If the furnace is equipped with NOx screens and is to be 7. To measure total static pressure, add supply duct pressure detailed information. used with LP (propane) gas, the screens must be removed to the return duct pressure, add pressure drop across the ‘A’ prior to start-up. coil, and add pressure drop across the filter. Ignore negative 2. Drip leg in the gas line must be installed. signs on the readings. 3. The furnace controls require correct polarity on the power 8. Inlet gas pressure shoul
Slow Amber Flash - Normal operation with call for cooling. Two Amber Flashes - Normal operation with call for heat. Three Amber Flashes - Normal operation, burner is on at end of thermostat cycle. Six Amber Flashes - Normal operation with call for heat pump heating. Any Red Flash - Fault condition. NOTE: 4 or 5 flashes may indi cate a blown fuse on the circuit board. Application Upflow Downflow Horizontal Top 1" 0" 0" Vent 0" 0" 0" Rear 0" 0" 0" Side 0" 0" 1" Front* 0" 0" 0" Floor Combustible Co
Slow Amber Flash - Normal operation with call for cooling. Two Amber Flashes - Normal operation with call for heat. Three Amber Flashes - Normal operation, burner is on at end of thermostat cycle. Six Amber Flashes - Normal operation with call for heat pump heating. Any Red Flash - Fault condition. NOTE: 4 or 5 flashes may indi cate a blown fuse on the circuit board. Application Upflow Downflow Horizontal Top 1" 0" 0" Vent 0" 0" 0" Rear 0" 0" 0" Side 0" 0" 1" Front* 0" 0" 0" Floor Combustible Co
Theinstallationmustcomplywithregulationsoftheservinggassupplier, localbuilding, heating, plumbing, andothercodes. Inabsenceoflocalcodes, theinstallationmustcomplywithnationalcodesandallauthoritieshavingjurisdiction. B24.25” .56” .56” 20” 3” 23.8” .56” CombustionAirInlet2” DiameterVentConnectionOutletBDURINGINSTALLATION, DOORSMUSTREMAINONFURNACEWHENMOVINGORLIFTING. VentConnectionOutlet † Other airflows are available. see Tech Guide for all CFM options. * Cool Tap. ** Adjustment Tap. LED INDICATOR
If the furnace is equipped with NOx screens and is to be 7. To measure total static pressure, add supply duct pressure detailed information. used with LP (propane) gas, the screens must be removed to the return duct pressure, add pressure drop across the ‘A’ prior to start-up. coil, and add pressure drop across the filter. Ignore negative 2. Drip leg in the gas line must be installed. signs on the readings. 3. The furnace controls require correct polarity on the power 8. Inlet gas pressure shoul
Refer to “COMBUSTION AIR SOURCE FROM OUTDOORS and VENT AND SUPPLY AIR SAFETY CHECK” in these instructions for additional information and safety check procedure. 2. The duct shall be either metal, or a material meeting the class 1 requirements of CAN4-S110 Standard for Air Ducts. 3. The duct shall be least the same cross-sectional area as the free area of the air supply inlet opening to which it connects. 4. The duct shall terminate within 12 in (30.5 cm) above, and within 24 in (61 cm) horizonta
The equivalent length of the vent system is the total length of straight pipe PLUS the equivalent length of all of the elbows. The following rules must also be followed: 1. Long radius (sweep) elbows are recommended. Standard elbows may be used, but since they have a longer equivalent length, they will reduce the total length of pipe that will be allowed. Short radius (plumbing vent) elbows are not allowed. The standard dimensions of the acceptable elbows are shown below. 2. The maximum equiv
ID MODELS LO COMP Single Stage Compressor (OUT) O Reversing Valve Energized in Cool HI COMP Second Stage Compressor (OUT) TWO STAGE AIR CONDITIONER C 24 – Volt Common R 24 – Volt Hot Y1 First Stage Compressor Y2 Second Stage Compressor External Humidistat (Optional) Open on Humidity Rise 2 Part Number: S1-2HU16700124 2 TP(8,L)C YP(8,L)C CP(8,L)C LP(8,L)C FIGURE 21: Thermostat Chart - Two Stage Air Conditioner with Single Stage Thermostat – Variable Speed or PSC Modulating Furnace Johnson Control
FIGURE 11: Typical Suspended Furnace / Crawl Space Installation For modulating furnaces to be used in the downflow position, it is necessary to rotate the gas valve so that it is upright when the furnace is installed. Loosen the pipe union between the gas valve and manifold, rotate the valve as far upward as it will go, and tighten the union. See Figure 13, "Downflow Installation - Gas Valve Rotation". Angle Iron Bracket 6” Min. Between Rod & Front of Furnace 1” Max. Between Rod & Back of Furnac
. .24 Double Vertical Combustion Air Intake and Vent Termination .....24 Direct Vent Air Intake Connection and Vent Connection .........25 Combustion Airflow Path Through The Furnace Casing .........25 Outside and Ambient Combustion Air........................26 Attic and Crawl Space Combustion Air Termination .............27 Gas Valve.............................................30 Reading Gas Pressure...................................30 Furnace Control Board............................