Tjernlund HST_HS115_HSUL-JC, 1C, 2C Canadian Series (Discontinued) 8504017 Rev 1 09/97 - Manual (Page 4)

GENERAL INFORMATION
Each Power Venter is electrically factory line tested before shipment.
After opening carton, inspect thoroughly for hidden damage. Wheel should rotate freely. If any damage is found notify freight carrier
and your distributor immediately and file a concealed damage claim.
IMPORTANT
• The HSUL, HS115 and HST Series Power Venters may be used for gas fired appliances
• The HST Series Power Venters are the only HS units designed for oil and include integral post-purge Relay/Timer.
SAFETY INSPECTION OF A PREVIOUSLY USED GAS APPLIANCE
(Perform prior to Power Venter installation)
The following procedure is intended as a guide to aid in determining that an appliance is properly installed and is in safe condition for
continuing use.
The following procedure is based on central furnace and boiler installations and it should be recognized that generalized procedures
cannot anticipate all situations. Accordingly, in some cases deviation from this procedure may be necessary to determine safe opera-
tion of the equipment.
a. Perform this procedure prior to any attempt at modifications of the appliance or installation of the Power Venter.
b. If it is determined there is a condition which could result in unsafe operation, shut off the appliance and advise the owner of the
unsafe condition.
Follow the steps below in making the safety inspection:
1. Conduct a gas leakage test of the appliance piping and control system downstream of the shutoff valve in the supply line to the
appliance.
2. Visually inspect the venting system and determine there is no blockage or restriction, leakage, corrosion and other deficiencies
which could cause an unsafe condition.
3. Shut off all gas to the appliance(s).
4. Inspect burners and crossovers for blockage and corrosion.
5. Applicable only to furnaces: Inspect heat exchanger for cracks, openings or excessive corrosion. Check both the limit control
and fan control for proper operation.
4. Applicable only to boilers: Inspect for evidence of water or combustion product leaks. Determine that the water pumps are in
operating condition. Test low water cutoffs, automatic feed controls, pressure and temperature limit controls and relief valves in
accordance with the manufacturer's recommendations to determine that they are in operating order.
SAFETY INSPECTION OF A PREVIOUSLY USED OIL APPLIANCE
(Perform prior to Power Venter installation)
The following procedure is intended as a guide to aid in determining that an appliance is properly installed and is in safe condition for
continuing use.
This procedure is based on central furnace and boiler installations and it should be recognized that generalized procedures
cannot anticipate all situations. Accordingly, in some cases deviation from this procedure may be necessary to determine safe opera-
tion of the equipment.
a. This procedure should be performed prior to any attempt at modifications of the appliance or installation of the Power Venter.
b. If it is determined there is a condition which could result in unsafe operation, the appliance should be shut off and the owner
advised of the unsafe condition.
The following steps should be followed in making the safety inspection:
1. Visually inspect the venting system and determine there is no blockage or restriction, leakage, corrosion or other deficiencies
which could cause an unsafe condition.
2. Inspect burner and primary control for proper operation.
3. Applicable only to furnaces: Inspect heat exchanger for cracks, openings or excessive corrosion. Check both the limit control
and fan control for proper operation.
4. Applicable only to boilers: Inspect for evidence of water or combustion product leaks. Determine that the water pumps are in
operating condition. Test low water cutoffs, automatic feed controls, pressure and temperature limit controls and relief valves in
accordance with the manufacturer's recommendations to determine that they are in operating order.
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