Honeywell T8205B,C; TS8205B,C; T8205A/TS8205A; Q8205A-C Electronic Pool, Spa Control Systems
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Product Overview
The Honeywell T8205B,C and TS8205B,C Electronic Pool and Spa Control Systems are designed for controlling water temperature in pool, spa, and hot tub applications. The systems consist of a Control Module (T8205A or TS8205A) and a Setpoint Panel (Q8205A-C). A Sensor Assembly is purchased separately.
Control Modules and Setpoint Panels can be purchased separately for flexible mounting. Setpoint Panels can be remotely located. The systems utilize solid-state electronics potted in a moisture and chemical-resistant package, providing reliable operation in demanding environments.
Visual Description of Components:
- TS8205A Control Module: A compact circuit board featuring electronic components, connectors, and a transformer.
- Q8205A Setpoint Panel: A user interface panel with a dial (potentiometer) for temperature adjustment, a selector switch, and connection terminals.
- TS8205B Control System: A control unit with a dial, a switch, and terminals, mounted on a base.
- T8205C Control System: A control unit similar to the TS8205B, but equipped with two dials (potentiometers) and a switch, mounted on a base.
Standard Features
- T8205A low-voltage control module requires a 24 Vac power supply; TS8205A is used in a mV self-generating system.
- Controls water temperature within ±1.5°F (0.8°C) at a setpoint of 106°F (41°C).
- Features 1/4 in. and 3/16 in. quick connect terminals for compliance with ANSI miswiring standards.
- Isolated relay contacts in electronic control modules are suitable for operating gas controls or ignition modules.
- The electronic module is potted, making it resistant to water and chemicals, commonly found in pool and spa environments.
- Plastic potentiometers and selector switches offer enhanced protection against humidity and chlorine.
- The electronic control module and setpoint panel are packaged together to simplify installation.
- IAS Approved, meeting ANSI Standard Z21.23-1993.
Optional Features
- Control module and setpoint panel are available separately for remote mounting.
- LED indicators are available for:
- Pool-Off-Spa selection
- Power status
- Heat On status
Specifications
Electrical Ratings:
- T8205 Power Supply: 18-30 Vac, 60 Hz.
- T8205 Power Consumption: 3 VA at 24 Vac.
- TS8205 Power Supply: 750 mV, dc.
Relay Contacts:
- Inductive: 2A full load, 10A locked rotor.
- Resistive: 2A.
Temperature Settings:
- Setting Range: 61° to 106°F (16° to 41°C).
- Setpoint Adjustment: 10K ohm, one-turn potentiometer.
- Setpoint Accuracy: ±1.5°F (0.8°C) at 106°F (41°C).
- Differential: Not field adjustable; maximum 1°F (0.7°C) at 106°F (41°C), subtractive.
Ambient Temperature Range (at Module):
- T8205: -40° to +175°F (-40° to + 80°C).
- TS8205: 0° to 175°F (0° to 80°C).
Sensor:
NTC thermistor sensor embedded in a copper bulb, includes leadwires with 3/16 in. female quick connects.
Mounting:
Control Systems (T8205B,C, TS8205B,C) mount on the appliance via mounting holes. Sensors mount directly into the header or in a well.
Important Mounting Note: T8205A, TS8205A Control Modules and Q8205A-C Setpoint Panels must be mounted with adequate electrical spacing as required by approval agencies. Modules can be mounted on any suitable flat surface using #6 screws. Panels mount through board holes using #6 screws.
