Unitary products group P-HMX12F05701 Installation Instruction Download Page 20

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035-17473-000-B-1101

Unitary Products Group

FIGURE 11 : SEQUENCE OF OPERATION

IDLE STATE

THERMOSTAT CALLS FOR HEAT

SAFETY CHECK FOR FLAME

BURNER MOTOR STARTS

TRIAL FOR IGNITION

FLAME

NO FLAME

BURNER FLAME MONITORED

CARRYOVER STATE

•

Provides Continuous Spark

•

LED Diagnostic Light On

•

Start Carryover Timer

NO FLAME

FLAME

FLAME LOST

CARRYOVER TIMER EXPIRES

RUN STATE

•

Ignitor Turns Off

THERMOSTAT SATISFIED

R7997 SHUTS OFF:

•

Burner Motor

•

LED Diagnostic Light

RETURNS TO IDLE STATE

REMAINS IN IDLE STATE

LOCKOUT STATE

R7997:

•

Shuts off burner motor

•

Shuts off ignitor

•

Fast Flashes LED
diagnostic light.

TO EXIT LOCKOUT

PRESS RESET

R7997:

•

Shuts off burner motor

•

Shuts off ignitor

•

Slow Flashes LED
diagnostic light.

RECYCLE TIMER STARTS

RECYCLE TIMER EXPIRES

(60 SECONDS)

R7997

SEQUENCE

OPERATION

R7184

R7184 SHUTS OFF

Summary of Contents for P-HMX12F05701

Page 1: ...CK TEMPERATURE 11 CIRCULATING AIR BLOWER 12 MAINTENANCE AND SERVICE 13 FURNACE INSTALLATION SET UP 13 OPERATING INSTRUCTIONS 14 WIRING NOTES 18 CONTINUOUS FAN OPERATION 18 ACCESSORIES 18 THERMOSTAT HE...

Page 2: ...talled and set up by a qualified contractor P HMX12F05701 and P HMX12F08001 are oil fired forced air multi positional furnaces with an output capacity range of 58 000 BTU Hr to 79 000 BTU HR These fur...

Page 3: ...ible When possible the unit should be centralized with respect to the supply and return air duct work A central location minimizes the trunk duct sizing All models may be installed on com bustible flo...

Page 4: ...n the upflow position The furnace may be installed in either of the horizontal positions warm air discharging left or warm air discharging right by following these steps 1 Rotate the furnace 90 to the...

Page 5: ...the unit is specifi cally approved for such service The blower speed must be checked and adjusted to compensate for the pressure drop caused by the evap orator coil Refer to Appendix B for recommende...

Page 6: ...8001 270 330 405 505 P HMX14F10001 250 300 355 430 P HMX12F12001 225 300 365 430 Chimneys with Thermal Resistance greater than R6 P HMX12F5701 185 200 220 250 P HMX12F08001 175 185 195 215 P HMX14F100...

Page 7: ...trolled by the ST9103 ELECTRONIC FAN TIMER EFT combined with an R7184 Oil Pri mary Control These controls provide for add on air conditioning The ST9103 EFT is located in a control box mounted to the...

Page 8: ...from inside wall stacks etc For thermostats with heat anticipators the heat antici pator should be adjusted to the amperage draw of the heating control circuit as measured between the R and W termina...

Page 9: ...gle and two stage oil pumps All dis tances are in feet In retrofit applications where an existing oil line system is in place a vacuum check will help determine whether a 2 stage oil pump is necessary...

Page 10: ...s must not come into contact with the burner head OIL BURNER SET UP The burner air supply is adjusted to maintain the fuel to air ratio to obtain ideal combustion conditions A lack of air causes soft...

Page 11: ...e spots are found on the smoke test filter paper it is usually a sign of unburned fuel This indicates poor combustion This type of problem may be caused by excess draft excess air or contami nated fue...

Page 12: ...both modes is to use a piggy back connector accommodating both wires on a single motor tap It is also acceptable to con nect the selected motor speed with a pig tail joined to both heating and coolin...

