CONTROLS AND LIGHTING

Starting the boilerBefore starting the boiler, make sure that: NOTE: Setting to SUMMER mode (Hot water only) Once the cylinder has reached its’ set tem-perature, the boiler will continue to operate in heat- ing mode until the cylinder needs topping-up again. To obtain domestic hot water, open a hot water tap. Hot water always has priority over central heating. The boiler is connected to the electrical supplyand turned on. The boiler gas service cock is open. The pressure gauge reads between 1 and 2 bar.The boiler is now ready to start Turn the OFF/Summer/Winter selector switch (E) tothe ‘Summer’position, Setting to WINTER mode (Heating and hot water) see diagram 1. Turn the OFF/Summer/Winter selector switch (E) tothe ‘Winter’position, Turn the domestic hot water temperature control see diagram 1. (D) to the desired setting, see diagram 1. Turn the central heating temperature control (F) to the desired setting, see diagram 1. The boiler will light and proceed to heat up the in-tegral storage cylinder, after which time, up to ap- proximately 10 minutes depending on the setting of the temperature control, the boiler will stop. Draining and filling Turn the domestic hot water temperature control NOTE: Caution: The boiler is installed as part of a sealed system which must only be drained and filled by a competent person. Heating safety valveCAUTION : Once the cylinder has reached its’ set tem-perature, the boiler will remain off until the cylinder needs topping-up again. To obtain domestic hot water, open a hot water tap. Hot water always has priority over central heating. (D) to the desired setting, see diagram 1. A safety valve with a discharge pipe isfitted to this boiler.The valve Make sure that any external controls are callingfor heat. The boiler will light and proceed to heat up the integral storage cylinder, after which time, up to approximately 10 minutes depending on the setting of the temperature control, the heating system will begin to heat up. MUST NOT BE TOUCHED except by a com-petent person. If the valve discharges at any time, switch the boiler off and isolate it from the electrical supply. Contact your installation/service company. Temperature/pressure relief valveCAUTION: A temperature/pressure relief valve witha discharge pipe into a tundish is fitted to this boiler.The valve MUST NOT BE TOUCHED except by a com-petent person. If the valve discharges at any time, switch the boiler off and isolate it from the electrical supply. Contact your installation/service company.

DRAINING

Protection against freezing If the boiler is to be out of use for any long periods during severe weather conditions, it is recommended that the whole system, including the boiler, be drained to avoid the risk of freezing. If in doubt, consult your servicing company.The ° C. When the temperaturereaches 16 ° C, the boiler stops. Note: This device works irrespective of any roomthermostat setting and only protects the boiler. Always ensure that adequate frost protection is given to the entire system where necessary. SYLVA has a built in frost protection device thatprotects the boiler from freezing. If the boiler is to be left and there is a risk of frost, ensure that the gas and electrical supplies are left connected and that the OFF/Summer/Winter switch is left in the ‘Summer’ or the ‘Winter’ position. The frost protection device will light the boiler when the temperature of the boiler water falls below 6 Cleaning The boiler casing can be cleaned with a damp cloth followed by a dry cloth to polish. Do not use abrasive or solvent cleaners. Boiler casingCAUTION . Do not remove or adjust the casing in anyway, as incorrect fitting may result in faulty operation. If in doubt, consult your installation/ service company.

SERVICING/MAINTENANCE

To ensure the continued efficient and safe operation of the boiler, it is recommended that it is checked and serviced at regular intervals. In particular, the anode fitted to the domestic hot water storage cylinder must be checked at least once a year and replaced as necessary. The frequency of servicing will depend upon the installation conditions and usage but, in general, once a year should be enough. 4