Osby Parca 7700130-01-31, Инструкция по установке и эксплуатации

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EL 160 Eco & EL 500 Eco
Input: Current
Range: 4-20mA
Unit: bar
Displays: 11.11
Min: 0.0
Max: 16.0
Disp: Rel
Step R1func: Window
R1.cont: C.I.W
Setp.Lo: 0.25
Setp.Hi: 3.85 eller 5.85
R1.Hyst: 0.0
6.2 General
Under normal operating conditions, all safety monitors have closed connections in the control circuit for the control
equipment's outlet relays and the boiler's contactors. This applies for the ingoing safety valve, pressure transmitter
and overheating protection (max. thermostat).
6.3 Safety valve 1
The safety valve is fitted directly to the boiler and has sufficient capacity, as well as a pressure drop in the inlet which
is less than 3 % of the opening pressure. The outlet flow from the safety valve must be checked during inspection to
ensure that the pressure drop is less than 10 % of the opening pressure, and that it discharges safely.
For safe operation and functionality, a function test should be carried out at least once per year.
6.4 Pressure transmitter
2
If the boiler has a built-in safety system it is also equipped with a pressure transmitter with an outgoing signal of
4-20 mA and a relay controlling that the pressure is within stated range. (The protection closes a contact in the
safety loop if the pressure is within valid range.) If the signal from the pressure transmitter shows to be outside valid
range, the contact breaks the safety loop.
Actual pressure (for the boiler) can be read on the transmitter display inside the boiler.
If the range needs to be change, contact us and we will send you the manual for the transmitter.
At delivery these are the factory settings:
Min pressure is set on 0,25 bar.
Max. pressure is set on 2,85 bar for boilers with 3 bar safety valve
Max. pressure is set on 5,85 bar for boilers with 6 bar safety valve
6.5 Overheating protection (max. thermostat) 3
The boiler is equipped with a overheating protection (max. thermostat Tz) which is set on 105° ±5° C. If exceeded
the maneuver to the boiler contactors will break and provides a signal that triggers the circuit breakers. The max
thermostat resets at about 70 ° C. Before the boiler has cooled down, it is not possible to reset the circuit breaker
and acknowledge the alarm on the display.
To restart the boiler, the circuit breakers on the inside must be reset and the alarm on the display acknowledged.