Specifications

d. Ceramic tiles will have machined perimeter edges so that the burner panel assembly
requires no gasket material between contiguous tiles.
e. The perimeter of the ceramic tile burner panel will be seated to the heater body utilizing
an innocuous ceramic gasket material.
f. The ceramic tile burner will attain an operating surface temperature of 1740°F (950°C).
The ceramic tiles will be able to withstand temperatures of 1832°F (1000°C).The ceramic
tiles will have an inner porosity of 66% or more to ensure sufficient thermal insulation
between radiant burner surface and mixing chamber.
g. The gas/air fuel will be introduced to the burner mixing chamber through a single venturi
located at one end of the mixing chamber.
D. Controls and Safeties:
1. General:
a. Each individual burner panel will have solid state direct spark ignition and flame sensor
control that is dedicated to maintain and secure the operation of that burner panel
b. Heater gas and ignition controls will be readily accessible for servicing.
2. Ignition and Flame Control:
a. Heater will be complete with a low voltage (25Vac), solid state direct spark to pilot ignition
and ionization flame sensing control module. Electrical Rating: 25Vac, 60Hz with current
rating of 0.2A at 25Vac
b. Heater will be complete with an igniter/sensor with separate electrodes for spark ignition
of pilot and flame sensing of burner.
c. On call for heat the Fenwal 35-60 control will reset, perform a self check routine, flash the
diagnostic LED for up to four seconds. The gas valve, pilot, and spark are energized
commencing the trial for ignition period. When flame is detected during the trial for
ignition, spark is shutoff immediately and the gas valve and pilot remain energized. The
thermostat and main burner flame are constantly monitored to assure the system
continues to operate properly. When the thermostat is satisfied and the demand for heat
ends, or the power supply is interrupted, the gas valve is de-energized.
d. Flame Failure - Multi Trial Ignition: Should the main burner fail to ignite, or the flame is not
detected during the first trial for ignition period, the gas valve is de-energized and the
control goes through an interpurge delay before another ignition attempt. The control will
attempt two additional ignition trials before going into soft lockout and the valve relay is
de-energized.
e. If the thermostat continues to call for heat after 30 minutes the control will automatically
reset and retrial the ignition sequence. Soft lockout and retrial will continue until the power
supply is interrupted.
g. To complete the direct spark to pilot ignition system the heater will incorporate a gas
control, 25Vac transformer, and:
i) For space heating application an Infrared Setback Thermostat as supplied by
the manufacturer of the heater
ii) Or for outdoor patio heating a system control panel as supplied by the
manufacturer of the heater
SP-EECQ-CX-01B