46
CL3
Series
3.0
Installation
•
Verify Manifold Pressure
Verify Manifold Pressure
Before starting up the unit, smell all around the heater for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle on the floor.
When turning the gas shut off valve, only use your hand. Never use tools to turn the knobs, as it may
damage the valve resulting in a fire or explosion. If the knob is stuck, do not try to repair it; contact a
qualified service technician or your local gas company.
To verify the proper manifold pressure, follow the following steps:
1
Remove the plastic top panel. Turn off the gas valve with the switch located on the valve body.
2
Remove the manifold pressure tap plug on the gas control valve.
3
Connect the pressure gauge tube and manometer.
4
Turn on the gas valve with the switch located on the valve body.
5
Turn on the electrical power to the heater.
6
To light the main burner, set the room thermostat to a point above room temperature.
NOTE:
This heater is equipped with an ignition device, which automatically lights the burner. This
heater cannot be lighted manually. Do not try to light the burner by hand.
Verify manifold pressure:
7
After the unit has successfully ignited, wait five minutes prior to taking any readings. The
heater
must be in a steady state of operation prior to taking a manifold pressure reading.
8
While waiting for the unit to stabilize, observe the characteristics of the flame. The flame
should be
stable and should not lift from the burner. The burner color should be light blue and should not
create excessive noise.
9
After five minutes, observe the pressure rating on the pressure gauge.
The target manifold pressure for:
• Natural gas is 3.5 inches W.C.
• Propane gas is 10.0 inches W.C.
NOTE:
Manifold pressure of the heater is pre-set at the factory. No adjustment should be
necessary.
During the verification process, a tolerance of +/- 5% of the full scale is acceptable due to varying
atmospheric conditions.
If manifold pressure is outside of this tolerance, then an adjustment may be necessary.
Removing pressure gauge from manifold port on gas valve:
10
Set thermostat or other control device to the lowest set point.
11
After heater has completed the post-purge cycle, turn off the electrical power to the heater.
15
Leak check the re-installed pressure tap plug using a soap solution or equivalent method .as
described in ANSI Z223.1 (NFPA 54).
