DencoHappel ZGF.1E series Operation Manual page 55

Flex-Geko Fan Coil Unit
5.5.3 Coil connections with 4-pipe system (refrigerant cooling, warm water heating)
Without expansion valve/without heating valve
Wall unit
Fig. 5-16: Wall and ceiling unit, 4-pipe system, without expansion valve and heating valve, refrigerant and heating
circuit connections
With expansion valve/without heating valve
Wall unit
Fig. 5-17: Wall and ceiling unit, 4-pipe system, with expansion valve, without heating valve, refrigerant and heat-
ing circuit connections
PR-2011-0115-GB • Subject to modifications • R4-12/2015
Heat exchanger connections for warm water circuit are performed with 1/2" inter-
nal screw thread with a flat gasket. The position of supply and return lines
depends on the field-provided valve type and pipework.
Liquid connection
Pos. 1:
Suction gas connection
Pos. 2:
Heat exchanger connection for heating circuit
Pos. 3:
Ceiling unit
Ceiling unit
Safety and User Instructions
55