UNPACKING
On unpacking, check the heater for possible shipping damage. Should any
damage be apparent, please notify your Clarke dealer immediately.
Your heater is fully assembled, It is only necessary to connect the gas supply.
FEATURES
Understanding the basic operation of the heater, will reinforce the need to maintain the
unit in top condition at all times, whilst
always
observing the safety precautions.
The heater comprises three basic systems:
1. The gas system.
2. The ignition system. 3. The safety control system.
1. Gas System
The gas supply to the machine is by means of a high pressure hose, connected
to a LPG cylinder, via a pressure regulator.
When the gas valve is opened, gas will flow to the Control Valve and finally the burner.
This heaters is designed for use with PROPANE gas ONLY. Gas bottles are not
supplied, but are readily available from builders merchants or gas suppliers etc.
This heater is designed to operate with a minimum 20 pound (9 kg) propane
tank. You may need two or more tanks or one larger tank in colder weather. Use
a 100 pound (45 kg) tank for longer operation or in very cold weather. Less gas is
vaporized at lower temperatures. Your local propane gas dealer will help you
select the proper supply system. The minimum surrounding air temperature rating
for each heater is -20
o
F (-29
o
C).
2. Ignition System
A Piezoelectric Igniter is positioned at the Pilot Light. When the Igniter button is
depressed (C, Fig.2), a high intensity spark is generated, which ignites the gas.
Heat from the flame is sensed by a Thermocouple, which is connected to the
Flame Failure Valve. As the Thermocouple heats up, a low voltage is fed to the
Safety Cut-Off Valve, causing the valve to open, so that after a short period, the
Control Valve (see ‘Lighting the Heater on p8) may be released, and the pilot
flame is established.
3. The Safety Control System.
Should the flame extinguish for any reason, the Thermocouple will quickly cool,
causing the Flame Failure Valve to close, shutting off the gas supply.
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