Columbia CEG-C, Инструкция по установке, эксплуатации и обслуживанию

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18
NORMAL SEQUENCE OF OPERATION
On a call for heat:
1. The thermostat will actuate completing the circuit
between T and T.
2.
The damper will then open thus closing the end
switch completing the circuit, and ignition will
begin.
3.
In the event that the boiler steam pressure
exceeds the pressure control setting, the pressure
control will interrupt the circuit to the boiler
ignition system. The power will remain off until
the steam pressure drops below the pressure
control setting.
4. In the event a low water condition occurs, an
automatic low water cut-off device will interrupt
the circuit to the ignition system until the low
water condition is satis fi ed, (i.e., manually restore
the water or utilize an electric water feeding
device which will automatically restore boiler
water to its normal operating level).
Figure 10 - Roll-Out Safety Switch
TO TURN OFF GAS TO APPLIANCE
1.
Set thermostat to lowest setting.
2. Turn off all electric power to appliance if service is
to be performed.
3.
Remove access panel (if present).
4. Turn gas control knob clockwise to “off”.
NOTE : Some gas control knobs cannot be turned
from “pilot” to “off” unless knob is pushed in
slightly. Do not force. Do not force .
LIGHTING INSTRUCTIONS
5. In the event the fl ow of combustion products
through the boiler venting system becomes
blocked, a blocked vent safety switch will shut the
main burner gas off (See fi gure 13 below).
6. In the event the fl ow of combustion products
through the fl ue-ways becomes blocked a fl ame
rollout switch will shut the main burner gas off.
See fi gure 10.