COMBUSTION AIR IN-FORCER™
MODELS PAI-1O & PAI-2O (for 115 VAC controls)
PAI-1G & PAI-2G (for 24 VAC controls)
Interlock with residential/light
commercial gas or oil heating
equipment to provide a reliable
source of fresh, outside air for
more efficient combustion and
reduction of negative pressure-
induced backdrafting. Fan
Proving Switch safety interlock
and indicator light assure ade-
quate combustion air before burner ignition. Split
wheel blends room air with outside air for comfortable,
tempered discharge. 3" PVC is used for inlet pipe runs
and standard 6" flex or metal duct can be used on dis-
charge side. Models feature: factory prewired controls,
Built-in damper, easy installation, quiet operation and
affordability. Inputs from 40,000 to 290,000 BTU/hr.
FRESH AIR IN-FORCER™
MODELS PAI-1T & PAI-2T
The PAI-T Series provide a reli-
able source of fresh, outside
air for indoor ventilation.
Outside air to dilute trapped
pollutants and replace air
vented by exhaust fans and
fuel burning equipment can
be provided during periods
when leaving doors or windows open is not practical.
Exhaust fan can also be wired in parallel with
Timer/Clock for a true air exchange. Split wheel blends
room air with outside air for comfortable, tempered
discharge. 3" PVC intake pipe is used for inlet pipe runs
and standard 6" flex or metal duct can be used on
discharge side. Models feature: Timer/Clock for easy
programming, built-in damper, easy installation, quiet
operation and affordability.
CONSTANT PRESSURE CONTROLLER
MODEL CPC-3
The CPC-3 simultaneously monitors
and controls draft and/or combus-
tion air pressures. It modulates the
speed of an Auto-Draft inducer
and/or Universal blower to maintain
a user programmed set point. It also
can control a motorized damper/
louver, its end-switch, or react to the
contacts of a CO detector and disable interlocked
heaters. It features a built in alarm and alarm contacts.
Beyond boilers and water heaters, CPC-3 controlled
systems are commonly used to vent banks of commer-
cial clothes dryers and also multi-story exhaust chases.
The CPC-3 includes four heater interlock terminal
strips. By adding EXP-4E expansion modules up to 16
individual heaters can be interlocked.
AUTO-DRAFT®INDUCED DRAFT SYSTEMS
MODELS FSAD8-115, FSAD10-115, FSAD12-230
VSAD8-230 or 460, VSAD10-230 or 460,
VSAD12-230 or 460
Exterior mount Variable or Fixed Speed
Auto-Draft Inducers reduce vent diame-
ters up to 50%, overcome convoluted
vent layouts & dramatically shorten stack
height above roof line. Suitable for side
wall venting for increased flexibility and
savings. CPC-3 constant pressure
controller automatically regulates fan
speed based on a user set manifold/vent
pressure, resulting in perfect draft & true
energy savings. Safer than a traditional
chimney because of redundant safety
interlocks. Expansion boards enable up to
16 appliances to be interlocked. Combine
with our commercial IN-FORCER or
variable speed VSUB-Series combustion air intake
systems for balanced exhaust and combustion air.
COMBUSTION AIR OR DRAFT UNIVERSAL BLOWERS
MODELS VSUB8, VSUB12, VSUB16, VSUB20
VSUB8C, VSUB12C, VSUB16C, VSUB20C
VSUB-Series Universal Blowers
can mechanically vent gas and oil
fired heaters up to 5750 F., clothes
dryers or be used as a variable
speed Combustion Air Intake
System. Common vent atmos-
pheric, forced draft and fan assist-
ed heaters and reduce vent diam-
eters by up to 50% for significant
cost savings. Use in conjunction
with a CPC-3 controller to auto-
matically regulate mechanical
room pressure to maintain
perfect levels of combustion air.
Eliminate large uncontrolled
combustion air louvers and the potential for freezing
pipes. High pressure performance allows air to be
ducted hundreds of feet from the source. Stainless steel
construction suitable for outdoor or indoor installation.
Four models from 1,000 to 6,000 CFM.
UNIVERSAL CONTROL
MODEL UC1
The standard interlock control for
Tjernlund's full line of fixed speed
Power Venters, Draft Inducers and
Combustion Air In-Forcers. Can be
interlocked with virtually any burner
control circuit. Features include:
adjustable pre & post purge, LED
status/diagnostic indicators, 10 second
prover switch delay to avoid burner
start up and wind induced short
cycling. Interlocks with any 24/115 VAC
burner control circuit and also includes
"dry" contact actuation option.
Selectable voltage eliminates false activation by burner
control check circuits.
