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HEVAC RTC4 Manual

Programmable room thermostat c/w time switch

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HEVAC
RTC4
PROGRAMMABLE ROOM THERMOSTAT C/W TIME SWITCH
FEATURE:
 2 Stage 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 or Manual 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 RTC4 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 RTC4D is available with typical "Wake, Leave, Return & Sleep type
program.
CONTROLS
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Summary of Contents for HEVAC RTC4

  • Page 1  Optional UV light change indicator selectable APPLICATION: The RTC4 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...
  • Page 2 KEYBOARD, DISPLAY AND SWITCH DESCRIPTION Typical running screen - 2 -...
  • Page 3: Specification

    2 AA Batteries Front Panel Base Figure 4 SPECIFICATION: Power Supply ……………………… Dual Power 24VAC (18-30VAC,50/60Hz) or Battery Powered 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…………………...
  • Page 4: Wiring Diagram

    WIRING DIAGRAM HEAT PUMP CONVENTIONAL C/S1 C/S1 FIGURE 5 WIRING GUIDE HEAT PUMP UNITS (HP2 PROGRAM) HEAT/COOL APPLICATIONS (2H PROGRAM) 24v Active (for cool) 24v Active (for cool) 24v Active (for heat) 24v Active (for heat) 1 STAGE C/S1 Neutral C/S1 Neutral Fan O/P...
  • Page 5 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 PROGRAMMING...
  • Page 6 Both HEAT & COOL temperature set points & RETURN & LEAVE times have to be set for each day. This can be done for each individually or in a block of days by selecting more than programming. 1.) Select HEAT in the SYSTEM button window, 2.) Select the group of days that require the same RETURN time &...
  • Page 7: Operating Your Thermostat

    OPERATING YOUR THERMOSTAT Press SYSTEM option to your requirement Press FAN option to your requirement Press CANCEL to Press DONE to save disregard current and exit setting and exit Choose the Fan Setting (Auto or On) Fan set to “Auto” causes the fan to turn on only when heating or cooling is on (and the thermostat is running in the “RETURN”...
  • Page 8 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 if AUTO changeover option is set to 1.
  • Page 9 If you return earlier than expected, press RUN SCHED button to resume program. Press to set time Adjust temperature 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.
  • Page 10 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 22/02/16 www.hevac.com.au...
  • Page 11 (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”...
  • Page 12 (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...