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1704VRC3-AMEN, p 28/35

FAULT

FINDING



Fault

finding

may

only

carried

out

appropriately

qualified

persons

9.1

Main

fault

finding

chart

‐

Lock

‐

out

indicator

light

"OFF",

but

air

heater

will

not

operate

yes

Is there continuity between

terminals 9 &10

Check electronic

ignition control

Is there a restriction in the

flue pipe or inlet grill

Is the wheel dirty

Determine what caused the

limit to trip

Place into normal operation

Check the mains

Check the time/tempeature

control

Is there continuity between

9 & 10 ?

Is there 230V between

11 & 12 ?

Is power venting operating?

Reset limit control

Check venter motor

Replace pressure switch

Is the thermostat above

room temperature and if

used is the time

clock"ON"

Set thermostat above room

temperature & if used make

certain the time clock is ON

Does the power venter

operate?

Is there 230V between

L&N?

Is there 230V between

1 & N ?

Check pressure switch

Connect or replace tubing

Correct fault

Is the pressure tubing
connected & in sound

condition?

Clean the venter wheel

Содержание VRC-3 100-3

Страница 1: ...perty damage injury or death All work must be carried out by appropriately qualified persons The manufacturer does not take any responsibility in the event of non observance of the regulations concerning the connection of the apparatus causing a dangerous operation of the apparatus possibly resulting in damage to the apparatus and or environment in which the unit is installed Please read this docu...

Страница 2: ...urner Injectors 8 3 Ignition System 8 4 Operating Gas Valve 8 5 Limit Controls 8 6 Combustion Air Pressure Switch 8 7 Combustion Air Fan 9 0 FAULT FINDING 10 0 PARTS LIST 11 0 GAS CONVERSION 12 0 USERS INSTRUCTIONS 13 0 HEALTH SAFETY STATEMENT HAZARD INTENSITY LEVELS DANGER Failure to comply will result in severe personal injury or death and or property damage WARNING Failure to comply could resul...

Страница 3: ...NICAL DATA 2 1 Specifications Table 1 20 30 45 60 75 100 Gas category Comb Air Flue Type B 1 Comb Air Flue Type C 1 Connection colars mm 100 100 130 130 130 130 Heat inputs Hs kW 26 42 31 63 54 38 73 25 87 85 114 87 Heat inputs Hi kW 23 80 28 50 49 00 66 00 79 15 103 50 Heat output kW 21 82 25 99 44 64 60 92 73 13 94 50 Thermal efficiency 91 70 91 20 91 10 92 30 92 39 91 30 Gas consumption G20 m3 ...

Страница 4: ...0 12 mm 1 15 1 15 1 15 1 45 1 45 1 50 marking 115 115 115 145 145 150 Butane 28 10 28 10 28 14 27 90 27 75 26 96 Propane 35 80 35 80 35 90 35 60 35 40 34 40 Injector size Burner pressure mbar 1 2 2 Burner pressure injector size Table 2A Injector size and burner pressure G20 natural gas Inlet pressure 20 0 mbar Table 2B Injector size and burner pressure G30 G31 butane propane Inlet pressures G30 28...

Страница 5: ...1704VRC3 AMEN p 5 35 VRC 30 3 VRC 45 3 ...

Страница 6: ...1704VRC3 AMEN p 6 35 VRC 60 3 VRC 75 3 ...

Страница 7: ...1704VRC3 AMEN p 7 35 2 4 Blower options 2 4 1 Mixing cabinet Bottom exit Rear exit closed open open closed half half Damper position VRC 100 3 VRC 20 3 with mix box ...

Страница 8: ...1704VRC3 AMEN p 8 35 VRC 30 3 with mix box VRC 45 3 with mix box ...

Страница 9: ...1704VRC3 AMEN p 9 35 VRC 60 3 with mix box VRC 75 3 with mix box ...

Страница 10: ...1704VRC3 AMEN p 10 35 2 4 2 Mixing cabinet and filters VRC 100 3 with mix box VRC 20 3 with mix box and filters ...

Страница 11: ...1704VRC3 AMEN p 11 35 VRC 30 3 with mix box and filters VRC 45 3 with mix box and filters ...

Страница 12: ...1704VRC3 AMEN p 12 35 VRC 60 3 with mix box and filters VRC 75 3 with mix box and filters ...

Страница 13: ...4 3 Free blowing Free blowing Dimensions mm LCSC Restriction part no A B C 20 30 1002436 58 70 240 45 1002437 154 154 320 60 1002438 130 154 320 75 1002439 130 154 396 100 1002440 166 178 396 VRC 100 3 with mix box and filters ...

Страница 14: ...1704VRC3 AMEN p 14 35 2 5 Dimensions STANDARD UNIT ...

Страница 15: ...1704VRC3 AMEN p 15 35 UNIT WITH MIXING CABINET option 526 ...

