Tutco :: DHD & DD Series

The following diagram illustrates how to solve for watts, ohms, volts, or amps using Ohm's Law. Click to enlarge.

Fill in any two values to determine the other two:

°F = (9/5) × °C + 32

°C = (°F - 32) × (5/9)

Enter a value and select units to convert between

Calculate the electrical power, flow rate or temperature requirement as follows:

SCFM = airflow in standard cubic feet per minute

ΔT = temperature rise in F° from the inlet to the exhaust

Watts = SCFM x ΔT/3

Fill in two values to determine the third.

Three Phase Unit

Line Current = Wattage / (Voltage * √3)

Product Details

Features &
Benefits
Industries &
Applications
Options
Accessories

DHD & DD Series - Features & Benefits

50 or 60 HZ design
High voltage and low voltage terminal boards to interconnect heater with remote panel
Automatic limit switch for primary over temperature protection

Grounding lugs
Manual reset limit switch for secondary over temperature protection
Left hand offset control box

DHD & DD Series - Industries & Applications

HVAC

Primary Heating
Supplemental Heating
Auxiliary Heating
Reheating
Multizone / Variable Air

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DHD & DD Series - Options

Standard supply voltages, 120 - 600
Standard control voltages, 24 - 277
Single or three phase
Staging (balanced, unless otherwise specified)
Slip in, flange mount, bottom mount
Full face coverage

Recessed control box
Right hand offset control box
80/20 (Ni/Cr) resistance wire
Stainless steel wire
Derated coils
Vapor barrier
Gasketed cover

DHD & DD Series - Accessories

Air Flow Switch

Prevents heater from being energized when the fan is not on. UL Required. Non adjustable airflow switch (shown) requires a minimum of .07”WC pressure. Adjustable airflow switch available with rating of .05” ± .02” WC to 12”WC.