HEVAC RTC4v User manual

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HEVACCONTROLS
RTC4vPROGRAMMABLE ROOM THERMOSTAT C/W TIME SWITCH
FEATURE:
2Stage heat /2 stage cool with 7 day time switch control
Large LCD display with backlight, continuous backlight option
Preset for quick install/operation as 2 stage heat pump controller Mon-fri 8:00-17:30
Simple menu driven programming
The running screen displays the set Point, Room temperature and current Time
Auto orManual heat / cool change over
Permanent user settings retention during power loss, no batteries are required,
Run times and temperature set points programmable for each day plus day omit
24v and or battery powered
Permanent ON override, Vacation mode &After hours Run UNTIL timer
Intelligent optimised morning start option
Optional Air filter change indicator selectable
Optional UV light change indicator selectable
APPLICATION:
The RTC4v room thermostat is ideal for the control of single or twin compressor air conditioning units in
commercial air conditioning applications. For easy installation and quick start up the thermostat comes
preset to control a typical 2 stage reverse cycle unit with a preset time schedule to operate Monday
to Friday from 8:00 to 17:30 with the heating (off) set point set to 21.5 degrees and cooling (off) set
point at 22.5. Note: the stage "turn off" temperature is the displayed operating set point. All trigger
times and temperatures for each day are easily adjustable via a user friendly menu.
Domestic application model RTC4c is available with typical “Wake, Leave, Return & Sleep type program.

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KEYBOARD, DISPLAYAND SWITCH DESCRIPTION
Typical running screen

Figure 4
SPECIFICATION:
Power Supply ……………………… Dual Power 24VAC (18-30VAC,50/60Hz)
orBatteryPowered
Terminal Load………………………… 1.0 A per terminal, 2.0A maximum total load
Set point Temperature Range…………. 41℉ to 95℉(5℃ to 35℃)
Operating Ambient……………………. 32℉to 122℉(0℃to 50℃)
Operating Humidity…………………... 90% non-condensing max
Shipping Temperature Range…………. 14℉to +140℉(-10℃to 60℃)
Dimensions……………………………. 5.9 inch×4.5 inch×1.2inch(150mm×115mm ×32mm)
Color……………………………………White
Front Panel 2 AA Batteries
Base
INSTALLATION
1.Pull the thermostat body off the thermostat base. Forcing or prying on the thermostat will cause
damage to the unit.
2. Place base over hole in wall and mark mounting hole locations onwallusing base as a template
3. Move base out of the way.Drill mounting holes. If you are using existing mounting holes and the
holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to
secure the base.
4. Fasten base snugly to wall using mounting holes shown in Figure 3 and two mounting screws.
Leveling is for appearance only and will not affect thermostat operation.
5. Connect wires to terminal block on base using appropriate wiring schematic (See Figure 5)
6. Carefully line the thermostat up with the base and snap into place.
Batteries are optional (to provide backup power) if your thermostat was wired to run on AC power when
installed. 2 “AA” alkaline batteries are included in the thermostat at the factory with a battery tag to
prevent power drainage.
Battery replacement
Install fresh batteries immediately when the Low Batt warning begins flashing. The warning flashes
about 60 days before batteries are depleted. Even if the warning does not appear, you should replace
batteries once a year, orbefore leaving home for more than 1 month
Toreplace batteries, set system to OFF,remove thermostat from wall and install the batteries in the rear
along the top of the thermostat. (See figure 4)
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WIRING DIAGRAM
FIGURE 5
WIRING GUIDE
ASPERDEFAULT“HP2”PROGRAM
S2
C/S1
Y
B
O
Y2
L
RH
RC
G
A
UX
E
S2
Y
Y2
L
RH
RC
G
W
W2
HEAT PUM
P
CONVENTIONA
L
C/S1
***WIRE PER THIS***
TO MATCH DEFAULT
HP2 PROGRAM
RC 24v Active (for cool) I
RH 24v Active (for heat) I
C/S1 Neutral I
G Fan O/P I
B Rev. Valve (for Heat mode) I
Y Compressor I
RC 24v Active (for cool)
RH 24v Active (for heat)
C/S1 Neutral
G Fan O/P
W Heat O/P
Y Cool O/P
HEAT PUMP UNITS (HP2 PROGRAM) HEAT/COOL APPLICATIONS (2H PROGRAM)
1 STAGE
RC 24v Active (for cool) I
RH 24v Active (for heat) I
C/S1 Neutral I
G Fan O/P I
B Rev. Valve (for Heat mode) I
Y Compressor 1 I
RC 24v Active (for cool)
RH 24v Active (for heat)
C/S1 Neutral
G Fan O/P
W Heat 1 O/P
W2 Heat 2 O/P
Y Cool 1 O/P
Y2 Cool 2 O/P
2 STAGE
Y2 Compressor 2 I
I
----------------------------------------------------------------------------------------------------------------------------------------------
FACTORY DEFAULT

