PVI Industries PV500-2 User Manual

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PV500-2  06/10 
 
 
Section 2 
 
START-UP PROCEDURES AND OPERATION 
 
1.  Some PVI atmospheric gas-fired water heaters are 
designed to operate with a flue damper that is 
shipped with the water heater for installation in the 
field. If your water heater was shipped with a flue 
damper, it must be attached to the flue collector and 
interconnected to the ignition control module before 
proceeding with start-up. 
 
 
Flue Damper Installation 
 
a.  Set the flue damper over the flue collector opening 
and align the damper drive housing to the front of 
the heater. 
 
b.  Secure the flue damper to the flue collector at three 
locations using the fasteners provided. 
 
c.  Remove the damper drive housing cover, feed the 
damper interconnect cable through the access hole 
and attach the female connector to the four-pin 
receptacle. Secure the access hole cover, check to 
make sure the test switch is in the "NORMAL" 
position, and reattach the damper driver housing 
cover. 
 
CAUTION: BE SURE THERE IS NO FOREIGN MATTER 
IN THE DAMPER HOUSING BEFORE ATTACHING 
THE DRAFT DIVERTER. 
 
 
Draft Diverter Installation 
 
The draft diverter (provided) is designed to mount on top 
of the flue damper. Set the draft diverter on top of the flue 
damper and secure in three locations using the fasteners 
provided. 
 
 
Venting 
 
Type B galvanized vent pipe, of the same diameter as the 
draft diverter outlet, must be installed to route combustion 
products either to existing overhead breeching or to an 
appropriate outside location. 
 
 
1.  The control manufacturer's installation and service 
manual and start-up procedures for the control 
system on your water heater are shipped with the 
unit. Study the information carefully and follow the 
manufacturer's recommendations. 
 
2.  Fill the water heater tank with water. Open the relief 
valve or a nearby hot water faucet to allow air in the 
tank to escape. Be sure all connections into the tank 
are tight as leaks at tank fittings will damage the 
insulation. 
 
3.  Remove the control box cover to access the control 
thermostats and other electrical devices needed to 
operate the water heater. The thermostats are labeled 
as to their function. The temperature limiting device is 
set at 200°F. The thermostats are factory set at 
130°F. (the upper operating thermostat) and 120°F 
(the operating thermostat). Adjustment may be made 
by turning the thermostat dial to the desired 
temperature. 
 
CAUTION:  BE SURE TO REATTACH THE 
CONTROL BOX COVER TO HELP PREVENT 
UNAUTHORIZED ACCESS TO CONTROLS. 
 
CAUTION: DO NOT OVERTIGHTEN 
COMPRESSION FITTINGS ON THERMOSTAT 
BULBS AS CALIBRATION WILL BE CHANGED. 
 
CAUTION: TEMPERATURES HIGHER THAN 125°F 
INCREASE THE RISK OF SCALD INJURY! 
 
 
Gas Train Safety Inspection 
 
CAUTION:  ALL VENTED GAS CONTROLS MUST 
BE VENTED TO THE OUTSIDE USING TUBING 
SIZED IN ACCORDANCE WITH THE 
FOLLOWING TABLE: 
 
VENT LINE SIZING
Fuel Line Size, 
Nominal Pipe Size, 
Inches 
Vent Line Size,
Nominal Pipe Size, 
Inches 
Up to 1 1/2
3/4
2
1
2 1/2
1 1/4
3
1  1/4
4
2
5
2
6
2  1/2
8
3