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Category: Technical information associated with Eaton-Williams Group Humidifier Guide Humidifier Specification

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Eaton Williams
Humidifier Guide Specification

1 Supply a Vapac VapaNet self-contained, electronically controlled, self-generating wall mounted electrode boiler type steam generator.

Nominate a) VapaNet LE- On / Off Control
b) VapaNet LE- Water Level Control
c) VapaNet LE-P Pulsed Energy Control

Each humidifier uses electrode boiler technology and is capable of producing - kg/hr of steam at atmospheric pressure.

2 The internal control circuit within the humidifier shall be 24V a.c. The internal control PCB is 9V a.c. The drain pumps are 230V a.c. powered from the internal primary transformer.

3 The steam shall be produced at atmospheric pressure in a polypropylene cylinder, the material of which shall be bio degradable and able to be recycled. The steam connection from each cylinder shall be 35mm or 55mm dependant on the nominated model.

a) The cylinder is a disposable, all-welded manufacture incorporating specially constructed electrodes housed within.

b) The cylinder is a splittable, clamped construction incorporating specially constructed electrodes housed within.

4 The humidifier includes a 240V a.c. drain pump that shall be used to drain the cylinder for anti-foam protection and normal drainage cycles. The pump is housed underneath the base drain pan of the mechanical compartment, and discharges at a maximum rate of 16.8 l/min at 50Hz power supply (17.2 l/min at 60Hz) per cylinder.

5 The humidifier is configured to accept various power supplies all of which would enable the humidifier to deliver the nominated capacity.

Voltage: 200, 230, 380, 415, 440.

Supply: Single phase plus neutral, Two phase, Three phase.

6 The Humidifier is a LON Mark control device and can communicate with any proprietary open architecture Building Management System that is compatible with LON protocols.

The humidifier can accept an externally generated control signal direct from a sensor or a BMS. The control signal shall be: Potentiometric, 0-5V, 0-10V, 0-20V, 2-10V, 1-18V, 4-20mA, Network.

The controller incorporates volt-free contacts to indicate Unit Run and Unit Alarm when connected to a suitable interface.

7 The humidifier shall have the capability to introduce safety interlocks from the air conditioning system such as Fan Interlock. Air Flow Switch, and High Limit Hygrostat via a dedicated security circuit.

8 The Humidifier has a separated electrical and mechanical section suitably sealed to prevent spillage leaking. The drain pan is constructed from 316-grade stainless steel. The body of the cabinet is constructed from galvanised mild steel finished in a polyester paint to BS00A05. The cabinet is ventilated to ensure heat generated inside is suitably dissipated from vents in the back of the top panel. The doors to the cabinet shall include two positive close locks requiring a key to open. A key is provided with each unit.

The humidifier incorporates an LED indicator panel to the front (left-hand) door, showing the user or engineer the operational state of the system. The LED’s indicate: Unit Off, Unit on line and operational, Unit on standby, Drain fault, Unit stopped. Feed fault, Unit stopped, Over current, Service interval expired, Service routine operational, Service routine completed, Constant output active.

9 To avoid earth leakage, the power supply will be disconnected from the electrodes when the system is in drain mode.

10 All Humidifiers comply to local and national water and plumbing codes, and incorporate a fill cup with a 25mm air gap on the water feed line to prevent back feed and contamination of the water supply line. The drain circuit discharges through a drain trap vented to the steam cylinder compartment.

11 The water feed to the Humidifier incorporates a strainer and flow restrictor to suit connection to water supplies with pressures in the range 1 to 8 bar.

Options

12a An Alpha-Numeric Display is incorporated into the (left hand) front door as a factory fitted item to allow password access to three levels of administration.

User level
Service engineer level
Systems engineer level

12b An Alpha-Numeric Display is incorporated into a separate box complete with a two metre lead and plug to allow remote mounting of the display. This display can be permanently mounted or used as a service tool and disconnected from the apparatus after completion of work.

13 A three metre communication cable is available for master / slave operation. The cable has factory fitted plugs to each end of ease of connection.

14 A Room Distribution Unit mounted directly onto the Humidifier cabinet is available for all single cylinder models, 05, 09, 18, 30, 45. The same Room Distribution Unit can be mounted remotely from cabinet and steam lines, and power cabling can be run between.

Dimensions & Weights

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Eaton-Williams Group
Station Road
Edenbridge
Kent
TN8 6EG

Tel : 01732 866055
Fax : 01732 869626