Accent Heat Pump Tariff Controller User Manual Version 1.0 21 Atkinson Street, Liverpool NSW 2170 PO Box 146, Moorebank NSW 1875 ABN: 28 062 383 224 ACN: 062 383 224 Rheem Pool Heating Advisory: 1300 132 950 National Service Line: 1300 549 883 Email: sales@accentair.com.au Web: www.rheempoolheating.com.au
Table of Contents 1. Introduction... 3 2. Controller Layout... 4 2.1. PGD Screen... 4 2.2. PST Screen... 4 3. PGD Screen Basic Functions... 5 3.1. Turning the Unit On/Off... 5 3.2. Setting Pump Functionality... 6 3.3. Setting the Set Point Temperature... 7 3.3.1. With Tariffs Enabled... 7 3.3.2. Without Tariffs Enabled... 7 3.4. Setting Date and Time... 8 3.5. Programming the scheduler... 9 3.6. Programming for Tariff control... 10 3.6.1. Loading Default Times... 10 3.6.2. Manual Setup... 10 3.7. Changing between the PGD and PST Controllers... 12 3.7.1. Changing from the PGD to the PST Controller... 12 3.7.2. Changing from the PST to the PGD... 12 4. PGD Screen Other Menus... 13 4.1. Input / Output... 13 4.2. Alarm History... 13 4.2.1. Viewing the Alarm History... 13 4.2.2. Clearing an Active Alarm... 13 4.2.3. Resetting the Alarm History:... 14 4.3. Board Switch... 14 4.4. Service... 14 4.5. Manufacturer... 14 5. The PST Controller... 15 5.1. Type F (Frequent) Parameters... 15 5.2. Type U (User) Parameters... 15 6. Setting the PST... 17 6.1. Turning the unit On/Off... 17 6.2. Setting Pump Functionality... 17 6.3. Setting the Set Point Temperature... 17 6.3.1. Tariffs Enabled... 17 6.3.2. Tariffs Disabled... 18 6.4. Setting Date and Time... 18 6.5. Programming for Tariff Control... 18 7. PST Alarms... 19 7.1. Viewing an Alarm... 19 7.2. Alarm Codes... 19 8. PST Character Display... 20 9. Troubleshooting... 21 Version 1.0 2
1. Introduction Congratulations on your choice of an Accent Air heat pump. Accent has manufactured heat pumps in Australia since 1993. The company is part of the Rheem family and proudly manufactures air conditioning and heat pump technology for domestic, commercial and large scale project applications in Australia and internationally. Like Rheem, Accent is committed to environmental sustainability. We continually seek to be innovative in product development to help Australian households reduce energy usage. The Accent heat pump is a strong reflection of this commitment. The main energy source of this unit is heat naturally available, either from the air around us, from water or from the earth itself. All of these sources are totally renewable and they provide up to four-fifths of the energy that the unit requires. The rest is supplied by electricity and it is this energy use that the Accent tariff controller focuses on, to provide you with the lowest achievable heating cost. The Accent heat pump tariff controller has been specifically developed by us with the intelligence to understand Australian electricity pricing. The structure and pricing of electricity varies from state-to-state and supplier-to-supplier. The simplest pricing is flat rate, in which the electricity consumed is metered and priced in single blocks regardless of the time or day of use. At the other end of the spectrum, digital metering now allows far more sophisticated electricity pricing which reflects off peak, shoulder and peak time electricity use, with the pricing structure varying by time of day, by work day or weekend or public holiday and even by season. Where electricity has a time-of-use basis (i.e. where discounted off peak pricing is offered), then the opportunity is created to achieve substantial savings in heating costs. The importance of this control and the high level of potential savings is evident when it is understood that the price of electricity in off peak hours can be less than one-quarter of the day time peak rate. The tariff intelligence in-built to the control of your Accent heat pump allows the heat pump to control its recirculating pump, ensuring that both the electrical load of your heater