Enviroheat OMNI OWC-5 Series Installation Start-Up Maintenance Download Page 35

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Installation, Start-Up, Adjustment and Maintenance Manual

Figure 20

–

SEPARATE THERMOSTATS USED FOR HEATING AND COOLING CONTROL ON A FURNACE

Single thermostat used for cooling control on a fan coil unit. Refer to fan

coil manufacturer’s

instructions for an exact wiring schematic.

Figure 21

–

SINGLE THERMOSTAT USED FOR COOLING ON A FAN COIL UNIT

FURNACE

MINIMUM 20VA

TRANSFORMER

FAN

RELAY

FAN
DELAY

FAN
MOTOR

DUAL GAS

VALVE

PILOT

SWITCH

HIGH

LIMIT

SWITCH

COOLING

THERMOSTAT

ELECTRONIC CONTROL

BOARD (S-50)

TO FUSED

DISCONNECT

HEATING

THERMOSTAT

ELECTRONIC CONTROL

BOARD (S-50)

FAN

RELAY

FAN COIL UNIT

FAN
MOTOR

TO FUSED

DISCONNECT

Summary of Contents for OMNI OWC-5 Series

Page 1: ...OPANE FIRED AIR COOLED ABSORPTION WATER CHILLER OWC 5 Series WARNING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life IF UNIT OVERHEATS OR UNIT S GAS VALVE FAILS TO SHUT OFF DO NOT SHUT OFF ELECTRICAL SUPPLY TO UNIT INSTEAD SHUT OFF GAS SUPPLY TO UNIT CALL SERVICE COMPANY Enviro Heat 5714 1st Avenue Spo...

Page 2: ...e OWC 5 Chiller can operate using either used oil or gas propane Normal operation of the Chiller will attempt to run on used oil first then automatically switch over to gas or propane if used oil burner is turned off or not operating due to lack of fuel or flame ...

Page 3: ...ING 26 4 4 GAS SUPPLY PIPING 29 SECTION 5 ELECTRICAL CONNECTION 31 5 1 POWER SUPPLY 31 5 2 PUMP WIRING 32 5 3 CONTROL SWITCH WIRING 33 5 4 CHILLER WIRING 37 SECTION 6 START UP AND ADJUSTMENT 38 6 1 DETERMING VOLUMES OF HYDRONIC SYSTEM AND ANTIFREEZE 38 6 2 FILLING THE WATER PIPING 39 6 3 GAS PRESSURE ADJUSTMENT 41 6 4 USED OIL BURNER ADJUSTMENTS 42 6 5 CHILLED WATER TEMPERATURE REGULATION 43 SECTI...

Page 4: ...ional disregard of any of the manufacturer s instructions After unpacking the unit check the unit for integrity Due to the potential danger keep all packaging materials plastic bags polystyrene foam nails etc away from children Before installation it is recommended that all chilled water and oil gas supply piping be flushed If not flushed prior to installation residual materials may be left in the...

Page 5: ...e as indicated on the rating plate The fuel supply and water distribution systems are water tight The appliance is supplied with the type of fuel for which it is preset The oil and gas supply gallons per hour and pressure conform to the oil flow rate and gas pressure indicated on the rating plate The oil gas supply system is appropriately designed for the BTU and gas rate needed by the unit and eq...

Page 6: ...onia vapor if internal pressure exceeds 450 psig the valve closes automatically when pressure is under 450 PSIg Differential Air Pressure Switch on the combustion circuit stops the burner ignition due to insufficient combustion air flow Ignition Control Box controls the burner ignition Checks the differential air pressure switch and starts the pre mixer blower After 30 seconds of purging the ignit...

Page 7: ... the ammonia evaporates due to heat being removed from water returning from the user s required cooling application thermal blowers fan coils etc within the chilled water system The cold low pressure ammonia vapor exiting the evaporator exchanges heat with the liquid ammonia coming from the condenser in the refrigerant heat exchanger The ammonia vapor then enters the solution cooled absorber where...

Page 8: ...EFRIGERANT CYCLE STRONG SOLUTION WEAK SOLUTION VAPOR REFRIGERANT LIQUID REFRIGERANT CHILLED WATER SOLUTION PUMP EVAPORATOR LEVELING CHAMBER AND RECTIFIER GENERATOR RESTRICTOR BURNER SOLUTION COOLED ABSORBER REFRIGERANT HEAT EXCHANGER RESTRICTOR RESTRICTOR CONDENSER ABSORBER COLIS ...