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Screen lock
To prevent tampering, the screen can be partially or fully locked. Configuration menu item 24 explain the
way to partially or fully locked the screen
Special feature
Intelligent Recovery: See configuration menu item 6- Intelligent Recovery operation.
Compressor protection: See configuration menu item 10- Select compressor lockout delay
Heat Pump Temperature Lockout: See configuration menu item 21-Heat pump compressor lockout
temperature
Press MENU for displaying main menu button.
Press SET TIME button to enter to the
clock-setting mode. Press the day to set current
day of the week. Press △or▽to adjust the
minutes or hours. Press NEXT STEP to shift
between setting minutes and setting hours.
Press DONE to save & exit (or press CANCEL
to exit without changing the time).
Adjust program schedules
Press menu button to display main menu
buttons. Press SET SCHED to enter
Programming schedule mod
Set current day
of the week
Set current minutes
or hours
Press NEXT STEP to
shift from setting minuts
to setting hours
Press DONE to
confirm and exit Press CANCEL to
cancel current setting
and exit
Press SET SCHED
to set program
PROGRAMMING
This thermostat comes factory set with a typical commercial default operating
monday to friday program and with time and date set. (see page 10.)
To adjust these default settings if neccessary follow the procedure below.
To Set Current Time clock and Day of the week

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Both HEAT & COOL temperature set
points & RETURN &LEAVE times
have to be set for each day.
This can be done for each day
individually or in a block of days by
selecting more than one day for
programming.
1.) Select HEATinthe SYSTEM
button window,
2.) Select the group of days that require
the same RETURN time & HEATset
point.
3.) Press the RETURN button and
the existing start time and setpoint
will appear, alter temp & time as
required. 4.) Press the LEAVE button
and adjust finish timeas required.
5.) In the SYSTEM selection window
select COOL then repeat steps 2-4.
6.) Press the DONE button to exit
programing.
Toviewthe schedule press the
VIEW SCHED button
And then select the day to be
viewed. Press the RETURN or LEAVE
buttons in either HEATor COOL mode
to see the program schedule for thatday.

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OPERATING YOUR THERMOSTAT
Press SYSTEM option
to your requirement
Press FAN option
to your requirement
Press DONE to save
and exit
Press CANCEL to
disregard current
setting and exit
During operation if the set point is changed this automatically puts the thermostat into a temporary
"RUN UNTIL" mode. The thermostat is locked into the heating or cooling mode it was in when the set
point was altered and will operate in only this mode (heat or cool) and cycle the output per the
temperature demand with this temporary set point until the "RUN UNTIL" time expires (which is
easily altered with the time adjust buttons. The screen will display the system is operating in this
temporary mode. To return to the program schedule, press the "RUN SCHED" button.
Choose the Fan Setting (Auto or On)
Fan set to “Auto” causes the fan to turn on only when heating or cooling is on (andthe thermostat is
running in the “RETURN” time period).The fan, heating & cooling remain off during the “LEAVE” time
period. This is the typical selection for domestic applications.
Fan set to “On” causes the fan to run continuously during the “RETURN” time period as required to meet
ventilation standards in commercial applications. The fan, heating & cooling remain off during the
“LEAVE” period.
Tochoose the System mode Setting (Auto, Cool, Off, Heat, Emer)
Press the SYSTEM button to select:
Auto: Auto Changeover is used in areas where both heating and cooling may be required on the same day
Cool: Thermostat controls only the cooling system
Off: thermostat outputs are held permanently off
Heat: Thermostat controls only the heating system
Emer: Emergency heat is available only when the thermostat is configured in HP1 or HP2 mode.
When SYSTEM button set to AUTO, the thermostat automatically selects heating or cooling depending
on the indoor temperature. Heat and cool turn on points operate with a factory set minimum gap of 2
degrees (configuration menu item 5) to stop the system jumping from one mode to the other. The auto
change over in operation requires the measured temperature to be at least 2 degrees closer to the other
mode turn on point for at least 5 minutes before mode change over can occur. .
TEMPORARY SETPOINT CHANGE OR & "RUN UNTIL"AFTER HOURS MODE

