Submittal Sheet

Page 8
A. ADJUSTING THERMOSTAT ANTICIPATOR:
If connecting the Power Venter system to a gas appliance with a thermostat anticipator, refer
to the following to make adjustments. Disconnect one side of the thermostat circuit at the
gas valve or burner control, and connect an ampere meter into the circuit. With the system
running, take an amperage reading on the circuit. Check the nameplate or instructions for
the thermostat to obtain the proper amperage level. Adjust amperage level by moving the
anticipator lever. Reconnect the thermostat to the gas valve and start the system operating.
Time the burn cycles and adjust as follows; To make the cycle time longer, increase the
amount on the anticipator (Example: .45 to .5 Amps); to decrease cycle time, reduce the
amount on the anticipator (Example: .45 to .3 Amps) (See Figure 1.)
VIII. AIR FLOW ADJUSTMENTS:
To adjust the power venter air flow, open the choke plate 1/2 to
3/4 of the way open (See Figure 2.) Follow appliance
manufacturer's procedures for starting the heating appliance.
Then adjust the thermostat to call for "Heat". After the system
has operated for several minutes to stabilize flue gas
temperatures, check for negative draft or up-draft at the heating
appliance outlet or air flow into the draft hood. Use a draft
gauge, velocity meter, or match test procedure. Adjust the inlet
choke damper on the power venter in or out to obtain the
minimum air flow required to maintain draft. Then increase air
flow slightly (10% over minimum air flow rate) to ensure proper
venting. For oil-fired or gas-fired power burners, adjust draft to
proper over-fired draft. If using a barometric draft control, use
the draft control to fine tune the system draft. If proper draft has
been established, secure the choke plate by tightening the
screws on the inlet collar. For gas-fired systems, shut off
thermostat and check for residual heat spilling from the draft
hood. If this occurs, a post purge system may be required. If
so, use a Field Controls PPC-5 Electronic Post Purge. Before
installing, refer to the General Installation Inspection to check for
negative pressure problems in the building. Refer to the
appropriate control kit installation instructions for pressure
switch adjustment procedure and system checkout procedures
before operating continuously.
NOTE: After proper venting has been established, it is
recommended that a combustion test on gas and oil units, a
check for CO levels on gas units, and a smoke test on oil
systems be performed to ensure maximum burner efficiency.
Oil burner air adjustments should be set at a zero to a trace
smoke at the highest or recommended CO2% setting set by
heating equipment manufacturer.
IX. GENERAL INSTALLATION INSPECTION:
Recommended procedures for safety inspection of an appliance in accordance with the National
Fuel Gas Code A.N.S.I.Z223.1. The following procedure will help evaluate the venting system. It
is intended as a guide to aid in determining that the venting system is properly installed and is in
a safe condition for continuous use. This procedure should be recognized as a generalized
procedure which cannot anticipate all situations. Accordingly, in some cases, deviation from this
Figure 1
Figure 2