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A.O. Smith BTI 100 G manual

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Table of contents for the manual

  • Page 1

    MODELS BTI 85 G BTI 100 G HOT WATER STORAGE HEATERS UNITED KINGDOM / IRELAND INST ALLA TION AND USER INSTRUCTION[...]

  • Page 2

    2 Read these installation instructions first before installing the appliance. Carefully read the user instructions before igniting the appliance. Failure to follow these instructions may lead to risk of explosion and/or fire and could cause material damage and/or bodily harm. Installation and commisioning should be carried out by a qualified compet[...]

  • Page 3

    3 CONTENTS PAGE 1. GENERAL 1.1 Description ...................................................................................................... 4 1.2 Technical safety equipment ............................................................................ 6 1.2.1 Gas control valve ....................................................................[...]

  • Page 4

    4 1. GENERAL 1.1 Description of the appliance Construction of the water heater is in accordance with the European standard for gas heated water storage heaters for sanitary application (EN89). The appliance thus meets the European Directory for Gas Appliances and is therefore entitled to carry the CE- marking. It is an open flued appliance without [...]

  • Page 5

    5 1) Draught diverter 2) Hot water outlet 3) Insulation 4) Flue tube 5) Glass lined tank 6) Gas valve and spark ignition 7) Control panel 8) Inspection cover plate 9) Intermittent pilot burner and flame probe Figur 1 - Cross section of the heater 10) Cold water inlet 11) Combustion products discharge safety device 12) T&P valve connection 13) O[...]

  • Page 6

    6 1.2 Technical safety equipment 1.2.1 Gas control valve The water heater is equipped with a gas control wich regulates the flow of gas to the burner. The gas block is equipped with a safety valve, gas valve and burner control (on a standard natural gas setting). To ensure improved ignition the gas control valve opening mechanism is fitted with a d[...]

  • Page 7

    7 1.2.3 Operation of the storage water heater. Normal operation When there is a demand for heat a waiting period of about 1 second elapses before the built-in spark gene- rator and pilot gas valve are switched on. The ignition sparks ignite the pilot burner and the resulting flame is detected by the ionisation electrode. Almost immediately after th[...]

  • Page 8

    8 A 1585 1780 B 1450 1640 D 645 675 F 770 775 G 130 130 K 340 340 L 355 370 M 1505 1685 N 1505 1685 P 210 210 R 285 285 S 1280 1460 V 410 410 1 Cold water inlet 2 Hot water outlet 3 Gas control 4 Drain valve 5 T&P relief valve tapping 6 Clean out Dimensions BTI 85 BTI 100 1.3 Technical information 1.3.1 Dimensions These water heaters are only s[...]

  • Page 9

    9 Figur 3 - Dimensions AOS 1092[...]

  • Page 10

    10 DATA NATUREL GAS G20 - 20 mbar Nominal capacity kW 19.2 20.4 Nominal load (gross) kW 25.1 26.7 Supply pressure mbar 20 20 Burner pressure mbar 12.0 7.9 Gas consumption * m 3 /h 2.40 2.50 Diameter main orifice mm 3.90 4.50 Diameter pilot orifice mm 0.56 / 0.41 0.56 / 0.41 Heating time ∆ T= 45K min 46 58 DATA BUTANE G30 - 30 mbar Nominal load (g[...]

  • Page 11

    11 Electrical connection Electrical Frequency Electrically supply fused to 220/240 V AC 50 Hz 5A Ionisation current. The minimal ionisation current is 0.9 mi- cro-Amperes DC. Below this current the burner controller will assume no flame present. When in normal operation, the ionisation current wil be about 1.2 to 1.3 micro-Amperes DC when only the [...]

  • Page 12

    12 2. FOR THE INSTALLER 2.1 Installation instructions This water heater must be fitted in a location which will permit the provision os an approved flue system and ade- quate ventilation. A service clearance of 15 cm at the sides and rear of the unit and 60 cm at the front of the unit should be allowed for ease of servicing. Adequate distance must [...]

  • Page 13

    13 Figur 4 - Connection diagram vented systems Therefore if this water heater will be used to supply hot water to: - hairdressers, - dry cleaners, - industrial degreasing processes or any other area where compounds containing halogens are used and stored, care should be ta ken that all primary and secondary air is drawn from outside atmosphere free[...]

