background image

 

installation and service manual

oil-fired unit heaters

model Por

models manufactured after september 2007 with Beckett clean cut Burner

4-522.4

5H75804 rev.d

inspection on arrival

1.  Inspect unit upon arrival. In case of damage, report 

immediately to transportation company and you local Modine 
sales representative.

2.  Check rating plate on unit and motor to verify that power 

supply and motor specification requirements meet available 
electric power at the point of installation.

3.  Inspect unit received for conformance with description of 

product ordered (including specifications where applicable).

September, 2007

THIS MANUAL IS THE PROPERTY OF THE OWNER. 

PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB. 

 

WARNING

improper installation, adjustment, 
alteration, service or maintenance can 
cause property damage, injury or death, 
and could cause exposure to substances 
which have been determined by various 
state agencies to cause cancer, birth 
defects or other reproductive harm. read 
the installation, operating and maintenance 
instructions thoroughly before installing or 
servicing this equipment.

FOR YOUR SAFETY

WHat to do if you smell gas:

1. open windows.
2. do not try to light any appliance.
3. do not touch any electrical switch; do   
  not use any phone in your building.
4. immediately call your gas supplier. 

 CAUTION

to prevent premature heat exchanger 
failure do not locate any oil-fired units in 
areas where chlorinated, halogenated or 
acid vapors are present in the atmosphere.

FOR YOUR SAFETY

the use and storage of gasoline or other 
flammable vapors and liquids in open 
containers in the vicinity of this appliance 
is hazardous.

IMPORTANT

the use of this manual is specifically 
intended for a qualified installation and 
service agency.  all installation and service 
of these units must be performed by a 
qualified installation and service agency.

Summary of Contents for POR

Page 1: ...ry or death and could cause exposure to substances which have been determined by various state agencies to cause cancer birth defects or other reproductive harm read the installation operating and maintenance instructions thoroughly before installing or servicing this equipment FOR YOUR SAFETY WHat to do if you smell gas 1 open windows 2 do not try to light any appliance 3 do not touch any electri...

Page 2: ...of not less than one square inch per 1 000 BTU Hr input rating of all units in the enclosure with a minimum of 100 square inches for each opening whichever is greater IMPORTANT 1 To prevent premature heat exchanger failure do not locate ANY oil fired appliances in areas where corrosive vapors i e chlorinated halogenated or acid are present in the atmosphere 2 To check most of the Possible Remedies...

Page 3: ...ade No 1 or 2 with a flash point not less than 100 F is approved for these unit heaters as specified by ASTM D396 73 Standard Specification for Fuel Oils or the Canadian Government Specification Board 3 GP 28 American Society for Testing and Materials si metric conversion factors unit location CAUTION 1 Do not locate units in tightly sealed rooms or small compartments commonly referred to as confi...

Page 4: ...r suspension methods note A pipe hanger adapter kit shown in figure 4 1 is available as an accessory from Modine or can be self fabricated Kit consists of two drilled 3 4 I P S pipe caps and two 1 2 13 x 1 3 4 capscrews to facilitate threaded pipe suspension Two kits are required for mounting each unit figure 4 1 suspension methods venting 1 To dispose of flue gasses all oil fired heaters must be ...

Page 5: ...r in at least 1 2 inch thin wall or flexible metal conduit thermostat Wiring The proper wiring for a single thermostat for each unit heater is shown in Figure 6 1 The multiple unit wiring diagram shown in Figure 6 2 illustrates typical wiring and connections used with a centralized oil distribution system for multiple unit installations This diagram is provided as a reference only and is not inten...

Page 6: ...NG PRIMARY CONTROL This diagram is provided for reference only System operation and compliance with local codes is the responsibility of the installer Note All wiring shown as dashed lines is field wiring FIELD WIRING JUNCTION BOX ON HEATER 115V 60HZ 1Ø GROUND IN J BOX FUSED DISCONNECT SWITCH BY OTHERS PRESSURE SWITCH ACCESSORY BURNER MOTOR LOW VOLTAGE T STAT BY OTHERS UNIT 1 T T BURNER HOUSING PR...

Page 7: ...ipe systems See Figure 8 1 If more than one unit is piped to the same tank separate suction oil lines must be installed for each unit A single common line however can be piped in series for fuel oil return one Pipe system The fuel units supplied contain an internal by pass and are shipped from the factory with the by pass plug in place for one pipe installations only supply line connected to fuel ...

Page 8: ...ceed 3 PSIG For multiple unit systems as shown in Figures 9 1 and 9 2 install a generous capacity oil filter in the inlet line to booster pump suction line Refer to Figure 6 2 for a typical wiring diagram for multiple unit installations oil tanks To provide for a safe and continuous fuel supply the tanks and piping to the unit heaters must be installed in accordance with state and local codes and ...

