Systém pro zmírňování negativních dopadů ASPEN A2LII-A2L-001

Specifikace

• Název produktu: Systém pro zmírňování nepříznivých vlivů A2L
• Components: Refrigerant Detection Sensor, Sensor Bracket, Wire Harness, Mitigation Control Board, Control Box, Relay
• Installation Requirement: Field installation by an A2L-trained HVAC contractor
• Mounting: Vertical surface within three feet of the furnace

Návod k použití produktu

Kroky instalace:

1. Připravte kryt cívky, abyste odkryli výparníkovou cívku.
2. Slide red discs over the field piping and follow the installation guidelines for brazing.
3. Attach the sensor bracket vertically to the drain pan.
4. Run the sensor cable through a casing opening with a drip loop to prevent condensation damage.
5. Mount the mitigation board enclosure on a nearby surface using tape or screws.
6. Connect the sensor cable and low-voltage wires to the control board.

Podrobnosti o připojení:
Podrobné pokyny k připojení naleznete na obrázku E.

Pokyny pro montáž systému pro zmírňování dopadů A2L v terénu:

NADVIEW

The mitigation control system consists of a refrigerant detection sensor mounted on a sensor bracket, a wire harness connecting the sensor to the mitigation board, a control box with a mitigation control board and optional relay, and a wire harness for connecting the system to a new/existing field wiring/air moving system. Refer to Figure A and A1 below for the complete system:

Systém kontroly zmírnění

Figure A1 Mitigation Control Boards (kryt odstraněn pro zobrazení vnitřních součástí)

INSTALACE

The mitigation system is required to be installed in the field by an A2L-trained HVAC contractor at the time of installation, following these steps:

1. For case A-coils, remove the coil casing front panels to expose the entire evaporator coil. For uncased coils, slide the coil into the field provided coil casing. For slab coils, remove the side panel on the refrigerant piping side. For dedicated horizontal/plenum coils, skip to step three.
2. Slide the red discs (one for the liquid and suction line each) over the field piping and away from the brazing area. Follow the instructions outlined in the coil’s installation manual for brazing and installing the evaporator coil.
3. Attach the sensor bracket, ensuring it is in the vertical position, on the drain pan as shown in Figure B below. For specific sensor bracket locations, please refer to Tables 12.2A and B in the IOM:
4. Run the sensor cable through an opening in the casing. Use the grommet supplied in the kit for the hole (0.875”) in the sheet metal to ensure the cable is not damaged when exiting the coil casing. The installing contractor must ensure there is a drip loop created (shown in Figure-C below) in the harness to ensure condensation does not run into the sensor connection.
5. Mount the mitigation board enclosure to a nearby flat, vertical surface by using a.) the included two-sided tape or b.) using field-supplied screws; see Figure D below for more details. The enclosure must be mounted perpendicularly flush to a wall or permanent structure near the coil within three (3) feet of the furnace. Do NOT mount the enclosure to the outside of the furnace or evaporator coil casing, as damage could occur to the equipment. Keep the enclosure clear of the furnace flue pipes.
6. Připojte kabel snímače k ​​řídicí desce v krytu. Připojte nízkoobjemtage wires into the existing/new wiring/air moving system as in Figure-E below:
7. For uncased coils, apply the warning labels included in the kit to the coil casing, ensuring they are visible from the front of the coil. For cased A-coils, dedicated/plenum, and slab coils, the labels will be applied to the casing at the factory.
   Close the casing holding the evaporator coil. Slide the discs so they reside just outside of the coil cabinet. For dedicated horizontal/plenum coils, apply disc to refrigerant lines before brazing field piping. See Figure-F below for a pictorial representation. These markings will alert any technician servicing the installation in the future that the system is charged with an A2L refrigerant.

OVĚŘENÍ: RUNNING THE SYSTEM TEST IS MANDATORY FOR ALL INSTALLATIONS. THE HVAC SYSTEM MUST NOT COMPLETE COMMISSIONING UNTIL THE INSTALLATION STEPS OUTLINED IN THIS MANUAL HAVE BEEN SUCCESSFULLY COMPLETED.

DŮLEŽITÉ: Never connect the sensor to the mitigation control board while the board is powered; ensure the system is powered off prior to working on this mitigation system. Use only the “SENSOR1” PORT; the
“SENSOR2” port shall only be used in applications with two indoor units, in which the sensor will also connect to the mitigation control board. If the sensor is not connected before powering up the mitigation system, it will enter leak mitigation mode. Once the system enters leak mitigation mode, it will stay in mitigation state for at least five (5) minutes, even if the control board loses power or the power is cycled. Therefore, it is strongly advised to connect the sensor prior to powering up.
Proveďte test těsnosti chladiva A2L Mitigation Control pro všechny provozní režimy jeden po druhém – režimy Chlazení (pro AC a tepelná čerpadla), Topení (pro tepelná čerpadla), Elektrické vytápění a Ventilátor.

