The best maximum-power test conditions for the heating system are when the selector “C” is turned to the flue analysis setting. The discharge/ventilation of the exhaust fumes can be monitored to check for losses in general pressure in the system. This is done to eliminate the cause of lighting failure with the main burner not indicated by a shutdown status. With a differential manometer connected to the test socket on the combustion chamber, the DP value for the air pressure switch can be taken.

47-116-10 / 47-116-12 Installation Instructions Type C Boilers LEAVE THESE INSTRUCTIONS ADJACENT TO THE GAS METER Country of destination: GB TABLE OF CONTENTS 1. GENERAL INFORMATION 1.1 General Instructions 1.2 Technical Information 1.3 Overall View 2. INSTALLATION 2.1 Reference Standards 2.2 Siting the Appliance 2.3 Overall Dimensions 2.4 Clearances 2.5 Mounting the Appliance 2.6 Electrical Connection 2.7 Gas Connection 2.8 Water Connections 2.9 Flue Connection 2.10 Room Thermostat Connection 2

The discharge/intake vent pipes must have the same diameter of o 80 mm. 2. The maximum combined flue length is 17 m. In this case the minimum length for the air intake pipe is 1 meter; the maximum length of vertical exhaust pipe must be a maximum of 12 m. 3. If an elbow is inserted into the discharge/ventilation system, the calculation of the overall extension must take into consideration the values for each curve, as indicated in the table. 4. The exhaust pipe must extend at least 0.5 m above t

6 B023 B023 7 Legend: A = Central Heating Flow (3/4”) B = Domestic Hot Water Outlet (1/2”) C = Gas Inlet (3/4”) D = Domestic Cold Water Inlet (1/2”) E = Central Heating Return (3/4”) 2.3 Overall Dimensions 890 365 (A-B-D-E) (C) 465 In order to allow for access to the interior of the boiler for maintenance purposes, the boiler must be installed in compliance with the minimum clearances indicated in the diagram below. 400 300 450 60 60 40 50 60 70 80 C C 2.4 Clearances A/23 MFFI - A/27 MFFI Fig. 2

INSTALLATION 2.1 WATER REGULATIONS 2.2 BUILDING REGULATIONS 2.3 HOW THE APPLIANCE WORKS 2.4 OVERALL DIMENSIONS 2.5 COLD WATER SUPPLY 2.6 SITING AND FIXING 2.7 CONNECTION OF MAINS WATER SUPPLY 2.8 COLD WATER COMBINATION VALVE 2.9 CONNECTION TO SERVICES 2.10 SECONDARY RETURN 2.11 DISCHARGE PIPEWORK 2.12 ELECTRICAL DIAGRAMS 3. COMMISSIONING 4. MAINTENANCE 4.1 PROTECH ANTI-CORROSION SYSTEM 4.2 THERMAL CUT-OUT(S) 4.3 IMMERSION HEATER(S) 4.4 UNVENTED CONTROLS 4.5 THERMOSTATS 4.6 MAINTENANCE 5. FAULT F

Note: a lower setting is more economical, and reduces the risk of scalding. CAUTION: Call a technician if the high limit needs to be reset frequently. Troubleshooting Water does not get hot Light not on Brown water Odor in water Water is too hot Water not hot enough Leaking 1. Make sure the power supply is on and working. 2. If light does not come on, check that the reset button is pushed in; follow steps from previous section. 3. If the indicator light works properly but temperature does not ge

Comply with the installation instructions before completing electric connection. The thermostat has been pre-set at the factory at or below 51.7 °C (125° F). Hydrogen gas can be produced in a hot water system served by this heater that has not been used for a long period of time (generally 2 weeks or more). Hydrogen gas is extremely flammable. To reduce the risk of injury under these conditions, it is recommended that the hot water faucet be opened for several minutes before using any electrical

The model GL8Ti can be piped horizontally from the side or vertically from the top. If you wish to install the unit horizontally, with the piping connections on the right side, you will have to be certain the tap between the two water tappings is plugged, the supplied Temperature and Pressure Relief Valve will need to be installed on top. See location of T&P relief valve in Fig. 2/2. If you wish to install the unit vertically, with the piping connections on top, you will have to be certain the t

3. Remove and replace the anode rod N Fig. 5/2. 4. Refill tank with water before restoring power. Changing the heating element Changing the thermostat Resetting High Limit Switch 1. Turn off power supply and drain the heater (see Draining the Heater). 2. Remove the heating element (see section on Removing the Heating Element). 3. Install new element with gasket, making sure the gasket and element are positioned correctly. Tighten the retaining nuts and make the wire connections. 4. Refill tank w