Parkray CHEVIN 20DB CVWCHI08FM, Инструкции для

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Installation Of Heating And Hot Water System
We strongly recommend that a knowledgeable, experienced and qualified plumbing and heating engineer is
responsible for the design and installation of the heating and hot water system. Hunter Stoves Ltd cannot accept
responsibility for any consequential loss, however caused, due to under or over specification of the appliance in any
installation.
Do Not – Under any circumstances connect the stove to a sealed (pressurised) heating system or unvented hot
water cylinder.
Do Not – Link the stove into a heating or hot water system with an existing boiler without the use of suitable
equipment such as a neutralizer. When fitting this type of system,
the neutralizer manufacturer’s
instructions must be followed.
Do – Fit an open cold feed and expansion cistern with separate cold feed and vent pipes. The cold feed and
vent pipes must be unvalued. The open vent pipe should have a diameter of 22mm and rise continuously
from the boiler. It is common practice to form the vent pipe from an extension of the primary flow (see
diagram).
Do – Connect the stove to a double feed, indirect hot water cylinder via 28mm copper flow and return pipe
work, rising continuously from the boiler to the cylinder. The cylinder and heat leak radiator must be
sited higher than the stove.
Semi pumped systems should be used on heating and hot water systems with gravity circulation to the hot water
cylinder and one unvalved 2 KW radiator to act as a heat leak when the central heating is switched off.
All four tappings on wraparound boilers should be used for systems incorporating separate gravity and pumped
heating loops. Each flow and return should be taken from diagonally opposite sides of the boiler.
If a common flow and return is used, these should also be taken from diagonally opposite sides of the boiler, and
plugs inserted into the sockets not used.
Systems using a common flow and return to the boiler should incorporate an injector tee on the primary return
connection from the central heating pump (see diagram).
A HIGH LIMIT thermostat should be fitted to the gravity flow pipe close to the boiler and set at 90°C. This should
override any pump control, switching the pump on and dissipating any excess heat around the radiator circuit.
To prevent boiler corrosion due to condensation it is necessary to maintain the return water temperature above
45°C. This can be achieved by the use of a LOW LIMIT thermostat on the return pipe from the hot water cylinder,
close to the boiler. The thermostat should make on temperature rise, preventing the circulating pump from
operating until the gravity circuit is up to temperature.
Wiring Diagram for general guidance only
All electrical work must be carried out by a
competent electrician in accordance with the
rules in force and the instructions provided by
the circulating pump and heating controls
manufacturer
Central Heating Control