Page 2 - ORDERING INFORMATION; SPECIFICATIONS
L404F,T,V PRESSURETROL ® CONTROLLERS 71-2429—2 2 ORDERING INFORMATION When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the TRADELINE® Catalog or price sheets for complete ordering number. If you have additional questions, need further in...
Page 3 - INSTALLATION; When Installing This Product...
L404F,T,V PRESSURETROL ® CONTROLLERS 3 71-2429—2 Table 2. Conversion Table. Table 3. Switch Ratings (Amperes). Pressure Sensing Element: Stainless steel diaphragm (140 to 2070 kPa models) has brass bellows. Maximum Ambient Temperature: 66°C (150°F). Also, refer to note under Mounting. Adjustment Mea...
Page 4 - Pressure Gauge Mounting
L404F,T,V PRESSURETROL ® CONTROLLERS 71-2429—2 4 IMPORTANT When making pipe connections, use pipe dope sparingly to seal the joints; any excess dope may clog the small hole in the fitting and prevent the controller from operating properly. Location and Mounting (L404F) Locate the L404F where the amb...
Page 5 - Using with Preheated Oil; WIRING; WARNING
L404F,T,V PRESSURETROL ® CONTROLLERS 5 71-2429—2 Fig. 4. Mounting an oil pressure controller directly on the main pipe. Using with Preheated Oil When used with preheated oil, a siphon loop (part number 14026) must always be connected between the controller and the main pipe (see Fig. 5) to provide t...
Page 6 - SETTINGS AND ADJUSTMENTS; Setpoint Adjustment
L404F,T,V PRESSURETROL ® CONTROLLERS 71-2429—2 6 Fig. 8. L404T,V terminal blocks and internal schematics. Fig. 9. Hookup of an oil pressure controller used on a single burner system with an integral oil pump. Fig. 10. Hookup of an oil pressure controller used on a single burner or multiburner system...
Page 7 - CHECKOUT
L404F,T,V PRESSURETROL ® CONTROLLERS 7 71-2429—2 CHECKOUT After the controller has been installed, wired and adjusted, it should be tested with the system in operation. First, allow the system to stabilize. Then, observe the operation of the controller while raising and lowering its setpoint. Pressu...