Introduction; Physical Specifications; Description Of Functions; Combustion Chamber - Toyotomi Laser 300 Service Manual

L A S E R
Section 1
1-1

Introduction

The Laser Heating System is a completely new type of
sophisticated and fuel-efficient vented system featuring
its own housing, combustion and air circulation systems
and a micro computer control system.
In addition to superior design and technology, rigorous
testing for quality and safety have made the Laser
Heating System unmatched for efficiency, convenience,
economy and flexibility. Plus, the Laser is easy to
maintain and required minimal service.
The following section outlines the Laser Heater and its
various components
1-2

Physical Specifications

W × D × H (inches)
17-3/8" × 21-3/4" × 15-1/8"
Laser 300
(440 × 555 × 385 mm)
19-5/8" × 23-5/8" × 16-1/2"
Laser 530
(496 × 600 × 418 mm)
24-3/8" × 26-3/4" × 16"
Laser 560
(620 × 680 × 405 mm)
Laser 730/ 30" × 27-1/2" × 16-3/4"
Laser 730AT (760 × 700 × 427 mm)
1-3

Description of Functions

See Fig. 1-1.
The heating cycle begins with a purge of any existing
fuel vapors along with a pre-heat period. The fuel and air
are then delivered to the heated burner, resulting in
ignition.
After several minutes of low and medium mode
combustion, the circulation fan starts to blow air through
the heat exchanger and automatically maintains the
proper burn rate. When the room temp. increases
sufficiently, the heater shuts down and goes through a
post-purge mode for approx. 3 minutes.
The Laser Heater is equipped with a programmable
timer which allows for fully automatic operation 24 hours
a day. The heater will run at four stages "HIGH",
"MEDIUM", "LOW" and "OFF" cycle to maintain the
desired temperature setting.
H E A T I N G
The Laser Heater is composed of the following:
Flue Pipe
Weight
Hole
31 lbs.
(14kg)
38 lbs.
2-3/4
(17kg)
to 3"
diameter
(7.0 -
60 lbs.
7.5 cm)
(27kg)
75 lbs.
(34kg)
The combustion chamber consists of two main parts;
one is the heat chamber and the other is the heat
exchanger. The combustion chamber is secured to the
top of the burner. The heat chamber has a window,
allowing the serviceman to visually examine the
combustion process (i.e. glowing igniter or proper flame).
The exhaust vapors pass through the heat exchanger.
While exhaust vapors are moving through the heat
exchanger, the heat is extracted from the heat
exchanger by the air circulation fan.
The burner is positioned on the cabinet base.
The burner has a double wall construction and contains
an igniter tube, a fuel inlet fitting and a series of air holes
on the inner wall.
Connected to the burner is the igniter (located within
the burner), a fuel line and a flame sensor. Within
the burner is the burner ring. An airway on the rear
panel
S Y S T E M S
IGNITION
SHUTDOWN
Figure 1-1 SIMPLIFIED OPERATIVE CYCLE
1-4 Description
• A drip tray
• A cabinet
• A forced flue venting system
• A combustion system
• An air circulation system
• A fuel delivery system
• Electrical and electronics systems
• A variety of safety mechanisms
1-5

Combustion Chamber

1-6 Burner
Description
1
S E R V I C E M A N U A L