Thermo-pride MODEL OPA Manuel d'utilisateur télécharger pdf (Page 40)

All installations and services must be performed by qualified service personnel.

After 15 to 20 minutes of continuous operation, the temperature rise through

the furnace must fall within a range of 50° to 80° F. If the outlet or supply

duct temperature is too high, check to make sure the return air filter is clean,

the return air registers are free from obstruction, the outlet registers are

properly adjusted and clear, and the supply and return air ducts are open.

The circulating air blower is not moving enough air if the supply air

temperature is still too high. Before proceeding further, turn off the power

supply to the appliance and remove the blower access door. The speed of the

blower must be increased by changing from a lower motor speed tap to a

higher speed tap, refer to Figure 10.

5. Checkout Procedure

Before any system of oil piping is finally put into service, it shall be carefully

tested to assure that it is “gas-tight”, as indicated in the Heating System

Initial Startup section of this manual.

NOTICE: All controls on the unit should be checked for proper

functioning prior to the qualified service personnel leaving the job site.

Specifically the following should be checked:

a. With heating system in normal heating operation, check to make certain

blower will start and stop automatically under control of the indoor

thermostat.

b. Check safety limit control as follows:

i. Shut off incoming power.

ii. Block return air opening or disconnect blower motor leads.

iii. Restore power to appliance.

iv. In the heating mode, set the thermostat above room temperature

producing “a call for heat”.

v. When high air temperatures are reached within the heating section, the

high limit control should act to shutdown the burner.

vi. Shut off the electrical power.

IMPORTANT: Remove blockage or reconnect blower motor and

restore power.

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Thermo-pride MODEL OPA Manuel d'utilisateur Page 40