Crestron electronic 3.5, 2.5, 1.5 manual

Revision Notes: Revision A (ECO #C07970) initial release.

Revision B (ECO #C08023) reflects changes made to FIG. 6-3 on page 32 for Mass approval and changes made to FIG. 5-3 on page 28.

Revision C (ECO #C08179) reflects the addition of three (3) new vent manufacturers (pg. 16 - Table 2A).

Revision D (ECO #C08585) reflects edits made to FIG. 4-4 and the addition of Fixed or Variable Flow Primary in place of Full Flow.

Revision E (ECO #C08841) reflects changes made to #3 on page 42 additional information added to the humidity warning on page 7, along with references to the Dual Fuel Supplemental Manual.

Revision F (ECO C09629) reflects the update of the AHRI and ASME logos on page 6 and the update of condensate disposal information and Figure 8-1 on page 39.

Revision G (ECO C10325) reflects a kit number correction (Neutralizer kit) and the addition of version 4, software update (pg. 49).

Revision H (ECO C10391) reflects the change in Label and Wiring diagrams on pages 58 and 59.

FB-I-O Rev H

07/12

Image 60

Crestron electronic 3.5, 2.5, 1.5 service manual

Contents

Save this manual for future reference Contents When servicing boiler Please read before proceeding Crest How it works Blowers Crest How it works Models 1.5 2.0 2.5 3.0 Ratings Crest Ahri Rating Installation must comply with Determine boiler locationBefore locating the boiler, check Provide clearances Provide air openings to room Flooring and foundationVent and air piping Prevent combustion air contamination When using an existing vent system to install a new boiler Products to avoidAreas likely to have contaminants When removing a boiler from existing common vent system Remove boiler from wood pallet 7Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room General venting Direct ventingOptional room air Install vent and combustion air piping Air inlet pipe materials Approved Stainless Steel Vent Manufacturers Make Model Air intake/vent connections Removing from existing vent Common venting Vertical direct venting Vent/air termination verticalDetermine location Prepare roof penetrations Multiple vent/air terminations 4Alternate Vertical Terminations with Multiple Boilers Sidewall direct venting Vent/air termination sidewall Prepare wall penetrations 2Clearance to Doors and Windows Room air 4Multiple Vent Terminations must also comply with Figure Hydronic piping Circulator sizing Model20F 40F 60F Near boiler piping components System Multiple Boilers Common Header Primary / Secondary Flow For all equipment and detailing required by local codes Hydronic piping Connecting gas supply piping Gas connectionsModel Gas Inlet Size Natural gas Propane Gas GAS Piping Size Chart Check inlet gas supply Gas valve replacement Gas Pressure Field wiring Installation must comply withLine voltage connections Enable Outdoor temperature sensorLouver proving switch Low voltage connections Auxiliary switch 1 Alarm contactsWiring of the cascade System supply sensor Wiring Field Condensate disposal Condensate drain Freeze protection when used Start-upCheck/control water chemistry Fill and test water system Check for gas leaks Check thermostat circuitsInspect condensate system Inspect/check condensate lines and fittings Final checks before starting the boiler Start the boilerIf boiler does not start correctly Check system and boiler For Your Safety Read Before Operating Set space heating operation Gas Natural Gas Propane Valve Verify HWG circulator mode Set HWG target temperature Configuration of the cascadeSet clock Operating information General Protection features Boiler temperature regulation Outdoor reset operation, if used Cascade Sequence of operation Crest control module Home Screen 2Main Menu Screen Maintenance Maintenance and annual startup Service technicianOwner maintenance See the Crest User’s Information Manual for Instructions Maintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valve Check ignition ground wiring Check all boiler wiringCheck control settings Check flame signal Cleaning boiler heat exchanger Review with ownerHandling ceramic fiber materials Niosh stated First Aid Diagrams Integrated Control 2Wiring Diagram