Robur K18 Simplygas, Инструкция по установке, эксплуатации и обслуживанию

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Features and technical data
Installation, use and maintenance manual – K18 Simplygas
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1 FEATURES AND TECHNICAL DATA
1.1
FEATURES
1.1.1 Available range
A distinction must be made from the application perspective
based on the type of service provided:
A. Systems for space heating only.
B. Systems for space heating and DHW production, with basic
DHW functionality.
C. Systems for space heating and DHW production, with ad-
vanced DHW functionality and management of one or more
heating circuits.
Systems for space heating, DHW production and heating circuit
management require the use of the optional OQLT021 system
controller.
All K18 Simplygas appliances are available in the outdoor in-
stallation version.
Figure 1.1 Available range for the family of K18 systems
K18 K18 K18
K18 SIMPLYGAS K18 SIMPLYGAS K18 SIMPLYGAS
GAS ABSORPTION
HEAT PUMP
HEATING ONLY H BASIC DHW
H ADVANCED DHW
+ HEATING CIRCUITS MANAGEMENT
Table 1.1
Selection guide
Heating only Space h basic DHW Space h advanced DHW + heating circuits management
K18 Simplygas
- aerothermal gas heat pump
- heating efficiency 169%
- use of aerothermal renewable energy
for heating hot water production up
to 65 °C
- heat input 11,2 kW
- delivered heat output 18,9 kW
K18 Simplygas
- aerothermal gas heat pump + 200/300 liter DHW
buffer tank (optional)
- use of aerothermal renewable energy for heating hot
water production up to 65 °C
- use of aerothermal renewable energy also for buffer
tank DHW production up to 70 °C
- heat input 11,2 kW
- delivered heat output 18,9 kW
K18 Simplygas
- aerothermal gas heat pump + system controller (required) +
200/300 liter DHW buffer tank (optional)
- use of aerothermal renewable energy for heating hot water
production up to 65 °C
- use of aerothermal renewable energy also for buffer tank DHW
production up to 70 °C
- controlling secondary zone circuits (via the system controller)
- heat input 11,2 kW
- delivered heat output 18,9 kW
1.1.2 Operation
The K18 Simplygas heat pump is based on the thermodynam-
ic water-ammonia absorption cycle (H
2
0–NH
3
), and produces
hot water using outdoor air as a renewable energy source (cold
source) and natural gas as primary energy.
The thermodynamic cycle takes place within a hermetically
sealed circuit, in welded construction, perfectly tight, facto-
ry-tested, which does not require any maintenance or coolant
top-ups.
1.1.3 Mechanical and thermo-hydraulic components
▶
Steel sealed circuit, externally treated with epoxy paint.
▶
Sealed combustion chamber suitable for outdoor installa-
tions.
▶
Burner equipped with ignition and flame detection device,
controlled by an electronic controller.
▶
Titanium stainless steel shell-and-tube water exchanger.
▶
Stainless steel, shell-and-tube recovery exchanger of flue gas
latent heat.
▶
Air exchanger with finned coil, with steel pipe and alumin-
ium fins.
▶
Automatic microprocessor-controlled finned coil defrosting
valve.
▶
Standard supplied water pump.
1.1.4 Control and safety devices
▶
GHP10/GHP11 electronic board with microprocessor, dis-
play and selection keys.
▶
Water flowmeter.
▶
Generator limit thermostat, with manual reset.
▶
Flue gas thermostat, with manual reset.
▶
Sealed circuit safety relief valve.
▶
Bypass valve, between high and low-pressure circuits.
▶
Flame control board.
▶
Double shutter electric gas valve.
▶
Antifreeze functions for hydraulic circuit.
▶
Condensate discharge sensor.
1.1.5 Controlling an optional auxiliary boiler
(external)
A control system has been designed for the K18 Simplygas unit,
called Armonia, which allows integration between the heat
pump and an optional auxiliary boiler to be managed as opti-
mally as possible in order to provide the best performance in
terms of comfort and energy efficiency.
Specifically, as shown in Figure 1.2
p. 8 below, various cases
are possible:
A. Very low load: active auxiliary boiler in modulation and
heat pump off (replacement at a particularly mild outdoor