Allied AV050B3, Installation And Servicing Instructions

Page 1: ...RENCE Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance Installation and service must be performed by a qualified installer service agency or the gas supplier Installation by an unqualified person may lead to equipment damage and or a hazardous condition which may cause bodily injury and harm and as such at the sole discretion of the ...

Page 2: ...nstall furnace to operate within the furnace s intended temperature rise range with a duct system which has an external static pressure within the allowable range as specified in Furnace Specifications on page 3 of these instructions See furnace rating plate 7 When a furnace is installed so that supply ducts carry air circulated by the furnace to areas outside the space containing the furnace the ...

Page 3: ...FIRE AV050B3 29 1 2 13 1 2 38 1 4 11 1 2 20 3 8 12 21 5 8 4 15 9 9 14 30 60 40 70 105 AV075B3 29 1 2 13 1 2 38 1 4 11 1 2 20 3 8 12 21 5 8 4 15 9 9 14 30 60 40 70 113 AV100B4 29 1 2 17 38 1 4 15 20 3 8 15 1 2 21 5 8 4 15 11 7 14 30 60 40 70 141 AV125B5 29 1 2 20 1 2 38 1 4 18 1 2 20 3 8 19 21 5 8 4 20 11 7 14 30 60 40 70 167 REDUCER SUPPLIED WITH FURNACE WHEN CONNECTION SIZE IS DIFFERENT THAN PIPE...

Page 4: ...0 1550 1450 1750 NORM 2000 2200 1700 1800 2070 1530 1600 1840 1360 1400 1610 1190 THE UNIT AS SHIPPED IS FACTORY SET AT SETTING A TO RUN AT THE MIDDLE OF THE HEATING RISE RANGE SHOWN ON THE UNIT RATING LABEL When operating the furnace in the heating mode the static pressure and the temperature rise supply air temperature minus return air temperature must be within those limits specified on the rat...

Page 5: ...FURNACE WIRING SPECIFICATIONS 20571201 Issue 0527 Page 5 of 28 ...

Page 6: ...rch Park Quincy MA 02269 or the American Gas Association 1515 Wilson Boulevard Arlington VA 22209 or the Canadian installation codes obtainable from Canadian Standards Association 178 Rexdale Boulevard Etobicoke Ontario Canada M9W 1R3 This furnace is designed for minimum continuous return air temperature of 60 F dB or intermittent operation down to 55 F dB such as when used with a night setback th...

Page 7: ...ntersection of the top and two sides of the furnace jacket and building joist studs or framing Top Sides Back Front Vent 2 1 1 6 6 with single wall vent 2 1 1 3 1 with B1 vent For closet installation see Air for Combustion and Ventilation Failure to comply with all of the clearances will create a fire hazard INSTALLATION POSITIONS The furnace should also be located as near to the center of the air...

Page 8: ...bric softeners for clothes dryers Masonry acid washing materials Unrefined gases Contaminated combustion air may cause premature failure of the heat exchanger that may lead to a hazardous condition and or bodily harm or loss of life Adequate Ventilation and Combustion Air This section is provided to give guidelines for the introduction of air for ventilation and combustion air The total quantity o...

Page 9: ...se openings must be located 12 inches from the top and bottom of the furnace area respectively and must be at least 3 inches long on the smaller side of the opening See Figure 2 Neither opening can be blocked at any time Figure 2 CONFINED SPACE INDOOR AIR TOTAL INPUT Btuh MIN FREE AREA Sq In ROUND DUCT Dia In 40 000 60 000 80 000 100 000 120 000 140 000 160 000 100 100 100 100 120 140 160 12 12 12...

Page 10: ...on of rectangular air ducts must not be less than 3 inches Each opening must have a free area of not less than one square inch per 2 000 Btu per hour of total input of all appliances within the Confined Space These openings must be located 12 in from the top and bottom of the furnace area Neither opening can be blocked at any time See Figure 6 Figure 6 CONFINED SPACE OUTDOOR AIR THROUGH HORIZONTAL...

Page 11: ... is located close to the blower inlet there should be at least one 90 air turn between blower and return grille Further reduction in sound can be accomplished by installing acoustical air turning vanes and or lining the inside of the duct with acoustical material 4 It is recommended that the supply duct be provided with a removable access panel This opening shall be accessible when the furnace is ...

Page 12: ...prevent operation of either the cooling unit or furnace unless the damper is in the full cool or full heat position The coil MUST be installed on the air discharge side of the furnace Under no circumstances should the air flow be such that cooled conditioned air can pass over the furnace heat exchanger This will cause condensation in the heat exchanger and possible failure of the heat exchanger th...

Page 13: ... wall by use of one of the following auxiliary draft inducer kits Table 4 AUXILIARY DRAFT INDUCERS Vent Kit MFR Model Furnace Input Field Controls Co SWG 4G 50000 75000 100000 or 125000 Tjernlund Products Inc SS1 OR SS1C 50000 75000 100000 or 125000 GPAK J 50000 75000 or 100000 GPAK 1 100000 or 125000 See rating label on this furnace for input Vent Length Max 60 ft Min 12 ft Vent Diameter 4 in Fol...

