Odyssey A2L Cooling Only TTA Condenser Paired with Terminal Equipment with CSTI Board Low Voltage Wiring

Equipment:

Terminal Equipment like Blower Coils with CSTI control board

Odyssey R454B TTA Condenser

Low Voltage Wiring:

Notes:

1. All controls relays are field provided. Keep 24VAC sources isolated (Symbio 400B and Symbio 700). Failure to do this could result in equipment damage.
2. If air handler unit is equipped with electric heat, thermostat will control stages through W1 and W2 signals.
3. Do not exceed P21, 24VAC OUT terminal, max current draw 75 mA.
4. Control relays total electrical load powered from the Symbio 700 (coil side), not to exceed 17 VA.

Symbio 700 Configuration

• System Type: CVZT
• Indoor Fan Type: When connecting the Symbio™ condenser to a Terminal air handler with a control interface board and either equipped with VFD or motor starter, confirm that the Symbio 700 Controller indoor fan type configuration is set to Single Speed selection
• Primary Heating Source: If the air handler is equipped with electric heat, configure the Symbio 700 Controller for primary heating source to Not Installed, otherwise a Diagnostic for Options Module Comm Fail will be active. The Symbio 700 will still turn the indoor fan on with a W1 call.

Air Handler to Condenser Connections

Control Wire - Thermostat wire, up to five conductors

Table: Pairing air handler to condenser wiring