Summary of Contents for MHS Boilers TUDOR NHRE Series
- Page 1 T U D O R N H R E R A N G E O F D I R E C T G A S F I R E D W AT E R H E AT E R S I N S T R U C T I O N S F O R I N S TA L L AT I O N , S E R V I C I N G &...
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Page 2: Table Of Contents
TUDOR NHRE TUDOR NHRE contents page section 2 ...1.0 General Notes Water Byelaws Building Regulations Product Approvals Product Description 3 ...6.0 Key Points 4 . -
Page 3: General Notes
TUDOR NHRE 1.0 general notes These instructions are intended to assist the installer, commissioning engineer and maintenance engineer with the installation and maintenance of Tudor NHRE Direct Gas Fired Water Heaters. Please read this manual fully before commencing installation of the appliance. Tudor NHRE Water Heaters must only be installed and maintained by persons deemed to be competent IE: Corgi Registered. -
Page 4: Key Points
TUDOR NHRE 6.0 key points CE marked - 0049 AR 10 50 Each Tudor NHRE water heater has been tested and approved to meet the specified requirements of European Standards on performance, efficiency, safety and quality. 0049AR 10 50 high grade materials A heavy gauge, welded steel body with a Class "A"... -
Page 5: Specification For Tudor Nhre
TUDOR NHRE TUDOR NHRE 7.0 specification for Tudor NHRE All Tudor NHRE water heaters are manufactured at a facility that is certified to ISO 9001. Each appliance is thoroughly inspected and tested at each stage of production to ensure that the finished product is of the highest quality. -
Page 6: Delivery Consignment
8.1 handling & storage Tudor NHRE series water heaters must be stored upright in their original packaging in a dry and clean environment to avoid any damage or deterioration to the product prior to installation. The installers attention is drawn to the weight of the appliance - (see section 11) and sufficient persons must be employed ( if being manually handled) to avoid injury to persons and damage to the product during moving and handling operations. -
Page 7: Single Water Heater Dimensional Data
TUDOR NHRE 10.0 single water heater dimensional data NHRE 18 NHRE 26, 36, 60 NHRE 90 side view section side view section side view section Draught Divertor Draught Divertor 1" Connections Drawoff " Insulating Flueways Draught Jacket Divertor Flueway Flueways 1"... -
Page 8: Technical Data
15ºC to 78ºC (thermostat cut out) and took 11 minutes to reheat 70 % of the contents of the appliance back to 78ºC. 12.0 installation requirements Tudor NHRE series water heaters must be installed as appropriate with the relevant requirements of: Water Supply (Water Fittings) Regulations CP 342: Part 2: 1974 Building Regulations BS 6644: 1991 Gas Safety (Installation &... -
Page 9: Gas Connection
TUDOR NHRE TUDOR NHRE 13.0 ventilation requirements It is important to ensure that an adequate supply of fresh air for combustion and general plant room ventilation is provided. The following requirements for ventilation must be met: Natural Ventilation Direct to Outside Air Model High Level Free Area cm Low Level Free Area cm... -
Page 10: Flue Connection Draught Divertor Assembly
TUDOR NHRE TUDOR NHRE 16.0 flue connection draught divertor assembly The draught divertor supplied with the appliance must be installed following carefully the instructions supplied in the carton with the specific draught divertor. The flue spillage detection safety device must also be correctly installed following the instructions supplied with the draught divertor. -
Page 11: Water Systems
TUDOR NHRE TUDOR NHRE 18.0 water systems Tudor NHRE Water Heaters are suitable for connection to vented, unvented or boosted water supply systems. In each case, appropriate valves and fittings should be used to ensure compliance with the requirements of the water byelaws and as appropriate, the Building Regulations. -
Page 12: Unvented Or Boosted Feed Systems
Byelaws scheme approved kit of safety devices, valves and fittings complying with BS7206:1990 and satisfying the requirements of Building Regulation G3, available from MHS Boilers Ltd must be installed to protect the system and prevent water temperature from exceeding 100º C. The kit of parts includes as a minimum (see check list of components 18.4), a suitably sized expansion vessel with air change preset at... -
Page 13: Unvented Installation Component Check List
TUDOR NHRE typical installation schematic two Tudor water heaters serving unvented hot water system Isolation Isolation Valve Valve Secondary Circulation Pump Temperature Temperature & Pressure & Pressure Relief Valve Relief Valve Isolation Valve Isolation Valve Core Assembly Core Assembly with Integral with Integral Non Return Valve Non Return Valve... - Page 14 TUDOR NHRE Wall mounting bracket for 25 litre expansion vessel. BRKS 240 024 3/4” BSP expansion vessel connection hose x 1000mm HOSE 202 106 3/4” MI BSP inlet/22mm relief connection temperature & pressure safety relief valve with 230mm probe. Set 7.0 bar &...
