Vertex™ Evaporative Condenser Rigging & Assembly Instructions
– Optional Accessory Installation
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Heater Control Panel
1.
Carefully plan the location of the control panel. Measure the factory supplied probe cord length. Do not attempt to change
the cord length.
NOTE:
The heater control panel should be within sight of the heater if a disconnect switch option is selected
2.
After selecting the installation site, mount the control panel with four 5/16" (field supplied) bolts through the mounting feet
on the enclosure.
3.
The main incoming power hub and the main power termination points are sized for wires based on the total nameplate kW
and voltage. The actual load for a particular installation may be less. Either compute the actual load on the heater control
panel (the total kW of all the heaters connected to it) or use the nameplate rating to determine the wire size required. The
field supplied branch circuit disconnect switch and the branch circuit protective devices (fusing or circuit breaker) should
be sized per NEC or local code requirements.
NOTE:
The wiring should be sized for the quantity of incoming wires in the conduit and the amperage of the branch circuit
protective device as directed by the NEC/CEC, or any other local directives.
4.
Connect the incoming power wire conduit to the incoming power hub provided on the control panel. Make sure the
connection is watertight and secure. Pull the incoming power wire into the control panel enclosure and make connections
per the control panel-wiring diagram.
NOTE:
All power wiring should have a temperature rating of 167°F (75°C) and be rated for the number of wires in the
conduit.
5.
Connect the heater power wire conduit(s) to the heater power wire hub(s) provided on the control panel. Make sure the
connection is watertight and secure. Pull the heater power wire into the control panel enclosure and make the connections
per the control panel wiring diagram. Conduit connections to multiple heaters should run until the conduit terminates at the
last heater. Jumpering from one heater to the next is not recommended.
NOTE:
If non-metallic conduit is used, provide a circuit grounding conductor that meets NEC/CEC requirements. Ground lugs
are provided in the heater control panel.
6.
If the heater has a thermal cutoff, wire the cutoff back to the terminal block in the panel per the wiring diagram. This is a
Class 1 circuit and can be in the same conduit as the power wiring. If there are two or more heaters, connect the cutoffs in
series as shown in the wiring diagram.
7.
If alternative conduit hubs are drilled, or if supplied hubs are not used, replace the plastic protective caps inside the hubs
with steel plugs.
8.
If leakage or condensation is likely to occur in the conduit runs leading to the control panel, install a drain in the bottom of
the control panel and form a conduit loop.
9.
Verify operation by following the "Stand Alone BAC Heater Control Panel" in the Vertex™ Evaporative Condenser
Operation & Maintenance Manual available on
NOTE:
Maintain a water level at least 2” over the heaters by ensuring proper operation of make-up water level control. Low
water may lead to over temperature conditions near the heater.
