3
Important Installation Points
The unit must be installed to comply with national regulations and/or codes of practice. A qualified
electrician must carry this out.
Ensure at least 1000 mm clear front access to the electrical and steam sections.
Do not locate the cabinet where the ambient temperature around the unit could exceed 35º C; or
fall below 5º C e.g., an unventilated roof mounted enclosure – see minimum space / ventilation
requirements page 7.
Do not locate the cabinet where a ladder is required for service access as this could make
servicing and cylinder service or exchange hazardous.
Make sure steam line(s) have adequate slope (min 12%) for condensate drainage and use
condensate separators if the pipe is lower than the unit.
Provide adequate support to prevent sags developing in flexible steam lines, which can fill with
water and create a "trap".
Do not locate vented drain directly under the cabinet.
Important Electrical Connection Items
Before commissioning the unit, check that all electrical (power) connections - including those at
the terminals and contactor are tight.
Check that the transformer primary winding connection is correct for the supply voltage at Vapac
terminals A1 & A2.
The Vapac transformer must not be used to power other equipment.
To comply with EMC aspects see recommendations on page 10.
Use a high-limit humidistat to ensure positive interruption of unit operation when over-
humidification is detected (See page 17).
It is important that the control signal connected to terminals 5 & 6 must be referenced to ground at
the control PCB – this can be done by linking either terminal 5 or 6 to terminal 7.
NB if the controller output is referenced to ground, it is important that the “leg” which is
connected to ground at the controller is also connected to ground at the Vapac unit. Grounding
the opposite “leg” will cause damage to the controller and/or the Vapac control PCB.
Important Maintenance Items
Only a qualified electrician should carry out maintenance.
The boiler contains hot water, and must be drained before any maintenance is carried out on the
steam section. This should be done prior to isolating the power, and removing the front access
panel
ESD SENSITIVE DEVICES USED ON PCB. ENSURE ANTI-STATIC PRECAUTIONS ARE TAKEN
WHEN REMOVING OR REPLACING PCB’S.
