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Johnson & Starley JANUS 6/30 Installation, Commissioning & Servicing Instructions

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INSTALLATION, COMMISSIONING & SERVICING INSTRUCTIONS
1.
1.1
JANUS 6/30 is an open flued gas fired circulator designed for floor or wall mounting, which can generate up to
64.8 litres per hour (14.3 gal/h) of hot water. It is suitable for use in a gravity fed circuit serving a hot water storage
cylinder (tank) and may be used efficiently with indirect storage systems or, in soft water areas, direct systems. Indirect
systems are preferred; direct systems should be used only when recommended by the local water company.
1.2
The gas supply to the main burner is controlled by a multi-functional gas control valve. The main burner operates in
conjunction with a permanent pilot burner and a thermoelectric sensing device. Pilot ignition is by means of a Piezo unit.
1.3
JANUS 6/30 pilot burner contains an Atmospheric Sensing Device which is able to detect a reduction in the oxygen
content of the combustion air to the appliance under adverse conditions, and will cause the pilot burner to be
extinguished. The appliance must then be re-ignited in accordance with the Ignition Instructions.
2.
2.1
NATURAL GAS:
Injector:
Setting pressure:
Gas rate:
Input:
Output:
Gas connection:
Gas service cock:
2.2
WATER:
Maximum output:
Maximum water temperature: Normal factory setting
User temperature control allows settings below maximum.
Maximum working head: 20m (65ft).
Minimum circulation head: 610mm (24in) with indirect cylinder, 356mm (14in) with direct cylinder.
2.3
FLUE:
75mm (3in) as standard, with adapter plate to convert to 100mm (4in) flue.
2.4
OVERALL DIMENSIONS:
Height:
496mm (19.5in).
Width:
123mm (4.9in).
Length:
416mm (16.9in) including controls cover.
353mm (13.9in) excluding controls cover.
JANUS 6/30
CIRCULATOR WATER HEATER
G.C. No 53 416 27
WARNING: THIS APPLIANCE MUST BE EARTHED
This appliance is for use with natural gas only.
GENERAL DESCRIPTION
TECHNICAL DATA
Amal type 187/001/004. Diameter 1.7mm.
14.0 mbar (5.6 in wg).
3
0.42m
/h (14.85ft
4.4kW (15,000Btu/h).
3.32kW (11,340Btu/h).
1
1
Rc
/
(
/
in BSP).
4
4
1
1
Rc
/
(
/
in BSP) union gas cock (supplied loose).
4
4
Table 1.
HIJAN Janus 6/30 Gas configuration
Up to 64.8 litres/h (14.3 gal/h) with 44.5
3
/h).
o
o
C (80
F) rise.
o
o
60
C (140
F) see Section 10.2.2.
1
Publication No.ZZ 1057/3
June 2009

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Summary of Contents for Johnson & Starley JANUS 6/30

  • Page 1 GENERAL DESCRIPTION JANUS 6/30 is an open flued gas fired circulator designed for floor or wall mounting, which can generate up to 64.8 litres per hour (14.3 gal/h) of hot water. It is suitable for use in a gravity fed circuit serving a hot water storage cylinder (tank) and may be used efficiently with indirect storage systems or, in soft water areas, direct systems.
  • Page 2 The JANUS 6/30 must not be installed in a room containing a bath or shower, or either a bedroom or a bed-sitting room.

  • Page 3: Gas Supply

    CUPBOARD AND COMPARTMENT VENTILATION: 3.3.1 Where JANUS 6/30 are to be installed in a cupboard or compartment, permanent air vents are required in the enclosure at both high and low level for combustion, flue dilution, and cooling purposes. These air vents must communicate either with a room or internal space, or be direct to outside air.
  • Page 4 Cold water tank storage Hot water Drain Indirect storage cock cylinder Drain Circulator cock Fig. 2a. Typical JANUS 6/30 Indirect System application. Feed Tank Hot water Direct storage cylinder Drain cock Circulator Fig. 2b Typical JANUS 6/30 Direct System application.

  • Page 5: Installation

    Drill and plug the fixing points (as necessary), and secure the appliance with suitable screws (not provided). Upper front plate Circulator/Body fixing screws (both sides) Piezo unit Fig. 3a JANUS 6/30 General Arrangement Pilot burner Electrode Thermocouple Fig. 3b BURNER and CONTROLS ASSY...
  • Page 6 WALL MOUNTING: Prior to wall mounting, remove the fixing template from the packaging and decide whether the appliance is to be L.H or R.H mounted. The handing of the mounting refers to the side of the heater to be affixed to the wall, utilizing the mounting bracket provided.
  • Page 7 WATER TEMPERATURE SETTING FOR INDIRECT SYSTEMS: Note: Thermostats are factory set to a temperature of 60°C (140°F), which is suitable for DIRECT and should NOT be exceeded for this type of system. For INDIRECT systems, removal of stop screws situated on the temperature control mechanism allows the Temperature Control to be set beyond the 60°C limit.

  • Page 8: System Operation

    SYSTEM OPERATION: 5.6.1 With the appliance ignited, ensure all controls operate correctly. 5.6.2 Carry out spillage test in accordance with para 3.5.8. 5.6.3 Allow system to reach working temperature and switch appliance OFF, rapidly drain and refill the system, clearing any air locks and test for water soundness. 5.6.4 Turn OFF Gas supply cock.
  • Page 9 PILOT ASSEMBLY Note: The relationship between the pilot and thermocouple is critical and must not be disturbed. Do not attempt to dismantle the pilot assembly. If any part of the pilot assembly is considered defective, the complete assembly must be replaced.

  • Page 10: Defect Diagnosis

    DEFECT DIAGNOSIS IMPORTANT: If an electrical defect occurs after installation of the appliance; preliminary earth continuity, polarity, and resistance to earth checks should be carried out with a multimeter. On completion of any maintenance/fault-finding task that has required the breaking and remaking of electrical connections, then checks of continuity, polarity, and resistance to earth must be repeated.

  • Page 11: Short List Of Spares

    SHORT LIST OF SPARES G.C. No J&S Part No Description 242 279 S00102 Main Body Assembly 793 243 JAN6/30/062 Burner and Controls Assembly (comprising of) 244 878 S00301 Multifunctional Control Mini SIT 381 670 S00260 ‘O’ Ring Seal 384 615 BOS 00562 Burner Arm JAN3-0704000...
  • Page 12 Johnson and Starley prides itself on its ability to supply spare parts quickly and efficiently. If your service engi- neer indicates a problem in obtaining a spare par t, advise him to contact Johnson and Starley Spares Department at the address below. Telephone: 01604 762881 JOHNSON AND STARLEY Ltd., Rhosili Road,...

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