Electronic Heating Controls
|The Price Silent Guard Heater Control
Module provides efficient operation of duct
heaters with a wide range of features to
cover all control, safety and troubleshooting
concerns. The on-board PCB relays provide
quiet and reliable operation to give the end
user peace of mind.
Installation and Maintenance
The design of the PSG greatly reduces
installation time and increases convenience:
the unit simply snaps in to the duct heater.
Wiring connections for every possible
configuration are labeled on the board in a
straightforward manner. This reduces wiring
clutter and space required for assembly.
Troubleshooting the unit is even easier. An
on-board status LED sequentially blinks out
a troubleshooting code which indicates the
current status of the board. (For example:
three blinks means 3 stages of heating
are active, six blinks means auto reset
has tripped, etc.) The indicator lights also
show the user which individual circuits are
The PSG has undergone rigorous testing
and earned ETL approval giving the user
comfort in the safe operation of the device.
Numerous innovative concepts were
incorporated into the design of the circuit
board ensuring not only the safety of the
building and its occupants, but also the
safety and longevity of the fan and heater
- Quiet on-board relays
- Auto resetting 24VAC fuse
- On-board air flow switch
- Status LED to aid troubleshooting
The Price Silent Guard (PSG) is an all-in-one
solution to duct heater control. The complex
internal wiring normally associated with
duct heater assemblies is eliminated and
replaced with the sleek and compact allinclusive
PSG circuit board. Installing the
board is very straightforward: thanks to the
snap-in design and fully labeled on-board
connectors, wiring is quick and efficient.
The Price Silent Guard incorporates many
features on to the board to make it the safest
and most reliable product possible:
Accepts either switched HOT or switched
COMMON input signals.
- Software averaging of input signal
prevents relay chatter and extends
- Fan interlock option prevents coil from
- FR-4 rated circuit board complies with
- PCB mounted air flow switch with
- Easy to use with One-Phase, Three-Phase
Y or Three-Phase Delta power systems.
- Each stage handles up to 277VAC.
- Indicator lights show operation of each
stage of heat and fan output.
- Programmed time delay's prevent short
cycling of fan or heater stages.