Buderus BUZ-Plus 15, Инструкция по установке и эксплуатации, Страница: 23 / 130

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English
CAUTION: For the versions with stop and non-return
valves, these are already pre-installed and sealed with a
tightening torque of 15 Nm (hand-tight). Screwing with
excessive tightening torque destroys the valve screw con-
nection and the O ring. When installing the valve, use a
fixed spanner to prevent twisting.
4.2 Electrical connection
DANGER: Only a qualified electrician is allowed to work on
the electrical connection. Before establishing the connec-
tion, make sure that the connecting cable is dead.
Establish the electrical connection as follows:
(Fig. 7a - Fig. 7e)
Open the connector as follows: (Fig. 8)
4.3 Filling and venting
1. Fill the system
2. The pump rotor space vents automatically after a short
time in operation. This may cause noises. If necessary,
switch off and on repeatedly to accelerate the bleeding.
Dry running for short periods will not harm the pump.
4.4 Set the time (Fig. 9)
The timer of the BUZ-Plus 15 C versions can be set as fol-
lows:
1. Turn the time selection wheel (1) in the direction of the
arrow to set the current time.
2. Switch the timer on (2) and off (3) on the time selection
wheel as required.