and water pump are optimised relative to the price of electricity. The control options opened to you may be as simple as restricting the heater operation to off peak times only, or to off peak and shoulder periods only. The more sophisticated option is to set varying target pool temperatures and differentials by time of day and day of the week. That is, the temperature of the pool will be controlled within a pre-set but variable temperature band. Your Accent controller has the ability to fractionally raise the temperature of the pool during the off peak period to build a buffer before heating is required again in the more expensive shoulder or peak periods. Likewise, it will allow the pool to fall to a new lower threshold temperature in the shoulder or peaks periods as a further way of delaying or avoiding operation at these periods of higher electricity pricing. Our development of this control intelligence included detailed evaluation of all Australian electricity tariffs. Some more common tariff options are pre-loaded and all that is required of you to nominate your target pool temperatures. But programming of every possible tariff option is readily done, allowing you to fully customise your heat pump and recirculating pump operation both in terms of your needs for pool temperature but knowing that you have minimised your heating cost. Version 1.0 3
2. Controller Layout 2.1. PGD Screen Figure 1 shows the PGD screen at the Home Screen. screen if there has been no activity for a period of time. The controller will default back to this Time (24 Hour) Day and Date Alarm Button Up Button Prg Button Enter Button Esc Button Down Button Water Entering (Pool) Temperature Compressor Function Indicator Water Exiting Temperature On/Off Indicator Figure 1: PGD Controller and Home Screen 2.2. PST Screen Figure 2 shows the PST screen and the three buttons. Up Button Down Button Set/Alarm Button Figure 2: PST Controller Version 1.0 4
3. PGD Screen - Basic Functions 3.1. Turning the Unit On/Off 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu A. On/Off Unit Figure 3: On/Off Unit Menu 3. Push Enter Button 4. Push Enter Again 5. Use Up/Down Buttons to select unit On/Offf as shown in Figure 4 below. 6. Press Enter to confirm change Figure 4: Unit On Version 1.0 5
3.2. Setting Pump Functionality 1. Follow steps 1-3 as per turning the unit on/ /off 2. Use Up/Down Buttons to go to Type of Circulating Pump Control screen. As shown in Figure 5 below. Figure 5: Pump Control Screen 3. Press the enter button 4. Use Up/Down Buttons to select either Cycle to test temp or Permanent Note: Permanent is for when the water pump is always on or controlled externally to the heat pump. Cycle to test temp will turn the pump off after the unit has reached set point and cycle the pump on after the temperature test cycle time to check the temperature. 5. Press Enter to confirm change 6. If Cycle to test temp is selected use Up/Down Buttons to set time between temperature test cycles 7. Press enter to confirm change. Version 1.0 6
3.3. Setting the Set Point Temperature 3.3.1. With Tariffs Enabled When Tariffs are enabled there are two types of settings that need to be set, the set point temperature and the proportional band or differential. The set point temperature is the target temperature for the heat pump to operate to. The proportional band is the change in temperature away from set point before the unit will come on. For example, a heating unit has a set point of 30.0 C and a proportional band of 0.5 C. The unit will come on if the water temperature falls below 29.5 C. It is recommended to keep the same set point for each tariff time period and the proportional bands at 0.5 C for off peak periods, 1.0 C for shoulder periods and 2.0 C for peak periods. A larger proportional band for peak periods will delay the onset of the unit, which will save power consumption during those periods. 1. From the home screen press the Prg Button 2. Use the Up/Down Buttons to navigate to the tariff period you would like to adjust. 3. Press the Enter Button to highlight the Set Point 4. Use the Up/Down Arrows to set desired temperature 5. Press Enter 6. Use the Up/Down Arrows to set Proportional Band 7. Press Enter 8. Repeat steps 2 to 7 for the other tariff periods as necessary. Figure 6: Tariff Set Point Screen 3.3.2. Without Tariffs Enabled 1. From the home screen press the Prg Button 2. Use the Up/Down Arrows to set desired temperature 3. Press Enter to confirm the change Version 1.0 7
