Hitachi RASM-2VRE Installation And Setup page 12

First ensure that the base station for the heating system is not sending a demand for heating.
Some systems let you do this on the base station and some need the thermostat to be turned
right down. Make sure you are in Installer Mode too before starting.
Once this is done press the left right icons and select the C1 segment of the display (3). Now
press the ON / OFF button, which should light up green.
Now send a signal from the thermostat base station to the heat pump to run. The pump icon should now show
followed by the compressor logo. This may take some minutes. Be patient.
Once the pump logo has come on check the pump water flow using the instructions and table on page 9. If you
are low on water flow then cease testing and investigate. If not carry on.
After the compressor logo has come on then go outside and check that the outdoor fans are working, the com-
pressor is running and there is nothing untoward happening.
After twenty minutes to half an hour use the MENU key to go into the main menu, select OPERATION INFORMA-
TION and GENERAL. This will show you the flow and return temperature. Check that the flow temperature is
higher than the return by around 4 to 6C. Take note of these temperatures as well as the Water Setting and
Outdoor Ambient temperatures.
Now go back to OPERATION INFORMATION and select HEAT PUMP DETAILS. Check the water flow rate is still
correct and note down the other operating conditions as below
• Water Inlet and Outlet
• Water Outlet PHEX
• Water Flow rate and pump speed
• Outdoor Ambient Temperature
• R410a temperatures and pressures
• Expansion Valve %
• Inverter Operating Frequency
• Compressor Current
While you have the system in heating mode then this is a good time to bleed any radiators and ensure that any
part of the heating system you are responsible for is working correctly.
Once you have taken note of everything and can confirm that everything is working fine in heating mode then
turn the room thermostat (or base station) OFF and confirm that this stops the heat pump.
Once this is confirmed then use the ON/OFF switch to turn the heat pump off again so the green light goes out.
T: 0191 516 6554
System Test—Heating Mode
W: www.seconrenewable.com
Select me using the arrow keys
Press Me
I should turn green
If I turn red then there is a problem!
Key points to take care of
Have I got good water flow?
Am I getting 4 to 6C temp diff?
Is the water getting hot and going to the
right place?
Does everything sound and feel right?
E: info@seconrenewables.com