If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes. Step 6 — Rig and Place Unit Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 7 for additional information. Lifting holes are provided in base rails as shown in Fig. 7. Refer to rigging instructions on unit

100.1 Rev. 6/30/65 CLEARANCES FROM COMBUSTIBLES In "large” rooms 6" from caging. & vent hood 1" from sides & top of supply plenum In confined spaces 0" from casing sides, rear & bottom 6" from casing front & type C vent connector 3" from top & sides of uninsulated supply plenum SHIPPING WEIGHT 180 lbs. HEATING RATINGS AND CAPACITIES BURNER a CONTROL ACCESS ACCESS DOOR FILTER AND BLOWER BOTTOM RETURN OPENING - -18j--16#- Rating1 Input2 BTUH 100,000 Output BTUH 80,000 Air Delivery @

j Through the base connectors for gas and electric conduit/piping j Stainless steel gas heat exchanger (includes tubes, vestibule plate and collector box) j Economizer with dry bulb sensing and barometric relief j Economizer with enthalpy sensing and barometric relief j 2 position motorized outdoor air damper j Non- --fused disconnect j Powered 115- --volt convenience outlet j Non- --powered 115- --volt convenience outlet j High static evaporator fan motor j Return Air smoke detector j Supply Ai

The qualified installer or agency must use factory--authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing. Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloths for brazing operations and have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult local building codes and appropriate national ele

A FAILURE TO FOLLOW THIS WARNING COULD RESULT IN PERSONAL INJURY OR DEATH. ! CAUTION ALTHOUGH SPECIAL CARE HAS BEEN TAKEN TO MINIMIZE SHARP EDGES, BE EXTREMELY CAREFUL WHEN HANDLING PARTS OR REACHING INTO THE FURNACE. ! FILTERING OUT TROUBLE A dirty filter will cause excessive stress on the furnace blower motor and can cause it to overheat and automatically shut down. The furnace filter should be checked every 3 or 4 weeks and cleaned if necessary. If your furnace filter needs replacing, be sure

55 -- Smoke Detector Sensor Smoke Detector Locations Supply Air — The Supply Air smoke detector sensor is located to the left of the unit’s indoor (supply) fan. See Fig. 56. Access is through the fan access panel. There is no sampling tube used at this location. The sampling tube inlet extends through the side plate of the fan housing (into a high pressure area). The controller is located on a bracket to the right of the return filter, accessed through the lift--off filter panel. Smoke Detector

Applications are easy with 4-way multipoise design, through-the-furnace downflow venting, 13 different venting options, and a door designed for easy service access. An inner blower door is provided for tighter sealing in sensitive applications. The 310AAV/JAV furnace is approved for use with natural or propane gas, and the 310JAV is also approved for use in Low NOx Air Quality Management Districts. STANDARD FEATURES • Noise elimination combustion system • Microprocessor based control center A

Further reference is made to the current edition of the American National Standard “Installation of Gas Appliances and Gas Piping,” Z21.30. Model 394 Gas Furnaces are shipped from the factory completely assembled and wired ready for indoor heating installation. They are manufactured with two types of blowers: belt and direct drive. The four smaller sizes, 50, 80, 100, and 125, are direct drive only. All sizes incorporate a low-voltage terminal strip for convenience of field wiring (except 50,00

The shutter on the draft inducer should be initially set at 50% open, the cycle time at 8 minutes and the pilot draft switch on the primary control at medium. 3. We don’t recommend direct venting when corn is the primary fuel. For corn burning, the GBU070 needs a natural draft and this can only come from a vertical chimney. We do recommend stainless chimney be used when corn is the fuel. Corn, by nature, is more acidic than pellets and can eat away steel or galvanized chimney. 4. The moisture co