All installations and services must be performed by qualified service personnel.
ORIFICE CHART
FURNACE | L.P. | NAT. |
MODEL NO. |
|
|
|
|
|
.113 OR #33 DMS | .196 OR #9 DMS | |
.1285 OR #30 DMS | .213 OR #3 DMS | |
.144 OR #44 DMS | .238 OR B DMS | |
.213 OR #3 DMS | .277 OR J DMS | |
.265 OR 17/64 DMS | .332 OR Q DMS | |
.297 OR 19/64 DMS | .390 OR 25/64 DMS | |
.332 OR Q DMS | .468 OR 15/32 DMS | |
|
|
|
D. FURNACE CHECKOUT PROCEDURE
Before any system of gas piping is finally put into service, it shall be carefully tested to assure that it is gas tight as indicated in Gas Piping Section of Burner 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:
With furnace in normal heating operation, check to make certain blower will start and stop automatically under control of fan switch.
a. Check safety limit control as follows:
1. | Shut off incoming power. |
2. | Block return air opening or remove blower belt on belt drive or unplug blower at terminal strip on direct drive. |
3.Restore power to furnace.
4.Set thermostat above room temperature calling for heat.
5. When temperatures are reached in furnace at limit control setting with blower out of operation, burner should be shut off.
6. Shut off electrical power, remove blockage and restore power.
b. Make certain thermostat will automatically start and stop the burner and fan control operates blower properly.
IV. INSTALLER'S INSTRUCTIONS TO USER:
After completing the installation, the installer shall inform and demonstrate to the homeowner: 1. The Sequence of Operations. 2. Operating Instructions and Routine Maintenance. 3. Review label reproductions at beginning of this manual.
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