Table of Contents
Related Manuals for Hamworthy DORCHESTER DR35L
Summary of Contents for Hamworthy DORCHESTER DR35L
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Page 1: Hot Water
DORCHESTER DR35L to DR90L-CE HOT WATER STORAGE HEATERS Installation, Commissioning and Maintenance Instructions IMPORTANT NOTE THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT... - Page 2 Customer Services Technical Enquiries 01202 662527/662528 To supplement the detailed technical brochures, technical advice on the application and use of products in the Hamworthy Heating range is available from our technical team in Poole and our accredited agents. Site Assembly 01202 662555 Hamworthy offer a service of site assembly for many of our products in instances where plant room area is restricted.
- Page 3 DORCHESTER DR35L to DR90L-CE HOT WATER STORAGE HEATERS Installation, Commissioning and Maintenance Instructions NOTE: THESE INSTRUCTIONS MUST BE READ AND UNDERSTOOD BEFORE INSTALLING, COMMISSIONING, OPERATING OR SERVICING EQUIPMENT. THIS HEATER IS FOR USE ON 2nd FAMILY GASES ONLY. PLEASE ENSURE RELEVANT INFORMATION REQUIRED WITHIN DOCUMENT IS FOUND RELATING TO SPECIFIC GAS TO BE FIRED BEFORE FIRING HEATER.
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Page 4: Table Of Contents
Water Draw Off System Checks 9.0 GAS PIPEWORK INSTALLATION 10.0 ELECTRICAL CONNECTION - HEATER 11.0 CONTROL SYSTEM 11.1 Control Thermostat 11.2 Limit Thermostat 12.0 COMMISSIONING 12.1 Checks 12.2 Procedure for Lighting 12.3 Combustion Checks Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... - Page 5 15.8 Storage Tank Thermostat 15.9 Loading Pump 15.10 Operation 15.11 Servicing FIGURES PAGE Figure No. 1 Sectional View DR35L-90L Water Heater Figure No. 2 Dimensioned Views Figure No. 3 Installation - Single DRL Heater Figure No. 3A Installation - Multiple DRL Heaters Figure No.
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Page 6: Introduction And Delivery
The interior vessel of the heater consists of a fully welded, convexed bottomed, pressure tested, storage vessel which is thermoglazed with a high quality glass Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 7: British Gas Publications
BS 3456 - The testing and approval of domestic electrical appliances Part 1 Clause 27.3. 3.3 British Gas Publications IM/2 - Purging procedures for non-domestic gas in- stallations. Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 8: Gas Supply
The air supply requirements air must be ducted from a space where vapours are specified in BS 6644 are summarized as follows:- not present. Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 9: Water Pipework Installation
LI, N and earth. The earth wire should be so cut that it is longer than the live and neutral wires to comply with the require- Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 10: Control System
The system is vented fully charged with water pressure test point. Relight the burner and check and ready to receive heat. that no waste gas spillage occurs from any draught diverter. Check operation of control thermostat by Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 11: Combustion Checks
Piezo cable (possible fracture) and the spark electrode (possible crack in ceramic) and replace Remove the three core power supply lead to the gas as necessary. valve as follows:- Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 12: Cleaning Flue Gas Passageways
Replace the insulation disc over the inspection door exterior (blue) casing panel of the inspection door. flange and refit the exterior casing panel with the four screws. Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... -
Page 13: Recommended Spares
15.3 Assembly of Thermostats B2N and B3N 15.0 STORAGE TANKS (reference Fig. 4). The Dorchester range of DRL Water Heaters can be coupled to one or more storage tanks on installa- When a storage tank is coupled to the heater pump... -
Page 14: Pipework Schemes
- reference terminals 14 and 9, Fig. 4. The wiring should also include an earth connection back to the heater terminal rail. 15.8 Storage Tank Thermostat. The thermostat in the Storage Tank - ref. Fig. 4 - Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G... - Page 15 Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
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- Page 21 (not switched off during weekends, holiday periods etc.). Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
- Page 22 Refit control box cover and cover of the control box and the second cover (ref thermostat knob. figure 2 on page 4). Remove terminal plug (4) (ref figure 2). Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
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- Page 26 (see 3 above). At this ply point. inlet pressure, the burner input will be correct. TABLE 1 - GAS INLET PRESSURES Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
- Page 27 Description 531907007 Honeywell multifunctional gas control valve ¾ V4410C modified to V4401D for LPG for DR35L CE – 90L CE p/pilot. 531907008 Honeywell multifunctional gas control valve ½VR4601C modi fied to VR4601 DB for LPG for DR35L CE - 50L CE automatic.
- Page 28 All other data is as shown for natural gas models in the installers guide. Gas rates shown above are based on calorific values as follows:- PROPANE 95.75 MJ /m (2,520 Btu/ft BUTANE 121.5 MJ /m (3,200 Btu/ft Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
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- Page 30 Figure 1. authorities to seek information on water pressures available in the United Kingdom. They advised that 2 to 4 bar would be available to Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
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- Page 32 531905002 531905185 531905185 Reducing bush to suit relief valve Size 2” - 1” BSP 2” -1¼” BSP 2” - 1½” BSP 2” - 1½” BSP HEL Part No. 741627480 741627381 741627464 741627464 Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
- Page 33 DR90L (see Fig 1), and a VR4601 compact follows:- valve on the DR35L and DR50L - These valves incorporate slow opening to produce a low e) Gas supply is connected but turned off, gas cock flame start.
- Page 34 Check continuity across control thermostat with con- pliance regulator as necessary by:- trol at operating temperature position. DR35L-DR50L (Honeywell valve VR4601A). Check for high temperature limit thermostat lockout. Remove the aluminium plug (see Fig 4) and, using a screw driver turn the adjusting screw to 2.
- Page 35 Ignition Transformer 533901062 ADDITIONAL RECOMMENDED SPARES Electrode (ignition) 533805008 Probe (Flame Sensing) 533805007 Description Part Number Ceramic Cap (Probe) 533901060 Control Valve ¾” Dungs 533903013 Rubber Cap (Electrode) 533901255 Compact Gas Control Valve Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
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- Page 40 NOTES: Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
- Page 41 NOTES: Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
- Page 42 NOTES: Page HAMWORTHY HEATING LTD DORCHESTER PERM PILOT 500001001/G...
- Page 43 Notes...
- Page 44 Connect direct Direct Dial Telephone and Fax Numbers Poole Office Hamworthy Heating Limited Fleets Corner, Poole, Dorset BH17 0HH England Main switchboard tel: 01202 662500 • boilers • controllers Technical enquiries 01202 662527/662528 01202 665111 • water heaters Spare parts 01202 662525 01202 665111 •...