Hoval RoofVent CON-9, Design Handbook

Page: 123 / 280

121
E
F
G
H
I
J
K
L
M
N
Actuator Air-Injector:
Adjusts the supply air discharge direction continuously from vertical to
horizontal
Heating/cooling coil:
evaporator coil/condenser, made from copper tubes with aluminium fins
Access panel:
access to the heating/cooling coil
Plate heat exchanger 2:
with bypass for energy recovery control
ER damper and bypass damper 2:
opposed dampers for regulation of energy recovery, with continuous actuator
Extract air filter:
bag filter with differential pressure switch for filter monitoring
Access panel:
access to extract air filter
ER damper and bypass damper 1:
opposed dampers for regulation of energy recovery, with continuous actuator
with spring return
Weather louvre door:
access to the fresh air filter and to the DigiUnit terminal box
Fresh air filter:
bag filter with differential pressure switch for filter monitoring
Plate heat exchanger 1:
with bypass for energy recovery control, differential pressure switch and
condensate drain
Fresh air damper and recirculation damper:
opposed dampers for switching between fresh air and recirculation opera-
tion, with continuous actuator with spring return
Gravity damper:
closes the bypass during shutdown and thus prevents heat loss
Exhaust air fan:
twin impeller centrifugal fan with maintenance-free drive and variable air flow
rate for defrosting operation
Exhaust air grille:
access to exhaust air fan
Control attachment:
with communication box and expansion valve
Heat pump Daikin ERQ250:
consisting of air-cooled condenser, scroll compressors, working medium tank
with working medium, terminal box and fittings
Access panel:
access to supply air fan
Supply air fan:
twin impeller centrifugal fan with maintenance-free drive
Extract air grille
Condensate separator
Condensate connection
Fig. F2: Components of the RoofVent
®
twin pump
RoofVent
®
twin pump
Construction and operation