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Phason 

 

VTC-1D user manual 

11140010  

11 

 

 Maintaining the VTC-1D 

Proper care and maintenance will help your VTC-1D last longer. To prevent damage to the control, perform 
the following steps after the first two weeks of operation, and once a year after that. 

1.

 

Switch off the power to the control. 

2.

 

Remove the cover and check inside for moisture. If there is any moisture, wipe it away using a dry cloth.  

3.

 

Check all cable entry points to make sure they are properly sealed. If they are not properly sealed, apply 
silicone sealant around the entry points. 

 

If you need to seal the enclosure, use a sealant that is labelled as ‘non-corrosive’, 
‘electronics grade’, or ‘neutral cure’, such as GE Silicone RTV6780B, RTV 142, or 
RTV 162. 

Do not

 use a sealant that is labelled as ‘acetic acid cure’ or ‘acetoxy cure’. These 

sealants release acetic acid while curing, which can damage the control and will 
void the warranty. 

 

4.

 

Check all wires to make sure they are properly connected and that they are in good condition. 

5.

 

Fasten the cover to the enclosure and then switch on the power to the control. 

 

Cleaning the VTC-1D 

To clean the VTC-1D, wipe the surface with a damp cloth. 

 

Be careful when washing the room using a high-pressure washer. DO NOT spray 
the control using a high-pressure washer, this can damage the control and will void 

the warranty. 
Evidence of moisture damage inside the control will void the warranty. 

 

 

Summary of Contents for VTC-1D

Page 1: ...idle mode Adjustable temperature set point Adjustable temperature differential Three second full power turn on to minimize fan ice up Two digit LED display Fahrenheit and Celsius display Error code di...

Page 2: ...the enclosure Use watertight strain reliefs or conduit connectors at all cable entry points Before removing electrical knockouts remove the cover to prevent damaging the control Do not make additiona...

Page 3: ...idelines and the guidelines below when extending cables Use two wire 18 AWG jacketed cable Phason recommends Belden 9408 Alpha 5052 or an equivalent Extension cable is also available from Phason For m...

Page 4: ...ower system is 60Hz 4 The display flashes between the temperature display and PF The pf indicates a power interruption has occurred To clear the PF click the switch to the right The control is now in...

Page 5: ...99 N A External knob Temperature differential di 1 to 20 F 0 6 to 12 C 6 F Internal trimmer Off set back oS 0 to 16 F 0 to 9 C 5 F Internal trimmer F or C ambient temp F C 22 to 99 F 30 to 38 C F Int...

Page 6: ...b to the desired setting while holding the switch to the right The temperature set point can be between 32 and 98 F 0 and 38 C 3 Release the switch You must hold the switch to the right while turning...

Page 7: ...factor calculate the correction as follows 1 Set the idle speed properly For more information see Setting minimum ventilation in idle mode on page 8 2 Set the differential to 10 F with the internal tr...

Page 8: ...g the voltage If you are unsure see your fan dealer for the minimum idle voltage for your fan motor 8 Press and hold the switch to the right 9 Turn the Temperature knob to the desired temperature set...

Page 9: ...ture set point When the temperature is between 80 F and 86 F the differential temperature fan speed changes proportionally with the temperature If the temperature increases fan speed increases If the...

Page 10: ...mperature fan speed changes proportionally with the temperature If the temperature increases fan speed increases If the temperature decreases fan speed decreases When the temperature is at or above 86...

Page 11: ...t that is labelled as non corrosive electronics grade or neutral cure such as GE Silicone RTV6780B RTV 142 or RTV 162 Do not use a sealant that is labelled as acetic acid cure or acetoxy cure These se...

Page 12: ...rovide proof of purchase upon request All transportation charges for products submitted for warranty must be paid by the purchaser Except to the extent prohibited by applicable law no other warranties...

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