Crestron electronic 2.5, 3.5, 1.5 service manual Common venting

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Installation & Operation Manual

2 General venting

Common venting

Crest boilers may be common vented; however, the following criteria MUST BE followed:

1.Only Crest boilers may be connected to the common vent. DO NOT mix other manufacturer’s appliances or other Lochinvar models.

2.Crest boilers connected to the common vent must all be of the same size.

3.Each Crest boiler must have a Lochinvar supplied flue damper installed (see Table 2D).

4.Only vertical venting may be used when common venting Crest boilers. Sidewall venting is not allowed.

5.Crest boilers in a common vent must be connected and controlled with the integral Crest SMART TOUCH Cascade.

a.The Leader may be controlled through the Crest SMART TOUCH control through BMS (external 0 - 10V signal), ModBus or its own internally calculated set point.

b.The Cascade (Members) must be controlled by the Crest Leader boiler using the efficiency optimized Cascade.

For approved common vent sizing, contact the factory.

￿WARNING When Crest boilers are common vented, the criteria above MUST BE followed.

Failure to follow all these requirements will result in severe personal injury, death, or substantial property damage.

Table 2D Flue Damper Kits

Flue Damper Kits

Model

Damper Size

Kit Number

FB1500

7"

DRH30000

 

 

 

FB2000

8"

DRH30001

 

 

 

FB2500

9"

DRH30002

 

 

 

FB3000

10"

DRH30003

 

 

 

FB3500

10"

DRH30003

 

 

 

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Contents Save this manual for future reference Contents When servicing boiler Please read before proceedingCrest How it works BlowersCrest How it works Models 1.5 2.0 2.5 3.0 Ratings Crest Ahri RatingBefore locating the boiler, check Installation must comply withDetermine boiler location Provide clearancesVent and air piping Provide air openings to roomFlooring and foundation Prevent combustion air contaminationWhen 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 materialsApproved Stainless Steel Vent Manufacturers Make Model Air intake/vent connectionsRemoving from existing vent Common venting Determine location Vertical direct ventingVent/air termination vertical Prepare roof penetrationsMultiple vent/air terminations 4Alternate Vertical Terminations with Multiple BoilersSidewall direct venting Vent/air termination sidewallPrepare wall penetrations 2Clearance to Doors and WindowsRoom air 4Multiple Vent Terminations must also comply with FigureHydronic 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 GasGAS Piping Size Chart Check inlet gas supplyGas valve replacement Gas PressureField wiring Installation must comply withLine voltage connections Louver proving switch EnableOutdoor temperature sensor Low voltage connectionsWiring of the cascade Auxiliary switch 1Alarm contacts System supply sensorWiring FieldCondensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemInspect condensate system Check for gas leaksCheck thermostat circuits Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boilerFor Your Safety Read Before Operating Set space heating operation Gas Natural Gas Propane ValveVerify HWG circulator mode Set HWG target temperature Configuration of the cascadeSet clock Operating information GeneralProtection features Boiler temperature regulation Outdoor reset operation, if usedCascade Sequence of operation Crest control module Home Screen2Main Menu Screen Owner maintenance Maintenance Maintenance and annual startupService technician See the Crest User’s Information Manual for InstructionsMaintenance Check expansion tank Flue vent system and air pipingCheck water system Check boiler relief valveCheck control settings Check ignition ground wiringCheck all boiler wiring Check flame signalHandling ceramic fiber materials Cleaning boiler heat exchangerReview with owner Niosh stated First AidDiagrams Integrated Control2Wiring Diagram