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De Dietrich Gas 310/610 ECO
8 INSTALLATION INSTRUCTIONS FOR ELECTRICAL INSTALLER
8.1 General
The De Dietrich Gas 310/610 ECO is supplied as standard with electronic operating and flame ionization safety
controls with a specially designed microprocessor at the heart of the system.
The boiler is pre-wired as shown in the wiring diagram in fig. 18. All external connections can be made on the
terminal strips (one low voltage 24V AC and one main power voltage 120V AC).
Each boiler must be fused protected for a single phase power source 120/1/60 @ 15A, the circuit must be earth
grounded and provided with a service switch that is within hand reach.
Warning Electrical shock hazard, can cause personal injury or loss of life, including property damage.
All electrical wiring to the boiler and controls must be protected from ingest of water and be properly grounded and
bonded according to CEC Part I CSA 22.1 & NEC NFPA 70.
8.2 Electrical specifications
8.2.1 Main power voltage
Each boiler requires a 120V 1 60 Hz supply rated at 10 amps
with line/neutral/earth. The boiler is sensitive to line/neutral and
therefore has a facility to ensure that line and neutral are correctly
connected. If line and neutral are crossed, the display will flash
-
/ - alternately.
8.2.2 Control unit
Manufacturer : Honeywell
Type : MCBA 1458 D
Main voltage : 120V 60 Hz
Safety time : 3 sec.
Fig. 13 Position code-key
Each De Dietrich Gas 310/610 ECO has a unique “boiler code.” These codes, together with other data as to boiler
type, counter data, etc., are stored in a “code-key” that belongs to the boiler. If the control unit is replaced this
information remains stored in the code-key.
8.2.3 Power consumption
Power consumption at stand-by / part load / full load
per boiler unit:
310-5: 12 Watt / 53 Watt / 370 Watt
310-6: 12 Watt / 56 Watt / 380 Watt
310-7: 12 Watt / 45 Watt / 470 Watt
310-8: 12 Watt / 45 Watt / 610 Watt
310-9: 12 Watt / 80 Watt / 840 Watt
Max boiler module start current 4 amps excluding a
“system pump” if connected to terminal block X27
connections 9 and 10
Fig. 14 control unit
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