System Configurations and Specifications
T8205B,C 24 Vac Control Systems
| Control System | Control Rating | Potentiometers | Switch Positions | LED On-Off | LED Terminal | N.C. Contacts |
|---|---|---|---|---|---|---|
| T8205B | 24 Vac | 1 | On-Off | yes | yes | yes |
| T8205B | 24 Vac | 1 | On-Off | no | no | no |
| T8205C | 24 Vac | 2 | Pool-Off-Spa | no | no | no |
| T8205C | 24 Vac | 2 | Pool-Off-Spa | no | yes | no |
| T8205C | 24 Vac | 2 | Pool-Off-Spa | yes | yes | no |
| T8205C | 24 Vac | 2 | Pool-Off-Spa | yes | yes | yes |
TS8205B,C Millivolt Control Systems
| Control System | Control Rating | Potentiometers | Switch Positions |
|---|---|---|---|
| TS8205B | 750 mV | 1 | On-Off |
| TS8205C | 750 mV | 2 | Pool-Off-Spa |
T8205A/TS8205A Control Modules
| Control Module | Control Rating | N.C. Contacts | LED Terminal |
|---|---|---|---|
| T8205A | 24 Vac | optional | optional |
| TS8205A | 750 mV | not available | not available |
Q8205A-C Setpoint Panels
| Panel | Potentiometers | Switch Positions | LED |
|---|---|---|---|
| Q8205A | 1 | none | none |
| Q8205B | 1 | On-Off | none |
| Q8205C | 2 | Pool-Off-Spa | optional |
Sensors
| Sensor | Termination | Lead Length | Diameter | Capsule Length | Mounting | Material |
|---|---|---|---|---|---|---|
| 198799E | 3/16 in. quick connect | 42 in. (1067 mm) | 3/8 in. (10 mm) | 2 in. (51 mm) | Compression | Copper |
| 198799H | 3/16 in. quick connect | 42 in. (1067 mm) | 3/8 in. (10 mm) | 2-5/8 in. (67 mm) | Spud | Copper |
| 198799K | 3/16 in. quick connect | 42 in. (1067 mm) | 3/8 in. (10 mm) | 2 in. (51 mm) | Compression | Monel |
| 198799R | 3/16 in. quick connect | 48 in. (1219 mm) | 3/8 in. (10 mm) | 3 in. (76 mm) | Compression | Copper |
| 198799S | 3/16 in. quick connect | 96 in. (2438 mm) | 3/8 in. (10 mm) | 2-5/8 in. (67 mm) | Spud | Copper |
Typical System Wiring Diagrams
The following diagrams illustrate typical system wiring configurations for controlling water temperature in pool, spa, or hot tub applications.
Diagram 1: T8205B,C (or TS8205B,C) wired to 24V Gas Control
This diagram shows a T8205B or T8205C control system connected to a 24V gas control. Key components include the control module (T8205B or T8205C), a setpoint panel (Q8205B or Q8205C), a sensor, a 24 VAC power supply, a fuse, limits, and a gas valve.
Notes for Diagram 1:
- 1. Power Supply: Ensure proper disconnect means and overload protection are provided as required.
- 2. Setpoint Panel Configuration: Q8205B has one potentiometer; Q8205C has two potentiometers.
- 3. Factory Wiring: T8205B,C units are factory wired.
Diagram 2: T8205B,C (or TS8205B,C) wired to Ignition Module
This diagram illustrates a T8205B or T8205C control system connected to an ignition module. Components include the control module, setpoint panel, sensor, 24 VAC power supply, fuse, limits, an S8600 ignition module, and a VR8200 gas valve.
Notes for Diagram 2:
- 1. Power Supply: Ensure proper disconnect means and overload protection are provided as required.
- 2. Setpoint Panel Configuration: Q8205C has two potentiometers; Q8205B has one potentiometer.
- 3. Factory Wiring: T8205B,C units are factory wired.
Diagram 3: TS8205B,C Wiring Connections for High Limit Control
This diagram shows the wiring for TS8205B,C control systems when configured for high limit control. It includes the TS8205B or TS8205C control system, a Q8205B setpoint panel, a sensor, and connections for a high limit control and a millivolt generator.
Notes for Diagram 3:
- 1. Polarity: Polarity is critical; follow polarity markings during wiring to prevent malfunction.
- 2. Limit Action: A limit action with the high limit wired between the gas control and generator will lock out the heater until the pilot is manually relit.
- 3. Alternate High Limit Location: This location allows automatic heater restart after the limit switch remakes.
- 4. Factory Wiring: TS8205B,C units are factory wired.
