Ravenheat HE 85 A, Инструкция по установке и обслуживанию

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5.11 DOMESTIC HOT WATER (Fig. 46)
5.11.1 The domestic hot water circuit does not need
a safety valve but it is essential to ensure that
the pressure of the cold water supply does not
exceed 10 bar. If in doubt it is advisable to
install a pressure reducing valve The minimum
pressure needed to operate the domestic hot
water system is 0.5 bar with a flow of approx
3 Lts per min. The regulator screw on the
cold water outlet of the diverter valve may be
adjusted to prevent excess volume flow (Fig.
53 COMMISSIONING SECTION) Flush out
all foreign matter from the supply pipe before
connecting to the appliance.
- Connect the 15 mm. cold water pipe to the
stop cock to the appliance inlet.
- Connect the 15 mm. hot water pipe with a
suitable connection.
5.12 SAFETY VALVE DISCHARGE
5.12.1 The safety valve is located near the pump.
It has a threaded outlet RC 1/2” (to 15 mm
copper) to permit a discharge pipe to be
connected. When connecting ensure the
discharge pipe does not restrict access. The
discharge should terminate facing downward
exterior to the building in a position where
discharging (possibly boiling water & steam)
will not create danger or nuisance, in easily
visible position, and not to cause damage to
electrical components or wiring.
The discharge must not be over an entrance
or a window or any other type of access
5.13 ELECTRICAL CONNECTIONS
5.13.1 IMPORTANT: Electricity supply must be as
specified in clause (sect. 4.10)
- When controls external to the appliance
are required, design of the external
electrical circuits should be undertaken by
a competent person. In accordance with the
IEE wiring regulations.
It is essential that all external controls must
be volt free.
Factory fitted internal wiring must not be
disturbed when wiring external controls
- To gain access to the electrical box remove
the front panel of the case as described in
clauses (sect. 5.4.1) and the instrument
panel as described in clauses (sect. 5.4.3).
- The terminals are easily visible on the front
of the electronic control board (Fig. 48).
- Heat resistant flexible cable is fitted
between the isolator and the terminal block
A 3 core cable of 0.75 mm
2
(24x0,2 mm) to
BS 6500.
Make sure all wires to the appliance are
routed away from sharp edges and hot
surfaces.
The cable must be fastened with its cord
anchorage and connected so that should the
cable slip from the anchorage the current
carrying conductors become taut before
the earthing conductor. Securely tighten all
terminal screws and arrange the cable with
slack between the cord anchorage and the
terminal block
WARNING: If the supply cord is damaged,
it must be replaced by a service engineer
(supply cord available from Ravenheat
Manufacturing Ltd).