Table of Contents
Advertisement
Installation Manual
Unvented Indirect Water Heaters
Installation & Servicing Instructions
Pack Contents
• Unvented water heater incorporating immersion heater & thermal controls
• Factory fitted temperature/pressure relief valve (set at 90°C / 1 Mpa (10bar))
• Cold water combination valve assembly
• Tundish
• 2 Port motorised valve
• Compression nuts & olives
• Immersion heater spanner
• Installation & servicing instructions
• Guarantee card
IMPORTANT
Please read & understand all these instructions before commencing installation.
Please leave this manual with the customer for future reference.
1
Advertisement
Table of Contents
Summary of Contents for Jet 120i
- Page 1 Installation Manual Unvented Indirect Water Heaters Installation & Servicing Instructions Pack Contents • Unvented water heater incorporating immersion heater & thermal controls • Factory fitted temperature/pressure relief valve (set at 90°C / 1 Mpa (10bar)) • Cold water combination valve assembly • Tundish • 2 Port motorised valve • Compression nuts &...
-
Page 2: Table Of Contents
Contents Introduction The cylinder is a purpose designed unvented water heater. The unit has a stainless steel inner vessel, Introduction ............2 which ensures an excellent standard of corrosion resistance. The outer casing is a combination of General Requirements .......... 3 resilient thermoplastic mouldings and plastic coated corrosion proofed steel sheet. -
Page 3: General Requirements
- recommended minimum water pressure General Requirements 0.15MPa (1.5 bar). Max water pressure IMPORTANT: This appliance can be 1.6MPa (16 bar), see page 4 for details. used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of WARNING: Do not switch on if there is a experience and knowledge if they have... - Page 4 Water Supply Limitations Bear in mind that the mains water supply to the The cylinder should not be used in association property will be supplying both the hot and cold with any of the following: water requirements simultaneously. • Solid fuel boilers or any other boiler in which the energy input is not under effective thermostatic It is recommended that the maximum water demand control, unless additional and appropriate safety...
-
Page 5: Installation General
Installation General Secondary Circulation If secondary circulation is required it is recommended Pipe Fittings that it be connected to the cylinder as shown (see All pipe fittings are made via 22mm compression Fig. 06, page 11) via a swept tee joint into the cold fittings directly to the unit. - Page 6 Hot Outlet T&P Valve Primary Flow Cold Inlet Primary Return Fig. 03: General Dimensions Model Dimensions (mm) Reference 120 Ind 150 Ind 1114 170 Ind 1241 210 Ind 1499 1184 250 Ind 1752 1379 300 Ind 2065 1694 Table 01: Dimensions...
- Page 7 Max direct kW rating Immersion heat up times (Btm immersion, 3kW) Coil surface area (m²) 0.51 15l/min 33.1 30.4 43.0 45.1 52.8 68.7 Coil heat up times 30l/min 26.9 30.2 34.8 37.7 46.7 57.9 45/min 25.0 28.8 32.3 34.2 41.7 51.0 15l/min 13.1...
-
Page 8: Installation Discharge
Tundish Installation Discharge 3.54 The tundish should be vertical, located in the same space as the unvented hot water storage system Discharge Pipework and be fitted as close as possible to, and lower than, It is a requirement of Building Regulation G3 that the valve, with no more than 600mm of pipe between any discharge from an unvented system is conveyed the valve outlet and the tundish (see Fig 04 page 9). - Page 9 Worked Example of Discharge Pipe Sizing 3.60 The discharge pipe should not be connected to a soil discharge stack unless it can be demonstrated that the soil discharge stack is capable of safely Fig. 04: shows a G1/2 temperature relief valve with a withstanding temperatures of the water discharged, discharge pipe (D2) having 4 No.
- Page 10 MAXIMUM RESISTANCE MINIMUM RESISTANCE VALVE MINIMUM SIZE OF ALLOWED, EXPRESSED SIZE OF CREATED BY OUTLET DISCHARGE PIPR AS A LENGTH OF DISCHARGE EACH ELBOW SIZE D2 FROM TUNDISH STRAIGHT PIPE (I.E. NO PIPE D1 OR BEND ELBOWS OR BENDS) 22mm UP TO 9M 0.8M G 1/2...
