Ideal Boilers CF3/100 Installation And Servicing Manual

Ideal Boilers CF3/100 Installation And Servicing Manual Manual pdf 7 page image

7Mexico Super CF 3/100, 3/125, 3/140 - InstallationGENERALThis device is not a substitute for an independently mountedcarbon monoxide detector.In cases of repeated or continuous shutdown a competentperson should be called to investigate and rectify the conditioncausing this and carry out an operational test after eachintervention on the device. Only the manufacturer's original partsshould be used for replacement.AIR SUPPLYDetailed recommendations for air supply are given in BS.5440:2.The following notes are for general guidance:1. The room or internal space in which the boiler is installedMUST have, or be provided with, a permanent air vent. Thisvent MUST be either direct to outside air or to an adjacentroom or internal space which must itself have, or be providedwith, a permanent air vent at least the same size direct tooutside air.The minimum effective area of the permanent air vent(s) arespecified below and are related to maximum rated heat inputof the boiler (see Table 3).The air vent(s) must NOT have provision for closing oradjustment and should be sited to avoid risk of accidentaldamage or blockage.If other methods of ventilation are envisaged, British Gasshould be consulted before proceeding.2. If the boiler is to be installed in a cupboard or compartment,permanent air vents are required (for combustion, fluedilution and cooling purposes) in the cupboard /compartment, at both high and low levels to ensure safe andefficient combustion and ventilation.The air vents may either communicate with room/internalspace (appropriately ventilated) or be direct to outside air.The minimum effective areas of the permanent air vents,required in the cupboard / compartment, are specified asfollows and are related to maximum rated heat input of theboiler (see Table 4).Notes.a. Both air vents MUST communicate with the same room orinternal space or MUST be on the same wall to outside air.b. In siting the air vents care must be taken to avoid thefreezing of pipework.c. Where cupboard / compartment air vents are open to a roomor internal space, the room or internal space MUST itself beprovided with a permanent air vent, as previously specified.d. The cupboard / compartment air vents must NOTcommunicate with a bedroom, bed-sitting room or a roomcontaining a bath or shower.FLUE INSTALLATIONThe flue must be installed in accordance with therecommendations of BS. 5440:1.The following notes are intended for general guidance:1. The cross-sectional area of the flue, serving the boiler,MUST NOT be less than the area of the flue outlet of theboiler.If flue pipe is to be used it MUST NOT be less than thediameter of the flue outlet connection on the boiler.2. Flue pipes and fittings should be constructed from one of thefollowing materials:a. Aluminium or stainless steel.b. Cast iron, coated on the inside with acid resistant vitreousenamel.c. Other approved material.3. If twin walled flue pipe is used it should be of a typeacceptable to British Gas.4. If a chimney is to be used it should preferably be one that iscomposed of, or lined with, a non-porous acid resistantmaterial.Notes.Chimneys lined with salt -glazed earthenware pipes areacceptable if the pipes comply with BS.65 and BS.5440:1.A flue pipe constructed from one of the materials listed in2 a-c should form the initial connection to the lined chimneys.Where a chimney is to be used that is not composed of, orlined with, a non-porous, acid resistant material it should belined with a stainless steel flexible flue liner which complieswith BS.715.5. Before connecting the boiler to, or inserting a liner into, a fluethat has been previously used then the flue MUST bethoroughly swept clean of any soot or loose material. If aregister plate, restrictor plate or damper etc., is fitted in theflue then it MUST be removed before connecting the boilerto, or inserting a liner into, the flue.6. The flue should terminate in accordance with the relevantrecommendations given in BS.5440:1.7. The flue MUST be fitted with a terminal (or ridge tile up to 5"flue diameter). The terminal shall be of a type which hasbeen tested and found satisfactory by British Gas. Thisterminal must NOT be installed within 600mm (24") of anopening window, air vent or any other ventilation opening.8. The chimney / flue lining MUST be sealed at both the topand the bottom.IMPORTANT. It is absolutely ESSENTIAL to ensure, in practice,that the flue discharge is in a downdraught- free zone and thatproducts of combustion discharging from the terminal cannot re-enter the building or any other adjacent building throughventilators, windows, doors, other sources of natural airinfiltration or forced ventilation / air conditioning systems.TTB DOWNDRAUGHT THERMOSTATThis appliance is fitted with a TTB downdraught thermostat foradded safety and protection. If this thermostat should operateand switch off the appliance it is because the flue is subject todowndraught, probably as a result of adverse wind conditions .The TTB is an automatic device which will reset once the windconditions have returned to normal, subject to a built-in resetdelay in excess of 10 minutesThe TTB is an important safety device and must not be put outof action or interfered with in any way.Table 3Boiler size CF 3/100 CF 3/125 CF 3/140Effective 146 189 211areacm 2 (in 2) (23) (30) (32)