Interviewer instructions
223. Heating Heating for flats shall be divided into 3 categories: "central heating", "non-central heating" and "simple heating".
a) Central heating. Flats that are heated by either power station or factory's power plant shall be considered as having "central heating".
b) Non - central heating. Flats which are heated by specially built power plant shall be considered as having "non-central heating".
c) Simple heating. Flats which have a simply stove shall be considered as having "simple heating".
Either one of the above described shall be chosen for the answer for the heating question in the census questionnaire.