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Page 15: Unvented Systems-Terminating Safety Discharge Pipes
TUDOR NHRE 18.5 unvented systems- terminating safety discharge pipes Metal discharge pipe (D1) from temperature relief valve to Tundish safety device (e.g. temperature relief valve) Tundish 500 mm Max 300 mm Min Discharge below fixed grating (18.5d gives alternative Metal discharge pipe (D2) points of discharge) from tundish, with continuous fall. - Page 16 TUDOR NHRE • Maximum resistance allowed fro a straight length of 35mm pipe (D2) from G 3/4 T&P valve equates to: 18m. • Subtract the resistance for 4 no. 35mm elbow at 1.4 each = 5.6m. • Therefore the maximum permitted length equates to: 14.4m •...
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Page 17: Anti Stratification System
If the specific installation has a water capacity greater than can be accommodated by this (standard) expansion vessel supplied with the water heater, then additional expansion vessels must be installed. Contact MHS Boilers Ltd for advice and guidance on selection of additional expansion vessel/s. Water Heater Model... -
Page 18: Filling The Water Heater/ Commissioning The Water System
TUDOR NHRE 18.8 filling the water heater/ commissioning the water system It is important to ensure that all pipework is flushed to avoid the damage that foreign particles could do to control valves, this is particularly important where installation is unvented. Open all outlet taps. -
Page 19: Detail Of Burner Assemblies
TUDOR NHRE 19.0 detail of burner assemblies NHRE 90 thermocouple pilot pilot burner burner assembly body ignition electrode all-gas primary air filter burner fastening injectors pilot burner fastening screw pilot flame injector ignition stop piezoelectric button button ignitor burner restrictor pressure tapping location fig.9... -
Page 20: Burners, Injectors, Burner Pressure
TUDOR NHRE 19.1 burners, injectors, burner pressure & gas consumption data CATEGORIE: II 2H + 3P ENGLAND Gas Type Current Designation Nat Gas Propane Reference group H - G20 Net calorific value (15ºC/1013 mbar) 34.02 MJ/m 46.34 MJ/m Nominal Supply Pressure (mbar) Diameter Pressure Diameter... -
Page 21: Setting The Appliance To Work
TUDOR NHRE 20.0 setting the appliance to work 20.1 NHRE 18 initial start-up Ensure that the tank is full of water (very important). Open the gas supply valve to the appliance. (When using for the first time, or after extended stoppage, ensure the gas supply is properly purged of air) Turn on the power supply. - Page 22 TUDOR NHRE 20.2 NHRE 26-90 initial start-up Ensure the tank is full of water (very important). Open the gas supply valve to the appliance. Turn the equipment on. (When using for the first time, or after extended stoppage, ensure the gas supply is properly purged of air). Ignition Press and hold in the WHITE control button (1) which opens the gas block safety valve gate enabling gas flow to the pilot flame.
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Page 23: To Turn Off The Appliance
TUDOR NHRE 21.0 to turn off the appliance 21.1 NHRE 18 Turn gas control (1) to position (stop) see figure 11. 21.2 NHRE 26-90 Press the red button on the gas valve (2) see figure 12. Turn off the appliance by pressing the on/off button (6) see figure 12 and important note in 21.3. 21.3 extended shutdown periods In addition to 21.1 or 21.2 above:... -
Page 24: Descaling The Tank
TUDOR NHRE 22.2 descaling the tank In hard water areas it is recommended to frequently inspect the interior of the tank and descale with a high pressure hose or where heavily scaled, this should be done using suitable scale removing chemicals. It is recommended that chemical descaling be carried out by a specialist descaling company. -
Page 25: Notes On Water Quality
TUDOR NHRE 23.0 notes on water quality Where the feed water is hard, an efficient polyphosphate crystal base type scale reducer is recommended to be installed. Where the water heater is to be supplied with water from a water softener, it is a strict requirement that the TH is between 120 - 150 ppm and the pH is not less than 7. -
Page 26: Guarantee
TUDOR NHRE 26.0 guarantee The Tudor NHRE range of gas fired water heaters carry the following guarantee against defects in material or manufacturing process: Tank : 3 Years All other components: 1 Year. 27.0 exploded diagram... -
Page 27: Parts List
TUDOR NHRE 28.0 parts list... - Page 28 QW/0202/4676 A member of the Modular Heating Group Plc 35 Nobel Square, Burnt Mills Industrial Estate, Basildon, Essex SS13 1LT Tel: 01268 591010 Fax: 01268 728202 http://www.modular-heating-group.co.uk This publication is issued subject to alteration or withdrawal without notice. The illustrations and specifications are not binding in detail. All offers and sales are subject to the Company's current terms and conditions of sale.
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