THERM-X MVHRU IOM
Page 66 of 108
Version 2.2, 18/06/2020
8.11.
CONDENSATE REMOVAL
As long as there are conditions favourable for the creation of condensate ensure the unit condensate outlet
(s) is connected to an appropriate water waste system.
Ensure the equipment is angled slightly (recommended 3
º
) towards the condensate tray outlet spout to
facilitate condensate removal from the unit.
Copper or plastic pipework can be used for the condensate disposal system which should run at a gradient of
about 1:50 (20 mm.m
-1
).
If the pipework connecting the outlet from the unit to the condensate drainage system is installed on a location
that is likely to freeze the pipe must be insulated or equipped with a frost pipe heater.
A condensate removal system is not included with the HRFL II units. If supplied by Barkell the pump or trap is
supplied loose for installation on site by others.
HR95 units have an integral insulated condensate trap with integral freeze protection for the PHE. This must
be connected to an appropriate wastewater system.
A condensate level sensor is fitted in every condensate drain tray and connected to the unit control panel in
order to stop the equipment in case of overflow.
Condensate traps
Before putting the unit into operation, fill in the trap with water, otherwise there is a risk of flooding and damage
to the unit.
The use of a condensate trap is only recommended where gravity assisted drainage is achievable.
Ensure the condensate trap is installed with sufficient height difference from the unit so that the condensate
can drain freely by gravity.
One trap is required per condensate outlet. Two condensate outlet connections should not be joined together
into the same trap.
Condensate pumps
If condensate pumps are fitted these should be properly mounted so pipes and hoses will not kink or become
detached in operation. Pipe clamps should always be used.
Ensure that the condensate discharge point height does not exceed the maximum head of 12m for the
condensate pump.
Avoid fixing the pump body to the unit as it might cause vibration and slip from the surface over time.
The pump body should be fitted in a horizontal, non-slippery surface and mounted on top of an antivibration
pad.
One pump is required per condensate outlet. Two condensate outlet connections should not be joined together
into the same pump.
For additional information on the pump installation, operation and maintenance please refer to the document
Therm-X MVHRU Condensate Pump Installation
and the IOM manual provided with the pump.