Page 9: ...ence The premixer motor will then start Used Oil Primary Assuming Oil Pre heater has established set point temperature the Oil Primary will energize the burner blower motor fuel valve igniter circuitry and on burner air compressor at which time a flame is established The chiller is then in normal operation Natural Gas Secondary After a 15 second purge period the ignition control box will energize ...

Page 10: ...lled by the electronic control board continue to run for 215 seconds Chilled Water Control When the leaving chilled water temperature reaches the set point the unit will shut down If the control switch is still calling for cooling i e closed the unit will restart when the leaving water temperature reaches 1 F above the chilled water thermostat setting Low Temperature Chilled Water Control When the...

Page 11: ...ntrolled from electronic board will continue to run for the next 215 seconds Figure 2 The S 60 Electronic Control Board A 4 digit display shows the operation data example chilled water temperature and possible anomalies It also displays all relative available information data parameters values etc B Regulating Knob Encoder allows the scrolling and selection of the information on the display NOTE A...

Page 12: ...ION CHAMBER door open for chamber viewing BURNER ASSEMBLY W ON BURNER COMPRESSOR for burneer gun assembly only HINGED COMBUSTION CHAMBER AIR BLAST MANIFOLD TUBE AIR BLAST OR GAS PROPANE MANIFOLDS AIR STORAGE TANK air or additional self contained compressor AIR OR GAS PROPANE SELECTOR MANIFOLD ...

Page 13: ... Unit Chilled Water Volume 6 Gallons 0 79 Chilled Water Entering and Leaving Connections 7 FPT 1 Gas Inlet Connection FPT 1 2 Electrical Entrance Knockouts Diameter Inches 7 8 Shipping Weight Pounds 1450 Operating Weight Pounds 1350 Table 1 OWC 5 TECHNICAL DATA Notes 1 All illustrations and specifications contained herein are based on the latest information available at the time of publication app...

Page 14: ...59 912 61 123 62 333 50 59 307 59 912 61 123 62 323 59 59 307 59 912 61 123 62 333 68 59 307 59 912 61 123 62 323 77 58 701 59 912 61 123 62 333 86 54 465 59 307 61 123 62 333 95 40 546 52 650 60 517 61 727 104 53 255 56 281 113 40 546 47 203 120 39 336 Table 2 OWC 5 COOLING CAPACITY Figure 4 UNIT S DIMENSIONS 51 INCLUDES FAN GUARD 33 1 2 91 SEE FIGURE 10 FOR DETAIL SHIPPING CRATE DIMENSIONS 58 H ...

Page 15: ...ent and Maintenance Manual 15 Graph 1 UNIT S PRESSURE DROP AS A FUNCTION OF INLET WATER TEMPERATURE 10 11 12 13 14 15 16 17 18 19 11 5 12 12 5 13 13 5 14 PRESSURE DROP FEET OF HEAD WATER FLOW GALLONS PER MINUTE 46 F 52 F 55 F 63 F ...

Page 16: ...a of free natural air circulation and does not require particular weather protection In no case must the unit be installed in a room No overhead obstructions should block the outlet of air from the unit top The unit should not be installed so that the fan discharge is in close proximity to the fresh air intakes of a building or in such a manner that hot or contaminated air from flues dryer vents c...

Page 17: ... gas meters regulators and relief equipment and in no case located above or below these items unless a 4 feet horizontal distance is maintained The unit can be installed at ground level on a platform or on the roof if it can withstand the weight The noise generated by the condenser fan during unit operation is not excessive However avoid locating the unit in an area adjacent to bedrooms or neighbo...

Page 18: ... flues outlets and other such vents It is important that the unit be located so that hot or contaminated air IS NOT drawn into the air intakes of the unit see Figure 7 Figure 7 CLEARANCES FROM VENT OUTLETS CHIMNEY FLUES AND AIR INTAKE OPENINGS GROUND INSTALLATION Ground level units should be supported on a LEVEL concrete pad with a minimum thickness of 4 and slightly larger than the unit base see ...