Page 14: ...essure switch tubing from the combustion blower 3 Remove the four 4 screws that secure the combustion blower adaptor plate to the flue collector box taking care to support the blower assembly so that it does not fall 4 Rotate the blower 90 degrees clockwise so that the outlet of the blower is pointing toward the right side panel of the furnace 5 Insure that the gasket is in place between the blowe...

Page 15: ...ned above return doors windows exhaust fans fireplace dampers and any other gas fired burning appliance to their previous conditions of use ELECTRICAL CONNECTIONS When installed the furnace must be electrically grounded in accordance with local codes or in the absence of local codes with the U S National Electrical Codes ANSI NFPA 70 or CSA Standard C22 1 Part 1 Canadian Electrical Code For proper...

Page 16: ...her chemical constituents of the gases to be conducted through the piping For proper furnace operation the maximum gas supply pressure is 14 w c and the minimum gas supply pressure is 4 5 w c Natural 11 w c LP as shown on rating label Before any system of gas piping is finally put into service it should be carefully tested to determine if it is gas tight Check all piping for leaks using soapy wate...

Page 17: ... the ignition control board The control waits for a 1 second thermostat debounce delay before responding to the call for fan by ramping the circulating blower up to 50 of the cooling speed but not less than 425 cfm s When the call for continuous fan is satisfied the control immediately de energizes the circulating blower Dehumidification For situations where humidity control is a problem a dehumid...

Page 18: ...ge heat W1 and W2 The control changes the inducer from low to high speed and confirms the high fire pressure switch contacts are closed and the gas valve energizes on 2nd stage heat The circulating air blower then ramps up to 2nd stage heat speed When the 2nd stage call for heat is satisfied the control shuts off the gas valve and runs the combustion air blower for a post purge period of 5 seconds...

Page 19: ...en made gas piping and electrical wiring completed and the furnace has been properly vented the unit should be started and adjusted for proper operation Check off the following steps as they are completed 1 Be sure all electrical power is OFF 2 Check all wiring using proper wiring diagram on inside of the control box cover 3 Turn ON the electrical power 4 Set the ignition system control switch in ...

Page 20: ...input 1 Turn OFF all other gas appliances except for pilot burners served by the same gas meter 2 With furnace operating in full heat cycle note how many seconds it takes for one full revolution of the smallest dial on the meter Typically this will be a 1 2 or 1 cubic foot test dial 3 Using the number of seconds for one revolution and the size of the meter dial determine the cubic foot per hour of...

Page 21: ... and the heating value can be found in Table 7 TABLE 7 High Altitude Manifold Pressure Derate with standard 42 orifice Natural 54 orifice LP sizes Altitude Feet Heating Value of Natural Gas BTU FT3 LP Propane 900 950 1000 1050 1100 2500 0 999 4 32 3 88 3 50 3 16 2 84 10 1000 1999 4 32 3 88 3 50 3 16 2 84 10 2000 2999 3 67 3 29 2 97 2 68 2 41 8 46 3000 3999 3 38 3 04 2 74 2 47 2 22 7 74 4000 4999 3...

Page 22: ...result in injury due to burns The switches are located behind the front access door Remove front access door from the furnace and reset by pushing in the button in the middle of the switch between the two wire connections See Figure 16 Very little force is required to push the reset button and a click should be heard when the switch resets Figure 16 FLAME ROLLOUT SWITCH Pressure Switch Check To ch...

Page 23: ...SEQUENCE OF OPERATION DIRECT IGNITION SYSTEM CONTROL 20571201 Issue 0527 Page 23 of 28 ...

Page 24: ...hed This will expose both the burner and flue openings of the primary heat exchangers 6 Vacuum the length of each heat exchanger tube using a straight attachment into the burner openings and the flue openings 7 Replace the flue collector box burner opening inlet plate and burner manifold assembly Insure that all gaskets are properly positioned and that no leaks exist 8 Reattach all wiring and pipi...

Page 25: ...aining screws from the front of each blower leg See Figure 18 These are the two 2 screws located in the blower compartment that secure the blower legs to the blower partition panel 7 Slide the blower forward about two 2 inches This will disengage the rear of the blower legs from the blower partition Rotate the front of the blower down to clear the control box mounting tabs on the underside of the ...

Page 26: ...is flashed first the oldest fault code is flashed last To clear the fault code history press and hold the pushbutton switch in for more than 5 seconds before releasing High Heat State LED On these models a green LED is provided on the control board to indicate high heat state see Table 10 CFM LED An amber LED is provided on the control board to display CFM To determine what CFM the motor is delive...

Page 27: ...WIRING DIAGRAM 20571201 Issue 0527 Page 27 of 28 ...

Page 28: ...NOTES 20571201 Issue 0527 Page 28 of 28 ...