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INSTALLATION
21
Concord CXSi/H - Installation & Servicing
CXSi
CONCORD
Con 1495
OFF
OFF
6
5
4
3
2
1
L
O
C
K
O
U
T
R
E
S
E
T
BOILER ON
BOILER ON
OVERHEAT
OVERHEAT
LOCKOUT
LOCKOUT
LEGEND
1. Boiler thermostat knob.
2. Control box.
3. Mains inlet gas cock.
4. Overheat thermostat .
5. Boiler on light.
6. Lockout light.
7. Lockout reset button.
8. Burner pressure test point.
9. Inlet pressure test point.
10. Overheat light.
11. High/low gas valve
1. Check that the boiler thermostat knob (1) on the control
box (2) is OFF.
2. Ensure that the mains gas inlet cock (3) is open (groove
in the square head in line with the gas pipe).
3. Press in and release the overheat thermostat button (4).
4. Switch on the electrical supply to the boiler.
5. Ensure that all system controls (time switch, system
controls etc.) are calling for heat.
6. Turn the boiler thermostat knob (1) to position 6.
20
INITIAL LIGHTING
7. The boiler will light at Low rate and the Boiler-on light (5)
will be illuminated. If it does not light the Lockout light (6)
will be illuminated. Press in and release the Lockout
button (7). The controls will reset and attempt to relight.
8. The burner will remain at Low rate for about 1 minute
before going to High rate.
9. Check all connections for gas soundness, using leak
detection fluid.
10.Set the boiler thermostat knob and the system controls to
the required settings.
11. Turn off the electrical supply to the boiler.
1
5
7
6
10
Con 1909
8
3
9
11
2
4
INSTALLATION
157294-3.pmd 11/8/2005, 10:04 AM21