Page 19: ...CHILLER AND ROOF Installation on roofs directly above sleeping quarters should be avoided if possible If not possible special consideration must be given to the transmission characteristics of the building structure The use of vibration isolators under the equipment acoustically insulated bases and approved flexible connections vibration dampening pipefittings between the unit and the system pipin...

Page 20: ...etween turning the burner off and complete shutdown of the appliance Piping diameters of tubes etc must be sized appropriately in order to ensure the correct chilled water flow necessary for the proper operation of the unit The water lines should also be sized so the maximum velocity of the water glycol solution in the lines does not exceed 6 feet per second to avoid excessive noise When rigid pip...

Page 21: ... units of measure for the pressure Feet of Head and Pounds per Square Inch psi These two units of measure are related by equation 1 Equation 1 1psi 2 31 Feet of Head To determine the pressure drop using the equivalent length method follow these steps 1 Add up all straight runs of pipe both supply and return 2 Count all types of fittings by pipe size and pressure drop 3 Find corresponding Equivalen...

Page 22: ...ing Nominal Pipe Size in Inches 1 1 1 2 2 3 Standard 90 Elbow 2 5 3 0 4 0 5 0 7 0 8 0 10 0 Standard 45 Elbow 1 5 1 8 2 4 3 0 4 0 5 0 6 0 Standard 180 Elbow 3 2 4 1 5 6 6 3 8 2 10 12 Long Radius 90 Elbow 1 4 1 7 2 3 2 6 3 3 4 1 5 0 Miter 90 Elbow 4 0 5 0 7 0 8 0 10 0 12 0 15 0 Miter 45 Elbow 0 9 1 0 1 5 1 8 2 3 2 8 3 2 Sudden Enlargement 1 5 2 0 3 0 3 6 4 8 6 1 8 0 Sudden Contraction 1 0 1 2 1 8 2 ...

Page 23: ...9 1 5 58 1 2 12 10 1 6 70 1 2 63 12 1 3 38 1 3 77 14 1 4 48 1 1 50 16 1 5 65 1 1 70 18 1 7 02 1 2 00 20 1 8 43 1 2 43 22 1 4 52 1 2 85 24 1 5 30 1 3 35 26 1 6 10 1 4 00 28 1 6 97 1 2 00 30 1 7 58 1 2 43 32 1 8 92 1 2 70 34 2 2 30 1 3 08 36 2 2 55 1 3 40 38 2 2 80 1 3 70 40 2 3 36 1 4 13 42 2 3 34 1 4 40 44 2 3 64 1 4 90 46 2 3 93 1 5 37 48 2 4 27 2 1 70 50 2 5 01 2 1 83 60 2 6 95 2 2 57 70 2 9 16 ...

Page 24: ...tion Feet of head from piping Feet of head from chiller Feet of head from coils Feet of head from fittings Let s do them in order You already know that there is 75 of PVC pipe for the supply line This number needs to be doubled to include the return piping as well You have 150 of 1 PVC pipe with a friction loss of 3 77 feet of head per 100 of pipe Using Equation 2 you get 150 x 3 77 5 7 feet of he...

Page 25: ...ng will be copper This example will focus on an application that has more than one air handler or fan coil The valves have been left out but tees and elbow will be counted Solution You can determine the GPM of the system by adding the coil GPMs together Next you will need to find pipe sizes and friction losses from Table 4 Starting at Coil 3 12 GPM 1 Copper pipe with 3 38 feet of head per 100 fric...

Page 26: ...t a total of 36 feet of head for the system 4 3 SIZING EXPANSION TANK An expansion tank is required with the new OWC 5 Chiller unit The expansion tank should be installed at the suction side of the system pump A diaphragm type expansion tank is recommended tank should be ASME certified for sizes above 30 gallons and should be sized specifically for each job based on its characteristics NOTE The fo...

Page 27: ... 1 0 092 0 105 2 0 161 0 172 2 0 250 0 250 3 0 357 0 385 4 0 625 0 667 5 1 000 1 000 6 1 400 1 500 8 2 430 2 630 10 3 780 4 200 12 5 400 5 900 Table 5 Pipe Sizing Major System Components Approximate Volume Equipment Size Gallons 1 67 tons 0 8 A Coils 3 tons 1 0 4 tons 1 5 5 tons 2 0 3 tons 1 0 Duct Coils 4 tons 1 5 5 tons 2 0 1 67 tons 1 0 Fan Coil Units 3 tons 1 0 4 tons 1 5 5 tons 2 0 Table 6 Wa...

