Raypak HI DALTA HD101 - Manual (Page 32)

Modulating Temperature
Control (Optional)
This heater can be equipped with a Raypak modulat-
ing temperature control. For operation with this control,
refer to the Temp-Tracker Installation and Operating
Instructions, Raypak Catalog number 5000.66 (P/N
241177).
High Limit (Manual Reset)
The heater is equipped with a manual reset high limit
temperature device. If the optional adjustable limit is
used, push the reset button and adjust the setting to
30°F or 40°F above desired operating temperature.
High Limit — Auto Reset
(Optional)
This heater may be equipped with an optional adjust-
able auto reset high limit temperature device.
32
CONTROLS
Ignition Control Module
The interrupted proved ignition device conserves ener-
gy. When additional heat is needed, the combustion air
blower starts to purge all air from the combustion
chamber for about 15 seconds. On proof of air flow,
the air proving switch closes and the igniter is ener-
gized, eliminating the fuel costs of maintaining a
constant pilot.
To ensure safe operation, the gas valve cannot open
until the igniter is verified as capable of igniting the
gas. The ignition module is an electronic device which
closes the main gas valve within 8/10 of a second
whenever the flame is interrupted. The main burner is
automatically lit when the device is powered and pre-
purged. The unit performs its own safety check.
WARNING: Installation, adjustment and service of
heater controls including timing of various operating
functions must be performed by a qualified installer,
service agency or the gas supplier. Failure to do so
may result in control damage, heater malfunction,
property damage, personal injury, or death.
WARNING: Turn off the power to the heater before
installation, adjustment or service of the heater
controls. Failure to do so may result in heater
malfunction, property damage, personal injury, or
death.
CAUTION: This appliance has provisions to be
connected to more than one (1) supply source. To
reduce the risk of electric shock, disconnect all such
connections before servicing.
CAUTION: Risk of electric shock. More than one
(1) disconnect switch may be required to de-
energize the equipment before servicing.
Fig. 23: Ignition Module
Fig. 25: Manual Reset High Limit
Fig. 24: Modulating Temperature Control