Reclaim Energy Heat Pump Controller v1.1 Manual

Important Safety Information

IMPORTANT: This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.

WARNING: This appliance may deliver water at high temperature. Refer to the Plumbing Code of Australia (PCA), local requirements and installation instructions to determine if additional delivery temperature control is required.

Issue 01 | Feb 2022

Table of Contents

• 1 Overview
• 2 Before you begin installation
• 3 Installing the Reclaim controller
• 4 Front panel operation
• 5 Modes of operation
• 6 User access
• 7 Status of operation LED and Button function summary

1 Overview

This controller is designed to work only with the Reclaim CO2 domestic hot water heat pump. The key difference between V1 and V1.1 controller is the introduction of Option 6, which is a remote option control in V1.1. All functionalities between controllers are the same. For more information on how the controller works, please refer to the heat pump installation manual.

v1 CONTROLLER

Times at which temperature mode is enabled:

• Option 1: 24/7
• Option 2: 10 pm - 7 am
• Option 3: Midnight - 6 am
• Option 4: 10 am - 4 pm
• Option 5: Two cycles – first must be set for a minimum of 6 hours and second can be set as little as 0 hours.

One shot boost: This activates the heat pump if the temperature is less than 59°C and heats up until 59°C at sensor level is achieved.

v1.1 CONTROLLER

All options are the same as V1 with the additional Option 6 as below:

• Option 6: One shot boost is activated by a dry contact signal from home management or PV inverters or dry contact smart switches. This is called "Remote" option.

The controller measures the tank temperature and compares it to set points stored in memory. These set points can be dependent on the time of day, depending on the option set. Once the lower temperature is reached, the controller signals the heat pump to start heating via the RJ45 cable. Once an upper temperature is attained, the controller signals the heat pump to stop heating. The controller automatically manages Legionella safety, heating once a day if the Legionella safe temperature has not been attained during the day.

The 7-segment display defaults to the time of day but can also show the measured temperature. Three status LEDs provide additional information.

The onboard Real Time Clock is maintained by a Super Capacitor on the main circuit board. This will keep the time running for 3 weeks with no power applied, but itself should last for the lifetime of the controller. The controller is pre-wired to be 'plug n play' and there is usually no need to remove the cover during installation. The enclosure is water-resistant (to rain) and is UV-resistant. The case is made of non-burning tough polycarbonate.

2 Before you begin installation

Case tools required

• Philips 1 screwdriver for lid screws (if required to remove cover)
• Pozi 2 screwdriver for mounting screws

General Safety Precautions

READ THESE SAFETY PRECAUTIONS and LIMIT OF LIABILITY BEFORE YOU BEGIN.

The following pages contain instructions for qualified personnel only. They involve potentially hazardous adjustments and high voltage mains wiring information.

The installation is to be checked at least annually for damage or malfunction. All servicing is to be carried out by qualified personnel only. All aspects of the installation must comply with local electrical and plumbing regulations.

WARNING: These products are not designed for use in, and should not be used for, applications which are in conjunction with items that are critical to any person's health (e.g., life support systems). In any critical installation, independent fail-safe back-up systems must always be implemented.

Installation Precautions

• Make sure the controller is installed out of direct sunlight, flammable liquids, or radiant heat sources. Power leads must face directly down.
• Ensure the controller is in a safe environment for users to inspect the display panel.
• Sensor leads should be kept 300mm (12 inches) away from mains and comms cables if run parallel to those cables.
• A readily accessible power disconnect device is required.

CAUTION: Dangerous Voltages may be present. No user serviceable parts. Protective enclosure must only be opened by qualified personnel. Remove ALL power sources before removing the protective cover. The Reclaim Controller must be installed by a qualified person. Ensure suitable over-current protection and RCD protection for the Reclaim Controller is in place.

3 Installing the Reclaim Controller

Mounting

Follow these steps:

1. Allow for the enclosure dropping 5mm (1/5 inch) from screw centres once mounted (keyhole mounting).
2. Place the printed drill guide template (that ships with the controller) against the wall, checking for level alignment. All four mounting holes should be used with at least two firmly secured into wood or masonry.
3. Mark and drill/screw as appropriate, leaving the heads of the screws above the surface by approximately 3mm (1/8 inch).
4. Place the unit over the four screw heads. The unit should slide down 5mm into the 'key' slots and become secured to the wall. You might need to adjust the screw height to obtain a secure fit.

