Reflect-O-Ray
®
EDS 6
Installation, Operation & Service
Combustion Research Corporation
BURNER SETUP
Each
Reflect-O-Ray
®
EDS 6
burner assembly is marked
with the input firing rate and fuel designation on the
nameplate. Refer to the following chart for correct
manifold pressure and vacuum readings.
When the system is equipped with fresh air inlet ducting,
the vacuum reading must be read as a differential across
the entire burner. Use the test ports located inside the
burner. See diagram below
NOTE: Gas pressures must be measured with a water or
red oil manometer – DO USE NOT A DIAL GAUGE. All
measurements must be made when this heater and all
other gas burning equipment connected to the gas supply
system are operating at maximum capacity. It should be
assured by test that the gas pressure at the burner inlet is
not greater than the figures given above. Maximum inlet
pressure is 10.0” W.C. (2.48 Kpa) for Natural gas and
13.5” W.C. (3.35 Kpa) for Propane Gas.
The installer must provide a 1/8" NPT (
3.2mm
) plugged
tapping, accessible for test gauge connection, immediately
upstream of the gas supply.
1. Set thermostat above room temperature.
2. Allow the system to operate for at least twenty (20)
minutes for temperature to normalize before setting
the vacuum. Connect manometer to the pressure
ports shown below. NOTE: The plugs must be
replaced after the vacuum has been set.
3. The cold vacuum reading will be approximately 0.75”
to 1.0” W.C. (0.18 to 0.25 Kpa), this will vary
depending on the burner input and radiant tube
length. The operating vacuum pressure is to be set
for 0.5” W.C (0.15 Kpa). The vacuum can be
adjusted by opening or closing the damper
downstream of the burner.
4. Lock dampers in place by installing a self-drilling and
taping screw in the handle assembly of the damper.
5. Re-install burner cover and set the thermostat to
desired room temperature.
VACUUM TEST CONNECTIONS
1
0
1
2
2
“HOT Vacuum 0.5” W.C.
Remove 1/8” NPT plug
and attach water
manometer tube
Remove 1/8” NPT plug
and attach water
manometer tube when
using outside air
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