Electrical Requirements; Remote Control; Sequence Of Operation; Fenwal 35-60 Dsi - Schwank 2300 Series Installation & Owner's Manual

9. ELECTRICAL REQUIREMENTS AND THERMOSTAT CONTROL
All electrical installations must meet local and the latest edition Electrical Code PART 1
CSA C22.1 in Canada and ANSI/NFPA N0 70 in the U.S.A.. Single heater requires 24
Volt, 60 Hz electrical transformer sized at 40 VA. If multiple heaters are connected to a
single transformer, the proper transformer is 24 Volt, 60 Hz, sized at 40 VA for the first
heater, and 30 VA each for all subsequent additional heaters. For example, four heat-
ers wired together (parallel), require a transformer of 150 VA. It is recommended to in-
stall at most 2 heaters per zone for best comfort control and economy of operation.
PROPER WIRING POLARITY MUST BE MAINTAINED, particularly when grouping the
heaters in a zone.
Total wiring distances of up to 200' must use minimum 16 gauge electrical wire, and
wiring distances of over 200' must use minimum 14 gauge electrical wire. The heater
must be electrically grounded in accordance with the local
electrical code. Malfunction of the heating system will result if the voltage varies by
more than +10% or -10%.
The heater can be controlled by a line moisture proof thermostat "off-on" switch, or Re-
mote Control. Total load of all heaters must be considered in determining the required
contact rating of the controlling thermostat or switch.

9.1. REMOTE CONTROL

Patio Heaters can be operated with Remote Control Option; JP-1234-RK and handset
JP-1234-HS. Refer to the manual accompanying the remote control for installation.
10. SEQUENCE OF OPERATION FOR FENWAL 35-60 DSI CONTROL
Start up - Heat Mode:
On a 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 and spark are ener-
gized commencing the trial for ignition period. When flame is detected during the trial
for ignition, spark is shutoff immediately and the gas valve remains energized. The
thermostat and main burner flame are constantly monitored to assure the system con-
tinues to operate properly. When the thermostat is satisfied and the demand for heat
ends, the gas valve is de-energized.
Flame Failure - Multi Trial Model:
Should the main burner fail to light, 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 inter-
purge delay before another ignition attempt. The control will attempt two additional ig-
nition trials before going into lockout and the valve relay is de-energized.
Recovery from lockout requires a manual reset by either resetting the thermostat or
removing 24 volts for a period of 5 seconds. If the thermostat is still calling for heat af-
ter one hour the control will automatically reset and attempt to ignite the burner again.
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2300 / IO 210 Manual
IM091231
RD: DEC 2009
R.L. 11B
BA