4 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 1 Key to symbols and safety instructions 1.2 Safety Please read before proceeding 1.1 Key to symbols Warnings WARNING: Always turn off power at the main power supply before installing, cleaning, or removing thermostat.
6 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 3 Installation 3.3 Installing thermostat 3.1 Removing existing thermostat DANGER: ELECTRICAL SHOCK HAZARD Turn off power at the main service panel by removing the fuse DANGER: ELECTRICAL SHOCK HAZARD or switching the appropriate circuit breaker to OFF position ...
8 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 5 System setup and confi guration 5.4 Humidity output chart 5.1 Connection to the UPM (De)humidifi cation Setting With Humidity Control Demand The UPM’s ALARM COM terminal should be connected to R on the UPM board...
Installation, Operation & Application Manual Bosch 2H/2C/Hum Touch-Technology Thermostat | 9 5.5 Locking & unlocking thermostat 5.8 Confi guration mode settings The setup screens for Confi guration Mode are as follows: MENU Temperature Scale (F or C) LOCK ...
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1 0 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual Staged Off Outputs Heat Source: There are six heat source settings: — Select whether the outputs for heating and cooling are staged off independently or are WARNING: satisfied simultaneously.
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Installation, Operation & Application Manual Bosch 2H/2C/Hum Touch-Technology Thermostat | 11 Auxiliary Delay ON (0-60 minutes) Minimum Cool Setpoint (45°F to 90°F) (7°C to 32°C) — — Set the delay time in minutes for auxiliary heat to be locked out after a Adjust to control the minimum cool set temperature allowed.
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1 2 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual Room Temperature Offset (+9°F to -9°F) (+4.5°C to -4.5°C) Humidity Differential (1% to 10%) — — Adjust to calibrate displayed room temperature to match actual room Set the percent diff...
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Installation, Operation & Application Manual Bosch 2H/2C/Hum Touch-Technology Thermostat | 13 Fan Delay Off Time (0, 30, 60, 90 seconds) Check Filter Timer (800-2500 hours) — — Select the amount of time the fan continues to operate after the cool/ After the number of (fan running) hours specified, (for example, heat demand has been satisfied.
1 4 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 6 Mode of operation 6.1 Icon functions UP – Used to increase the time, set temperatures, and to adjust This thermostat is based on the i2020HR, but adds connections to the UPM to read confi...
Installation, Operation & Application Manual Bosch 2H/2C/Hum Touch-Technology Thermostat | 15 6.2 Operating modes Cool Mode The possible operating modes for the thermostat are: OFF, HEAT, EM HEAT, COOL, — In this mode, the thermostat controls the cooling system. When the and AUTO.
1 6 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 6.3 Testing the thermostat 6.4 Testing the thermostat humidity control Humidifi cation Test – when set to humidifi cation, only Once the thermostat is confi gured, it should be thoroughly tested.
Installation, Operation & Application Manual Bosch 2H/2C/Hum Touch-Technology Thermostat | 17 6.5 Setting the time and date 6.6 Setting the program schedule Press , then press until CLOCK is displayed. The thermostat has four periods (WAKE, LEAVE, RETURN, SLEEP) that are customizable for each day of the week.
1 8 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 6.7 View screen options View if locked or unlocked — = Unlocked Press , then press repeatedly until the option displays — = Locked then press Press to advance to the next screen.
Installation, Operation & Application Manual Bosch 2H/2C/Hum Touch-Technology Thermostat | 19 6.8 Viewing fault codes When one of the faults listed below causes a hard lockout on the UPM the unit compressors are disabled and the “Call Service Tech” light is illuminated.
2 0 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 6.9 Schedule override The schedule override feature allows the user to override the program schedule for 1 to 5 hours. In addition, if selected, the schedule can be overridden only until the next transition period.
2 2 | Bosch 2H/2C/Hum Touch-Technology Thermostat Installation, Operation & Application Manual 8 Troubleshooting Symptom Solution Check for 24 VAC at thermostat; display is blank when 24 VAC is not present. Time and day of week must be reset after No display power loss with no batteries installed.