UNVENTED CYLINDER RANGE
UNVENTED WATER STORAGE CYLINDER No longer than every 12 months, the magnesium anti-corrosion anodes should be checked by your service engineer/installer. Installation and Users Guide IMPORTANT Please read these instructions carefully before installing the cylinder. Failure to do so may invalidate the Warranty WATER BYELAWS These bye-laws ensure a good supply of wholesome water, and that only approved materials, pipes and fittings are used to convey water.
The Comfort is supplied with the following; Hot and cold water are both drawn off the same source of supply. Remember, there will not be a storage tank to help compensate for variations in the demand on the system. One large box containing; 1) The unit with factory fitted Temperature & Pressure Relief Valve. 2) Factory fitted Immersion Heater (Dry pocket). 3) Factory fitted Cylinder Thermostat. 4) Feet x 3. A minimum pressure of approximately 1.
SECONDARY RETURN On Floor-standing models a Secondary Return may be fitted. On Contract and Comfort models via the special port on the side of the cylinder (consult the label on the face of the unit for the correct location), for 300 and 500 litre models refer to fig. 6. A Non Return Valve (not supplied) must be fitted to prevent back flow and a Bronze Pump will be needed in conjunction with a Pipe Thermostat to circulate the hot water (both not supplied).
FAULT FINDING 3) Close taps in turn after having purged the system of air. 4) Check for leaks around the controls and Immersion Heaters and again after the unit has heated up. 5) Check that no water is passing to waste through the relief valves. FAULT POSSIBLE CAUSES REMEDY 1) Mains Cold Water supply shut off Check and open Isolating and/or Stop Valve.
FIG. 1 MODELS CONTRACT STD 100-125-150-210 DIRECT TECHNICAL DATA For the full specification of each unit pleae consult the labels atteched to the side of the unit. Max Water supply Pressure 12.0 bar Operating Pressure 3.5 bar Expansion Vessel Charge Pressure 3.5 bar Expansion Valve Setting 6.0 bar Pressure And temperature relief valve 7.0 bar / 90° C Immersion Heater Rating for Each Heater 3000 W - 240 V. Pressure Reducing valve set pressure 3.
FIG. 2 MODELS CONTRACT - COMFORT STI 125 - 150 - 210 INDIRECT FIG. 3 MODELS ST 50 - 80 - 100 PRESSURE + TEMPERATURE RELIEF VALVE COLD MAINS-IN 22 mm (15 mm ST 50) EXPANSION VESSEL HOT SUPPLY 22mm (15 mm ST 50) COMBINATION VALVE EXPANSION RELIEF PIPE TUNDISH 28 mm MAX. 100 mm MAX.
FIG. 3A MODEL STDI 300 DIRECT MAX. 100 mm FIG. 3B MODEL STT 300 INDIRECT MAX.
FIG. 3C MODEL 500 ST6 DIRECT MAX. 100MM FIG. 3D MODEL 500 STT6 INDIRECT MAX.
FIG. 4 COLD WATER COMBINATION VALVE 3/4” 3/4” B.S.P. CONNECTION FOR EXPANSION VESSEL FIG. 5 COLD WATER COMBINATION VALVE 1/2” SERVICEABLE 1/2 PRESSURE REDUCING CARTRIDCE AND LINE STRAINER NON-RETURN VALVE (WITHIN HOUSING) 22 mm COLD MAINS IN 3.5 6 BAR SERVICEABLE 3/4 PRESSURE REDUCING CARTRIDGE AND LINE STRAINER (SET AT 3.
FIG. 6 300L AND 500LONLY y , , y , y , y , y , y FIG. 7 SUGGESTED WAYS OF TERMINATING DISCHARGING PIPES SAFETY Temperature & pressure relief valve Metal discharge pipe (D1) from temperature & pressure relief valve. to tundish. Tundish 500 mm Max. FROM BRONZE PUMP 300 mm Min. SECONDARY RETURN Metal discharge pipe (D2) from tundish with continuous fall. See Table 2 and worked example. NON-RETURN DRAIN Discharge below fixed grating. (see page 6 for alternative points of discharge).
FIG. 8 RECOMMENDED ECONOMY 7 SYSTEMS FIG. 9 a) SINGLE ELEMENT RECOMMENDED ECONOMY 7 SYSTEMS SYSTEM A THERMAL CUT-OUT THERMOSTAT DAY ELEMENT 3 KW L1 N 240 V THE IMMERSION HEATER SHALL BE INSTALLED WITH 85°C RUBBER INSULATED HOFR-SHEATHED FLEXIBLE CORDS COMPLYING WITH TABLE 8 OF BS 6141 : 1981 THE FOLLOWING DRAWING MUST BE REFERRED TO BEFORE THE SIDE MOUNTED IMMERSION HEATER IS REPLACED. PIPES SYSTEM B THERMOSTAT POCKET WALL DIAG.
THERMOSTAT MOUNTED ON THE TOP DIAG. 4A - 24 - THE IMMERSION HEATER SHALL BE INSTALLED WITH 85°C RUBBER INSULATED HOFR-SHEATHED FLEXIBLE CORDS COMPLYING WITH TABLE 8 OF BS 6141 : 1981 THE FOLLOWING DRAWING MUST BE REFERRED TO BEFORE THE SIDE MOUNTED IMMERSION HEATER IS REPLACED.
1 2 P 1 Thermal cut-out P 1 8 P 6 2 Not used N 240V MAINS INPUT (13 AMP) - 26 1 1 1 1 Landis & Gyr RWB2 Glowworm Mastermind L1 240V~ N Landis & Gyr RWB20 Microgyr Potterton Miniminder Potterton EP2000/3000 Link L-5 EP2001/3001 Thermal cut-out L Thermostat ELEMENT 3 KW 240V~ E N N N 5 E E E 4 E 4 4 4 2 2 1 E 8 4 3 N 7 N 4 N 4 PROGRAMMER 1 8 1 Sangamo 410 Form 1 Link 3-6 2 3 4 Randall 701, 702 Link L-6-5 4 5 Randall 4033 Link 1-6 1 3 3 3 3 1 3 L 6 6 L L L L L
Guarantee We, MTS, guarantee that should this water heater prove to be defective by reason of faulty workmanship or material during the periods stated below, we will replace the defective parts (or product) free of charge on the condition that : • The appliance has been correctly installed by a competent installer and used only on the supply voltage stamped on the rating plate.
