Design for living excelsior unvented water heaters installation manual 1845 tech manual.Qxd 23/11/05 1:20 pm page 2.
2 technical data & installation instructions for excelsior direct & indirect unvented water heaters with external expansion tank fabdec ltd is one of the worlds leading unvented water heater manufacturers. Your water heater is made from duplex stainless steel, which is one of the toughest and best g...
3 excelsior water heater specifiers guide the benefits of excelsior unvented water heaters ● expansion vessel supplied ● annual inspection as per warranty ● duplex stainless steel ● operates at 3bar, which is higher than some other unvented units ● high quality finish ● has one of the lowest heat lo...
4 standard energy losses the heat loss of each excelsior unvented unit while maintaining the temperature of the stored water at 65 degrees celsius. (see performance table below). 1) tests carried out by bba. Slight variations may occur with changes to water mains supply pressure excelsior performanc...
5 connecting the water supply ● pipework is not supplied ● all pipework should be installed using good plumbing practice. We recommend 22mm mains cold water supply is used. ● install a stop cock valve before the cold water inlet assembly on the incoming mains water supply so the unit can be isolated...
6 secondary circulation connection diagram fig.3 2 * 2 port (s-plan) valve system guidance layout only fig.4 1845 tech manual.Qxd 23/11/05 1:23 pm page 7.
7 wiring all electrical wiring should be carried out by a registered electrical contractor and must conform to the latest iee wiring regulations do not switch the power on until the unit has been filled with water and all wiring has been earthed, see fig. 4 and 5. Fitting immersion heaters these are...
8 tundish the tundish supplied must be fitted visible to the occupier. The discharge pipe must be 22mm copper pipe. Regulations do not permit more than 3 x 90-degree bends between the excelsior unit and the outflow. Between the temperature & pressure relief valve and the first 90-degree bend there m...
9 g3 requirement ‘…there shall be precautions…to ensure that the hot water discharged from safety devices is safely conveyed to where it is visible but will not cause danger to persons in or about the building.’ g3 guidance section 3.9 the discharge pipe (d1) from the vessel up to and including tund...
10 problem solving no water in tap from the excelsior unit check that mains supply is on. Check that the line strainer is not blocked check that the combination valve has been fitted so that the arrow on it faces in the direction of the water flow. If the water at the hot tap is cold boiler (indirec...
11 guarantee the excelsior duplex vessel carries a full 25-year cylinder guarantee against faulty materials or manufacture provided that: • it has been correctly installed as per the installation manual and all the relevant regulations and codes of practice in force at the time. • it has not been mo...
Fabdec ltd grange road ellesmere shropshire sy12 9dg uk uk head office fabdec ltd grange road ellesmere shropshire sy12 9dg uk tel: + 44 (0) 1691 627200 sales/service tel: + 44 (0) 1691 627210 fax: + 44 (0) 1691 627222 email: excelsior.Sales@fabdec.Com website: www.Fabdec.Com affix stamp here 1845 t...