3.4. Setting Date and Time 4. From the home screen press the Esc button 5. Use Up/Down Buttons to select Menu C. Clock/Scheduler 6. Push Enter Button. You should see the screen shown in Figure 7 below. Figure 7: Clock Screen 7. Use the Enter button to move the cursor over the value you would like to change 8. Press Esc Button when finished. Note: The time is in 24 hour time. Version 1.0 8
3.5. Programming the scheduler 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu C. Clock/Scheduler 3. Press Enter If Enable Scheduler = yes then skip to step 7. 4. Press the Enter button until enable scheduler : No is highlighted 5. Use Up/Down Buttons to set YES 6. Press enter until there are no items highlighted 7. Use Up/Down Buttons to navigate to the Clock Schedule screen. As shown in Figure 8. Figure 8: Scheduler Screen 8. Use the Enter Button and Up/ /Down Buttons to set the times (in 24 hour time) for the operate. unit For example, if you set Mon 09:000 to 17:00 Mondays. the unit will be turned on from 9am to 5pm on Version 1.0 9
3.6. Programming for Tariff control 3.6.1. Loading Default Times 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu C. Clock/Scheduler 3. Press Enter If Enable tariff = yes then skip to step 7. 4. Press the Enter button until enable tariff : No is highlighted 5. Use Up/Down Buttons to set YES 6. Press Enter until there are no items highlighted 7. Use Up/Down Buttons to navigate to the Tariff Timeband screen. See Figure 9 below. 8. Press Enter until desired default is highlighted 9. Use Up/Down Buttons to select YES 10. Press Enter. ** DEFAULT LOADED ** should appear at the bottom of the screen when the defaults have been loaded. Figure 9: Tariff Load Defaults Screen 3.6.2. Manual Setup 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu C. Clock/Scheduler 3. Press Enter If Enable tariff = yes then skip to step 7. 4. Press the Enter button until enable tariff : No is highlighted 5. Use Up/Down Buttons to set YES 6. Press Enter until there are no items highlighted Version 1.0 Use Up/Down Buttons to navigate to the Tariff Timeband screen. See 10
7. Figure 10 below. Use the Enter Button to move the cursor over the one hour period you would like to change. See 8. Figure 10 below. Use the Up/Down Buttons to set the tariff type. See 9. Figure 10 below. The letters represent one hour of the 12 hours on an analogue clock. Time and Day Indicator Example: The three P hours represent a peak period from 6:00am to 9:00am on weekdays Figure 10: Tariff Setting Screen Version 1.0 11
3.7. Changing between the PGD and PST Controllers When the PST controller is used in conjunction with a PGD controller the default control will be the PGD controller and the PST controller will be inactive. Changing between controllers can be performed through the PGD only as described in 3.7.1 and 3.7.2 below. If the PGD becomes disconnected, for whatever reason, the PST will assume control. When the PGD is reconnected the PGD will automatically become the active controller and the PST will become inactive. 3.7.1. Changing from the PGD to the PST Controller 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu G. Service 3. Press Enter 4. Use Up/Down Buttons to select Menu a. Change Display 5. Press Enter 6. Press Enter to change to the PST Controller 7. Use the PST controller as desired 3.7.2. Changing from the PST to the PGD When the PST is the active controller the PGD will mimic the PST on the top line of the display. 1. Press the Prg Button 2. Press Enter 3. Push the Down Button so that the numbers under the cursor read 000 4. Press Enter 5. Press the Esc Button three times to return to the home screen 6. Use the PGD controller as desired Version 1.0 12
