Do not proceed in adjusting CO2 until pressure is at or above these levels, but not to exceed 14” WC. A. Once Gas Pressure is adequate B Turn ON/OFF switch to the OFF (O) position. B Remove brass flat head screw on the exhaust collar as seen in Fig. 40. B Insert CO2 analyzer probe into the measuring port. The tip of the probe should be in the center of the flue 6 720 608 263 30 6 720 608 263 Maintenance and service pipe (approx 1.5" inserted). Avoid air gaps between probe and measuring port as i

Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier. Upon completion of the installation, these instructions should be handed to the user of the appliance for future reference. In the Commonwealth of Massachusetts this product must be installed by a licensed plumber. FEATURING: Automatic Variable Power Modulating Gas Valve and power generated Electronic Ignition WARNING If the information in this manual is not followed

These water flow related problems can cause the heater to deliver less than its full output, or to fail to ignite or to shut down completely. Problems are stated in upper case, bold face. Most common causes for the problems follow in order of likelihood. The suggested solutions require that the cover be taken off. To do this, pull off the temperature knob and unscrew and remove the temperature knob collar. Pull main cover out toward you and lift up and out. NO SPARK AT THE PILOT 1. On/Off switch

C. NUMBERS APPLIANCE NATURAL GAS LPG 9/14CBi 41 311 50 41 311 51 14/19CBi 41 311 52 41 311 53 19/24CBi 41 311 54 41 311 55 Worcester supports the Benchmark code of practice Vote for your‘Installer of the year’ atCentral Heating When a demand is made for heating by the system controls (i.e. a programmer or room thermostat). A pump will energise circulating primary water around the heating system and the burner, after a few seconds, will light. The heat output from the appliance in this mode has b

Maximum output is obtained when the slide control is to the far left. In order to optimise energy consumption, adjust slide control position to supply the minimum output required. If there is air in the gas pipe when the appliance is commissioned, this can cause ignition failure. In such cases, the hot water tap should be turned off and then on again so that the appliance repeats the ignition cycle. The procedure should be repeated as necessary until the gas pipe is purged of air. Danger: the ar

Warning: This heater must be electrically grounded in accordance with the most recent edition of the National Electrical Code NFPA 70. In Canada, all electrical wiring to the heater should be in accordance with local codes and the Canadian Electrical Code, CSA C22.1 Part 1. Do not rely on the gas or water piping to ground the metal parts of the heater. The 2400 E requires an electrical power supply from a 120VAC / 60Hz circuit (with a dedicated outlet) and must be properly grounded. A means for

Every 3-5 years replace component 36 on page 16. The frequency will depend on the mineral content of the water and conditions of use or whenever signs of corrosion appear at the gas and water valve joint. Periodically check that the water inlet filter (#27 on page 16) is clean as well. NOTE: If water valve is removed, be sure to also inspect the o ring seal on the end of the right hand side water pipe before re-installing. Lubricating the o ring with lithium or faucet and valve grease is recomme

DISTANCE LEARNING AND TRAINING COURSES ARE AVAILABLE FROM WORCESTER BOSCH. THIS APPLIANCE MUST BE INSTALLED BY A COMPETENT PERSON. FAILURE TO INSTALL CORRECTLY COULD LEAD TO PROSECUTION. PLEASE LEAVE THIS GUIDE, THE INSTALLATION INSTRUCTIONS AND THE COMPLETED BENCHMARK LOG BOOK WITH THE USER OR AT THE GAS METER AFTER INSTALLATION. DO NOT INTERFERE WITH ANY SEALED COMPONENTS. ABBREVIATIONS USED IN THIS BOOK: NG - Natural Gas LPG - Liquid Petroleum Gas CH - Central Heating DHW - Domestic Hot Water

All Bosch instantaneous water heaters heat water only as required; no energy is lost maintaining a large volume of water at elevated temperatures as in tank-type storage water heaters. Suitable for heating potable water only. Not approved for space heating purposes. POWER VENTED - ELECTRONIC IGNITION ASTRAVAN DISTRIBUTORS, LTD. 123 Charles Street North Vancouver, B.C. V7H 1S1 Phone Canada: (604) 929-5488 Phone USA: (206) 860-8448 Web Site: www astravan.com Note: In case of problems please contac