Control Operating Sequence - Modine HDS Manuel D'installation Et D'entretien

CONTROL OPERATING SEQUENCE

3. In so far as practical, close all building doors and windows
and all doors between the space in which the appliance(s)
connected to the venting system are located and other
spaces of the building. Turn on clothes dryers and any
exhaust fans such as range hoods and bathroom exhausts,
so they shall operate at maximum speed. Do not operate a
summer exhaust fan. Close fireplace dampers.
4. Follow the lighting instructions. Place the appliance being
inspected in operation. Adjust thermostat so that the
appliance will operate continuously.
5. After it has been determined that each appliance connected
to a venting system properly vents when tested as outlined
above, return doors, windows, exhaust fans, fireplace
dampers and any other gas-burning appliance to their
previous conditions of use.
Figure 11.1
Major Gas, Electrical Service,
Safety and Other Components
➀
For series 103, the time delay relay is located on the terminal board.
1. Wiring Diagram
2. Power Exhauster
3. LED Dignostic Codes
4. Pressure Switch
5. Terminal Board
For Hot Surface Ignition
Upon a call for heat from the thermostat, power is supplied to
the power exhauster motor. The unit will go through a purge
period and then the hot surface igniter will be energized. After
the igniter has warmed up, the main valve in the combination
control valve will open to allow gas to flow to the burners. If the
14
15
6. Control Transformer
7. Serial Plate (hidden)
8. Flame Sensor (hidden)
9. Flame Rollout Switch
10. Limit Control (hidden)
6. If improper venting is observed during any of the above
tests, the venting system must be corrected.
TO TURN OFF GAS TO APPLIANCE
1. Set thermostat to lowest setting.
2 Turn manual shut-off valve located outside of the unit to the
closed position.
3. Turn off all electric power to the appliance if service is to be
performed.
4. Remove access panel.
5. Turn the gas valve switch to the "OFF" position.
6. Replace the access panel.
13
12
11
11. Hot Surface Igniter (hidden)
12. Gas Orifi ces
13. Mounting Brackets
14. Combination Gas Control
15. Common Replacement Parts (hidden)
fan motor has not already started it will start shortly. If a flame
is not sensed for any reason the main valve will close and there
will be a short purge period before ignition is tried again. If the
flame is not sensed after four tries there will be at least a one
hour wait before ignition is tried again.
11