Sensor Mounting

WARNING: It is CRITICAL the sensor is mounted correctly for accurate readings, safe and efficient operation of the system, and durability of the sensors.

The sensor should be fitted into a dry metal immersion 'pocket' in the hot water cylinder. Apply plenty of heat transfer compound (available from your distributor) between the sensor and the lining of the 'pocket', then seal against water ingress where the cable exits the cylinder with neutral cure silicon.

Connect to Heat Pump

Plug RJ45 cable into the heat pump.

Connect PV Remote wires (only if applicable)

A 'clean set of contacts' (passive only) is expected for this input. If not, then the controller could be damaged.

The remote input is accessible by removing the cover. Ensure mains power is isolated during this work.

Loosen the cable gland and thread the cable next to the sensor cable.

Wire in as indicated on the diagram.

Plug in the controller to the power source

Before power up, read all safety instructions, warnings, and liability statements.

The controller will run through start-up checks, including lighting all LEDs. Then, the first display will be the time of day the controller thinks it is. Page 7 has details on how to adjust the time.

4 Front Panel Operation

The controller features a digital display and several buttons for operation.

Display: Shows temperature or time.

Buttons:

• BOOST [↑ EXIT]: Normal Mode: Boost Toggle. Menu Mode: Exit Menu. Data Change Mode: Increment.
• TEMP [↓]: Normal Mode: Sensor °C. Menu Mode: Next Setting. Data Change Mode: Decrement.
• MENU [ENTER]: Normal Mode: Menu Mode. Menu Mode: Enter. Data Change Mode: Accept setting.

Controller Status LEDs:

• Green LED (Power): Flashing in standard mode, steady on in Boost mode.
• Yellow LED (Output): Indicates the Heat Pump is being told to turn on. If flashing, it is in Boost mode.
• Red LED (Fault): Solid on indicates a fault code on the digits. Flashing indicates a sensor fault.

5 Modes of Operation

Time Control Mode:

Temperature control mode can be enabled and disabled during certain periods within the 24-hour period, as set in the options page. On entering the start time of an option, there will be a boost cycle initiated. Then, once at the target temperature, it will continue to reheat when the tank temperature falls below 'Ton'.

The user can select between permanent enable, four preset time periods, a remote input option, or two user-selectable fully adjustable time periods.

When the Time Control Mode is active, the Power ON LED flashes.

Boost Mode:

The Boost mode can also be turned on and off via a momentary press of the boost button. When activated, temperature control mode is enabled, allowing the heat pump to turn on. The heat pump will remain on until the temperature reaches 59°C (plus 3 seconds), or the 6-hour period has elapsed, whichever occurs first. The On Call LED will start flashing, indicating the heat pump has been turned on via Boost Mode. If inadvertently pressed, boost mode can be turned off by pressing the Boost button again.

Note that if a faulty temperature sensor is detected (e.g., Eg-8 or Eg-9), the Boost function will still operate and turn the heat pump on for 6 hours.

Temperature Control Mode:

On first start, the heat pump is turned on if the temperature is less than 59°C (default).

On subsequent starts, the heat pump is turned on when the temperature in the tank drops to the T-on setting (37°C - default) and turns off when the temperature reaches the T-off setting (59°C - default). Both switch points have a fixed time delay of 3 seconds.

This mode is disabled if a faulty temperature sensor is detected (Eg-8 and Eg-9), although the boost mode is still operational.

There is an additional inbuilt time delay for the T-OFF temperature, called T-OFF Maintain time. The default is 0 minutes, but if set to 1 minute, then the T-OFF temperature must stay at the T-OFF value or greater for one minute (plus the 3 seconds), before the heat pump is turned off.