- Page 11 Cold water To hot outlets T&P relief combination valve valve Isolating valve (not supplied) Blank housing (dependant on model) Mains water supply Immersion/ controls housing Balanced cold Secondary return water connection (if required) Primary return (if required) use swept tee Primary flow Drain cock Discharge...
-
Page 12: Installation Indirect
Boiler Selection Installation - Indirect The boiler should have a control thermostat and non self-resetting thermal cut-out and be compatible Safety with unvented storage water heaters. Where use of a boiler without a thermal cut-out is unavoidable a DISCONNECT FROM THE MAINS ELECTRICAL “low head”... - Page 13 Cylinder terminal block 1 2 3 Zone valve (DHW) Zone valve (HTG) Room stat (supplied) Br Bl Br Bl 1 3 2 (Supply) 3 4 5 6 7 8 9 10 Junction box 1 2 3 4 5 6 7 8 9 10 Programmer Boiler Pump...
-
Page 14: Commissioning
Commissioning Benchmark Log Book On completion of the installation and commissioning procedures detailed in this manual the Benchmark Filling The Unit With Water Installation, Commissioning and Service Record Log, Ensure that all fittings and immersion heaters are pages 20 and 21 should be completed and signed correctly fitted and tightened. -
Page 15: Maintenance
If necessary the temperature can be adjusted by Maintenance inserting a flat bladed screwdriver in the adjustment knob on front of the immersion heater thermostat and rotating. The adjustment represents a temperature Maintenance Requirements range of 12°C to 72°C. Check the operation of Unvented hot water systems have a continuing thermostat(s) and that no water has issued from the maintenance requirement in order to ensure safe... -
Page 16: User Instructions
User Instructions Temperature Controls - Indirect Units The cylinder units are fitted with an indirect thermostat and thermal cut-out. These controls must be wired in Warnings series with the 2 port motorised zone valve supplied I F W A T E R D I S C H A R G E S F R O M T H E to interrupt the flow of primary water around the TEMPERATURE/PRESSURE RELIEF VALVE ON heat exchanger coil when the control temperature... -
Page 17: Fault Finding & Servicing
Spare Parts Fault Finding & Servicing A full range of spare parts are available for the cylinder range (Table 05, page 18). Refer to the Important technical data label on the unit to identify the model • After servicing, complete the relevant Service installed and ensure the correct part is ordered. -
Page 18: Spares
Fig. 11: Indirect Cylinder Spares Spares Item Description Part Number Num- Immersion heater ( lower ) 95 606 984 Immersion heater gasket 70 351 65 Immersion heater backnut 95 607 869 Immersion heater key 95 607 861 spanner Tundish (not shown) 95 605 838 Cold water combination 70 365 20... -
Page 19: Heat Loss
Heat Loss Environmental WEEE Declaration Nominal Standing Heat Loss Capacity Disposal of Waste Equipment by Users in Private (Litres) per day per year Household in the European Union. (kWh/24h) (kWh/365d) 1.36 1.52 1.68 1.93 2.16 This symbol on the product indicates that this 2.57 product must not be disposed of with your other household waste. -
Page 20: Commissioning Check List
MAINS PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of demonstrating compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission this equipment to the manufacturer’s instructions may invalidate the warranty but does not affect statutory rights. -
Page 21: Service Record
SERVICE RECORD It is recommended that your hot water system is serviced regularly and that the appropriate Service Record is completed. Service Provider Before completing the appropriate Service Record below, please ensure you have carried out the service as described in the manufacturer’s instructions. SERVICE 01 SERVICE 02 Date:... - Page 22 Notes...
- Page 23 Notes...
-
Page 24: Guarantee
For all technical support and replacement parts issues please contact: Brooks House Coventry Road Warwick CV34 4LL Tel: 0344 871 1532 The policy of JET is one of continuous product development and, as such, we reserve the right to change specifications and guarantee terms and conditions without notice. 7036515_issue_03...