Atag A203C Installation & Servicing Instructions

Installation & Servicing instructions ATAG A-Series
27
K01
K01
K01
K1
1. EXTERNAL SAFETY CONTACT*
2. IGNITION
3. GAS VALVE
4. IONISATION
5. EARTH
8. WATER PRESSURE SENSOR P1
10. FAN 230V
11 B. ALTERNATIVE: ROOMTHERMOSTAT
BATTERY POWERED*
11 A. ATAG Z ROOMTHERMOSTAT OPTION
12. OUTSIDE SENSOR T4 OPTION
14. FLOW SENSOR T1
15. RETURN SENSOR T2 16. FLUE GAS SENSOR T5 OPTION
T 3,15 H
T 3,15 H
19. FUSES 250V
20. SERVICE CONNECTOR
N
N
N
L
N
L
L
L
X1
X2
X4
X8
X9
X11
X12
X13
X6
X7
X5
230V
17. WATER FLOW SENSOR
9. DHW SENSOR T3
X10
N
L
L
18. MOTOR 3 WAY VALVE
6. PUMP
N
L
230V AC
SYSTEM
CONTROLS
FUSE
T3,15AH 250V
SL N L
1 2 3 4 5
8G.44.50.00
L N
INSTALLATION
BOILER
21.
JUNCTION
BOX
DOUBLE POLE
ISOLATOR
FUSE
Figure 8.3.a
1. External safety contact 2. Ignition 3. Gas valve 4. Ionisation 5. Earth 6. Pump 7. Main power supply 230V 8. Water pressure sensor 9. DHW sensor 10. Fan 230V 11. Room thermostat 12. Outside sensor 14. Flow sensor 15. Return sensor 16. Flue gas sensor 17. Water ow sensor 18. Motor 3WV 230V 19. Fuses 20. Service connector
8.3 Electrical diagram Combi boilers

Atag A203C Specifications

General

Type	-
Fuel type	Natural gas
Boiler system	Combi boiler system
Product color	White
Heater location	Indoor
Placement supported	Vertical
Boiler type (NL label)	HR
HR inspection label class	107
Maximum power	20000 W
Minimum power	4400 W
Water flow (60 °C)	6 l/min
Domestic Hot Water (DHW) flow	10.7 l/min

Weight and Dimensions

Depth	395 mm
Width	500 mm
Height	650 mm
Weight	37000 g