VOKERA Hydra Installation & Servicing Instructions Manual - page 16
14
4.6.5
HOT WATER OUTLET (fig. 6A & 6B)
The appliance is supplied with a 15 mm female
connector. Connect a 15 mm pipe to the supplied
connector and tighten the nut.
4.7
CONDENSATE OUTLET (fig. 6B)
During normal operation the boiler produces
condensate which is collected in a trap located in
the lower part of the boiler. A flexible pipe
(condensate outlet pipe) is connected to the
outlet of the trap. The flexible pipe must be
connected to a plastic waste pipe only. The
plastic waste pipe must have a minimum of a 3
°
fall towards the drain. Any external run of pipe
should be insulated to prevent the risk of freezing.
CONNECTING THE CONDENSATE OUTLET
Gently pull the condensate outlet pipe down from
its location inside the boiler until approximately
250 mm protrudes from the underside of the
boiler. Connect a suitable plastic (not copper)
pipe (no less than 20 mm diameter) to the outlet
pipe and ensure it discharges in accordance with
building regulations or other rules in force.
4.8
AUTOMATIC AIR RELEASE VALVE
Mount the AAV as shown in fig. 12.
4.9
ELECTRICAL CONNECTIONS
The electrical supply must be as specified in
section 3. A qualified electrician should connect
the electrical supply to the appliance. If controls
- external to the appliance - are required, a
competent person must undertake the design of
any external electrical circuits, please refer to
section 8 for detailed instructions.
ANY EXTERNAL CONTROL OR WIRING MUST
BE SERVED FROM THE SAME ISOLATOR AS
THAT OF THE APPLIANCE.
The supply cable from the isolator to the appliance
must be 3-core flexible sized 0.75 mm to BS
6500. Wiring to the appliance must be rated for
operation in contact with surfaces up to 90
°
C.
4.9.1
ELECTRICAL INPUT BOARD
The appliance electrical input board is located
behind the control fascia.
To gain access to the appliance electrical
connections you must proceed as follows:
●
push to release front door panel and lower to
reveal controls. Loosen the 2 captive screws
securing the front control panel to the lower part
of the casing and lower to reveal inside of the
boiler (fig. 13A);
●
remove the 4 screws securing the input board
cover (fig. 13B).
NOTE
The appliance comes with a factory fitted link to
allow basic operation of the boiler via the keypad.
If it is anticipated that external controls will be
required please refer to the wiring diagrams in
section 8 for more detailed information.
4.9.2
CONNECTING THE MAINS (230V) INPUT
(fig. 14)
Remove the electrical input board cover as
described in 4.9.1. Pass the cable through the
cable anchorage. Connect the supply cable wires
(earth, live and neutral) to their corresponding
terminals on the electrical input board. Ensure
that the EARTH wire is left slightly longer that the
others, this will prevent strain on the EARTH wire
should the cable become taut.
Do not remove the 24V-link wire (between
terminals 2 & 3 on plug M7) unless additional
external controls are to be fitted (see section 8).
Re-fit the electrical input board cover.
The securing screw on the cable anchorage
should now be tightened. This must be done
before the control fascia is re-fitted in the upright
position.
Fig. 13A
screws
Fig. 13B
Fig. 12
Fig. 14