MHG Heating ProCon HT 150, Руководство пользователя

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1. Installation
ProCon HT 150 / HT 225
The radiator flow temperature can be monitored as follows (control
types):
-
Only outdoor temperature controlled
-
Outdoor temperature and time controlled
-
Outdoor temperature and time controlled with outdoor
temperature effect over room unit QAA 70
-
By means of a 0-10 V signal
See installation/ operation/maintenance RVA 47 for more
information.
• Module control unit (LMU)
The LMU incorporates all safety and control functions of the
heat generator module.
Features:
- C
ontrol unit function of automatic burner
-
Burner capacity regulation with fan speed control
-
Boiler temperature control
-
Electronic safety temperature limiter with boiler flow and return
sensors for regulation and monitoring
-
Safety temperature limiter via flue gas temperature sensor
-
Automatic pump function and anti-block function
-
Simple electrical connections
-
Flame control and ignition with a joint electrode
• Bus clip-in module (OCI)
The OCI is used to communicate via a 2-wire interface and enables
the set-up of the system between LMU and RVA 47 with LPB bus.
• Control panel (AGU)
The individual LMU's can be controlled via the AGU, e.g. when
adjusting the combustion values during start-up or servicing. The
operation statuses and boiler temperature are indicated on the
AGU segment display.
• Outdoor sensor (QAC 31)
Outdoor sensor QAC 31 for wall mounting, protection code IP 21,
safety class II safety extra low voltage, NTC, including plugs and
fastening screws.
• RVA controller, see description of total price list
•
Domestic water sensor QAZ 21
94.19314-5002 (4 meters)
94.19314-5003 (6 meters)
Storage tank sensor QAZ 21 for recording hot water storage tank
temperature for ProCon HT 150 / HT 225 cascade (RVA 47) with
connection cable 2 x 0.5 mm², Ni 1000 Ohms at 0°C.
1.4 Control function
•
Boiler circuit temperature control
The burner starts at the request for heat by the heating circuit. The
temperature control integrated in the LMU ensures the attainment
and maintaining of the boiler temperature according to the given
set point value of the RVA 47 by changing the burner capacity.
•
Demand-dependent boiler circuit control
The RVA 47 calculates the outdoor temperature, heating curves
and individual timing program to establish the present set point
temperature for the boiler circuit. To enable the "outdoor
temperature dependent weather control" function, an outdoor
sensor is connected to the cascade controller.
•
Automatic pump function / Pump kick
To prevent pump malfunction, the boiler controls executes a pump
kick as soon as a pump is not in operation for 24 hours. The
duration of the pump kick is adjustable.
•
Pump overrun
A pump-overrun time can be programmed for the heating circuit pumps. If there is
no request for heat for the boiler circuit, the pump will run for the
set overrun time.
•
Hot water regulation
The hot water regulation takes place by means of a storage
tank sensor with programmable histeresiz. The set point values
for the hot water temperature and excess hot water volume can
be permanently programmed.
Charging of the storage tank can be done prior to or
simultaneously with the heating operation. (Factory setting:
Prior)
Charging of the storage tank starts once the sensor receives a signal
for a call for heat. In addition to that, the cascade controller adjusts
the boiler temperature to the hot water set point value plus the
programmed excess hot water volume in order to enable a burner
modulation.
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