4. PGD Screen Other Menus 4.1. Input / Output To view all the Inputs and Outputs: 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu D. Input / Output 3. Press Enter 4. Use the Up/Down Buttons to cycle throughh the screenss Note: Values cannot be modified though this menu only viewed. 4.2. Alarm History In the event of an alarm the Alarm button will flash red. Push the Alarm Button to view the alarm. 4.2.1. Viewing the Alarm History 1. From the home screen press the Esc button 2. Use Up/Down Buttons to select Menu E. Alarm History 3. Press Enter 4. Use the Up/Down Buttons to cycle throughh the screenss 4.2.2. Clearing an Active Alarm 1. From the home screen press the Alarm Button to view active alarms 2. Push and hold the Alarm Button to clear the active alarms Note: Once the alarm is cleared the screen should read as shown below in Figure 11. If the screen does not show this and the alarm persists, the fault has not been fixed therefore the alarm cannot be cleared. Version 1.0 Figure 11: No Active Alarms Screen 13
4.2.3. Resetting the Alarm History: Note: It is not recommended to reset the alarm history as the history aids service technicians in diagnosing faults. 1. Follow steps 1 to 3 in 4.2.1 Viewing the Alarm History 2. When viewing one of the alarms press Enter 3. Press Enter Again 4. When No is highlighted, use the Up/Down Arrows to change it to yes 5. Yes will disappear automatically when the alarm history has been reset 4.3. Board Switch This menu is not used. 4.4. Service This menu is intended for service people only and is not covered in this manual. 4.5. Manufacturer This menu is intended for the manufacturer s agents only and is not covered in this manual. Version 1.0 14
5. The PST Controller When the PST is used in conjunction with a PGD controller the default control will be the PGD screen and the PST screen will be inactive. Changing between controllers is described in section 3.7 above. 5.1. Type F (Frequent) Parameters From the home screen use the Up/Down buttons to view the Type F parameters Table 1: Type F Parameters Parameter Description Set Button Function* /b1 Water Entering Temperature Tariff Enabled None Tariff Disabled Display/set the set point (St) value /b2 Water Exiting Temperature Change between parameter name and value on Unit is ON None OFF Unit is OFF None St Set Point Display/set the set point value *When the set button has a red light the set button will display the last alarm If tariffs disabled and when trying to change the set point nothing happens, scroll up/down to one of the other displayed values and press set. Scroll to the St screen and push set to change set point. 5.2. Type U (User) Parameters Access and setting type U (User) parameters 1. Push and hold both the Up and Down buttons. 2. Scroll inside the parameter menu using Up/Down buttons. 3. To display/set the values of the parameter displayed, press Set, then Up/Down and finally Set to confirm the changes Changes will automatically be stored by either pressing set or waiting for the screen to timeout. The Type U parameters are listed in Table 2 below. Depending on the settings, some of the parameters listed in Table 2 may not be available. Table 2: Type U Parameters Screen Code Description Type UOM Max Min Default Value St1 Setpoint for water temperature (Off Peak tariff) U St2 Setpoint for water temperature (Shoulder tariff) U St3 Setpoint for water temperature (Peak tariff) U rd switching differential for water temperature (No tariff) U rd1 switching differential for water U Version 1.0 15
