Electrical; Available Pump Head For Central Heating; System Volume; Boiler Schematic - Baxi Luna HT 1.330 Notice D'installation Et D'entretien

Supply
Power Consumption
Internal Fuse
Electrode Spark Gap

2.7 AVAILABLE PUMP HEAD FOR CENTRAL HEATING

NOTE: Only the third speed of the
pump is to be used.
Based on 3.00 psi / 2.11 bar safety valve setting
Expansion tank charge and initial system pressure
Total water content of system using 2.2 gal / 10 l
capacity expansion tank supplied with appliance
For systems having a larger capacity MULTIPLY the TOTAL system capacity in litres (gallons) by
the factor to obtain the TOTAL MINIMUM expansion tank capacity required in litres (gallons)
Note: When the boiler is operating at maximum operating temperature, providing heating with all radiators operating, the pressure
gauge should not indicate more than 25.5 psi / 1.8 bar. If the reading exceeds this figure an additional expansion tank is required.
Operating Mode (Fig. 1)
1. With a demand for heating, the pump circulates water through the primary circuit.
2. The combustion fan will then come on and begin to run at ignition speed.
3. Once the fan reaches ignition speed the control board will allow power to flow to the spark generator and gas valve
creating ignition in the combustion chamber. The flame sensor will acknowledge the presence of a flame in the combu-
stion chamber and send a signal to the control board.
4.The temperature sensor will send a signal to the control board allowing the control board to increase / decrease the
speed of the fan. The combustion fan will in turn modulate the gas rate accordingly.
5. Once the central heating loop temperature exceeds the central heating loop setpoint the unit will shutdown and go
through a 3 minute time delay (burner pause time) before another call for heat.
6. During this time the pump will run for an additional three minutes to dissipate any residual heat.
INSTALLATION AND SERVICING INSTRUCTIONS

2.6 ELECTRICAL

Graph 1

2.8 SYSTEM VOLUME

2.9 BOILER SCHEMATIC

120 V 60 Hz
505 Btu /h - 148 W
F 3.15 A
3.5 to 4.5 mm
bar 0.5
psi 7.25
Litre 120
gal (USA) 26.4
0.0833
9
1.0 1.5
14.5 21.7
91 64
20.0 14.1
0.109 0.156
7109739.01 - en