Grant Aerona3 Series, Инструкции по установке и обслуживанию

Страница: 64 / 88

Section 16: Commissioning Page 64
After the heat pump has been installed and connected to
the oil boiler, the control parameters shown in Section 16.11
MUST be re-set before the Hybrid system can be operated.
!
WARNING
16.1 General
The Grant VortexAir Hybrid unit can be installed in either of the two
following ways:
•
The oil boiler and heat pump installed at the same time, to
operate together as a hybrid unit, or
•
The boiler installed to initially operate as a ‘stand-alone’ unit with
the heat pump installed at a later date.
In either case the oil boiler should be commissioned first using the
procedure detailed in this section.
16.2 Oil Boiler
It is important that the following commissioning procedure is carried
out to ensure safe and efficient operation of the boiler.
To access the boiler/hybrid control panel, remove the lower panel
(turn the handle and pull it forwards at the bottom and remove from
casing). The control panel is shown in Figure 7-6.
16.3 Before Switching On
1. Ensure the boiler On/Off switch and the test switch are set to
OFF.
2. Check that the high limit thermostat and boiler control
thermostat sensors are correctly located in their respective
pockets. Refer to Figures 5-1, 5-2 or 5-3. Check condition
of thermostat capillaries, not damaged, broken, kinked or
crushed.
3. Remove the nuts and washers securing the front cleaning door.
Withdraw the door - take care it is HEAVY!
4. Check that the turbulators are in position and that the ends are
vertical.
5. Check that the baffles are in position. Refer to Figures 11-1, 11-
2, 11-3 or 11-4 as required.
6. Re-fit the cleaning door and check it is fitted correctly and that
a good seal is made.
7. Remove and check the burner. Check that the burner head
is correct. Refer to Section 2.3 and Figure 11-9. Check the
electrodes are set correctly. Refer to Figure 11-6 or 11-8 as
required. Check the nozzle is correct for the output rating
required. Refer to Section 2.3.
8. Check that the water system has been vented, pressurised and
there are no leaks.
9. Ensure the automatic air vent on the condensing heat
exchanger is open.
10. Check that all fuel line valves are open.
11. Remove the plastic burner cover if it was not previously
removed.
12. Connect a combined vent manifold and pressure gauge to the
pressure gauge connection port on the oil pump. See Figure
3-6. Open the vent screw on the vent manifold to vent the
supply while the pump is running.
13. Check that all system controls are calling for heat and turn the
boiler thermostat to maximum.
16 Commissioning
16.4 Setting the Hybrid Temperature Controls
In order to achieve the most efficient operation of the Grant VortexAir
Hybrid, using the Heat Pump to the maximum, it is essential that the
temperature controls are correctly set before first using the unit.
The required temperature settings are determined by using the
Grant VortexAir Hybrid Calculator, available as a download from the
Grant UK website www.grantuk.com.
This calculator must be used to determine the correct setting
temperatures for the two-stage Boiler Control and Air Control
thermostats.
Refer to the user instructions provided with the Grant VortexAir
Hybrid Calculator for guidance.
Enter the following information:
•
Calculated heat loss for the building concerned
•
Ambient design temperature
•
Flow temperature
•
Radiator design temperature
•
Type of heat emitters
The following nine hybrid settings will be calculated and displayed
by the calculator.
These must be set on the Heat Pump controller, the Boiler Control
Thermostat and the Air Control Thermostat, as detailed below:
• H1 - Heat Pump Flow Temperature
Set the Heat Pump controller to this temperature using Parameter
21 02.
Refer to Section 3.7 of the Installation Instructions supplied with the
Grant Aerona³ heat pump for guidance on accessing and setting
heat pump parameters.
The factory default value for parameter 21 02 is 45°C. This must be
checked and re-set, if required, to give the required value (H1) as
indicated by the calculator.
Note: this can only be done after the Heat Pump has been installed.
• B1 - Oil Boiler Flow Temperature – 1st Stage (relay R1)
Set this as parameter SP for the 1 st stage on the Oil Boiler Control
Thermostat.
The factory default value for parameter SP is 52°C. This must be
checked and re-set, if required, to give the required parameter SP
value (B1) as indicated by the calculator.
Refer to Section 16.5.1 for guidance on setting parameter SP (B1)
on the Oil Boiler Control Thermostat.
• B2 - Oil Boiler Hysteresis – 1st Stage (relay R1)
Set this as parameter C1 for the 1
st
stage on the Oil Boiler Control
Thermostat.
The factory default value for parameter C1 is +3°C. This must be
checked and re-set, if required, to give the required parameter C1
value (B2) as indicated by the calculator.
Refer to Section 16.5.1 for guidance on setting parameter C1 on the
Oil Boiler Control Thermostat.
• B3 - Oil Boiler Flow Temperature – 2nd Stage (relay R2)
Set this as parameter SP2 for the 2
nd
stage on the Oil Boiler Control
Thermostat.
The factory default value for parameter SP2 is 63°C. This must be
checked and re-set, if required, to give the required parameter SP2
value (B3) as indicated by the calculator.
Refer to Section 16.5.1 for guidance on setting parameter SP2 Oil
Boiler Control Thermostat.