THERMEx Sierra Manual De Instrucciones página 5

Connection to the water supply line shall be carried out in accordance with Fig. 1
using copper, plastic pipes or special flexible sanitary wiring. Do not use any used flex-
ible wiring. It is recommended to supply water to EWH through filter installed on the
cold water main (not included in the scope of supply).
Do not use used flexible feed pipes. Do not operate the EWH without
safety valve or with valve made by other manufacturers.
Figure 1. EWH connection diagram to water supply
Figure 1: 1 – EWH, 2 – hot water pipe, 3 – cold water pipe, 4 – drain valve (not in
the scope of supply), 5 – safety valve, 6 – drainage (not in the scope of supply), 7 – feed
pipe, 8 – shut off valve when EWH operation, 9 – cold water main, 10 – hot water main,
11 – cold water shut-off valve, 12 – hot water shut-off valve, 13 – protective cover, 14
– exhaust pipe of the safety valve, 15 – handle for opening pressure relief valve, 16 –
control knob.
After connecting EWH make sure that cold water shut-off valve is open and hot
water shut-off valve (Fig. 1, p. 8) is closed. Open cold water tap in EWH (Fig. 1, p. 11),
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