Aplikace se standardní sadou A2L Mitigation Kit (volba „S“):
Nastavte termostat do jednoho z výše uvedených provozních režimů a ujistěte se, že je systém napájen a správně v tomto režimu běží. Testovací sekvenci bude nutné provést znovu v každém provozním režimu. Otevřete kryt, abyste získali přístup k řídicí desce zmírnění. Jakmile je systém napájen, bude řídicí jednotka komunikovat se snímačem A2L, aby si vyžádala údaje o koncentraci chladiva ve vzduchu ve skříni výměníku, počkejte 10 sekund a ověřte, že LED STATUS ukazuje režim zahřívání (trvale svítí), poté počkejte 20 – 30 sekund a ověřte, že LED STATUS zobrazuje režim Run (trvale nesvítí).

1. Najděte kabel snímače připojený k portu „SENSOR1“ na řídicí desce zmírnění.
   Odstraňte kabel snímače tak, že stisknete jazýček na konektoru a vytáhnete z desky, abyste odpojili snímač.POZNÁMKA: The A2L Mitigation Control for Aspen’s applications is set up on Auto Reset, so the manual function RESET BUTTON is disabled.
2. Once the sensor is disconnected, wait 15 seconds. The mitigation control board no longer detects the sensor. Verify that the STATUS LED blinks the fault communication fault (2 blinks). The mitigation sequence begins:
   1. The HVAC system operation that was chosen for the control will provide a system response that will deactivate the compressor and energize the indoor blower.
   2. Vnitřní dmychadlo začne pracovat a zůstane v provozu po dobu nejméně 5 minut od počáteční detekce poruchy. Chybový kód STATUS LED (2 bliknutí) bude pokračovat po celých 5 minut.
   3. Once steps b. i., and b. ii. It has been confirmed that the test is considered successful. It is recommended to wait the entire 5 minutes to allow the test sequence to expire.
3. Cycle the system power, reconnect the sensor to the “SENSOR1” port, then power up the system to verify that the STATUS LED shows Warm-Up mode (solid ON). Wait 20-30s, then verify that the STATUS LED shows Run mode (solid OFF). For systems that only require one sensor, the test is complete.

POZNÁMKA: Pokud SYSTÉM DETEKCE CHLADIVA A2L NEFUNGUJE SPRÁVNĚ PRO ŽÁDNÝ Z PROVOZNÍCH REŽIMŮ, ZNOVU ZKONTROLUJTE SCHÉMA ZAPOJENÍ VAŠEHO INSTALOVANÉHO SYSTÉMU A NEPOKRAČUJTE, DOKUD NEBUDE PROBLÉM VYŘEŠEN.

SCHÉMATA ZAPOJENÍ – STANDARDNÍ: 

Aplikace s A2L Mitigation + sada pro ovládání příslušenství (volba „R“): 

The “Accessory Control Kit” includes a relay and a wire harness used to de-energize the W1 & W2 call or to energize or de-energize add-on equipment/accessories or functions. Set the thermostat to one of the above operation modes, and ensure that the system is powered and running properly in that mode. The test sequence will need to be performed again in each operation mode. Open the enclosure by removing the two screws and the metal cover to access the mitigation control board and accessory control relay. Once the system is powered, the control will communicate with the A2L sensor to request data on the concentration of airborne refrigerant within the coil cabinet, wait 10 seconds, and verify that the STATUS LED shows Warm-Up mode (solid ON), then wait 20 – 30 seconds and verify that the STATUS LED shows Run mode (solid OFF).

1. Najděte kabel snímače připojený k portu „SENSOR1“ na řídicí desce zmírnění. Odstraňte kabel snímače tak, že stisknete jazýček na konektoru a vytáhnete z desky, abyste odpojili snímač.
2. Once the sensor is disconnected, wait 15 seconds. The mitigation control board no longer detects the sensor. Verify that the STATUS LED blinks for the ault code for ocommunicationfnon-fault(2 blinks). The mitigation sequence begins:
   1. The HVAC system operation that was chosen the control will provide a system response which will deactivate the compressor and the additional equipment/accessory that is connected to the terminals 3, , and 11, 12 of the rel, ay such as but not limited to electric heat or gas heat, or air cleaner atthe same time, then it will energize the indoor blower. See the relay and wiring diagram below for details.
   2. Vnitřní dmychadlo začne pracovat a zůstane v provozu po dobu nejméně 5 minut od počáteční detekce poruchy. Chybový kód STATUS LED (2 bliknutí) bude pokračovat po celých 5 minut.
   3. Once steps b. i., and b. ii. It has been confirmed that the test is considered successful. It is recommended to wait the entire 5 minutes to allow the test sequence to expire.

POZNÁMKA: Ztráta komunikace mezi ovládáním a senzorem také způsobí stav zmírnění po dobu nejméně 5 minut. Řízení se neobnoví, dokud nebude obnovena komunikace.

WIRING DIAGRAMS – WITH ACCESSORY CONTROL KIT:

FAQ

Can I install the mitigation system myself?

No, the system must be installed by an A2L-trained HVAC contractor.

Where should the enclosure be mounted?

The enclosure must be mounted perpendicularly flush to a wall within three feet of the furnace.

How should I connect the low-voltage dráty?

Follow the wiring instructions provided in Figure-E forproper connection.

Dokumenty / zdroje

Systém pro zmírňování negativních dopadů ASPEN A2LII-A2L-001 [pdf] Instalační průvodce A2LII-A2L-001 Systém řízení zmírňování nepříznivých vlivů, A2LII-A2L-001, Systém řízení zmírňování nepříznivých vlivů, Řídicí systém

Reference

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