Noise; Problem – Noise Problem In The Radiator System - Danfoss DHP-AQ Mini Service Instructions Manual

Cause
6. Leak at soldered joints.
7. Associated leakage in the con-
denser.
8. Leak at soldered joint on water
heater (only applies to DHP-AQ Maxi)
9. Associated leakage on plate heat
exchanger (only applies to DHP-AQ
Maxi)
3.5.3

Noise

Table 15. Problem – Noise problem in the radiator system
Cause
1. Flexible hoses missing.
2. Incorrectly installed flexible hoses.
3. Installing/suspending pipes.
4. Circulation noise (whistling noise in
the heating system).
5. Clicking.
Troubleshooting
Locate the leak.
•
Check for lack of refrigerant in the unit.
•
Check by smelling at the safety valve
on the hot side, open the valve and
check.
Locate the leak.
•
Check for lack of refrigerant in the unit
•
Check by smelling at the safety valve
on the hot side, open the valve and
check.
Troubleshooting
Flexible hoses must be installed according
to the instructions.
Flexible hoses must be installed according
to the instructions.
Check if vibrations are transmitted via one
of the pipe mountings in the installation.
Check the heating system.
•
Closed valves, choke valves, adjuster
valves or other restrictions in the radia-
tor system can cause circulation noise.
•
Is the heating system correctly adjus-
ted for flow?
•
Too great a flow in the heating system
can cause circulation noise.
•
Check that the volume tank is installed
and has the correct dimensions for the
relevant system. See the installation
instructions.
•
Establish when clicking occurs, during
heating and/or in connection with
completed hot water production?
•
Locate the clicking noises.
Remedy
Drain the system of fluid, repair the leak.
If the leak is on the connection pipe to
the heat exchanger, also drain the refrig-
erant side.
If the condenser has a leak, replace it.
If there is a leak at the soldered joint,
replace the water heater.
If there is leakage, replace plate heat
exchanger.
Remedy
Install flexible hoses according to the
instructions.
Install flexible hoses according to the
instructions.
Remove or move the mounting point or
install vibration isolating mounting
parts.
If the incorrect type of valve is used to
choke the flow, replace with the correct
type.
If the heating system is not correctly
adjusted, make adjustments.
Can the heating system be run at a
lower flow?
A surge tank can be installed on the sup-
ply line to mix the hot water with the
existing, slightly cooler, water, before it
goes out to the radiators.
Try lubricating lead-ins in walls, ceilings
and floors with silicone spray.
Service instructions VMGFJ102 – 21