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PLEASE LEAVE THIS MANUAL WITH THE OSO UNIT AFTER INSTALLATION
INSTALLATION MANUAL
This manual gives detailed advice for installation and should be read carefully
prior to fitting any unvented unit.
This OSO cylinder must be installed by a competent person and be installed in
compliance with the OSO Installation and Maintenance Instructions, all current
legislation, codes of practice and regulations governing the installation of
unvented hot water cylinders in force at the date of installation.
Components supplied with the unit for site fitting
(See also page 2 for component list)
Multibloc valve, includes pressure reducing valve, line strainer, balanced cold water take off,
*
(for shower or bidet only) check and expansion valve.
Tundish
*
1/2''F x 15 x 15 tee piece.
*
Flexible hose.
*
3/4'' x 22mm Elbow / Drain Cock.
*
Commissioning valve, 1/2'' BSP male.
*
Motorised valve.
*
2 x 1/2'' BSP male solar sensor pockets.
*
Components factory fitted
Immersion heater.
*
Thermostats / thermal cut-out.
*
Temperature and pressure relief valve.
*
Installation details
The OSO unvented unit is designed for use with supply pressure up to 16 bar. For pressures over
16 bar an additional pressure reducing valve must be fitted in the supply pipe to the unit.
SOLARCYL
Health and Safety
Manual Handling Operations Regulations 1992 defines
manual handling as: "any transporting or supporting of
a load (including the lifting, putting down, pushing,
pulling, carrying or moving thereof) by hand or bodily
force". The Regulations set no specific requirements
such as weight limits. However common sense still has
to be used based on an ergonomic approach for each
individual.
DIMENSION AND WEIGHTS TABLE 1
CAPACITY LITRES
HEIGHT
1400
DIAMETER
WEIGHT EMPTY
MAX WEIGHT FULL
COIL RATING KW
UPPER COIL
LOWER COIL
-1-
IM/SC2
210
250
330
1600
2090
580
580
580
60
64
82
261
303
397
12
12
18
12
26
26
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Table of Contents
Related Manuals for OSO SOLARCYL
Summary of Contents for OSO SOLARCYL
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Page 1: Installation Manual
UPPER COIL LOWER COIL Installation details The OSO unvented unit is designed for use with supply pressure up to 16 bar. For pressures over 16 bar an additional pressure reducing valve must be fitted in the supply pipe to the unit. - Page 2 General Layout Fig: 1 SOLAR INDIRECT SOLAR DIRECT CUTAWAY Twin Coil Single Immersion Heater Single Coil Twin Immersion Heater 11,12 11,12 Part No Part No Return 3/4’’ BSP Boiler Flexible Hose 202108 Return 3/4’’ BSP Solar Secondary / Return 1/2” BSPF Fit 1/2'' F x 1/2'' M x 15mm Tee piece Flow 3/4’’...
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Page 3: Cold Water Supply
COLD WATER SUPPLY To obtain the best performance from your OSO unvented system it is advisable to feed the unit with an uninterrupted supply. Locate the water heater in a suitable position to facilitate the installation of the cold water supply, discharge fittings and pipework. -
Page 4: Safety And Maintenance
(Turn knob to left.) Draining Switch the electrical power off (important to avoid damage to element). Isolate boiler from OSO unit. Turn off the cold water supply valve. Open hot water tap. Open drain (13). The unit will drain. -
Page 5: Installation And Servicing Instructions
Hot water discharge from tundish This indicates a malfunction of a thermal cut-out, operating thermostat or the combined temperature and pressure relief valve. Turn off the electrical supply to the immersion heater and also isolate an indirect unit from the boiler. Contact the installer or competent engineer. INSTALLATION AND SERVICING INSTRUCTIONS Cold water inlet control (Multibloc) See Page 2 Items 3 - 4 This combination consists of a pressure reducing valve with integral strainer, check valve and... -
Page 6: Maintenance
MAINTENANCE It is recommended that annually a competent person (a) Inspects and cleans the line strainer. (b) Checks the operation of the expansion relief valve and temperature & pressure relief valve. (c) Recommissions the cylinder in accordance with the instructions on page 4. Pressure reducing valve Expansion relief cartridge Isolate the cold water supply. -
Page 7: Electrical Installation
To comply with regulations governing the installation of indirect unvented cylinders, a motorised valve must be fitted in the primary flow. Your OSO unit has been supplied with a two port motorised valve, which will act as a positive energy cut-out should the safety cut-out operate. The motorised valve will also control the temperature of the domestic stored water via the cylinder thermostat, which is located in the upper electrical box. - Page 8 S Plan Wiring Layout UPPER ELECTRICAL BOX For Other Boilers Refer To Boiler Manufacturer The wiring plan shown is based on the use of a 10-way Junction Box (Honeywell Part no. 42002116-001) Junction Box terminal 10 is switched live and, if needed, terminal 9 is pump live.
- Page 9 S Plan System Schematic FIGURE 1 Honeywell FIGURE 2 ST 6400 Mains Programmer 7 day HTG Valve Honeywell V4043H ST 6300 Programmer 24 Hr Sensor FIGURE 3 Collector Thermostat DHW Valve Pocket ST 6360 V4043H Room stat Sensor Pocket Thermostat FIGURE 4 SCHEMATIC - LOWER ELECTRICAL BOX Cylinder...
- Page 10 Y Plan Wiring Layout UPPER ELECTRICAL BOX For Other Boilers Refer To Boiler Manufacturer The wiring plan shown is based on the use of a 10-way Junction Box (Honeywell Part no. 42002116-001) Junction Box terminal 8 is switched live and, if needed, terminal 10 is pump live. -10-...
- Page 11 Y Plan System Schematic FIGURE 1 FIGURE 2 Honeywell ST 6400 Mains Programmer 7 day Honeywell V4073A1039 ST 6300 Programmer 24Hr Sensor FIGURE 3 Collector Sensor DHW Valve Pocket ST 6360 V4043H Room stat Sensor Pocket Thermostat FIGURE 4 SCHEMATIC - LOWER ELECTRICAL BOX Cylinder Sensor Solar Controller...
- Page 12 OSO FAULT FINDING GUIDE FAULT POSSIBLE CAUSE REMEDY No water flow from hot taps 1. Mains supply off. 1. Check and open stopcock 2. Strainer blocked. 2. Turn off water supply. Remove strainer and clean. (See Pressure Reducing Valve page 6 Installation Manual) 3.
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Page 13: Intermittent Water Discharge
OSO FAULT FINDING GUIDE Intermittent water discharge Reduced Internal Thermal control expansion volume failure Recharge “air gap”. Switch off power to Follow correct immersion heaters and procedure boiler supply to the unit. When discharge has stopped check thermal controls and replace as... -
Page 14: Excessive Hot Water From Taps
OSO FAULT FINDING GUIDE Hot water from taps is cold Activate boiler Low solar gain Is the Is the boiler Insufficient hot water programmer set to working? when boiler is used central heating or not switched on? Remove hot water dip pipe and... - Page 15 INCREASED VOLUMES AND HIGH PRESSURE OPERATION The capacity of all OSO cylinders can be increased by approximately 20% if the internal hotwater dip pipe supply connection (see page 2 part no 20) is removed by unscrewing the hot supply connection. On a Solarcyl, the increased capacity can also make a significant difference to the...
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Page 16: Secondary Return
Non Return Valve Circulation Pump Secondary Return Line Balanced cold supply for showers or bidet only All replacement parts must be supplied by OSO HOTWATER (UK) LIMITED. To obtain the address of a local stockist contact: OSO HOTWATER (UK) LTD www.oso-hotwater.com...