Évaluations - 2, GPA: 4
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Facilité d'utilisation
This, in effect, prevents costly fuel consumption, as compared to an on-off cycling heater. The valve has a remote capillary bulb immersed in a well, at the header outlet, to maintain a constant outlet water temperature. When multiple valves are furnished, they can be staged to give greater flexibility of control. Standard factory setting is at position 5. Consult the dial setting tag attached to the control for your desired temperature. See chart below. Fig# 9331 24 Fig # 9330.1 MECHANICAL MODULATING VALVE LOCATIONMODELS 0724-1336 Fig # 9332 MOTORIZED GAS VALVE LOCATION Fig # 9333.1 MODEL 3001 LIMIT CONTROLS HIGH LIMIT The heater is equipped with a manual reset High Limit. Push the reset button and set the limit(s) to 30 °F - 40 °F above desired operating temperature. Maximum setting is 210 °F. FLOW SWITCH This dual-purpose control shuts off the heater in case of pump failure or low water condition and is strongly recommended. It is mounted and wired in series to the main gas valve. NOTE: The flow switch is a safety device and not a control. Do not operate the heater with flows less than the minimums stated in this manual. 100% PILOT SAFETY Models 514-4001 employ electronic devices which close the main gas valve within 8/10 of a second whenever the pilot flame is interrupted. Pilot flame is automatically lit when the device is powered. Unit performs its own safety check and opens the main valve only after the pilot is proven to be lit. LOW WATER CUT-OFF (OPTIONAL) The low water cut-off automatically shuts down burner whenever water level drops below probe. 90second time delay prevents premature lockout due to temporary conditions such as power failure or air pockets. Flush float type devices at beginning of each heating season. HIGH AND LOW GAS PRESSURE SWITCHES (OPTIONAL) These switches sense either high or low gas pressures and automatically shut down burners if abnormal pressures exist. 25 COMPONENT IDENTIFICATION Fig# 8643 Fig# 9314 MANUAL RESET HIGH LIMIT THERMOSTAT CONTROL Fig# 9312 Fig# 8929.1 HIGH and/or LOW IGNITION CONTROL MODULE GAS PRESSURE SWITCH Fig# 9316 Fig# 8995 LOW WATER CUT-OFF MECHANICAL MODULATING VALVE Fig# 8925 Fig# 9317 FLOW SWITCH FLOW SWITCH PADDLE CUTTING GUIDE 26 ELECTRICAL CONNECTIONS CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. DANGER - SHOCK HAZARD Make sure electrical power to the heater is discon- nected to avoid potential serious injury or damage to components. The heater is normally wired for 120 Volts. The voltage is indicated on the tie-in leads. Consult the wiring diagram shipped with the heater in the instruction packet. The "TH" leads are for the remote tank control connection. 24 Volts are supplied to this connection through the heater transformer. DO NOT attach line voltage to the "TH" leads on models 5141826. Before starting heater check to ensure proper voltage to heater and pump. Heater must be electrically grounded in accordance with National Electrical Code ANSI/NFPA No 70. NOTES: 1. Field install ground wire to inside of junction box. 2. If any of the original wire supplied with the heater must be replaced, it must be replaced with 105°C wire or its equivalent. Fig # 9138.2Fig # 9138.1 SINGLE-STAGE TANKSTAT 2- STAGE TANKSTAT (2 ON/OFF UNITS) 27 LOCATION OF CONTROLS 400 WH1, WH2, WH3 181 (LOW NOx) WH1 Fig # 9360 28 LOCATION OF CONTROLS Fig. #9334 29 LOCATION OF CONTROLS START-UP PROCEDURES BEFORE START-UP Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the heater when the heater underwent tests specified in the latest edition of the ANSI-Z21.10.3 Standard. GENERAL Before lighting up a new installation, water should be flowing through the heater. Water pressure regulator should be set to minimum 25 PSI. CAUTION: Propane is heavier than air and sinks to the ground. Exercise extreme care in lighting heater in confined areas. Fig # 9335 INITIAL START-UP - PUMP AND MOTOR Many pumps are now direct-drive. They have no coupler or bearing assembly. These pumps do not require lubrication. Others require SAE-30 non-detergent oil to lubricate both the motor and the bearing assembly. Check pump motor for type before adding oil. Clean dust and lint from pump and motor. Check pump coupler and tighten if necessary. Flush system before putting into operation to ensure that foreign material does not damage pump seals. CAUTION: A. Pump must be off to check oil in bearing assembly. B. Do not run pump without water in system. 30 General Safety Precautions To meet commercial water use needs, the thermostat on this water heater is adjustable up to 190°F. However, water temperatures over 125 °F can cause instant severe burns or death from scalds. This is the preferred temperature setting when supplying general purpose hot water. Safety and energy conservation are factors to be considered when settin...
Ce manuel est également adapté pour les modèles :électrique - 0133-4001 WH (1.31 mb)