Field Controls 46311800, Manual

Page 8

GENERAL INSTALLATION INSPECTION 

Follow recommended procedures for safety inspection of a heating appliance in accordance with the National Fuel Gas 
Code A.N.S.I. Z223.1. The following procedure will help in evaluation of the venting system. It is intended as a guide to 
aid in determining that the appliance is properly installed and is in a safe condition for continuous use. This is a 
generalized procedure which cannot anticipate all situations. Accordingly, in some cases deviation from this procedure 
may be necessary to determine safe operation of the equipment. If it is determined that a condition which could result in 
unsafe operation exists, the appliance should be shut off and the owner advised of the unsafe conditions. Corrections 
must be made prior to allowing continuous operation. The following steps should be taken in making a safety inspection. 

1.  Visually inspect the venting system for proper size and determine that there is no blockage, restriction, leakage, 

corrosion, or other deficiencies which could cause unsafe operation. 

2.  To the extent possible, close all building doors, windows, and all doors to the room in which the heating appliance is 

located. Turn on clothes dryers and any exhaust fans so that they operate at maximum speed. Do not operate a 
summer exhaust fan. Also close all fireplace dampers. If after completing steps 3 through 7 it is believed that sufficient 
combustion air is not available, refer to the National Fuel Gas Code A.N.S.I. Z223.1 or any local codes for proper 
guidelines. 

3.  Place the appliance being inspected into operation. Follow the lighting instructions and adjust the thermostat so that 

the heating appliance will operate continuously. 

4.  Determine that the burner is operating properly and that the main burner ignition functions satisfactorily, by 

interrupting the electrical power of the appliance in any safely convenient manner. Test the burner safety device to 
determine if it is operating properly by extinguishing the pilot or disconnecting the flame safety circuit. 

5.  Visually determine that the main burner is burning properly, i.e. no floating, lifting, or flashbacks. Adjust the primary air 

shutter as required by the appliance manufacturer. If the appliance is equipped with high and low flame control or 
flame modulation, check for proper main burner operation at both flame levels. 

6.  If appliances are equipped with high and low flame control or flame modulation, check for proper main burner 

operation at low flame. 

7.  Test for exhaust gas spillage at the draft hood or the barometric draft control after approximately 5 minutes of main 

burner operation. Use a draft meter or flame or smoke from match, candle or cigarette.  If spillage occurs, adequate 
air is not available.  Shut off heating appliance thermostat and check for spillage around the draft hood, barometric 
draft control or burner inlet air location after power venter has stopped operation.  If a flow reversal is noticed, house 
depressurization is occurring and make up air is required.  For oil-fired systems, this may be noticed by oil fume smell 
after post purge cycle. 

8.  Turn on all fuel burning appliances within the same room so that they operate at their maximum capacity. Then repeat 

Steps 5 and 7. 

9.  Return all doors, windows, exhaust fans, fireplace dampers, and any other fuel burning appliances to their previous 

condition. 

MAINTENANCE 

1. 

Motor:

 Inspect the motor once a year - motor should rotate freely. To prolong the life of the PVO-600 motor, it must 

be lubricated with six drops of SWG Superlube, Part #46226200, annually.  The PVO-300 has sealed ball bearings, 
and therefore does not need to be oiled.   

2. 

Blower Wheel:

 Inspect the blower wheel annually to clear any soot, ash or coating which inhibits either rotation or air 

flow. Remove all foreign materials before operating. 

3. 

Vent System:

 Inspect all vent connections annually for looseness, for evidence of corrosion and for flue gas leakage. 

Replace, seal, or tighten pipe connections if necessary. Check the power venter choke plate to insure it is secured in 
place. Check the barometric draft control, if installed, to insure the gate swings freely. 

4. 

System Safety Devices:

 With the heating system operating disconnect the pressure sensing tube from the pressure 

switch on the venter. This should stop the burner operation. Re-connecting the tube will relight the burner.