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Manual Operation for Non-programmable Thermostats
Press the SYSTEM button to select Heat or Cool and Use the △or▽buttons to adjust the temperature to
your desired setting.After selecting your desired settings you can also press the SYSTEM button to select
AUTO to allow the thermostat to automatically change between Heat and Cool ifAUTO changeover
option is set to 1. (See configuration menu item 5)
Manual Operation for programmable thermostats
This operation applies only when Program option (See configuration menu item 14) is set to
programmable.
Permanent Hold Override
Press HOLD to permanently adjust the
temperature. This will turn off the program
schedule.
Whatever temperature you set will be maintained
24 hours a day, until you manually change it, or
press RUN SCHED to cancel “Hold’and resume
the program schedule.
Vacation Hold Override
This feature can suspend the program schedule for
extended period of days.
Press HOLD for 5 seconds.
Press △or▽to set the temperature you want,
then press △or▽to set time of day you want to
schedule to resume when you return.
Whatever temperature you set will be maintained
24 hours a day for the number of days you select.
After these numbers of days have elapsed, the
previously programmed schedule will resume at
the time you set.
Press HOLD
Press RUN SCHED
to resume program
schedule
Adjust temperature
Press HOLD
for 5 seconds
Press RUN SCHED
to resume program
schedule
Press RUN SCHED
to resume program
schedule
Adjust temperature
Press to select number
of days

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If you return earlier than expected, press
RUN SCHED button to resume program.
Press △or▽to immediately adjust the
temperature. This will temporarily override the
temperature setting for the current time period.
The new temperature will be maintained until the
time you set. When the timer expires, the program
schedule will resume and set the temperature to
the level you’ve programmed for the current time
period.
To cancel the temporary setting at any time, press
RUN SCHED. The program schedule will
resume.
Inquiry for filter count back time
This operation is only available when filter replacement time is set. Configuration menu item 17 explains
the way for inquiry for the count back time.
Inquiry for UV lamp duration time
This operation is only available when UV lamp duration time is set. Configuration menu item 18 explains
the way for inquiry for the UV lamp duration time.
Screen cleaning
Press CLEAN DISPLAY to lock the screen
for cleaning. The screen will remain locked for 30
seconds so you can clean the screen without
changing any setting.
After 30 seconds, press DONE to resume normal
operation, or press CLEAN DISPLAY again if
you require more time for cleaning.
Note: Do not spray any liquid directly on the
thermostat. Spray liquids onto a cloth, then use the
damp cloth to clean the screen. Use water or
household glass cleaner. Avoid abrasive cleansers
Press RUN SCHED
to resume program
schedule
Adjust temperature
Press to set time
Press CLEAN DISPLAY
Screen lock timer
(count back 30 seconds)

