Baxi LUNA DUO-TEC 1.48 GA, Installation Instructions For The Installer

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240012485 REV C [06/30/2019]
INST
ALLER Section (en)
8.8 Indirect Storage Tank
A Heating system
B Three way diverter valve
C
Heating water flow
D Heating supply to DHW indirect storage tank coil
E Heating water return
F Tank
G
Optional 10k Ω DHW priority sensor tank
Boiler 1.48 GA can be electrically connected to indirect storage tank as follows:
•
Connect DHW priority 10k Ω sensor NTC to terminals 9-10 on terminal block M2.
•
Insert 10k Ω NTC sensor element in the sensor well of indirect storage tank.
• Verify exchange capacity of the storage boiler coil is appropriate for boiler power.
• Adjust DHW tempe95 °F...+140 °F (+35 °C...+60 °C) by pressing
on boiler Control.
•
IMPORTANT: set parameter P03 = 05 as described in: "PARAMETER SETTINGS".
FIGURE 8-7 Kt Indirect Storage Tank
NOTICE
Sensors used for this boiler are proprietary to the manufacturer. Use of after market sensors will
diminish boiler performance.
10K
Ω Sensor
8.9 Management of 0-10V Input
P78=1 P78 = 2
0-10V DC Electrical Signal Input Heating Flow Setpoint Temperature Central Heating - Heat Input (Gross)
(V) (°F) (°C) (kW) (Btu/h)
0...3 OFF
3 77 25 4.9 16,650
4 95 35 8.4 28,900
5 108 42 12.0 40,800
6 124 51 15.4 52,400
7 140 60 18.5 63,050
8 154 68 22.2 75,650
9 167 75 25.3 86,200
10 176 80 27.4 93,550
The functions with 0...10V regulator are activated by means of their parameters. When the function is enabled ( P82 =3) and P78 =1,
the input manages the heating set point temperature directly; when P78 =2, the input manages the heating power input directly.
Demand is activated above 3V and the heating setpoint is calculated in proportion to deviation from 3 to 10 V DC, to give a setpoint
that goes from minimum to maximum.