WaterFurnace SPECTRA SX Series Installation Manual
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Contents
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18SPECTRA COMMERCIAL AND RESIDENTIAL INSTALLATION GUIDE9) Initiate a control signal to place the unit in the heating mode. Heating set point mustbe set above room temperature.10) First stage heating will energize after a time delay.11) Check the temperature of both the supply and discharge water. Refer to Table 2 onpage 17.12) Check for an air temperature rise of 20° to 35° F across the air coil, depending on thefan speed and entering water temperature. Refer to Unit Operating Pressure onpage 13.13) If auxiliary electric heaters are installed, adjust the heating set point until the electricheat banks are sequenced on. All stages of the auxiliary heater should be sequencedon when the thermostat is in the "Emergency" Heat mode. Check amperage ofeach element.14) Adjust the heating set point below room temperature and verify that the compressorand water valve or loop pumps deactivate.15) During all testing, check for excessive vibration, noise or water leaks. Correct or repairas required.16) Set system to desired normal operating mode and set temperature to maintain desiredcomfort level.17) Instruct the owner/operator of the proper operation of the thermostat and systemmaintenance.18) During all testing, check for excessive vibration, noise or water leaks. Correct or repairas required.19) Set system to desired normal operating mode and set temperature to maintain desiredcomfort level.20) Instruct the owner/operator of the proper operation of the thermostat and systemmaintenance.NOTE: If performance during any mode appears abnormal, refer to the troubleshootingsection on page 19.Water Coil Maintenance1) Keep all air out of the water. An open loop system should be checked to insure that thewell head is not allowing air to infiltrate the water line. Lines should always be airtight.2) Keep the system under pressure at all times. It is necessary in open loop systems thatthe water control valve be placed in the discharge line to prevent loss of pressureduring off cycles. Closed loop systems must have positive static pressure or air ventsmay draw air into the system.NOTE:If the installation is performed in an area with a known high mineral content (125P.P.M.or greater) in the water, it is best to establish with the owner a periodic maintenanceschedule so the coil can be checked regularly. Should periodic coil cleaning be necessary,use standard coil cleaning procedures which are compatible with either the cupronickel orcopper water lines. Generally, the more water flowing through the unit the less chancefor scaling.Other MaintenanceFilters - Filters must be clean to obtain maximum performance. They should be in-spected every two to three months under normal operating conditions and be replacedwhen necessary. Units should never be operated without a filter.PreventiveMaintenance |
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