INSTALLATION
CAUTION: Hazard of Electric Shock. The vaporizer must be grounded using the grounding means pro- vided in the heater terminal box and in the control box, and employ wiring in accordance with the National Electrical Code.
1.The vaporizer is normally supplied one of three different ways:
A.Without controls as they are going to be provided by the customer. The customer will have to wire from his supplied controls to the level or float switch on the vessel, and to the heater terminal blocks and the ground lug in the heater ter- minal enclosure.
B.With controls supplied, but mounted remotely by the user. The customer will have to wire from remote controls to the level or float switch on the vessel, and to the heater terminal
blocks and the ground lug in the heater terminal enclosure. C. With all controls mounted on the same skid with the hydraulic or mechanical part of the vaporizer. The unit is completely wired. The only wiring necessary is to terminals L1, L2 and L3 on the main circuit breaker and the ground-
ing lug in the control panel.
2.Note: All electrical connections should be checked and tight- ened if necessary. These sometimes loosen in transit.
CAUTION: Hazard of Electric Shock. Disconnect all power before servicing the vaporizer.
WIRING DIAGRAMS
Typical Wiring Diagram
15 to 100 kW (All Voltages)
Circuit
Breaker
| L1 |
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| F1 | C1 |
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| L2 |
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| F2 |
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| L3 |
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| F3 |
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| F4 | C2 |
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| F5 |
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| F6 |
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| F7 | F8 |
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| H4 H2 H3 H1 | H4 H2 H3 H1 | |
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| H4 | H2 | H3 | H1 | 240V | 480V | |
F9 |
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| Transformer Primary | |
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Off | On | FS2 | X1 | X2 | R | Pilot Light | ||
| 4 |
| Feed or Condensate | |||||
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| M | ||||||
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| 3 |
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| Return Pump (Optional) | ||
OPC |
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| G | |||
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| Pilot Light | ||||
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| CR | ||||
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| 5 |
| 6 |
| High Limit Circuit | ||
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| A | ||||
Off | On |
| 1CR | Pilot Light | ||||
| C1 | |||||||
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| 7 |
| 8 1CR | 9 | Heat #1 |
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Off | On |
| A |
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| Pilot Light | |||||||
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| 10 |
| 11 | 12 | C2 | Heat #2 |
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Typical Wiring Diagram
125 to 300 kW 440/480 and 550/575V
Circuit
Breaker
C1 | F1 | L1 | L2 L3 | F7 | C3 |
| F2 |
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| F8 |
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| F3 |
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| F9 |
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C2 | F4 |
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| F10 | C4 |
| F5 |
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| F11 |
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| F6 |
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| F12 |
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| F13 |
| F14 |
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| H4 | H2 |
| H3 | H1 | H4 H2 H3 H1 | H4 H2 H3 H1 | ||
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| 240V |
| 480V | |||||
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| F15 |
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| Transformer Primary | |||
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Off |
| On | 3 |
| X1 | 4 | X2 |
| R | Pilot LIght | |||
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| Feed or Condensate | ||||||||
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| M | ||||||||
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| FS2 6 |
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| Return Pump (Optional) | ||||
| OPC | 5 |
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| G | ||||||
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| Pilot Light | ||||||||
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| FS1 |
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| 1CR | Low Level and | ||
1CR | 7 |
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| High Limit Circuit | ||||
| X1 | X2 |
| Off | On |
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| 8 |
| A | Pilot Light | |||||||
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| 9 | |||||||
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| Stepper | 1 |
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| C1 | Heat #1 | ||||||
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| Off | On 11 | |||||||||
A+ | 10 | A | Pilot LIght | ||||||||||
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| 2 | ||||||||||
Input | B- |
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| Off | On 13 | C2 | Heat #2 | ||||
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| 12 | A | Pilot LIght | |||||||
| C |
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| 3 | ||||||||
135 ohm |
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| Off | On 15 | C3 | Heat #3 | |||||
D |
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| 14 | A | Pilot LIght | ||||||
Input |
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| 4 | |||||||||
E |
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| C4 | Heat #4 | ||||
OPERATION
CAUTION: To avoid possible damage to the heaters, do not ener- gize the heaters until the vaporizer is filled with fluid.
1.The filling of the Chromalox CHTV type horizontal vaporizer is accomplished in one of two ways:
A.On vaporizers with gravity return type condensate return systems, the filling is done simply by pouring the heat transfer or other organic media into the vaporizer shell using the spare or fill nozzle and, while the filling is taking place, bleeding the displaced air from the vent.
B.On vaporizers that use pump condensate return systems or on systems where the condensate is not returned, the filling would be done by first filling the condensate return tank or supply or reservoir tank and then energizing the condensate return or supply pump. While the vaporizer vessel is being filled, the vent nozzle should be opening for bleeding out the air.
2.Set the thermostat at 220°F and/or the controlling pressure switch at its equivalent.
3.To energize the heaters, turn the
float switch located on the vessel, so that the heating element will shut off automatically in case of a low liquid level.
4.Operate the vaporizer until 220°F is reached. Periodically open the bleed valves to remove air from the system. At 220°F any moisture that has been trapped in the system will flash into steam and can be bled off through the bleeder valves.
WARNING: Avoid having the heat transfer fluid or the fluid to be vaporized spilled or leaked into the pipeline or vessel insulation as it has been found that spontaneous ignition of some of these fluids may result at elevated temperatures.
5.After the vaporizer has been completely charged and free of steam pockets, set the controlling pressure switch or thermostat to the pressure or temperature point where the fluid will vaporize.
6.Operate the vaporizer until this set point is reached. Periodically open the bleeder valves to remove air from the system.
7.After the system is completely free of air, set the controlling pressure switch or thermostat to the desired operating point.
