HEVAC Endeavour Preset For Night Purg Instruction Manual
- May 15, 2024
- HEVAC
Table of Contents
TO VIEW FULL ENDEAVOUR
OPERTIONAL MANUAL CLICK
ON THE QR CODE
Endeavour Preset For Night Purg
https://hevac.com.au/wp-content/uploads/2024/03/ENDEAVOUR-V3-FULL-
instructions.pdf
ROOM SENSOR
OUTDOOR TEMP. SENSOR
ENDEAVOUR PRESET FOR BASIC NIGHT PURGE VENT OPERATION ONLY, WITH ALL NORMAL
TIME & TEMPERATURE CONTROLLED RELAY FUNCTIONS DISABLED.
DURING A PRESET MONITORING TIME FOR POSSIBLE NIGHT PURGE OPERATION (TYPICALLY
4 -6 am) IF THE ROOM TEMPERATURE IS MEASURED TO BE ABOVE THE PROGRAMMED
SETPOINT AND THE OUTSIDE AIR TEMPERATURE IS COOLER THEN THE ROOM TEMPERATURE,
FORCED FAN VENT PURGE OPERATION WILL COMMENCE ( CLOSING TERMINALS 5 & 8)
WHILST ALL THESE CONDITIONS ARE MET.
THE MAIN SWITCH (TIME SWITCH 1) EX HEVAC WILL HAVE ITS USUAL ON & OFF DAY TIME
SWITCHING EVENTS DISABLED , BUT CAN BE REINSTATED IF UN-CONTROLLED FAN
OPERATION IS STILL REQUIRED DURING NORMAL OCCUPANCY HOURS FOR VENTILATION
REQUIREMENTS.
ALSO A SHORT DURATION TIMER OPERATION CABN BE ADDED TO START FAN OPERATION BY
CONNECTION OF A NORMALLY OPEN PUSH BUTTON TO TERMINALS M & D2 (or X1).
WITH THIS SETUP EX HEVAC FOR NIGHT PURGE ONLY OPERATION ONLY THE NIGHT PURGE
TIME SWITCH WILL CAUSE FAN OPERATION FROM THIS CONTROLLER UNLESS OTHERWISE
PROGRAMMED.
THE AUXILARY TIME SWITCH IS STILL AVAILABLE FOR AN INDEPENDENT TIME SWITCH
OPERATION CONTROLLING ONE OF THE CONTROLLERS RELAYS PROGRAMMED FOR THIS
PURPOSE.
Technical Data
General Specifications
| Operating Voltage | 12 to 24 Volts AC or DC |
|---|
Power Consumption
At 24vDC Volts
At 24vAC Volts| MAX. 150mA
4 VA
Switching Capacity of Relays
Voltage
Current| AC 1….250 Volts
8.0 (2.5) Amps
Set point Setting Range| 1-99 oC in 0.1 oC Increments
Relay Switch ON Points
(Dead band)
Relay Hysteresis
(Switching Differential)
Relay to Energise Time Delay| 0.1-19.9 oC
0.1-9.9 oC
0.1-42 Minutes
Y1/Y2 Output Voltage Range| 0-10VDC
( NOTE MINIMUM & MAXIMUM Y OUTPUT VOLTAGE USER ADJUSTABLE )
Y1/Y2 Start Point (Dead band)
Y1/Y2 Range
(Proportional Band)
Y1/Y2 Integral action
(P+I triggers >10% P output)| 0-19.9 oC
0.5-25 oC
Off-60 minutes
ANALOG INPUTS
X1 : Main Temperature Sensor Input configurable (with jumper & software) as
Active (0-10vdc OR 4-20mA ~0 to 100c (adjustable) or Passive (4.2k@22c).
X2 : Remote Set point configurable (with jumper & software) as passive using
10K potentiometer (18-25c Range) or 0-10vdc (top end range configurable).
X3 : Outside temperature sensor configurable (with jumper & software) as
Active (0-10vor 4-20mA ~0-100c) or Passive (4.2k@22c). Optional use for O/A
S/P reset.
X4 : Universal input configurable (with jumper & software) for auxiliary
control loop to control spare relays or analogue outputs or humidity
measurement induced reset of the controllers operating temperature setpoint.
X7 : Room or R/A Duct CO2 Sensor input to override economy cycle operation or
used to control spare internal relays (R1-4) for on/off CO2 control
interlocks.
Communication :
Terminal’s X5 & X6 configurable for RS485 MODBUS communication.
X7 can be set to ground (via an internal 100 ohm resistor) for use as a comms
shield connection if not used as a CO2 sensor connection.
Output Indication:
| Relay On/Off Status | 5 x Red LED |
|---|---|
| LCD Display | 2 x 16 character LCD |
| Display Resolution | 0.1 Increments |
Environmental Conditions
Operation|
---|---
Ambient Temperature| 0…45oC
Humidity| < 85 % RH (Non Condensing)
Storage and Transport|
Ambient Temperature| -5…65oC
Humidity| < 90 % RH (Non Condensing)
Product Standards
COMPLIES TO ALL RELEVENT AUSTRALIAN STANDARDS including 6mm segregation
between high & low voltage connections
Weight
| Including Packaging | 600 grams |
|---|
Housing
Colour| Grey
Material| ABS POLYCARB
UV Stabilised| YES
Fire Retardant| YES
Size| L105mm x W105mm x D60mm
Mounting Method| 35mm Din Rail Mountable
Terminal Designations
X1 Main Temperature Sensor Input (Passive or Active)| M Common sensor &
signal ground
---|---
X2 Remote S/P input (Passive or Active)| D1 Manual System OFF
X3 O/A sensor input (Passive or Active)| D2 Manual System ON &/or AHR
trigger input
X4 Auxiliary analogue input (Passive or Active)| D3 External FAULT I/P (for
indication)
X5 MODBUS RS485 – A Terminal| D4 External On/Off status I/P for BMS
monitoring
X6 MODBUS RS485 – B Terminal| E & M future Expansion module local comms.