temperature (Off Peak tariff) rd2 switching differential for water temperature (Shoulder tariff) U rd3 switching differential for water temperature (Peak tariff) U r3 Mode (H=heat only C=cool only H/C=heat and cool) U PS password (=22) Enables access to Type C Parameters U ten Enable tariff control U t00 Week end tariff 00:00-01:00 U t01 Week end tariff 01:00-02:00 U t02 Week end tariff 02:00-03:00 U t03 Week end tariff 03:00-04:00 U t04 Week end tariff 04:00-05:00 U t05 Week end tariff 05:00-06:00 U t06 Week end tariff 06:00-07:00 U t07 Week end tariff 07:00-08:00 U t08 Week end tariff 08:00-09:00 U t09 Week end tariff 09:00-10:00 U t10 Week end tariff 10:00-11:00 U t11 Week end tariff 11:00-12:00 U t12 Week end tariff 12:00-13:00 U t13 Week end tariff 13:00-14:00 U t14 Week end tariff 14:00-15:00 U t15 Week end tariff 15:00-16:00 U t16 Week end tariff 16:00-17:00 U t17 Week end tariff 17:00-18:00 U t18 Week end tariff 18:00-19:00 U t19 Week end tariff 19:00-20:00 U t20 Week end tariff 20:00-21:00 U t21 Week end tariff 21:00-22:00 U t22 Week end tariff 22:00-23:00 U t23 Week end tariff 23:00-00:00 U t30 Week Day tariff 00:00-01:00 U t31 Week Day tariff 01:00-02:00 U t32 Week Day tariff 02:00-03:00 U t33 Week Day tariff 03:00-04:00 U t34 Week Day tariff 04:00-05:00 U t35 Week Day tariff 05:00-06:00 U t36 Week Day tariff 06:00-07:00 U t37 Week Day tariff 07:00-08:00 U t38 Week Day tariff 08:00-09:00 U t39 Week Day tariff 09:00-10:00 U t40 Week Day tariff 10:00-11:00 U t41 Week Day tariff 11:00-12:00 U t42 Week Day tariff 12:00-13:00 U t43 Week Day tariff 13:00-14:00 U t44 Week Day tariff 14:00-15:00 U t45 Week Day tariff 15:00-16:00 U t46 Week Day tariff 16:00-17:00 U t47 Week Day tariff 17:00-18:00 U t48 Week Day tariff 18:00-19:00 U t49 Week Day tariff 19:00-20:00 U Version 1.0 16
t50 Week Day tariff 20:00-21:00 U t51 Week Day tariff 21:00-22:00 U t52 Week Day tariff 22:00-23:00 U t53 Week Day tariff 23:00-00:00 U -O- =Offpeak -P- =Peak -S- =Shoulder tcy RTC year U tcm RTC month U tcd RTC day of the month U tch RTC hour U tcn RTC minute U 6. Setting the PST 6.1. Turning the unit On/Off The default for the PST screen is ON and can only be changed using the PGD controller 6.2. Setting Pump Functionality Setting of the pump functionality is locked in the service menus of the PST, future software versions will enable setting the pump functionality from the PST controller. Setting Pump functionality can be performed by the user using the PGD screen. 6.3. Setting the Set Point Temperature 6.3.1. Tariffs Enabled When Tariffs are enabled there are two types of settings that need to be set, the set point temperature and the differential or proportional band. The set point temperature is the target temperature for the heat pump to operate to. The differential is the change in temperature away from set point before the unit will come on. For example, a heating unit has a set point of 30.0 C and a differential of 0.5 C. The unit will come on if the water temperature falls below 29.5 C. It is recommended to keep the same set point for each tariff time period and the proportional bands at 0.5 C for off peak periods, 1.0 C for shoulder periods and 2.0 C for peak periods. A larger proportional band for peak periods will delay the onset of the unit, which will save power consumption during those periods. 1. Enter the Type U parameter menu as described above 2. Scroll using Up/Down to St1 (Off Peak set point) 3. Press Set Version 1.0 17
4. Using Up/Down set the desired set point temperature 5. Press Set 6. Repeat steps 2-5 for parameters St2 (Shoulder set point), St3 (Peak set point), rd1 (off peak differential), rd2 (Shoulder differential) and rd3 (Peak differential) 6.3.2. Tariffs Disabled With tariffs disabled press the navigate to the St parameter in the home screens and press set. Using Up/Down adjust the temperature as desired and press set to confirm changes. 6.4. Setting Date and Time 1. Enter the Type U parameter menu as described above 2. Scroll using Up/Down to navigate to the desired setting as per 3. Table 3 below. 