Unigas PG70, Manual Of Installation - Use - Maintenance

Page: 16 / 56

CIB UNIGAS - M039191CA
16
Electrical connections
z
Remove the cover from the burner electrical panel.
z
Execute the electrical connections to the power supply terminal board as shown, check the direction of the fan-pump motor (see
next paragraph) and replace the electrical panel cover.
Fan-pump motor rotation
Once the burner electrical connection is accomplished, remember to check the motor rotation.
Motor must rotate in the direction showed on the casing. In the event of wron g rotation, reverse the three-phase supply and check
again the motor rotation.
NOTE:
Burners are provided for three-phase 400 V supply, and in the case of three-phase 230 V supply it is necessary to modify the
electrical connections inside the terminal box of the electric motor and replace the thermal cutout relay.
RESPECT THE BASIC SAFETY RULES. MAKE SURE OF THE CONNECTION TO THE EARTHING SYSTEM. DO NOT
REVERSE THE PHASE AND NEUTRAL CONNECTIONS. FIT A DIFFERENTIAL THERMAL MAGNET SWITCH ADE-
QUATE FOR CONNECTION TO THE MAINS. STRICTLY OBSERVE THE DATA PLATE.
WARNING: The burner is provided with a jumper between terminals 6 and 7; in the event of connecting the high/low
flame thermostat remove this jumper before connecting the thermostat.
IMPORTANT: while connecting electric supply wires to burner’s teminal block be sure that ground wire should be
longer than phase and neutral ones.
Progressive burners
Fig. 11
Probes connection
Fig. 12
Fully-modulating burners
Fig. 13
(**) Probes connection, see Fig. 12