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Factory Default Pre-program
The thermostat is pre-programmed with the energy saving settings shown in the table below for all days
of the week. If this program suits your needs and the thermostat clock is correct for your region button,
then the thermostat is ready for operation.The table below shows the factory set heating and cooling
schedule for all days of the week
Program HEAT RETURN
Time Temp HEAT LEAVE Time COOL RETURN Time Temp COOL LEAVE Time
Mon 08:00 21.5 C
17:30
--- (OFF) 08:00 22.5 C
17:30 ---
Tue “ “ “ “ “ “ “ “
Wed “ “ “ “ “ “ “ “
Thu “ “ “ “ “ “ “ “
Fri “ “ “ “ “ “ “ “
Sat --- --- --- --- --- --- --- ---
Sun --- --- --- --- --- --- --- ---
Planning Your Program
The Heating and Cooling Program schedules below allow you to pencil in your own program times and
temperatures.
Keep the following guidelines in mind when planning your program
In Heating, lower temperatures will save energy
In Cooling, higher temperatures will save energy
If you plan on using Auto Changeover, set the heating temperature below the cooling set temperature
for more than the value of pre-set dead ban (See configuration menu item 5.
Worksheet for Re-programming 7 day program
Program HEAT RETURN
Time Temp HEAT LEAVE Time COOL RETURN Time Temp COOL LEAVE Time
Mon
Tue
Wed
Thu
Fri
Sat
Sun
CUSTOMERASSISTANCE
After reading this guide, if you have any question about the operation of your thermostat, please contact
your installer, service provider or contact HEVAC CONTROLS.
HEVAC CONTROLS PTY. LTD. 7 / 54 HOWLEYS RD NOTTINGHILL VIC.3150 Ph. 03 95627888
www.hevac.com.au 22/02/16

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(1) Press day(s) to set program schedule
(2) “Hold Until” indicates the time when a temporary hold period will end
(3) Press to select Auto (C/O), Cool (only), Off, or Heat (only) mode
(4) Press to select fan operation : cycles with compressor or ON during occupancy time.
(5) Press “MENU” to display first function menu of button (6) (7) (8) (9) (10)
(6) Press “SET TIME” to set current time and day
Press “INFO” to check outside temperature or inquiry for count back time for changing filter or
inquiry for UV light duration hours.
(7) Press “RUN SCHED” to resume program operation
Press “RESET” to current program setting or current configuration setting to factory default value
Press “CONFIG” to set configuration menu item
(8) Press “HOLD” to permanent hold current set point
Press “CLEAN DISPLAY” for entering 30 second count back time for cleaning the display
Press “PREVIOUS STEP” for going back to last configuration menu item
(9) Press “SET SCHED” for setting schedule for each days of the week
Press “NEXT STEP” for going forward to next configuration menu item or next day of week when
setting schedule.
(10)Press “OTHER” for entering the second function menu of (5) (7) (8) (10)
Press “CANCEL” to disregard current setting and go back to last operation
(11)Press “LEAVE” or “RETURN” to choose setting period of each day when setting program schedule
(12)Press UP and DOWN for modifying set point
(13)“Days”displays during steps in setting vacation duration days or count back days of vacation duration
days
“Am” indicate current time clock is in the morning. “Pm” indicates current time clock is in the
afternoon

(14)Press UP and DOWN for setting current time clock or setting time in programming or changing
Selections in configuration menu or setting the time when a temporary hold period will end
(15)“Emergency” flashes when system mode is set “EMER”
“ Using Schedule” displays when thermostat is operating under presetting schedule
“ Permanent Hold” displays when thermostat is in permanent hold setting temperature period
“Temporary Hold” displays when thermostat is in temporary hold setting temperature period
(16) displays when first stage cooling activate
displays when both first stage cooling and second stage cooling activate
(17) displays when first stage heating activate
displays when both first stage heating and second heating activate
(18) displays when Auxiliary heating or Emergency heating activate
(19) displays when circulating fan activate
(20) “
TECHNICIAN SET UP: USE UP AND DOWN FOR CURRENT SELECTION AND NEXT STEP
PREVIOUS STEP KEY TO THE NEXT PREVIOUS STEP” displays to help technician how to
operate in configuration mode
(21) Indicate current status of the thermostat
(22) “Chg Filter” displays indicate changing filter count back has expired
(23) “Comp Dly” displays when compressor delay lock out activate
(24) “Chg UV” displays when changing UV duration days has expired
HEVAC CONTROL AGENCIES
7/54 HOWLEYS RD NOTTING HILL 3168 VIC.
Ph. 03 9562788 visit our web site www.hevac.com.au
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sales 22/02/16