Page 28: ...0 F 0 04340 0 04330 0 04280 0 04190 0 04080 0 03930 0 03760 230 F 0 04760 0 04750 0 04710 0 04610 0 04500 0 04360 0 04190 240 F 0 05220 0 05210 0 05710 0 05070 0 04960 0 04820 0 04650 Table 7 Net Expansion Factor Note For 50 50 Ethylene Glycol multiply Expansion Factor by 2 For 50 50 Propylene Glycol multiply Expansion Factor by 3 Maximum Operating Minimum Operating Pressure PSIG Pressure 5 10 12 ...

Page 29: ...ressure to the chiller is 5 W C and the maximum is 14 W C For Propane Gas the minimum inlet gas pressure to the chiller is 11 W C and the maximum is 14 W C For size of gas connection to the unit see Figure 12 Gas supply pressure higher than stated above could damage the gas valve resulting in a fire hazard Vertical gas piping must be trapped and a means provided to drain condensate that may accumu...

Page 30: ...s in excess of 1 2 psig The chiller must be isolated from the gas supply piping system by closing its individual shut off valve during any pressure testing of the gas piping system at test pressures equal to or less than 1 2 psig Figure 13 TYPICAL GAS CONNECTION Figure 14 TYPICAL AC CONNECTIONS APPROVED UNION SEDIMENT TRAP APPROVED GAS SHUT OFF VALVE TO UNIT FROM GAS SUPPLY 3 8 Nom ID W Flare Type...

Page 31: ...0 volt supply line within sight of and not over 50 feet from the unit see Figure 16 An error in wiring installation could cause problems during the unit s operation and could damage the electrical components of the appliance The unit must be electrically grounded in accordance with national requirements The power supply line must not be used to turn the unit ON or OFF The dedicated control switch ...

Page 32: ...mp operates while the control switch is closed The N O Contact will open 215 seconds after the control switch opens Wiring a 230 volt water pump with a current requirement less than 4 amperes see Figure 18 Wiring a 230 volt water pump with a current requirement greater than 4 amperes see Figure 16 Wiring a 115 volt water pump with a current requirement less than 4 amperes see Figure 17 Figure 16 W...

Page 33: ...ditional equipment having a transformer or damage to the S 60 board will occur THERMOSTAT WIRING Special consideration should be given to the control wiring when the chiller is used in an air conditioning application For details on wiring additional components ALWAYS consult the component manufacturer s wiring instructions The following diagrams give general layouts that can be used Single thermos...

Page 34: ...rol on a furnace This system does not offer constant fan operation on heating unless the power is ON to the chiller and the fan switch on the cooling thermostat is in the ON position FURNACE MINIMUM 20VA TRANSFORMER FAN RELAY FAN DELAY FAN MOTOR DUAL GAS VALVE PILOT SWITCH HIGH LIMIT SWITCH G Y R W THERMOSTAT R Y O ELECTRONIC CONTROL BOARD S 50 ISOLATION RELAY 18010 116 TO FUSED DISCONNECT ...

Page 35: ...urer s instructions for an exact wiring schematic Figure 21 SINGLE THERMOSTAT USED FOR COOLING ON A FAN COIL UNIT FURNACE MINIMUM 20VA TRANSFORMER FAN RELAY FAN DELAY FAN MOTOR DUAL GAS VALVE PILOT SWITCH HIGH LIMIT SWITCH G Y R COOLING THERMOSTAT R Y O ELECTRONIC CONTROL BOARD S 50 TO FUSED DISCONNECT HEATING THERMOSTAT R Y O R Y G THERMOSTAT ELECTRONIC CONTROL BOARD S 50 FAN RELAY FAN COIL UNIT ...

Page 36: ...ct sunlight through a window or glass door Electrical Appliances such as television radio or lamps The thermostat should be located so that it senses the average temperature of the conditioned space The thermostat should be mounted according to the manufacturer s instructions packaged with the thermostat THERMOSTATS USING A MERCURY BULB SWITCH MUST BE LEVEL The heating anticipator for a thermostat...

