Harman VF3000 manual Verti-Flow Stoker Control, How to operate the Stoker Control

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Verti-Flow™ Stoker Control

The Verti-Flow™ Stoker Control

The top receptacle (0.5 A) provides power to the coal feeder motor. Thus, the plug from the coal feeder motor should be inserted into this receptacle.

The center receptacle (0.75 A) provides power for the combustion blower motor. Thus, the plug from the com- bustion blower should be inserted into this receptacle. The bottom receptacle (1.25 A) is not used.

The thermostat connections on the back panel of the stoker control are .25 inch male quick connect terminals. The mating connectors (supplied) should be .25 inch female quick connector terminals. The wire should be no smaller than 22 gauge.

The thermostat connections should be connected to the aquastat as shown on the wiring diagram.

The AC power cord should be the last connection made. The power cord should be plugged into a 115 VAC / 60 hertz wall outlet, which has proper grounding available. This 115 AC volt wall outlet should also be capable of handling 3 amps of current because this is the maximum amperage this unit will draw.

How to operate the Stoker Control

There are four operator interfaces on the Stoker Con- trol. The operator interfaces are: one (1) rocker switch and three (3) 16-position rotary switches.

The rocker switch is a power switch that controls only the coal feeder motor. For normal operation this switch should be placed in the “on” position. This switch’s operation can be verified by a small red light above the coal feeder receptacle being on when the switch is on. The off position is used for lighting the fire.

The other three switches are the customer’s adjust- ments for the timers (on timer, off time, distribution blower time). These switches can adjust each timer individually from 1 minute to 15 minutes in 1 minute increments. Do not set pilot mode timers to 0.

The “on” time and the “off’ time should be pro- grammed to a minimum time that keeps the coal burning during the maintenance cycling mode. The distribution blower time should be set to 0. This is be- cause the VF 3000 doesn’t have a distribution blower. The Verti-Flow™ Stoker Control is also used on the Magnum Stoker which does use this timer.

Recommended timer settings to start are: “on” 4 minutes, “off” 12 minutes, extend timer 0 minutes. You may find that these settings produce too much heat in pilot mode. If so, you can reduce the “on” time and increase the “off” time. However, we do not recommend going below 4 minutes with the on time for efficiency reasons.

Do not connect this unit to a chimney flue servicing another appliance.

DANGER- Risk of Fire or Explosion; DO NOT burn garbage, gasoline, drain oil or other flammable liquids.

CAUTION- Hot While in Operation;

-Keep Children Away

-Do Not Touch

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Contents VF3000 Coal Stoker Boiler Page Contents Introduction Specifications/Hot Water Coil Hot Water CoilWarnings Never sleep in the same room with any coal burning stovePacking List Assembly Assembly FeederGrate 10Assembly Grates and FirebrickVenting11 Draft12Venting ChimneyVenting13 Do not connect to any air distribution duct or system14Installation Aquastat and WiringInstallation Basic Plumbing16Installation Clearances InstallationVerti-Flow Stoker Control Verti-FlowStoker ControlHow to operate the Stoker Control Verti-Flow Stoker ControlFeed Adjustment Operation19Starting a fire Weekly 20MaintenanceAsh Removal Every 3 monthsMaintenance21 Annually22Troubleshooting Feeding ProblemsStoker Control Troubleshooting Aquastat Installation A350My350, s35024AQUASTAT Feeder Parts List Wiring Diagram & Fuel CoalVF3000 At har Warranty29 Harman Central Heating Products Limited Warranty30Notes