FURNACE ACCESSORY KITS
Kit |
| Order Number | |
A/C Coil Box |
| 911969A | |
Side Return Air Kit |
| 904003 | |
Top Return Air Kit |
| 904015 | |
Sloped Roof VentilAire III Kit | 914098 | ||
Sloped Roof VentilAire IV Kit | 914229 | ||
Soffit VentilAire Kit |
| 917201 | |
Concentric Vent Termination Kit | 903578 | ||
(for horizontal and vertical venting) | |||
| |||
Horizontal Exterior Vent |
|
| |
Mounting Kit | 3"PVC | 902375 | |
Neutralizer Kit - All Models | 902377 | ||
Table 12. Accessory Kits
Gas Valve – The gas valve controls the flow of gas to the burners. When the gas valve is energized it automatically opens and regulates the gas pressure in the manifold.
Pressure Switch – The pressure switch veri- fies that the inducer is drawing the combustion gases through the heat exchanger. It also senses a blocked condensate drain condition.
Deck Limit Switch (Auxiliary Limit) – The deck limit protects the furnace filter tempera- ture from overheating when the motor has malfunctioned. If the deck switch opens, the power for the furnace will shut down (see Figure 29).
Supply Air Limit Switch – The supply air limit switch prevents the air temperature leaving the furnace from exceeding the maximum outlet air temperature.
Vent Safety Switch – The vent safety switch shuts the furnace down if the outlet flue gas temperature increases above 145°F. This switch protects the plastic flue system and the inducer from
Flame
MAINTENANCE
It is recommended that the furnace be checked yearly. At a minimum, this check should include the following items:
!WARNING:
To avoid electric shock, personal injury, or death, turn off the power at the disconnect or the main service panel before performing any maintenance.
!WARNING:
Holes in the vent pipe or heat exchanger can cause products of combustion to enter the occupied space. Replace the vent pipe or heat exchanger if leaks are found. Failure to prevent products of combustion from being circulated into the occupied space can crate poten- tially hazardous conditions, including carbon monoxide poisoning, that could result in personal injury or death.
Combustion Air and Vent System
Check the combustion air and vent pipe to ensure that it is not damaged, corroded or blocked by debris. Any damaged section of vent pipe must be replaced, and any obstruc- tion or blockage must be removed prior to operating the furnace.
Air Filter
An air filter is supplied with the furnace as shipped from the factory. Filters should be changed or cleaned monthly during the heating season. New or newly renovated homes may require more frequent changing until the con- struction dust has been removed.
29