Page 37: ...IPMENT HAVING TRANSFORMER IS USED CIRCUIT BOARD ERROR CODES NOTES E01 M1 SAFE TY OPEN E02 NPH SAFE TY OPEN E03 THM 3 DEGREE C E04 TCN TA 11 DEGREE C FOR 60 SEC E05 TA 45 DEGREE C E06 TA 10 DEG REE C E07 TG 160 DEG REE C E08 TG 160 DEG REE C E09 GENERAL BURNER M ALFUNCTIO N E10 FL OPEN FOR 15 SEC E11 SRT CLOSED FOR 15 SEC E12 FLAME CO NTROL UNI T BLO CKE D E16 THM E17 THR E18 TCN E19 TA E20 TG AUTO...

Page 38: ...nstallations in contradiction to the directions instructions of the manufacturer can or may result in incorrect unit operation 6 1 DETERMINING VOLUMES OF HYDRONIC SYSTEM AND ANTIFREEZE To ensure correct operation of the unit and to avoid the water freezing add 10 by volume of inhibited mono ethylene glycol antifreeze to the circulation water Add more mono ethylene glycol as needed for the minimum ...

Page 39: ...and glycol and a water pump to drive the mixture into the hydronic system is required 1 Open air bleed s located at the highest point in the system 2 Connect the hose between the charging pump and Valve A Connect a hose to Valve C and place the other end of this hose into the mixing container see Figure 23 3 Mix the desired concentration and volume of water antifreeze in the container If the conta...

Page 40: ...l the highest point in the hydronic system has a pressure of at least 4 psig If the unit is located at the highest point in the system then pressure at the high point of system should be least 10 psig 18 Close Valve A and shut down both pumps 19 Disconnect the charging pump and the mixing container 20 The hydronic system is now charged One way to determine the pressure at the high point of the sys...

Page 41: ...t it is necessary to check and adjust if necessary the gas input to the burner Using the table below locate the proper manifold pressure according to the local gas heating value BTU content per cubic foot and specific gravity This table is based on the correct natural gas input for the model by manifold pressure in inches of water column in WC BTU CONTENT SPECIFIC GRAVITY OF NATURAL GAS PER CU FT ...

Page 42: ...VE 6 4 USED OIL BURNER ADJUSTMENTS 1 IMPORTANT Prior to starting the unit pre fill the filter and fuel line with oil to assist priming procedure Oil pump motor turns at low RPM s and would take significant time to complete priming process if not pre filled 2 Making sure the thermostat is turned off apply power to the Chiller unit Switch burner main power switch to ON position After allowing the oi...

Page 43: ...default outlet chilled water temperature set point is 42 F When power is first applied to the unit CAP will appear on the display After few seconds H60 will appear When the H60 disappears the outlet chilled water temperature set point displays for the next 15 seconds After the set point disappears the display shows the actual temperature of the inlet water and T between inlet and outlet water temp...

Page 44: ...To restart the unit reset the red button on the oil primary Oil Pre Heater Block Pre heats the oil and air before entering combustion chamber Photo Eye Senses flame in combustion chamber and signals oil primary when no flame is present Igniter Springs Transfers the high voltage from the igniter transformer to the electrodes when door is closed Air Pressure Gauge Displays air pressure supplied by o...

Page 45: ...ressures when different viscosities of oils are used The oil pressure gauge is an indicator of where the PSI reading will be when that oil viscosity is being burned The oil gauge is used for servicing diagnostics assistance Power Indicator Indicates when power is present at the burner Run Indicator Indicates that the burner is ready for operation after the initial pre heat time of approx 5 minutes...

Page 46: ...il Burner Back View Opened Figure 27 Oil Burner Front View Flame Cone Oil Pre Heater Block Photo Eye Flame Sensor Transformer Igniter Springs Air Muffler Filter Pre Heater Control Circuit Board Electrical Terminal Block Oil Valve Flame Cone Nozzle Electrodes Burner Motor ...

Page 47: ...il Shut off Valve Eliminates start delays due to possible drain back Spin On Filter Oil Primer Switch Adjustable Motor Speed Initial set up only Once set no adjustment needed thereafter Oil Flow Control Supply Pump has the ability to control flame even when various viscosities are used furnace or stove oil to 90 weight straight flame remains stable Inline Breaker ...

