Exhausto VEX5000 Series, Assembly, Installation And Maintenance Instructions

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Flow diagrams
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Abbreviation
s Component Description
BT1 Water: Fire thermostat BT70 Fire thermostat for supply air max. 70°C, positioned in the air
handling unit
BT2 Fire thermostat BT40 Fire thermostat for extract air max. 40°C, positioned in the air
handling unit
CAV Constant airflow Pressure transducer for constant airflow regulation fitted internally
CO
2
CO
2
sensor in room or duct Optional, supplied loose
FP1 Outdoor air filter monitor Monitors the pressure drop across the filter and generates a replace
filter alarm
FP2 Extract air filter monitor Monitors the pressure drop across the filter and generates a replace
filter alarm
M Motor drive for rotary heat exchanger Fitted internally in the air handling unit
M1 Supply air fan B fan impeller and motor with frequency converter
M2 Exhaust air fan B fan impeller and motor with frequency converter
MV3 Motor valve, heating Supplied loose, motor controlled 3-way valve – modulated
MV4 Motor valve, cooling Optional, supplied loose, motor controlled 3-way valve – modulated
OHT Overheating thermostat Thermostat for overheating
RV Rotor monitor Monitors rotor rpm and interval motioning
RVS Control for rotary heat exchanger Variable speed of rotor
SA Motor damper, exhaust air on/off Optional, supplied loose, fitted in exhaust air duct and closes on
standby.
SF Motor damper, outdoor air Supplied loose, fitted in outdoor air inlet and closes on air handling
unit stop
SM3 Motor damper, crossflow heat exchanger Modulated damper motor on interconnected damper
SR Motor damper, recirculation Fitted between the supply air and extract air, and between the
outdoor air and exhaust air
T1 Temperature sensor, outdoor air Positioned in outdoor air section after filter
T2 Temperature sensor, supply air Fitted with 5 m cable and enclosed in the air handling unit, must be
fitted in the supply air duct, min. 1 m from the heating coil
T3 Temperature sensor, extract air Fitted in the extract air spigot for measuring and controlling extract air
temperature
T4 Temperature sensor, exhaust air Positioned in the exhaust air duct from the crossflow heat exchanger
for de-icing protection
T5 Temperature sensor, return water Positioned on the discharge pipe from the heating coil for frost
protection
T6 Temperature sensor, room Positioned in the servicing room in connection with recirculation
VAV1 External pressure transducer, supply air Optional, supplied loose
VAV2 External pressure transducer, extract air Optional, supplied loose
Tabel 11.1 Abbreviations used in flow diagrams