Introduction
This guide will acquaint you with the
operation of the Espar AIRTRONIC
air heater. The AIRTRONIC air
heater is a diesel-fired heater which
provides a dependable means of
compartment comfort without idling
your engine. The heater will cycle
through four temperature settings in
order to maintain the desired
temperature. While Espar heaters
are simple to operate, certain steps
should be followed to assure proper
operation.
AIRTRONIC
A. Start Up
1. Shut off the vehicle’s engine.
2. Espars’ AIRTRONIC can be
operated by a Mini-Controller, a
room thermostat or an optional 7
Day Timer (see timer instruc-
tions for the 7 Day timer).
Mini-Controller
Switch the heater on by pressing the
heat button. Control desired temper-
ature range by turning the dial clock-
wise to increase temperature.
Lowest setting - approx. 47°F (8.5°C)
Highest setting - approx. 97°F (36°C)
Thermostat
Turn the on-off switch to the “ON”
position. Switch the heaters’ temper-
ature setting by adjusting the
temperature control dial to the
desired temperature range.
Lowest setting - approx. 50°F (10°C)
Mid setting - approx. 68°F (20°C)
Highest setting - approx. 86°F (30°C)
3. If compartment/bunk is already
up to temperature heater will
come on and cycle to low.
There will be a 5 second delay
before the heater starts to run.
The heater is doing a “systems
check” and this is normal.
4. The blower motor starts gradual-
ly and the glow pin pre-heats the
combustion chamber (approx. 45
seconds).
5. Following the glow pin preheat,
the fuel metering pump starts
and ignition takes place.
6. Once ignition takes place the
heater’s flame sensor switch will
automatically shut the glow pin
off.
If the heater fails to ignite the
first time, it will automatically
attempt a second start. If unsuc-
cessful, the heater will shut
down completely. If the heater
fails to ignite after second
attempt, consult the
troubleshooting manual or call
your nearest authorized Espar
dealer.
Red LED comes on
On
On OEM installs
the ‘red” &
“green”
indicator lights
light up. On after
-market installs
only the “red”
light lights up.
red
green
Temperature Dial
B. Running
1. The heater starts in boost mode
when switched on by the
operator.
2. Once the temperature setting on
the mini-controller or thermostat
has been reached, the
AIRTRONIC will then cycle
between Boost-High-Medium-
Low to maintain the desired
comfort level.
3. If the temperature continues to
rise, even in the low heat mode
the heater will cycle off until the
temperature falls below the mini-
controller or thermostat setting.
The heater will restart, when
required.
4. The heater will continue to run in
this manner until it is switched
off.
The mini-controller or thermostat
must be in the off position in
order to be sure the heater is
completely off and not cycling.
Espar
Espar Products, Inc.
6435 Kestrel Road
Mississauga, Ontario
Canada L5T 1Z8
Canada (Tel): 905-670-0960
800-668-5676
Fax: 905-670-0728
U.S. (Tel): 800-387-4800
www.espar.com
inquiries@espar.com
A Member of the Eberspächer Group of Companies
AIRTRONIC D2/D4
Operators Guide for bunk heater
P/N: 615-103-0203
www.espar.com
AIRTRONIC
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