Page 48: ...el Priming procedure Check condition of belts Check condenser fan height Before any type of service is performed ALWAYS shut off the power supply at the main switch CLEANING THE CONDENSER ABSORBER COILS It is recommended to clean the condenser absorber coils regularly since the unit s cooling capacity can be greatly reduced by dirt on the coils see Figure 30 The user installer or service technicia...

Page 49: ... screws holding burner and insulation retaining straps Note Wear a dust mask 3M 8710 or equal NOISH MSHA TC 21C mask during burner removal cleaning and assembly operations 5 Pry bottom of burner tube out to clear bottom of generator housing Pull burner down and out to remove from generator housing Note Be careful not to distort or damage the burner tube or the igniter and sensor assemblies in the ...

Page 50: ...Wear a dust mask 3M 8710 or equal NOISH MSHA TC 21C mask during burner and generator housing removal cleaning and reassemble operations 11 Pry bottom of burner tube out to clear bottom of generator housing Pull burner down and out to remove from front generator housing see Figure 31 Note Be careful not to distort or damage the burner tube or the igniter and sensor assemblies in the generator housi...

Page 51: ...at may be obstructing the opening see Figure 31 6 Look down the air intake chute for combustion air and clear any debris that may be obstructing the opening 7 Reinstall top panel 8 Reinstall front door 9 Turn on gas and electric supply to the unit 10 Start unit to check for correct operation It is recommended that at least once a year a qualified service technician perform routine maintenance on t...

Page 52: ...plug Do not over tighten 7 Remove the oil fill plug No 1 in Figure 32 using a 6mm hex key wrench 8 Refill with 0 6 quarts of Servel oil or approved equivalent Let any excess oil drain from fill plug opening 9 Replace the oil fill plug Do not over tighten 10 Turn on gas and electrical supply to unit and check for correct hydraulic pump operation Figure 32 RIGHT SIDE OF THE HYDRAULIC PUMP PRIMING PR...

Page 53: ... OIL LEVEL procedure 13 Clean the basepan and hydraulic pump of any excess oil 14 Turn on gas and electrical supply to unit and check for correct hydraulic pump operation Figure 33 LOWER PULLEY AT THE 6 O CLOCK POSITION BDC CHECK CONDITION OF BELTS When checking condition of belts and pulley shut off power to the unit Check condition of belts for any of the following 1 Age cracking 2 Wearing of te...

Page 54: ...MENTS Waste Oil Burner electrodes are adjusted at time of manufacturing However they should be checked periodically and at time of installation to be sure they are set as noted in Figure 35 Nozzle position in relation to flame cone burner tube is critical for low maintenance operation Periodically check position as per Figure 35 CAUTION TURN OFF MAIN ELECTRICAL POWER BEFORE CHECKING OR ADJUSTING E...

Page 55: ...re 36 Pump Strainer Figure 37 Oil Filter New Style Spin On Filter and Old Style Pancake Filter Suntec Fuel Pump Remove 4 bolts for access to strainer CAUTION must be careful not to destroy the gasket during removal of the housing Filter Housing Filter Housing Bolt Nut Washer Stainless Filter Screen Suntec Strainer Filter Suntec Gasket Pancake Filter With Housing Pancake Filter Spin On Filter With ...

Page 56: ...n data parameters values etc LEGEND A 4 digits DISPLAY for visualizing operational and unit codes B REGULATING KNOB Encoder for scrolling selection of data Figure 38 ELECTRONIC CONTROL BOARD DETAIL Rotating and pressing the REGULATING KNOB particular B allows the scrolling and selection of the information on the display Through the regulating knob and Display operation management and control take ...

Page 57: ... to select the letter E by pressing the encoder To enter in menu and visualize menu entries it s necessary to stop on the desired menu and press the encoder on the display the first menu entry of the same menu will be visualized By rotating the encoder all the other menu entries of the same menu will be visualized on the display To exit and return to the precedent level default visualization it is...

Page 58: ...cted by the unit The code will be visualized on the display of the electronic control board MENU 3 4 5 e 6 are Adjustment Menu to adjust the contained information Menu 3 is relative to the end user who can eventually if allowed modify the value of parameters an example are cold water set point and the water temperature difference setup MENU 4 5 e 6 are only to be managed by Technical Assistance Au...

