3.6 ELECTRICAL CONNECTIONS Note: This Appliance Must Be Earthed Optional integral single channel controls are available if required. Note: Only use the Alpha single channel controls. Do not fit any two channel controls. Programmer clock (optional) Fig. 3.3 3.7 DATA BADGE ANNOTATION NOTE: Technical data is provided on the boiler data label and in Section 3.1. Md.............................Model Cod. Md ....................Model code Sr N o .........................Serial number CHK ..........................Check Cod. PIN ...................PIN code Type ..........................Type of installation (ref. CEN TR 1749) Q nw min. .....................DHW minimum heat input Q n min.
.......................CH minimum heat input Q nw max. ....................DHW maximum heat input Q n max. ......................CH maximum heat input P n min. .......................Minimum heat output P n max.
.......................Maximum heat output PMS ..........................Maximum system pressure PMW .........................Maximum DHW pressure D ...............................Specific flow rate TM ............................Maximum operating temperature NO x Class .................NO x Class CONDENSING .........Condensing boiler 8 Alpha E-Tec 28 and 33 - Technical Data R 1 to clock 3 link Bl J2 on PCB Remove connect 4 2 Colour Code R X4 on PCB Bk Black Bl Blue Br Br Brown J2 on PCB G Green Gy Grey G/Y Green/Yellow R Or Orange P Purple Bl Bl R Red Br G/YBk Y Br R Or Y W White Bk Bk Or Y Y Yellow Bl L N A B 5 6 1 2 Bk R 40 41 38 39 38 48 (L) (N) (L) (N) For testing 44 R only J1 on PCB B4 External sensor (optional) Br Bl G/Y B9 DHW inlet sensor (optional) or Cylinder sensor (optional) Mains Supply B4 220 V ~ 50 Hz Room B9 When an Alpha Climatic control is connected Remove link to thermostat Alpha to terminals 41 and 44 remove the links between connect 220 V (optional) Climatic Control terminal blocks 1 and 2 room thermostat (optional) When an Alpha Climatic control is connected to terminals 41 and 44 remove the links between terminal blocks 1 and 2 Remove link to connect 220 V room thermostat 5 6 1 2 L N A B Md Cod.
Md Sr No Co d. PIN Type Qnw/Qn min. Qnw/Qn max. Pn min. Pn max. PMS PMW D TM NOx Class CONDENSING