6
1.6 Abbreviations
► DHW: Domestic hot water
► CH: Central heating
► CW: Comfort domestic hot water
► HE: High eiciency
► PHS: Pre Heated Solar water.
► LT: Low temperature (zone).
► HT: High temperature (zone)
► OT: OpenTherm
► RF: Radio frequency
► PC: Personal computer
► NTC: Sensor (Negative temperature coeicient)
► PP: Polypropylene
► CAC: Combination air supply duct and combustible
gas flue system (chimney system)
1.4 Pictograms
CAREFUL / IMPORTANT
Procedures which, if these are not performed
with the required caution, can damage the
product, the surrounding or the environment or
may result in personal injury.
COMMENT
Procedures and/or instructions which, if they
are not followed, can negatively aect the
operation of the boiler.
The following pictograms are used in this installation manual:
1.5 Warnings on the box
SEE
Reference to other manuals
INSTRUCTION (THIS SIDE UP)
Store the appliance upright as indicated on the
box.
INSTRUCTION (FRAGILE)
This is a fragile piece of equipment: Please be
very careful not to drop.
MAX 3 MAX 2
INSTRUCTION (FRAGILE)
This is a fragile piece of equipment: Please
provide a dry storage for the appliance.
INSTRUCTIE (STACK)
No more than three boxes should be stacked on
top of each other.