  • Page 14

    14 Unvented system (See figur 5) To install an A.O. Smith water heater on an unvented cold water supply system a kit of valves and fittings fisted by the water reseach centre and complying with part G3 of the current building regulations should be used. Installation should be carried out generally as shown on the following diagram. 1) Manual gas va[...]

  • Page 15

    15 2.1.3 Gas connection The gas supply to this appliance must be installed in accordance with BS 6891 (1988) and British Gas Publications UP1 and UP2. Fit the 1/2” gas supply cock supplied with this unit immediately before the gas control. No heat or soldered joints should be applied in the vicinity of the gas control, as they could cause damage [...]

  • Page 16

    16 2.2 Commissioning 2.2.1 Filling the water heater 1. Close the drain tap. 2. Open the cold water tap to the water heater and open all taps where hot water can be drained for de aeration. The water heater is filled as soon as cold water flows from all taps. 3. Close all hot water taps. 2.2.2 Putting into operation 1. Check to see if the heater is [...]

  • Page 17

    17 2.3 Removing and replacing the control panel front cover Removing the cover (see figure 7) 1. Remove the screw at the top centre of the control panel. 2. Push the cover upwards until the hooks at the lower end clear the burner access opening and base tra y. 3. Pull the lower end of the cover slightly forward. 4. Pull the cover down until the top[...]

  • Page 18

    18 2.5 Mounting the inner door Mode of operation: (see figur 8). 1. Place the clips in the position on the inner door so the door can fullty stick into the opening. 2. Lift the door up and rotate it over the burner into position. 3. Pull the inner door against the inside of the skirt ring. 4. Rotate the clips into postion with a tool. Figur 8 Remov[...]

  • Page 19

    19 2.7 Converting to another type of gas For conversion of the appliance from natural gas to another type of gas, or visa versa, it is necessary to exchange the pilot injector and the main injector. The conversion may only be executed by a qualfied competent person. Procedure: 1. Shut the heater down. Close the main inlet gas valve and switch off t[...]

  • Page 20

    20 2.8.2 Cleaning 1. Close the gas supply and demount the burner after it has cooled down 2. Disconnect the burner assembly from the gas control 3. Remove the complete burrner assembly 4. Clean the burner with a soft brush 5. Check the pilot burner and clean it if so required 6. Check the combustion chamber, flue tube and flue baffle and clean thes[...]

  • Page 21

    21 3. FOR THE USER 3.1 Commisioning Warning Installing and commissioning of this wa- ter heater should only be carried out by a qualified competent heating engineer. 3.1.1 Filling the water heater 1. Close the drain tap; 2. Open the cold water tap to the water heater and open all taps where hot water can be drained for de aeration. The water heater[...]

  • Page 22

    22 3.2 Fault overview Gas smell If you smell gas you should immediately close the main gas tap, you should not fight any fire or switch on light. electrical switches or bels. Open windows and immediately contact your installer or the local gas company Heater is Burner automat is in lock Reset burner automat with the RESET off or condition button on[...]

  • Page 23

    23 4. WARRANTY The following conditions form the guarantee agreement between A.O. Smith Water Products Company (the warrantor) and the owner of the water heater. 4.1 Guarantee in general If within one year of the original installation date of the water heater any part or component other than the tank shall prove upon examination by the warrantor or[...]

  • Page 24

    4.6 Claims Any claims under this warranty should be initiated with the dealer who originally sold the water heater or with any other dealer or stockist of the warrantors products. 4.7 No other guarantee or warrantee either expressed or implied is made on behalf of A.O. SMITH Water Products Company With respect to the water heater in question furthe[...]

  • Page 25

    = brown = blue = yellow/green = black = white = red * = Optional APPENDIX 1 Connection diagram BTI models A = Ignition controller M = Remote button B = ON/OFF switch N = Terminal block C = Pilot burner P = Terminal block D = Spark electrode R = Earth terminals E = Flame probe S = Connector F = Transformer flame detection * T = Gas control valve G =[...]

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    0308 253 R0[...]