Options:

• Option 1: Temperature only control mode.
• Option 2: Temperature control starting at 22:00 and remain enabled for 9 hours.
• Option 3: Temperature control starting at 00:00 (midnight) and remain enabled for 6 hours.
• Option 4: Temperature control starting at 10:00 and remain enabled for 6 hours.
• Option 5: User settable for two operational windows. The first must be at least 6 hours and the second can be set for 0 hours or more.
• Option 6: Temperature control starting on contact closure on REMOTE input and remain enabled for the duration of contact closure. Once contact is open, the heating cycle will finish.

Heat Pump Faults:

Should the heat pump unit go into fault, it will generate a fault code which this module will display. The Fault LED will turn on, and one of the following error codes will be displayed:

• Eg-1 Heat Pump Sensor error (not the controller sensor)
• Eg-2 Compressor error or Refrigerant shortage
• Eg-3 PCB error - heat pump PCB faulty
• Eg-4 Circulation failure
• Eg-5 Pump error
• Eg-6 Fan Motor error
• Eg-7 Discharge temperature error
• Eg-8 Tank Temperature sensor not detected (open circuit)
• Eg-9 Tank Temperature sensor fault (short circuit)

Note: Temperature control mode is disabled for Eg-8 and Eg-9 faults, however boost mode is still operational.

Heat Pump Purge Mode:

On occasion, the heat pump needs to be purged of air in the system.

To activate Purge Mode, perform the following steps:

1. Ensure the module is in the Normal Display mode, displaying either Time of day or Temperature.
2. Press and hold down the Menu button for approximately 5 seconds.
3. The display will commence flashing 'Purg'.
4. The heat pump output will be disabled.
5. The Purge output will be enabled.
6. Purge mode will remain active for 5 minutes.
7. All menu and display modes are disabled during Purge Mode.
8. After 5 minutes has elapsed, the purge output will turn off.
9. All control functionality will resume.

Note: Purge mode can be turned off at any time by again pressing and holding the menu button for 5 seconds. Purge mode is automatically turned off if the module is currently displaying a heat pump error code.

6 User Access

The controller allows for various settings to be accessed and modified by the user.

Navigation:

• MENU then TIME: Set the current time.
• MENU then oPtn: Access operational options.
• MENU then StAt: View status.

PUSH BUTTONS:

• Boost / Exit / Up
• Temperature / Move / Down
• Menu / Accept

Options Menu (oPtn):

• oP-1: Heat Pump Enabled for 24hrs (Default)
• oP-2: Preset Time Switch Setting - 2
• oP-3: Preset Time Switch Setting - 3
• oP-4: Preset Time Switch Setting - 4 (P.V.)
• oP-5: Remote Control Input - CON2, Term 3 & 4
• oP-6: User configurable time switches and run times.

EXIT TO TIME DISPLAY

Notes:

1. 'x' = Current Value
2. In Data Change mode, when "Adj" is toggled on the display, the value can be changed by using the UP button or the DOWN button.

Examples:

Setting the Time:

1. Press MENU + ENTER: 'MENU' appears on display.
2. Press TEMP + ↓: 'time' appears on display.
3. Press MENU + ENTER: The time and 'ADJ' alternatively flash on the display.
4. Press BOOST + ↑ to increase the time or TEMP + ↓ to decrease time.
5. When finished, press MENU + ENTER: 'time' appears on display.
6. Wait 12 seconds for menu timeout. New time will appear.

Changing an Option - Mode of Operation:

1. Press MENU + ENTER: 'MENU' appears on display.
2. Press TEMP + ↓: 'time' appears on display.
3. Press MENU + ENTER: 'optn' appears on display.
4. Press TEMP + ↓: The option and 'ADJ' alternatively flash on the display.
5. Press BOOST + ↑ to increase the option number or TEMP + ↓ to decrease the option.
6. When finished, press MENU + ENTER: 'optn' appears on display.
7. Wait 12 seconds for menu timeout. New time will appear.

7 Status of Operation LED and Button Function Summary

Controller Status LEDs:

Note: Eg during Options 2 – 6; When the heating is disabled due to the time period, the Green LED will be solid. When temperature mode is enabled due to the time, the Green LED will flash.

Button Functions: