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Bristan Bliss BL3105 B - User Manual

Bristan Bliss BL3105 B
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Installation
Instructions
and User Guide
Bliss Electric Showers
Models Covered:
BL385 W, BL385 B,
BL395 W, BL395 B,
BL3105 W, BL3105 B
Please keep this booklet for future
reference.
Installer, when you have read these
instructions please ensure you leave
them with the user.

Questions and Answers

Overview

The Bristan Bliss Electric Shower is a contemporary electric shower designed for domestic use, offering a range of features for a comfortable and safe showering experience. It is available in various models including BL385 W, BL385 B, BL395 W, BL395 B, BL3105 W, and BL3105 B, indicating different power ratings and color options (White and Black). The shower unit is designed and tested in the UK to comply with relevant British Standards, I.E.E Wiring Regulations (BS7671), and Building Regulations (Part P and Part G).

Function Description

The Bristan Bliss Electric Shower heats cold mains water on demand, providing a continuous flow of hot water for showering. It features a digital display for temperature indication and touch buttons for power control and start/stop functions. The unit incorporates a Temperature Control Device (TCD) to prevent scalding by switching off heating elements if the water gets too hot, and a Pressure Relief Device (PRD) to protect against excessive pressure build-up. The shower also includes a phased shut-down feature to reduce limescale build-up by continuing water flow as the heater cools.

Important Technical Specifications

Plumbing Connections:

  • Inlet connection: 15mm Push fit
  • Outlet connection: 1/2" BSP male threaded
  • Water inlet entry points: Left hand side (Top, Bottom, Rear (bottom)), Right hand side (Bottom, Rear (bottom))
  • Operating Pressures:
    • Minimum working pressure: 0.07 MPa (0.7 bar)
    • Maximum working pressure: 1.0 MPa (10 bar)
    • Static pressure range: 0 - 1.0 MPa (0 - 10 bar)
  • Supply Requirements:
    • Minimum inlet water temperature: 5°C
    • Maximum inlet water temperature: 20°C
    • Suitable for mains cold water pressure only, with a minimum flow rate of 8 litres per minute.

Electrical Specifications:

  • Supply: 230-240V AC
  • Electrical cable entry points: Left hand side (Top, Bottom, Rear (bottom)), Right hand side (Bottom, Rear (bottom))
  • Power Ratings (at 240V / 230V):
    • 8.5kW / 7.8kW
    • 9.5kW / 8.7kW
    • 10.5kW / 9.5kW
  • Circuit Protection Device (MCB / Cartridge Fuse):
    • 8.5kW: 40A / 45A
    • 9.5kW: 40/45A / 45A
    • 10.5kW: 45A / 45A
  • Cable Current Carrying Capacity (for Twin and Earth PVC Insulated Cable):
    • 6mm²: 32A (in insulated wall), 38A (in conduit/trunking), 46A (clipped direct/buried in non-insulated wall)
    • 10mm²: 43A (in insulated wall), 52A (in conduit/trunking), 63A (clipped direct/buried in non-insulated wall)
  • Earthing: The appliance MUST be earthed. A 30mA Residual Current Device (RCD) is required.
  • Isolation: A suitable double pole isolation switch (e.g., 45 Amp with 3mm contact separation) must be incorporated in the fixed wiring circuit.

Product Fiche Data:

  • Declared Load Profile: XS
  • Water Heating Energy Efficiency Class: A
  • Water Heating Energy Efficiency (%): 38.5 - 38.6% (varies slightly by model)
  • Annual Electricity Consumption (kWh): 478 - 480 kWh (varies slightly by model)
  • Sound Power Level (dB): 15 dB

Usage Features

  • Digital Temperature Indication: A clear digital display shows the water temperature inside the unit. In Stand-By mode, it displays "__".
  • Power Touch Buttons:
    • Medium (eco I) Power: For energy-saving operation.
    • Cold (*) Power: For cold water flow.
    • High (=) Power: For maximum heating.
  • STOP/START Touch Button: Initiates and terminates the shower flow.
  • Temperature Control Knob: Allows adjustable temperature settings.
  • Warm Up Mode: The lights around the touch buttons flash as the water heats up, indicating readiness when they stop flashing and stay on.
  • Phased Shut Down: After turning off, water continues to flow briefly while the heater cools to approximately 30°C, helping to reduce limescale.
  • Showerhead with Multiple Spray Modes: The Bliss showerhead offers three spray patterns (spray, jet spray, and combination) adjustable by rotating the spray head.
  • Riser Rail with Adjustable Slider: The riser rail allows for height adjustment of the showerhead, with a button on the slider for release. It also includes a soap dish and accessory hooks.

Maintenance Features

  • Performance Maintenance Indication ("CL"): The digital display shows "CL" to advise routine service cleaning for optimal performance.
  • Rub-Clean Showerhead: The showerhead features a rub-clean pad for easy removal of limescale and debris. Regular cleaning is recommended, especially in hard water areas.
  • Cleanable Inlet Filter: The inlet filter can be periodically removed and rinsed under clean running water to prevent blockages.
  • Cleanable Outlet Hose Mesh Filter: The mesh filter in the outlet hose can be removed and rinsed under cold running water.

Important Safety and Maintenance Notes:

  • Always switch off power at the consumer unit before any electrical work or removing the cover.
  • Do not operate the shower if it is frozen, damaged, or leaking.
  • Ensure adequate ventilation in the room to prevent condensation.
  • Do not block the showerhead flow or crush/kink the hose.
  • Only fit manufacturer-recommended showerheads; "water saving" handsets that restrict flow are not permitted.
  • The shower unit must be mounted on a flat, waterproof, finished wall surface and not recessed or tiled around.
  • The spray head must be descaled regularly.
  • In the event of PRD activation (water discharge from the vent), switch off electricity and water supplies and contact Customer Services.
  • If "LOW PRESSURE" appears on the display, wait for water pressure to increase before use.

Bristan Bliss BL3105 B Specifications

General IconGeneral
BrandBristan
ModelBliss BL3105 B
CategoryBathroom Fixtures
LanguageEnglish

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