[Normal Run Mode] ──( Press SET + UP for 3s )──> [Parameter Menu] ──( Enter Passcode )──> [Input Selection] Step 1: Set Input Type
: Press the Blue Temperature Select button to cycle through four presets: Low : 113°F (45°C) — Green light. Medium : 130°F (55°C) — Yellow light. High : 150°F (65°C) — Orange light. Maximum (Very Hot) : 166°F (75°C) — Red light . thermotech tt91 manual hot
| Parameter | Value | |-----------|-------| | | 230/240 VAC, 50/60 Hz | | Power consumption | ~40% less than conventional pumps (typical) | | Maximum system pressure | 125 psi (8.6 bar) | | Maximum fluid temperature | 165°F (74°C) | | Minimum fluid temperature | 36°F (2°C) | | Connection size | ¾" NPT or compression fitting | | Maximum flow rate | Approximately 2–3 GPM (7.5–11.4 L/min) | | Motor type | Electronically commutated spherical motor | | Protection class | IP44 (splash‑proof) | | Duty cycle | Continuous | | Noise level | < 45 dB(A) at 1 m | | Approvals | UL, CSA, CE | [Normal Run Mode] ──( Press SET + UP
Secondary 1 C/O Relay dedicated strictly to the built-in Soak Timer function ±0.2% to ±0.5% based on Full Scale (F.S.) value limits Control Profiles Maximum (Very Hot) : 166°F (75°C) — Red light
Over time, dust can coat the internal heat sinks. Using compressed air to clear the intake ports can often drop operating temperatures by several degrees. Safety Features and Indicators The TT91 is equipped with an Automatic Thermal Cutoff (ATC)
Refer to the "Troubleshooting" table in your manual; specific flash patterns (e.g., three short bursts) often point directly to a fan failure or a blocked sensor. Best Practices for Maintenance