OPERATING INSTRUCTIONS
HCV & HCVR Evaporative Cooling & Gas Heating
Page 8 of 26
OPERAT IN G IN STRUCT ION S
W
ALL
C
ONTROL
O
PTIONS
The HCV can be controlled a variety of ways.
Standard supplied control is a 5 switch wall mount gang switch.
1.1
Remote selector switch panel functions.
The switch panel consists of five individually marker rocker switches and a warning lamp. The
switch panel is specially designed for use with HCV units, and gives a selection range of ‘OFF, LOW
VENT, HIGH VENT, LOW COOL, HIGH COOL and HEAT.’ The switch marked ‘PRESS’ is used to reset
the appliance when the red warning light is alight. Switch settings for unit control are as follows:-
OFF
FAN SWITCH OFF, OTHER SWITCHES ANY POSITION.
LOW VENT
FAN SWITCH ON, COOL SWITCH OFF, HEAT SWITCH OFF, HIGH-LOW
SWITCH IN LOW POSITION
HIGH VENT
FAN SWITCH ON, COOL SWITCH OFF, HEAT SWITCHOFF, HIGH-LOW SWITCH
IN HIGH POSITION.
LOW COOL
FAN SWITCH ON, COOL SWITCH ON, HEAT SWITCHOFF, HIGH-LOW SWITCH
IN LOW POSITION.
HIGH COOL
FAN SWITCH ON, COOL SWITCH ON, HEAT SWITCH OFF, HIGH-LOW SWITCH
IN HIGH POSITION.
HEAT
FAN SWITCHON, COOL SWITCH OFF, HEAT SWITCH ON, HIGH-LOW SWITCH
IN LOW POSITION. Note that heating will not operate with high-low switch in
high position.
1.2
Optional Rotary remote selector switch functions.
Hi-Cool
Evaporative cooling, dampers open, maximum air delivery
Lo-Cool
Evaporative cooling, dampers closed to preset position, corresponding
decrease in air volume.
Hi-Vent
Fresh air ventilation, dampers open, maximum air delivery.
Lo-Vent
Fresh air ventilation, air quantity reduced as for ‘Lo-Cool’.
Heat
Fresh air ventilation together with heating to maintain comfort heating to an
area whilst providing required air changes of fresh air per hour.
These switches are specially designed and manufactured for Aira HCV units for special applications.
They give an operating range of Hi-Vent, Lo-Vent, Hi-Cool and Heat.
Note: Other Controls can be designed and or supplied on request for specialist applications. VSD
drive can be supplied loose (Programing by others) or shielded cable installed. Usually a VSD drive
is fitted to a single speed motor.
