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ORIGINAL INSTRUCTIONS
VES Andover Ltd Eagle Close Chandlers Ford Ind. Est Eastleigh Hampshire SO53 4NF
Tel: 08448 156060 Fax: 02380 261204 E-mail: [email protected] Web: www.ves.co.uk
Heat Recovery Unit
Installation, Operation and Maintenance Manual
®
Continued
Ecovent®
EVX
units size 1 to 5 are supplied with feet suitable for floor or ceiling-void mounting,
either by use of drop-rod mounting, in either top or bottom access orientation, with airflow in
the horizontal plane.
For alternative mounting please consult your outline drawing as supplied with the unit, or refer
to VES Customer Services for further information.
Secure drop rods/unit with the appropriate fixings as shown below
.
Self-levelling feet are available for floor mounting, with fixings as per drop rods
. The unit
can be further secured to the floor via knockout fixings holes on the feet, fixings to be supplied
by others
.
It is recommended that this is always carried out with stacked units as there is a greater risk of
instability.
When hanging units from drop-rods, ensure that the load is evenly spread and that
ALL
feet are used
within the support. Ensure that the drop rod used is selected appropriatedly to the load of the unit.
It is essential that the unit is level to ensure all components operate correctly. This is particularly
important with twin extract fan units as this may otherwise cause the backdraught flaps to operate
incorrectly.
Unit mounting detail
Fig.
Installation
4
Important
On
EVX/ -E
units, an electric heater battery (EHB) will be installed. Supply to the heater should be 1Phase
or 3Phase with separate neutrals; confirmation of this can be found on the unit nameplate. Cables should
be of silicone rubber, fibreglass or of a similar high temperature insulated type and be installed to current
I.E.E. Regulations
, ensuring a sufficient earth connection to the terminal provided.
Care should be taken not to overstrain the terminal pillars as this may permanently damage the elements.
The heater is fitted with a manual-reset high temperature cutout with normally closed (NC) terminals and
is set to break if the duct temperature rises above 130°C.
It is important that the cutout is connected to the safety circuit so the heater is isolated in the event of
overheating caused by airflow failure.
The electrical supply must be isolated before attempting to reset the manual cut-out and should be given
sufficient time to cool. For further information regarding electric heaters please see
VES Ref. ID431
.
If a speed controller is fitted to the system, it must not stop the fan independently of the control system,
or allow airflow to fall below the stated volume on the electric heater battery. Suitable speed controllers
without on/off switches are available from VES Andover.
Electric Heater
Batteries
Caution
