INSTALLATION
6.Heater must not be operated in sludge.
7.Install the heater using a high quality pipe sealing compound on the threads. Screw the heater into the opening (Figure 2). Tighten sufficiently with wrench applied on the hex portion of the screw- plug.
2”
Approx. 6” Cold
place.
A2. Position outlet and inlet in a vertical plane, facing upward to prevent air pockets. Be sure all trapped air is removed from the closed tank. Bleed the air out of the liquid piping system and heater housing prior to operation.
A3. IMPORTANT: Heater should never be located at the highest point in the system. Provide expansion tank, if necessary.
B.Vertical Position (Figure 4)
9.DANGER: Hazard of Fire — Since the heaters are
WARNING: Care must be taken to insure the heated portion does not extend into the coupling area (see Dimensions).
Figure 2 - Exploded View Pipe Insert Heater Mounting
8. Closed Tank Installation |
| |
NOTE: When | heating | in closed vessels, controls and |
must be | used to prevent buildup of temper- | |
Drip Loop Recommended
to Minimize Passage of
Moisture Along Wiring
Into Terminal Wiring
and Connections
Suitable
Wiring
Locate Drain Pipe
at Bottom of Heater.
Sediment Deposits may be Removed Through Drain Pipe
Outlet
Inlet
Maximum Sediment Level.
Install Heater Above
This Level But as Near to it as Possible for Maximum Heated Solution Storage Capacity
ature and/or pressure. |
A. Horizontal Position (Figure 3) |
Note: In a Forced Circulation System,
Use Pump In Inlet Side
Outlet | Inlet |
Heater
Figure 3 - Closed Tank in Horizontal Position
A1. Place heater at an elevation so that natural circulation can take
Figure 4 - Closed Tank in Vertical Position
capable of developing high temperatures, extreme care should be taken to:
A.Avoid contact between heaters and combustible materials.
B. Keep combustible materials far enough away to be free of the effects of high temperatures.
WIRING
WARNING: Hazard of Shock. Any installation involving electric heaters must be effectively grounded in accor- dance with the National Electrical Code.
1.Electric wiring to heater must be installed in accordance with the National Electrical Code and with local codes by a qualified person as defined in the NEC. WARNING: Use copper con- ductors only.
2.When element wattages are not equal, heaters must not be connected in series.
3.Electrical wiring to heater should be contained in rigid con- duit or in sealed flexible hose to keep corrosive vapors and liq- uids out of the terminal housing.
4.If flexible cord is employed, a watertight connector should be used for entry of the cord into the terminal box. Outdoor applica- tions require
5.Bring the power line wires through the opening in the terminal box. Connect line wires as shown in the wiring diagram (see Figure 5).
