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CONAIR THERMOLATOR VTR POSITIVE/NEGATIVE OPERATION

1.0 PROCESS WATER CONNECTIONS

PROCESS CONNECTIONS

Connect the FROM PROCESS and TO PROCESS connections on the back of the Thermolator using 1-

1/4”

NPT piping. Viewed from the rear, the FROM PROCESS connection is located on the left hand side of the

unit, and is clearly marked “FROM PROCESS”. The TO PROCESS connection is located on the right hand

side of the unit, and is marked “TO PROCESS” in close proximity on the back panel.

OVERFLOW/VENT CONNECTION

Connect the OVERFLOW/VENT piping on the reservoir tank, located at the top rear of the unit, to an open

drain or vented, covered container. This connection must be piped with a clean break in order to prevent

back flow and pressure in the PROCESS piping. This is where a VTR vents air out of the PROCESS piping

since the unit is operating at times in a vacuum mode, and can be introducing small amounts of air into

the PROCESS piping.

Note: Always use a back-up wrench to support the piping when making connections to the unit.

1.1 COOLING/MAKE-UP WATER CONNECTIONS

COOLING CONNECTIONS

Connect the COOLING WATER IN /MAKE-UP and COOLING WATER OUT piping to the Thermolator using ¾”

NPT pipe. Viewed from the rear, the COOLING IN /MAKE-UP hookup is in the lower left hand side through

the back panel and is marked “COOLING WATER IN”. The COOLING WATER OUT hookup is in the lower

right hand side through the back panel and is marked “COOLING WATER OUT”.

Note: The cooling water out connection is piped with a swing check that must not be turned on to its

side when the connection is made.

1.2 COOLING/MAKE-UP WATER PRESSURES

COOLING /MAKE-UP SUPPLY & RETURN WATER PRESSURES

Cooling /make-up SUPPLY and RETURN water pressure must have net pressures of between 25 PSI and 75

PSI. A net pressure less than 25 PSI may not provide sufficient cooling for the process. The net pressure

is the difference between the cooling SUPPLY and RETURN pressures.

1.3 SEQUENCE OF OPERATION

SEQUENCE OF OPERATION

VTR1 units control process water temperature. When the controller signals the unit to heat, the electric

immersion heater is energized raising the PROCESS water temperature. When the controller signals the

unit to cool, the COOLING WATER OUT (1/4”) solenoid valve is energized. This allows the hot PROCESS

water out of the process piping. When sufficient water has been pumped out of the unit, the MAKE-UP

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Conair MPW Spezifikationen Seite 6