X7 CO2 sensor (default) or MODBUS SHIELD (GND)|
12-24 Volt Supply Neutral
(internally connected to terminals M)| 5 Relay 3,4 & 5 Common
---|---
+ 12-24 Volt AC or DC Supply Active| 6 Relay 3 Normally Open
Relay 1 Normally Open| 7 Relay 4 Normally Open
Relay 1 & 2 Common| 8 Relay 5 Normally Open FAN / T.SW.1
Relay 1 Normally Closed| M Signal ground
Relay 2 Normally Open| Y1 Analog Modulating Output 0-10 vDC
| Y2 Analog Modulating Output 0-10 vDC
USER INTERFACE
The controllers face plate has four push buttons to access & edit controller settings.
“ENTER” ACTS AS THE SAVE OR MENU OPEN BUTTON
“ESC” ACTS AS THE EXIT OR JUMP BACK TO PREVIOUS MENU BUTTON
“UP & “DOWN” BUTTONS ADJUST SETPOINT, SCROLL MENUS & TO EDIT VALUES.
The controller has a backlit (16×2) LCD screen & 5 red LED’s to give
controller input & output status. The LCD screen will automatically cycle
through relevant screens displaying applicable information as per the users
programmed use of the controller. The screen can alternatively be set to not
scroll and manually moved to next display by pressing the escape button.
To access the menu list as shown on page 7, press the ENTER button & use the
UP & DOWN arrow buttons to scroll through the menus, pressing ENTER to open a
particular menu to edit.
The LCD screens will automatically cycle through each relevant display unless the display is set to not scroll.
SET AUXiliary TIME SWITCH (2)
The controller’s independent Auxiliary Time Switch (2), if enabled for use,
can be assigned to any spare relay not already used, and is assigned to a
spare relay in the Relay Programming Menu. The Auxiliary Time Switch is
basically intended as a simple auxiliary time switch for controlling other
equipment not directly associated with temperature control ie : toilet exhaust
fans etc, and is programmed using a more conventional time switch technique
with programmable “ON” time events followed by “OFF” time events for the
relevant days of the week. Note : This Auxiliary time switch has only two sets
of ON & OFF settings (paired events) which would typically cover the separate
on & off times for week days and weekends. To edit settings, press the fascia
button labeled “ENTER” and scroll down through the menu tree until “SET AUX
TIME SWITCH (2) “is displayed. Press the “ENTER” button to open this menu. If
previously unused the 1st event (01) will display “UNUSED”.
Press the ENTER button to start editing. Press the UP button to change this
event to “ENABLED” which is the 1st fixed “ON” event. Press ENTER which will
then display an LCD screen to ‘enable’ the required days , use the UP / DOWN &
ENTER buttons to
sequentially set “Y” to all days that are to be enabled for this 1st (same)
“ON” time ( leave as “–” for disabled days) .After Sunday is entered the
display will jump to the “ON” time setting screen – use the UP / DOWN buttons
to set the “ON” time, then press ENTER. The controller will then ask should
this Auxiliary Time Switch be overridden (to OFF) by the programmed holidays ?
(as set in the controllers “HOLIDAY” assignment menu), set “YES” or “NO” using
the controller’s UP / DOWN buttons and press ENTER. The display returns to
this event screen (01). Press the DOWN arrow button to move to the next event
screen (02) which is the 1st fixed “OFF” event setting screen, which is in
respect to the previous “ON” setting -press ENTER. IF not already “ENABLED”
press the DOWN arrow button to ENABLE this event, Press ENTER. Repeat the Y /
— setting for each day of the week which should be set to match the previous
“ON” settings, then set the common “OFF” time for these days, press ENTER.
Press the ESC button to exit Time Switch 2 programming if only one common
on/off times for the week is required or press the DOWN arrow button until
event (03) is displayed which is a 2nd (fixed as) ‘ON’ setting ~ Repeat the
procedure per events (01) & (02) to set the ON (03) & OFF (04) times & days
for these events. The Auxiliary Time Switch is now programmed , press “ESC” a
few times to exit out to the main running screen.
NIGHT PURGE SETUP
With this feature enabled it is possible to setup a low running cost building
night time ventilation purge cycle, to vent built up heat from within the
building with cooler outside air in order to reduce the cost of mechanical
cooling during occupancy hours at startup. During the user programmable
enable times, if the room temperature is above the main set point and the
measured outdoor temperature is cooler by an adjustable amount to the room
temperature, this software will cause the supply fan (connected to relay 5)
to energise & the modulating motorised economy cycle dampers (connected to
analog output Y1) to reposition to the full fresh air mode. These output
states are maintained until the room temperature drops to a settable
temperature difference in relation to the outside air temperature or / & the
O/A temperature rises above the room temperature setpoint, or the enable time
ends.
“On Temp Diff ” is the amount of temperature that the outside air has to be
cooler then the room temperature before purge mode is allowed to trigger night
time purge ventilation mode.
“Off Temp Diff ” is the temperature difference to the room temperature for
purge cycle to turn off. This cycle can repeat during the programmed night
purge period, But always subject to the room temperature being above the
normal operating control setpoint.
The purge cycle ends regarless at the programmed end operating time.
TYPICAL CONNECTIONS