Page 9: ...4 522 4 9 installation figure 9 1 typical loop system for multiple units figure 9 2 typical Pressurized supply system for multiple units ...

Page 10: ...fuel filter oil safety valve osv The Oil safety valve can be installed in any position Preferred position is cover up The IN port is connected to the supply line the OUT port to the burner line Do not install backwards The Oil safety valve is opened by a slight vacuum appearing at the outlet of the Oil safety valve generated by the burner fuel unit Failure to observe the above caution may result i...

Page 11: ...When the fan and limit switch detects the proper temperature it will turn on the circulating air fan The time it takes before the circulating air fan turns on after the burner is started is a function of the temperature setting on the fan and limit switch When the thermostat is satisfied the primary control will shut off the burner The circulating air fan will shut off when the fan and limit switc...

Page 12: ... temperatures 2 Open shut off valves at tank and in oil supply line to the burner 3 Turn on power to the unit If burner does not start immediately push reset buttons on burner motor and primary control 4 For units installed on a single pipe system vent air from fuel unit and oil supply lines immediately after the burner motor starts Vent air by opening bleeder valve on fuel unit until oil appears ...

Page 13: ...ction procedures 2 Tighten fan guard and motor bracket Check fan for proper clearance free rotation and firm connection to motor shaft Clean fan blade with detergent or compressed air 3 Fan motor is permanently lubricated for normal operation Under severe conditions lubricate with non detergent SAE 20 motor oil 4 Routine cleaning of the unit casing and louvers is recommended to remove dirt grease ...

Page 14: ... for an accumulation of dirt or soot Clean if necessary with a soft cloth 7 Lubricate burner motor with a few drops of non detergent oil at both motor oil holes twice each year on units that are not permanently lubricated with sealed bearings Burner adjustments It is recommended that a combustion check be made on the burner each year or whenever replacing a nozzle This will help assure efficient c...

Page 15: ...content Zero the CO2 analyzer and insert probe into flue pipe and draw sample of the flue gas into analyzer The concentration of CO2 should be 11 5 to 12 5 CO2 levels above 12 5 are not recommended as sooting could occur as conditions and fuel vary at zero smoke G Conclude testing by reading stack temperature and subtract room temperature to get the net stack temperature Using this figure and the ...

Page 16: ... running and should not drop to less than 80 PSI and hold there after the burner is shut off If the pressure drops to zero the fuel unit should be replaced fire Pot service The ceramic fiber fire pot will seldom if ever require replacement unless it is accidentally damaged during a heat exchanger cleaning operation To replace take off the front access panel and remove all fire pot pieces Carefully...

Page 17: ...put input output cfm delivery temp max mtg Heat model Btu Hr gPH Btu Hr 70 f fPm rise f Ht ft throw ft Por 100 119 000 85 100 000 1890 460 49 12 39 Por 145 175 000 1 25 145 000 2400 580 56 13 5 50 Por 185 231 000 1 65 185 000 3200 740 54 12 51 Deflector blades pitch 45 toward the floor Heated air Mounting heights measured from floor to bottom of unit The maximum mounting height is that height abov...

Page 18: ...el pump service diagnosis Problem d Burner operates but fan does not operate 1 Fan motor failure 1 a Check for loose electrical connections Check wiring with diagram on rear of heater b Repair or replace burned out or defective motor c Voltage too high or too low Check voltage with voltmeter 2 Loose fan 2 Tighten fan set screw 3 Defective fan switch in fan limit control 3 Replace entire control 4 ...

Page 19: ...Make sure return line is below oil level in tank 7 A single pipe system that becomes air bound 7 Loosen gauge port plug or easy flow valve and bleed oil for 15 seconds after foam is gone in bleed hose Check intake line fittings for tightness Check all pump plugs for tightness 8 Slipping or broken coupling 8 Tighten or replace coupling 9 Rotation of motor and fuel unit is not the same 9 Install fue...

Page 20: ...D HEREIN SHALL BE LIMITED TO ONE YEAR FROM DATE OF SHIPMENT FROM SELLER Heat exchanger condensers for all seller s products except non separated combustion gas fired unit Heaters and infrared Heaters all Burners except infrared Heaters and sheet metal for all seller s products BUYER S REMEDY FOR BREACH OF WARRANTY EXCLUSIVE OF ALL OTHER REMEDIES PROVIDED BY LAW IS LIMITED TO REPAIR OR REPLACEMENT ...

Reviews: