Elson Zircon 190 S Ind, Инструкция по установке и обслуживанию

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12
Safety
DISCONNECT FROM THE MAINS ELECTRICAL
SUPPLY BEFORE REMOVING ANY COVERS.
Never attempt to replace the immersion heater other
than with the recommended authorised immersion
heater(s).
DO NOT BYPASS THE THERMAL CUT-OUT(S) IN
ANY CIRCUMSTANCES. Ensure the two male spade
terminations on the combined thermostat and thermal
cut-out are pushed firmly onto the corresponding
terminations on the element assembly.
In case of difficulty contact service support; contact
details available at the back of this booklet.
Electrical Supply
All electrical wiring should be carried out by a
competent electrician and be in accordance with the
latest I.E.E Wiring Regulations.
Each circuit must be protected by a suitable fuse
and double pole isolating switch with a contact
separation of at least 3mm in both poles.
The immersion heater should be wired in accordance
with Fig 08 opposite. The immersion heaters MUST be
earthed. The supply cable should be 1.5mm
2
3 core
HO5 VV-F sheathed and must be routed through the
cable grip provided with the outer sheath of the cable
firmly secured by tightening the screws on the cable
grip.
DO NOT operate the immersion heaters until the
cylinder has been filled with water.
Ensure the thermostat and thermal cut-out sensing
bulbs are pushed fully into the pockets on the element
plate assembly.
Plumbing Connections
Indirect cylinders require the following
pipework connections.
• Cold water supply to and from inlet controls.
• Outlet to hot water draw off points.
• Discharge pipework from valve outlets to
tundish.
• Connection to the primary circuit.
All connections are 22mm compression. However,
3/4”BSP parallel threaded fittings can be fitted to the
primary coil connections if required.
Boiler Selection
The boiler should have a control thermostat and non
self-resetting thermal cut-out and be compatible with
unvented storage water heaters.
Where use of a boiler without a thermal cut-out is
unavoidable a “low head” open vented primary circuit
should be used. The feed and expansion cistern head
above the cylinder should not exceed 2.5m.
Primary Circuit Control
The 2 port motorised valve supplied with the cylinder
MUST be fitted on the primary flow to the cylinder heat
exchanger (coil) and wired in series with the indirect
control thermostat and thermal cut-out fitted to the
unit. (see Fig. 08 below). Primary circulation to the
cylinder heat exchanger (coil) must be pumped; gravity
circulation WILL NOT WORK.
Space and Heating Systems Controls
The controls provided with the cylinder will ensure the
safe operation of the unit within the central heating
system. Other controls (eg. room thermostat and
timer) will be necessary to control the space heating
requirements and times that the system is required to
function.The cylinder is compatible with most heating
controls, examples of electrical circuits are shown in
Figs. 09 and 10 (Page 13). However, other systems
may be suitable, refer to the controls manufacturers’
instructions, supplied with the controls selected, for
alternative system wiring schemes.
Installation -
Auxiliary Heating Coil
Fig. 08: Electrical Connections
L N 1 2 3
Control Housing Details
Element Connections
1.5mm² 3 Core
HO5 VV-F sheathed
cable Indirect control
wiring