Navien CH-180 ASME Installation Manual

Also see for CH-180: Owner's operation manual User's operation manual Service manual Installation manual Operation manual

Navien CH-180 ASME Installation Manual Manual pdf 9 page image

Installation Warnings:9Protect against snow accumulation around the vent terminations. Ensure the exhaust pipeand the intake air pipe remain clear from obstructions at all times.DO NOT overtighten fittings as pipe and/or fitting damage may occur causing leakage.DO NOT install the combination Boiler where subject to vibrations.The vent for this appliance shall not terminate over public walkways, or near soffit vents,crawl space vents and other areas where condensate or vapor could create a nuisance,hazard or cause property damage. Or where condensate and vapor could cause damageto or could be detrimental to the operation of regulators, relief valves, or other equipment.For other than a direct vent appliance, the appliance must be located as close as possibleto a chimney or gas vent.Should overheating occur or the gas supply fails to shut off, turn off the manual gas controlvalve to the appliance. Contact a Service Technician immediately.The gas connections and water connections must be leak tested before placing into operation.After placing into operation the ignition safety device must be tested.Visually inspect the venting system for proper size and horizontal pitch and determinethere is not blockage or restriction, leakage, corrosion and other deficiencies which couldcause an unsafe condition.Insofar as is practical, close all building doors and windows and all doors between thespace in which the appliances remaining connected to the common venting system arelocated and other space of the building. Turn on cloths dryers and any appliance notconnected to the common venting system. Turn on any exhaust fans, such ar range hoodsand bathroom exhausts, so they will operate at maximum speed. Do not operate a summerexhaust fan. Close fireplace dampers.Place in operation the appliance being inspected. Follow the lighting instructions. Adjustthermostat so appliance will operate continuously.After it has been determined that each appliance remaining connected to the commonventing system properly vents when tested as outlined above, return doors, windows,exhaust fans, fireplace dampers and any other gas-burning appliance to their perviouscondition of use.Any improper operation of the common venting system should be corrected so the installationconforms with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSAB149.1, Natural Gas and Propane Installation Code. When resizing any portion of thecommon venting system, the common venting system should be resized to approach theminimum size as determined using the appropriate tables in Appendix F in the NationalFuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas andPropane Installation Codes.The instructions for the installation of the venting system shall specify that the horizontalportions of the venting system shall be supported to prevent sagging; the methods of andintervals for support shall be specified. These instructions shall also specify that the ventingsystem:■ For Category I, II and IV boilers, have horizontal runs slopping upwards not less than 1/4inch per foot (21 mm/m) from the boiler to the vent terminal;■ For Category II and IV boilers, be installed so as to prevent accumulation of condensate; and■ For Category II and IV boilers, where necessary, have means provided for drainage ofcondensate.“Caution: Label all wires prior to disconnection when servicing controls. Wiring errors cancause improper and dangerous operation.”“Verify proper operation after operation servicing.”15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.