ATMOSPHERE COPYRIGHT © 2016
Solid state variable speed control
The DIAL-A-TEMP is a long lasting, solid state motor control. It is both convinient and safe to install. Rugged construction inside and out... uses thermally protected, permanent split capacitors (PSC), universal or shaded pole motors and packaged in a handsome fire-retardant thermoplastic enclosure.
Plug-in ground design - no tools required
UL Recognized components
Fire retardant thermoplastic enclosure
Rugged construction and compact
Maximum rating of 300W / 2.5 Amps
@ 77°F (25°C)
115 Volts - 50/60 Hz
Variable speed to control wood and coal burning fireplace and stove fans
-also incadescent lamps
On-Off switch, high to low variable
No internal wiring - just plug in and enjoy
One Year Warranty
Helps reduce fan or blower noise
Saves installing time
Solid state AC motor speed control
The variable speed motor control contains an On/Off line switch and a high gain RFI noise suppression filter. Applications include range hoods, vibrators, humidifiers, fireplace blowers, fans, laminar flow hoods, heat tunnel sand stirrers.
Features & benefits
All dimensions in inches
Spring loaded backdraft dampers
4" Lint trap
Lint trap surface mounted
Painted galvanized metal lint trap for dryer boosting applications. Use when duct length between dryer and booster fan is less than 15 feet. Fits 4-inch duct. Features pull out door with view window, removable lint filter for easy cleaning and 1/2” flange for flush mount installation.
Suitable for VTX Series models
All VTX Series products come with a mounting bracket included.
Optional galvanized mounting brackets for horizontal or vertical installation. (sold separately)
Suitable for V-Series models V-12XL & V-14XL
VTX1200L & VTX1200
VTX800 & VTX1000
Air pressure sensing switch with fixed set point
Mounting position : Mount with the diaphragm in any vertical plane to obtain specified operating set point.
Set point : Fixed to operate on pressure rise at 0.05±0.02”w.c. (1.27±0.508 mm)
Switching differential (approximate) : 0.02±0.01”w.c. (0.508±0.254 mm w.c.)
Measured media : Air, or combustion byproducts that will not degrade silicone.
Maximum pressure : 1/2 psi (0.03 bar)
Operating temperature range : -40°F to 180°F (-40.0°C to 82.2°C)
Life : 100,00 cycles minimum at 1/2 psi maximum pressure each cycle and at maximum rated electrical load.
Electrical rating : 300 VA pilot duty at 155 to 277 VAC, 15 amps noninductive to 277 VAC, 60 Hz.
Contact arrangement : SPST-NO
Electrical connections : Screw-type terminals.
Sample line connector : Barbed 1/8” - 1/4” slip-on connector accepts flexible tubing.
Shipping weight : 1.2 lbs.
Approvals : ETL
Integral recycling delay timer with 10 minutes ON, 15 seconds OFF cycle, 120 volt input.
Power : 120 VAC +10%/-15%, 50/60 Hz.
Timing range : 10 minutes (600 seconds) ±10%
Output : SPST NO relay rated for 8 amps (resistive) @ 250 VAC or 1/8 hp @ 250 VAC.
Electrical connections : Terminal block with clamp-type screw connector suitable for 12-26 AWG.
Temperature range : -40°F to 140°F (-40°C to 60°C).
Neoprene damper seal minimizes leakage
Requires from 0.04 to 0.08 inches wg pressure to open
Simple installation in any position -
entire assembly inserts into duct
VTX500 & VTX600L
Middle bracket does not apply with models
VTX400, VTX400P, VTX500 & VTX600L
Current-Operated Solid-State Relays for Switching AC Circuits
AC Current Switch
All models are designed for mounting in a 2” X 4” electrical wall box
The ACS-0 and ACS-5 products are solid-state current switches with N.O. triac outputs to control high-current line-voltage AC loads. The ACS-0 and ACS-5 models have a factory set trip level of approximately 1 Amp and require no field adjustment for easy installation. Internal circuits are powered by induction from the line being monitored and all models are cULu certified.
Direct control of AC loads, such as dryer booster fans, in response to the current of a monitored AC circuit.
Self-powered and no insertion loss
True digital switching and no leakage
Small compact size
Input / Output isolation via current transformer
Solid, reliable mounting method
Maximum Core Current : 50 Amps
Operating Temperature : 0 to 40oC (32o to 104oF)
Trip Set-Point : Approximately 1 Amps
Enclosure Size (H x W x D) : 49 x 87 x 25mm (1.95” x 3.45“ x 1”)
AC Conductor Hole : 20mm (0.8“) Diameter
Switch Rating : 120 Vac @ 2.5 Amps Max.
Turn on time : <200 mS
ACS-0 turn off time : 0 minute (factory set)
ACS-5 turn off time : 5 minutes (factory set)
Operating Humidity : 0 - 95% RH non-condensing
Material : UL 94V-0 flammability rated ABS Insulation Class 600V
Mounting Holes : 2 x 5mm holes spaced 76mm on base (2 x 0.19” holes spaced 3” on base)
Switch Type : Solid-state triac
Off-state Leakage : <1 mA
Product ordering information
120 Vac Max
120 Vac Max
Dryer Booster Fan Operation
The ACS-0 and ACS-5 can operate a dryer booster fan directly. These devices sense when a clothes dryer is drawing 1 Amp of current and then closes the output switch to activate the dryer vent booster fan. When the dryer cycle is complete and the current drops below the threshold, the output switch will open again (with a 5 minute delay for the ACS-5). The device output can switch 120 Vac loads up to 2.5 Amps.