Valad can supply four basic control panels: (1) Remote Mechanical (2) Integral Mechanical (3) Remote Solid State (4) Integral Solid State
Note: 100 kW heater requires 130 ampere load, will use 200 ampere disconnect.
On multi-stage control boxes, 3 or greater, a solid
state staging controller should be used.
Control panel will have the following components:
Six staging contacts (primary)
Six staging contactors (secondary)
Control transformer 440/120
Transformer to be fused
Through cover disconnect
Terminal block for remote thermostats (six)
Terminal block for duct stat
Terminal block for sail switch
Terminal block for manual hi-limit thermostat/one per stage
Valad will assign a drawing number to each control box when order is placed. Prints of the control box and wiring diagram will be put on file and a copy sent to customer for future reference.
Customer to list all the components (See Example A).
N/A16 GA 302/304 stainless steel Gasketed for water tightness NEMA 4 Mounting Holes Provided
Example A
N/ACustomer has requirement for control box/6 stage 100 KW Vent Duct Heater. 440 V 3 PH with the following components: Step down transformer Fused terminal blocks for staging thermostats Disconnect switch