NTI C85-340 Installation And Operation Instructions Manual

Contents

NTI C85-340 Installation And Operation Instructions Manual Manual pdf 26 page image

Caprice │ Installation and Operation Instructions - Installation Checklist C 85-340269.0 FIELD WIRINGAll wiring and electrical grounding must be in accordance with local codes and the applicable National ElectricalCode, NFPA 70 (USA) or CSA C22.2 (Canada). Ensure that the wiring complies with this manual.Avoid Shocks - To Avoid Electrical Shock, turn off electrical power to the boiler prior toopening any electrical box within the unit. Ensure the power remains off while anywiring connections are being made. Failure to follow these instructions may result in component failure, seriousinjury or death.Wire Protection - When passing any wiring through the casing of any component orelectrical box, the installer must use wire grommets suitable for securing the wiring andpreventing chafing. Failure to follow instructions may result in component failure, serious injury or death.Burner Primary Safety - Blocked Vent Switch and any other limit device must breakpower to the burner primary (B1). Failure to follow these instructions may result inserious injury or death.Labeling - Label all wires prior to disconnecting them when servicing controls. Wiringerrors can cause improper and dangerous operation. Failure to follow instructions mayresult in property damage or personal injury.Manufacturer’s Instructions - For complete wiring details refer to the installationinstructions included with the HydroStat 3250, Burner, and Blocked Vent Switch.Table 9-1 Electrical Field Connections - Low VoltageConnection DescriptionT-T Heat Demand Input (Dry Contact) - from heating thermostat or zone controller. Contact closureindicates to the controller that there is a heating demand, controller will apply Thermal TargetingWWSD Outdoor Temperature Sensor (Factory Supplied) – Connecting the OD Sensor to WWSD and C enablesthe Warm Weather Shutdown feature of the controller. Control will not respond to T-T demands when theoutdoor temperature is above the WWSD setting.C Outdoor Temperature Sensor (Factory Supplied) – Connecting the Outdoor Sensor to OR and Cdisables Thermal Targeting and enables full Outdoor Reset functionality, including Warm WeatherShutdown.ORTable 9-2 Electrical Field Connections - Line VoltageConnection DescriptionL1Power Supply Hot – 120VAC input for the controller. Installation codes require the installation of aservice switch to break line voltage to the appliance. Power supply must be protected with 15 Amp circuitbreaker or fuse.L2 Power Supply Neutral – Location for connecting the Neutral of the power supply.C2 Circulator Neutral – Location for connecting the Neutral to the circulator.C1 Circulator Hot – 120VAC output to circulator (5.8 FLA max.)B1 Burner Hot – 120VAC output to burner (7.4 FLA max.). Additional safety limits, i.e. LWCO and/orBlocked Vent Switch, must be installed in series with this circuit. B1 is the Burner Primary.B2 Burner Neutral – Location for connecting the Neutral to the burner.ZC Priority Zone Output (120VAC) – Power supply for priority zone, power is always present at ZC unlessthe LO TEMP setting is not attained.ZRPriority Zone Input (120VAC) – When power is applied to ZR from ZC, via a contact closure of anIndirect Tank Thermostat, when Zone/Indirect Switch is set to “I”, the control overrides Thermal Targetingand Outdoor Reset functions, and operates to the HI TEMP setting. When Zone/Indirect Switch is set to“Z”, the control interprets the call as an end switch from Priority Zone relay, and operates as a central heatdemand performing Thermal Targeting or Outdoor Reset functions.