Page 13: ...ditions it will not require oiling for the first two years Oil sparingly a few drops in each oil port with SAE 20 non detergent oil Oiling is most easily done with a tele spout oilier This oilier has...

Page 14: ...l oil leaks gross air leakage from the supply air ductwork unusual noises originating any where within the heating system which may cause some concern or annoyance to the home owner etc F Be sure that...

Page 15: ...0 AF76BO 0 50 70 A 100 PSIG 0 50 GPH F0 3 3 8 in P HMX12F08001 79 000 AF76BO 0 70 70 A 100 PSIG 0 70 GPH F0 3 3 8 in P HMX14F10001 100 000 AF76XN 0 85 70 A 100 PSIG 0 85 GPH F3 2 3 4 in P HMX20F12001...

Page 16: ...ings Flue Filter Ship Supply Air D x E Return Air perm Weight Width A Depth B Height C Side F x G Bottom Diam Height H lb P HMX12F05701 P HMX12F08001 22 31 49 20 x 20 14 x 22 14 x 22 5 42 16 x 25 x 1...

Page 17: ...035 17473 000 B 1101 Unitary Products Group 17 FIGURE 9 WIRING DIAGRAM OIL FURNACE WITH ST9103A EFT R7184A CONTROL...

Page 18: ...vided when the continuous speed is activated If the electronic air cleaner must run during continuous low speed fan operation wire the EAC into the furnace L1 terminal The HUM terminals provide power...

Page 19: ...er remains lit b Turns on LED diagnostic light c Starts carryover timer Flame and call for heat are monitored f flame is lost and lockout timer has not expired R7184 will return to trial for ignition...

Page 20: ...LAME FLAME FLAME LOST FLAME LOST CARRYOVER TIMER EXPIRES RUN STATE Ignitor Turns Off THERMOSTAT SATISFIED R7997 SHUTS OFF Burner Motor LED Diagnostic Light RETURNS TO IDLE STATE REMAINS IN IDLE STATE...

Page 21: ...ll for cool G and Y terminals are de energized Cooling contactor is de energized immediately Circulator fan turns off immediately FAN Thermostat begins call for fan G ter minal is energized Circulator...

Page 22: ...R7184 is in the run state by pressing the reset but ton The LED diagnostic light will flash the following code TROUBLESHOOTING IMPORTANT Due to the potential hazard of line voltage only a trained exp...

Page 23: ...the oil primary con trol Voltage should be 120 vac between the black and white lead wire on the oil primary control 3 Check indicator light with burner off no call for heat no flame Indicator light is...

Page 24: ...on Go to step 8 Ignition is on but no oil is being sprayed into the combustion cham ber Check oil supply and oil ine valve Check for filter blockage or seized oil pump 8 Check indicator light after f...

Page 25: ...wiring connections loose connectors etc Furnace will not start without first pushing oil primary control reset button Happens on frequent basis No fuel oil Check fuel oil supply Check that all hand op...

Page 26: ...rage tank filter and or fuel oil in line filter Defective oil pump Check burner motor fuel oil pump coupling Check oil pump pressure Replace fuel oil pump if necessary Fuel oil line partially clogged...

Page 27: ...ampers including registers in unused rooms check system temperature rise If temperature rise is too high speed up blower fan Defective high limit control Test high limit function of all limit switches...

Page 28: ...CE TABLE Installation Contractor Model No Serial No Date Installed Contractor Address Postal Code Telephone No Service Contractor if different from installation contractor Service Tech Telephone No Af...

Page 29: ...035 17473 000 B 1101 Unitary Products Group 29 NOTES...

Page 30: ...035 17473 000 B 1101 30 Unitary Products Group NOTES...

Page 31: ...035 17473 000 B 1101 Unitary Products Group 31 NOTES...

Page 32: ...Conditioning Unitary Products Group 5005 York Drive Norman Oklahoma 73069 Subject to change without notice Printed in U S A Copyright by Unitary Products Group 2001 All rights reserved Supersedes 035...

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