CFM Corporation PVS-1 Operation and Checking the Draft, Maintenance, Points of inspection are

Majestic® Fireplaces Power Venting System

Operation and Checking the Draft

1.Insofar as is practical, close all doors, windows and air inlets to the building. Turn on all exhaust fans (range hood, bathroom exhaust, etc.) so they will operate at maximum speed.

2.Place appliance into operation. See fireplace manual for gas start up information. Once pilot has been lit and gas valve has been set open, activate power switch, or where applicable, adjust thermostat so the appliance will operate continuously. At this point the fan will start up and once air flow has been proven the main burner will start.

3.After allowing appliance to operate for five (5) min- utes, test for spillage at the draft hood relief opening or at fireplace front opening.

Checking the Draft. Allow the vent connected gas utilization equipment to operate for several minutes. Then check to see that the combustion products are going up the chimney or gas vent properly, by passing a lighted match or taper around the edge of the relief opening of the draft hood. If the chim- ney or gas vent is drawing properly, the smoke from the match flame will be drawn into the draft hood or opening. If smoke is not drawn in, then the combustion products are escaping from the relief opening into the room. Under these conditions, the equipment must not be operated until proper adjust- ments or repairs are made to provide adequate draft through the chimney or gas vent.

4.Next, turn on all other fuel-burning appliances within the same room so they will operate at their full input. Repeat Step C above, checking the draft on each appliance.

5.The Air-Flow Adjustment on the Power Venter is fac- tory set for maximum air flow. Operating a properly sized Power Venter at maximum setting will assure that combustion gases are safely removed to the outside. If the Power Venter has excess venting capacity than what is required for this application, operating the Power Venter with the Air-Flow Adjust- ment at the maximum setting may draw more dilu- tion air than necessary.

The Air-Flow Adjustment may be set by use of a combustion analyzer, inclined manometer or draft gauge. Alternatively, the Air-Flow adjustment can be set using a smoke candle or taper, as follows:

a.With exhaust fans operating, air inlets closed and all appliances firing (as instructed above), hold lighted match or taper around the edge of the re- lief opening of the draft hood or fireplace opening.

b.Set Air-Flow Adjustment by loosening locknut and turning rod handle. CAUTION: HANDLE MAY BE HOT, use pliers to move handle. Position of rod handle on outside of Power Venter housing indicates position of Air-Flow Adjustment inside housing.

c.Using pliers, move handle towards minimum draft setting until spillage is detected at relief opening, then re-open Adjustment just enough to eliminate spillage.

d.Lock Adjustment at desired setting by tightening locknut.

e.Return doors, windows exhaust fans and fire- place dampers to their previous condition of use.

f.Turn off appliances started in Step 4 above.

Damper Closed Damper Open

FP1427

Fig. 10 Adjustable damper control.

Maintenance

The Power Venters must be inspected semi-annually.

Points of inspection are:

1.Motor - Motor must rotate freely. Oil every six months of operation with four (4) drops of SAE 20 oil.

2.Wheel - Wheel must be clean of soot, ash or any other coating which inhibits rotation or air flow. Re- move all foreign material from vent system before operation.

3.Pressure Switch - Pressure Switch must operate freely. Verify proper operation by observing Opera- tion Sequence at least every six months.

8 51810