Page 59: ...3 F RESET METHOD Reset occurs automatically when the condition that generated the code ceases with hysteresis of 14 4 T 458 6 F E 2 EXHAUST FUMES THERMOSTAT MANUAL RESET CODE GENERATED BY U2 code active for 1 hour or U2 code generated 3 times in 2 hours of operation RESET METHOD Reset may be performed through the board via menu 2 menu item 1 If Machine Code U2 and or E 2 occur again contact ROBUR ...

Page 60: ...FLAME CONTROL UNIT ERROR CODE GENERATED BY E 12 code on ACF and condenser inlet temperature increasing by over 18 within 1 hour RESET METHOD Carry out appropriate checks Reset may be performed through the board via menu 2 menu item 1 If the reset operation is unsuccessful contact ROBUR authorised Technical Assistance Centre U9 BURNER MALFUNCTION CODE GENERATED BY Low temperature detected by conden...

Page 61: ...d through the board via menu 2 menu item 0 If the reset operation is unsuccessful contact ROBUR authorised Technical Assistance Centre E 17 COLD INLET WATER TEMPERATURE SENSOR DEFECTIVE CODE GENERATED BY Fault interruption or short circuit on cold inlet water temperature sensor RESET METHOD Reset may be performed through the board via menu 2 menu item 1 If the reset operation is unsuccessful conta...

Page 62: ...2 INVALID BANK 1 DATA INVALID BANK 2 DATA CODE GENERATED BY Invalid Bank 1 data Invalid Bank 2 data RESET METHOD Reset occurs automatically 5 seconds after the Machine Code is generated E 81 E 82 INVALID BANK 1 DATA INVALID BANK 2 DATA CODE GENERATED BY Invalid Bank 1 data Invalid Bank 2 data RESET METHOD Enter and complete BANK 1 and BANK 2 data via the appropriate menu contact authorised ROBUR T...

Page 63: ...ual 63 CODE GENERATED BY Interruption or short circuit of ambient temperature sensor RESET METHOD Reset may be performed through the board via menu 2 menu item 1 If the reset operation is unsuccessful contact ROBUR authorised Technical Assistance Centre ...

Page 64: ...rom gas valve by removing the 4 screws from the valve flange use 9 64 hex key wrench Put the o ring in a safe place to be reused with the new nozzle 5 5 Attach the new gas nozzle to the gas valve using the 4 screws to secure valve flange be sure to put the o ring in the proper site 6 6 Tighten the ring nut and reattach wires to the valve 7 7 Turn on the gas and electrical supply 8 8 Adjust the gas...

Page 65: ... designed temperature differential between the external ambient and the condenser outlet If this maximum allowable temperature differential is not maintained a fault code will appear see Page 59 Fault Codes If the control switch is opened the S 60 board will de energize the ignition control box and begin cycle down The hydraulic pump condenser fan and water pump if controlled by the unit will cont...

Page 66: ...ergized If the air pressure switch contacts close after the premixer blower starts normal operation a pre purge delay begins and the ignition sequence continues Next the ignition control box energizes an ignition transformer that generates a high intensity spark at the igniter to ignite the gas air mixture see Figure 41 Simultaneously the gas valve is energized allowing the flow of gas to the burn...

Page 67: ...Figure 41 IGNITION TRANSFORMER IGNITER ASSEMBLY AND FLAME SENSOR LEFT SIDE OF COMBUSTION CHAMBER 1 2 3 4 6 1 2 3 4 5 5 6 IGNITION TRANSFORMER IGNITION CABLES FLAME SENSOR ANTI SPARK INSULATORS IGNITER IGNITER GASKET NOTE SOME DETAIL HAS BEEN REMOVED FOR CLARITY ...

Page 68: ...ecifications 3 Installation not in accordance with instructions 4 Has not been properly maintained operated or has been misused 5 Wiring not in accordance with diagram furnished with chiller 6 Chiller is operated in the presence of chlorinated vapors Warranty is limited to the original purchaser The above warranty is in lieu of all other warranties expressed or implied Enviro Heat does not authori...

Page 69: ...Installation Start Up Adjustment and Maintenance Manual 69 ...

Page 70: ...____________________ Customer Name_____________________________________________________________________ Address____________________________________________________________________________ City _________________________ State ________________ Zip Code ________________________ Dealer ____________________________________________________________________________ Address ________________________________...

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