
Putting the boiler in stand by mode and anti-freeze system. :
Press keys 29 and 28
During the duration of the stand-by mode, an automatic anti-sticking system will switch on the pump for 1 minute and
make a movement of the 3 way valve every 23 hours.
The stand-by mode will disable the anti-freeze function of the room thermostat (if fitted). To leave the room thermostat anti-freeze system operative, please leave the Central Heating mode on.
The boiler is equipped with an automatic anti-freeze system which is permanently on.
If the Central Heating temperature decreases below 7°C, the pump will start.
If the Central Heating temperature decreases below 4°C, the pump and the burner will start.
to switch off both DHW and CH mode. The green indicators
,
33 and 32 will stop.
Turn off the boiler
- Press keys 29 and 28
- Switch off the main electrical supply
- Shut off the gas service tap
In this condition, the anti-freeze system is inoperative
Note :
,
42
to switch off both D.H.W. and C.H. mode. The green indicators
4
33 and 32 will stop
Domestic Hot Water Mode
To be able to supply hot water, the DHW
mode should be ON. Press on key
, the green indicator 32 will light.
If there is no water demand, the display
will show the following graphic
the TSS®is cold, the burner
will light immediately.
a square made of 4 digits will move
clockwise on the display .
Keys
30 and 31 allow the adjust-
ment of the temperature required for
D.H.W., flow. During the temperature
setting operation, the display will flash.
When a tap or a shower is turned on, the
flow of mains water, above 2 litres per
min., will activate the DHW flow switch
20 or if the TSS®thermistor is calling for
heat and allow the 3 way valve
move to the DHW position. The pump
can now circulate primary water heated
by the main exchanger through the secondary heat exchanger and TSS®coil.
The primary flow switch checks that this
flow rate is over 4lt./min. before allowing
the lighting sequence to begin.
The fan on the gas valve assembly starts
and when the lighting speed is reached
(detected by a hall effect sensor) the 2
safety solenoids open together to allow
gas to the burner. The ignition sequence
begins and a continuous high speed
spark ignites the gas. As soon as a flame
is detected, the orange indicator led
will light and the regulation system will
be able to adjust the gas rate regarding
the heat load. If the TSS®thermistor is
In case of draw off,
28
if
17 to
34
calling for heat, the burner will stay in
minimum output. If a flame is not detected, after 10 seconds, the security solenoids close together and shut off the
gas. The red lockout indicator led
light. Press the reset button to re-light
the burner.
For flow rates of less than 2 l/min, the
domestic hot water temperature is controlled by TSS®thermistor
ing thermistor
l/min , the domestic hot water temperature is controlled by hot water control
thermistor
control thermistor
pates the changes of temperature in the
secondary heat exchanger and ensures
accurate temperature regulation.
When the tap is closed the burner may
stay alight until the TSS®cylinder is up
to temperature. Then the burner is extinguished and the pump stops. The boiler
will now stay in the hot water mode for 3
minutes to maintain temperature to
ensure a fast response in the event of a
subsequent hot water demand.
Priority will be given to a demand for hot
water or re-heating of the TSS®cylinder.
This will interrupt the central heating for
the duration of hot water supply.
Central Heating Mode
To be able to supply heating, the mode
should be switched ON. Press key
, the green indicator 33 will light, and
the display will show the Heating Flow
temperature.
Keys
34 and 35 allow the adjust-
ment of the temperature required for the
21. For flow rates over 2
22 and the central heating
21. This system antici-
38 will
23 and heat-
29
Central Heating system regarding the
weather conditions. During the setting
operation, the display will flash.
When there is a demand for heating,
(either from the room thermostat or the
clock) the pump starts. If the boiler temperature control is calling for heat and
the primary flow rate is over 4 lt./min.,
the central heating flow switch operates,
allowing the ignition sequence to begin.
The fan on the gas valve assembly starts
and when the lighting speed is reached
(detected by a hall effect sensor) the 2
safety solenoids open together to allow
gas to the burner. The ignition sequence
begins and a continuous high speed
spark ignites the gas. As soon as a flame
is detected, the orange indicator LED
will light and the regulation system will
be able to adjust the gas rate regarding
the heat load. If a flame is not detected,
after 10 seconds, the security solenoids
close together and shut off the gas. The
red lockout indicator LED
Press the reset button to re-light the
burner.
The Central Heating flow temperature is
controlled by the Central Heating control
thermistor
designed to minimise cycling and will not
attempt to re-light for at least 3 min. after
the boiler thermostat has been satisfied.
When the room thermostat is satisfied ,
the burner will switch off and the pump
will remain running for a further 3 minutes before it too stops.
Note: It is possible to override the 3
minute delay by pressing the Reset key
39.
21. The boiler has been
38 will light.
37
5
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