Installation - Vent-Axia HR400 Installation And Servicing Instructions

HR400
Fig. 4
HR320
Fig. 5
3.1
1. Check the diagrammatic ducting layout
drawing to ensure that the proposed duct
routes, fan unit and air terminal locations can
be accomodated. If in doubt refer to the
Technical Department.
2. The units are suitable for either vertical or
horizontal mounting. After noting the positions
of the electrical connector, duct spigots and
drainage connection on the unit, choose a
suitable installation site for the unit. The most
desirable location for the unit, in single and two
storey properties with a roof space, is in the
roof space.
3. Never locate the unit over a sleeping area -
above the landing or bathroom is always
preferred. The selected site must allow
Condensate Drain
adequate space around the unit for the removal
of the access panel and heat exchanger for
maintenance and servicing puposes.
Condensate Drainage
HR400
4. The condensate drain is supplied fitted to the
unit as shown (Fig. 4).
HR320
5. The unit is supplied with a 22mm diameter
condensate drain fitting, packed loose in the
box. The WH unit casing is moulded with two
22mm diameter drainage spigots in the bottom
corners. The casing of the unit can be set up for
right hand or left hand drainage by cropping the
domed end off either one of these spigots and
pushing on the condensate drain fitting (Fig. 5).
6. The units must be positioned so that the
condensate outlet can be trapped and the
condensate conveyed properly with a
continuous gradient to discharge through the
gable or to the eaves gutter in the selected
location. Parts ref. CP, CPC and CPE are
included with the kit. Connect the drainage
Condensate Drain
system using the parts provided, jointing the
PVC pipework and fittings using PVC cement to
form watertight joints.

3.0 Installation

Installing the Fan Unit
NOTE: Trap should be charged/filled before
operating the system and should be
checked, especially in summer.
BEWARE: A blocked condensate outlet pipe
due to insufficient pipe run (gradient) will
quickly lead to water damage.
7