Bosch CRC200 Quick Start Manual page 2

Part No. 7738111034
11. Max supply temp appears. Defaults are in the chart above. Set for the maximum
heating temperature of the boiler. This setting does NOT reduce DHW output for
a combi boiler or indirect tank.
12. Frost protect appears. Set to "by room" to prevent system freezing; the boiler
will run automatically when indoor air temp falls below a default temp of 41℉.
13. Heating start appears. Select "Yes" and press the dial, and the main menu
appears.
Confi guring Outdoor Temp Reset
1. Activate the hidden service menu by pressing the "Menu" button for 3 seconds;
then press the dial to confi rm entering the service menu.
2. Turn the dial to select "system data" and then press dial to confi rm.
3. Heating zone (HC) assignment appears. Turn the dial to get to "Control type" &
press dial to confi rm.
4. Select "External simple" and press dial. This is the default outdoor reset program
built into the controller.
5. Turn the dial & scroll past a few other menu items to select "Min Outside temp";
press the dial to confi rm.
6. Turn the dial & press to set the outdoor design temp for your area; see chart
below (or look up temps online for your coldest average city temperature).
Cities
Seattle/Portland
Boston/New York/Washington
St. Louis/Kansas City
Chicago/Detroit/Buff alo/Montreal
Denver/Salt Lake City
Minneapolis/Fargo/Green Bay
Table 2
7. Press the dial to confi rm the setting.
8. Press the "back" button
9. Turn the dial to 70℉ and press "Manual" mode; do not leave it in "Auto" mode.
The CRC200 uses 70℉ indoor temp as a default for outdoor reset, even when
not used as a thermostat in conditioned space
The CRC200 will now control outdoor temp reset. The third-party thermostats and
zone controllers on terminals "2 & 4" (TT2) will control the zone(s). The CRC200
confi guration is complete.
2
Design Temp.
20 °F
-9 °F
-15 °F
-20 °F
three times to exit setup.
Bosch CRC200 + Outdoor Reset (with Third-Party Controls) Quick Start Guide
The CRC200 can also be used with other Bosch NSC controls (CZM100, CRC100) to
manage up to 8 zones without the need for third-party controls. The CRC200 can be
used as a programmable room thermostat in a single zone home; it can perform simple
or optimized outdoor reset, indoor reset, or a combination of indoor and outdoor
reset if desired. It will display fault and system messages from the boiler. Contact your
distributor or Bosch for more details.
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Bosch Thermotechnology Corp.
BTC 465103301 A | 04.2021