Évaluations - 3, GPA: 4.7
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Facilité d'utilisation
3. In buildings with excessively high water pressure, a condition known as “water hammer” may exist. This condition is caused by a combination of high water pressure and the abrupt closing of a faucet valve or internal washer/toilet valve. This instant change in flow results in an instant change in the internal pressures in the pipe, which then sends a shock wave through the pipe. This physical shock will shake, rattle or cause a loud bang in the plumbing which is referred to as “water hammer.” Such a shock wave may cause movement of the power vent flow switch which will activate the fan. Consult a plumbing professional for the use of a pressure reducing valve, expansion tank or water hammer arrestor to combat this condition. Fig. 11A Properly closed back draft flapper Fig. 11B Improperly closed back draft flapper Troubleshooting 5.3 Pilot will not stay lit when manually lit (1600P and 425PN) or will not spark automatically with hot water flow (1600H and 425HN) 1. Check the linear safety spillage switch reset button to see if it is tripped (See Section 2.6). Overheating or loss of power to the unit will trip the safety spillage switch and stop the flow of gas. 2. Check the entire pilot safety circuit (including the safety spillage switch) for loose or dirty connections (See Fig 8). Clean any corrosion evident with a pencil eraser or light sandpaper. 3. Pilot flame is weak or yellow. Consult water heater installation manual for instructions on cleaning the pilot assembly. 5.4 Spark but pilot will not light (1600H and 425HN only) 1. Check time delay relay for proper setting. See Section 3.1.1. Set time delay relay adjuster to the (2) second position for 1600H and 425HN only. If the pilot will not consistently light, move adjuster to the (3) second position and to (4) second position if needed. DO NOT exceed position (4). Complete saftey interlock test after changing setting. See Section 3.1.3. 5.5 Pilot and/or burners go out during hot water use 1. Inspect entire vent system for blockage or obstruction. Ensure the back draft flapper installed on the power vent hood swings freely. 2. Verify power vent fan operates with water flow. If not, verify wire connection from flow switch to fan motor. Clean cold water inlet filter and verify flow rate through the water heater is adequate enough to activate the flow switch. If flow rate is more than 0.5 GPM, the flow switch may be defective and should be replaced. 3. If heater is newly installed, verify power vent fan motor is not installed backwards (See Fig 4). 4. Ensure power vent motor is mounted as close as possible to the VH1-4 vent hood. Mounting the power vent motor directly on top of or close to the water heater, may result in lifting flames and pilot outages. Vent pipe length must be at least 2 feet. 5.6 Noise when power vent motor is running 1. Ensure power vent motor is mounted level with motor shaft horizontal to prevent premature motor bearing wear. 2. Ensure power vent motor is mounted using the supplied vibration mounts to prevent premature motor bearing wear. 3. Remove vent pipe connection from water heater to power vent motor. Inspect internal fan wheel for broken fins. If any damage is evident, order online or call Technical Support (800) 642-3111 for a replacement wheel kit. One Year Limited Warranty 6 One Year Limited Warranty General The vent kit is warranted by the Manufacturer (TJERNLUND) through Bosch Thermotechnology Corp. Bosch Thermotechnology will furnish a replacement part which fails in normal use and service within the applicable periods specified below, in accordance with the terms of this warranty. The Bosch Thermotechnology replacement will be warranted for the unexpired portion of the original warranty. This warranty will be valid only for vent kits in possession of the original purchaser. The Warranty Terms If any vent kit component fails within one (1) year after the original installation and operation, Bosch Thermotechnology will furnish a replacement component. However, if the vent kit is installed in other than a single family dwelling, the warranty is limited to thirty (30) days from date of original installation and operation. Exceptions This warranty will not apply: 1. to defects or malfunctions resulting from failure to properly install, operate or maintain the unit in accordance with the printed instructions provided; 2. to damage or abuse, accident, neglect or other acts of nature; 3. to failure of the vent motor resulting from the operation of the vent kit in a corrosive atmosphere; 4. to defects or damage caused by any attachment or modification, including any energy-saving device. Shipping costs: In addition to supplying the replacement part(s), Bosch Thermotechnology will provide ground service delivery for these parts. Expedited or upgraded shipping will be charged to the customer. Service Labor Costs This warranty does not cover any labor costs associated with service, removal or re-installation of part(s). All such co...
Ce manuel est également adapté pour les modèles :Ventilateurs - AQ4 GWH 1600 P (1.48 mb)
Ventilateurs - AQ4 GWH 1600 H (1.48 mb)
Ventilateurs - AQ4 GWH 425 HN (1.48 mb)