Robur GAHP Line AR Series, Инструкция по установке, эксплуатации и обслуживанию

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Overview and technical specifications section
Ed. 2014-08
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into the environment to be heated, ensuring efficiency of 126 % (under nominal
conditions).
The GAHP-AR is equipped with the following devices:
•
Steel sealed circuit, painted with external epoxy paint.
•
Premixed multigas burner with ignition and flame sensing device managed by
electronic control box.
•
Steel pipe air exchanger with single-rank fin coil and aluminium fins.
•
Titanium stainless steel tube bundle water exchanger, with external insulation.
•
Reversal valve on the refrigerant circuit; it switches the unit between heating and
chilling mode.
•
Two-way automatic defrosting valve, controlled by microprocessor, allows the fin coil
defrosting.
•
Variable (summer operations) air flow helicoidal fan, controlled by microprocessor.
CONTROL AND SAFETY DEVICES
The GAHP-AR is controlled and monitored by the S61 control board through the
peripheral AR10 card. These cards and many other devices compose the control and
safety devices set of the GAHP-AR, listed below:
- S61 control board with integrated microprocessor, with LCD display and encoder;
AR10 peripheral card.
- Plant water flow meter sensor.
- High temperature limit thermostat, manual reset.
- Differential air pressure switch.
- Flue temperature limit switch, automatic reset.
- Sealed circuit safety relief valve.
- Safety by-pass valve, between high and low pressure sealed circuit.
- Antifreeze function for hydronic system.
- Ionization flame control box.
- Double shutter electric gas valve.
- Direct Digital Controller (DDC) with LCD display and knob (encoder), see Figure 2,
page 8.