4. Press Set 5. Use the Up/Down Buttons to adjust the value Table 3: PST Time and Date Settings Parameter Description Example tcy Year 12 = 2012 tcm (tc ) Month 6 = June tcd Day of Month 1 = 1 st day of the month tch Hour (24 Hour time) 13 = 1pm tcn Minutes 15 = 15 minutes past the hour 6. Taking the examples used in Table 3 the time and date would be 1.15pm on 1 June 2012. 6.5. Programming for Tariff Control 1. Enter the Type U parameter menu as described above 2. Use up/down to scroll to ten 3. Press set 4. Use up/down to change to YES 5. Press set 6. Use up/down to scroll to parameter t00 7. Press set 8. Use up/down to set to peak (-P-), shoulder (-S-), or off peak (-O-) as required. 9. Press set 10. Repeat steps 6 to 9 for parameters t00 to t53. 11. Set the set points as above in 6.3.1 Version 1.0 18
7. PST Alarms In the event of an alarm the Set/Alarm Button will light up red and a buzzer will sound. The buzzer will continue to sound until the alarm button is pressed two times consecutively. 7.1. Viewing an Alarm 7.2. When the Set/Alarm button is Red press the Set/Alarm button and an alarm code will be visible. For a list of alarm codes see 1. Table 4 below. 2. Use the Up/Down buttons to scroll through other alarms which have occurred. 7.3. Alarm Codes Table 4: Alarm Codes Alarm Code Description A00 Flow alarm A01 probe B1 alarm A02 probe B2 alarm A03 probe B3 alarm A04 probe B4 alarm A05 probe B5 alarm A06 probe B6 alarm A07 probe B7 alarm A08 probe B8 alarm A09 probe B9 alarm A10 probe B10 alarm A11 probe B11 alarm A12 probe B12 alarm A13 HP fault - compressor 1 A14 HP lockout fault - compressor 1 A15 LP fault - compressor 1 A16 LP lockout fault - compressor 1 A17 HP fault - compressor 2 A18 HP lockout fault - compressor 2 A19 LP fault - compressor 2 A20 LP lockout fault - compressor 2 A21 HP fault - compressor 3 A22 HP lockout fault - compressor 3 A23 LP fault - compressor 3 A24 LP lockout fault - compressor 3 A25 HP fault - compressor 4 A26 HP lockout fault - compressor 4 A27 LP fault - compressor 4 A28 LP lockout fault - compressor 4 EO Communication error with controller Version 1.0 19
8. PST Character Display Table 5: PST Character Display Character Display Character Display Character Display A a 0 B b 1 C c 2 D d 3 E e 4 F f 5 G g 6 H h 7 I i 8 J j 9 K k L l / M m - N n O o P p Q q R r S s T t U u V v W w X x Y y Z z Version 1.0 20
9. Troubleshooting Table 6: Troubleshooting Fault Possible Cause Checks Action/s Unit Not Running Unit is turned Off Home screen status should read Unit is On Home screen reads Unit OFF by Take no action Turn unit on. See 3.1 KEYPAD Off by scheduler Home screen reads Unit OFF by SCHEDULE Check time is correct. See 3.4 Adjust schedule. See 3.5 Off by digital input Off by supervisor Home screen reads Unit OFF by REMOTE in Home screen reads Unit OFF by SUPERVISOR Turn scheduler off. See 3.5 Turn Remote Input On. Contact your installer. Unit has reached set point Pump has cycled off after reaching set point Alarm Flow Switch Pump not on Check pump is running Turn pump on. Clear Alarm. If alarm persists call your installer. Alarm High Pressure Safety Blockages in water system Check for obstructions at inlets, outlets, filters etc Clear obstructions. Clear Alarm. If alarm persists call your installer. Water flow not high enough As per Alarm Flow Switch As per Alarm Flow Switch. Call your installer. Fouled heat exchanger Call your installer. Dirty coil Outside unit is dirty or dust has built up. Hose down outside unit through louvers to clear dust build up around coil. Clear Fault Faulty fan/s Check both fans spinning in same Call your installer. direction and speed. Ambient temperature to high Wait for temperature to fall. Clear Fault. Call your installer. Incorrect refrigerant charge Call your installer. Alarm Low As per Alarm High Pressure Safety Pressure Safety Alarm Probe X Probe faulty or wiring open/short circuit Call your installer. faulty or wiring open/short circuit Version 1.0 21