Страница 16: ...r directly onto the occupants Partitions columns counters storage racking etc should be taken into account when choosing the location so that an unobstructed path for the air circulation can be maintained Where air heaters are located in the centre of the space to be heated the air should be discharged toward outside walls In large areas they should be located to discharge air along outside walls ...

Страница 17: ...ain or gully The condensation drain from the flue must be constructed from non corrodible material not less than 20 mm diameter Copper or copper based alloys must not be used for condensation drains 3 3 2 Combustion air inlet pipe flue pipe for balanced flue installation Type C appliances Balanced flue air heaters are designed to be fitted with a combustion air inlet pipe that obtains outdoor air ...

Страница 18: ...Flue pipe outlet collar 2 combustion air inlet opening 3 5 Air distribution Follow recommended practice for building air distribution The following notes are of particular importance Where free blowing air heaters are installed it must be taken into account that heated air is buoyant when it leaves the appliance therefore air patterns within the space being heated will modify the air throw pattern...

Страница 19: ...the installation requirements and the appliance before commencing installation 4 2 Suspending the air heater Before installing the appliance check to ensure that the supporting structure is adequate to carry the weight of the appliance and its ancillaries i e flue system Please check weights specified in table 1 When the heater is lifted for suspension support the bottom of the heater with plywood...

Страница 20: ...et socket size dia mm Figure 4 Figure 5 4 4 Gas connection Do not use the appliance gas supply to balance or support any part of the appliance Figure 6 Connection to a gas network may only be carried out by appropriately qualified persons The gas installation must comply with the rules in force using materials appropriate for gas installation To facilitate servicing the air heater must be fitted w...

Страница 21: ...side wall Avoid location in draughty areas or where it may be influenced by heat sources e g the sun process plant etc The thermostat or temperature sensor should be mounted on a vibration free surface and mounted about 1 5 metres above floor level Follow the thermostat manufacturers fitting instructions The thermostat must be suitable for switching 230 volts AIR DISTRIBUTION VRC 3 air heaters are...

Страница 22: ...riod has elapsed the integral ignitor and multi functional gas control operate The ignition spark ignites the gas creating the burner flame which is detected by a flame rod sensor If a burner flame is not detected the ignition controller proceeds to lock out and requires manually resetting Lock out is indicated by the red warning light on the air heater If the first reset is not successful wait 15...

Страница 23: ... control valve Connect a manometer to the test point see figure 7 Adjust the room thermostat to call for heat e g above room ambient temperature Observe the burner gas pressure on the manometer and compare to the required pressure If necessary adjust the burner gas pressure only for natural gas Remove the cover screw Turn the regulator screw anti clockwise to decrease pressure or clockwise to incr...

Страница 24: ...ter Ensure they are not placed where they may restrict the airflow from the heater or where they may catch fire from a hot surface Advise the person who is resuming responsibility that for continued safe operation the air heater should be serviced at least once a year SERVICING INSTRUCTIONS IMPORTANT Only appropriately qualified persons may carry out servicing and fault finding on this gas fired e...

Страница 25: ...to remove all external dirt Check the security of the fan on the motor Note Fan motors are lubricated for life and do not require lubricating 4 Remove any dirt and or grease that may have accumulated on the venter fan motor and its housing Note The combustion air fan motors are lubricated for life and do not require oiling or greasing 5 The gas multi functional control valve requires no field main...

Страница 26: ...operating instructions a copy of which is supplied with the air heater Fig 10b Fitting the ignitor 8 4 Multi functional gas control valve 1 Ensure gas supply to the air heater is turned OFF 2 After the air circulation fan has stopped switch OFF the electricity supply to the air heater 3 Mark for future identification and disconnect the wires connected to the valve 4 Disconnect the gas service unio...

Страница 27: ...ricity supply to the air heater 3 To gain access to the fan open the hinged controls compartment access door refer to figure 9 for location 4 Mark for future identification and disconnect the wires connecting the fan motor at the terminals on the main wiring junction 5 Remove combustion air fan and clean as necessary using a wire brush and solvent to remove sticky residues 6 Re assemble and check ...

Страница 28: ... dirty Determinewhat causedthe limit totrip Placeintonormal operation Check themains Check thetime tempeature control Is therecontinuitybetween 9 10 Is there230Vbetween 11 12 Is power ventingoperating Reset limit control Check venter motor Replacepressureswitch Isthethermostat above roomtemperatureandif usedisthetime clock ON Set thermostat aboveroom temperature if usedmake certainthetimeclock is ...

Страница 29: ... pressure During 5 trial for ignition is a spark visible Check electronic ignition control Check spark gap and ceramic check spark wire connector Is a spark visible Check flame signal Is it greater than 1 0 micro Amps Check flame signal using micro amp meter Is signal greater than 1 0 micro Amps During 5 trial for ignition is a flame visible in ths view port Correct polarity Does the inlet gas pre...

Страница 30: ...r distribution device been placed on the heater Is there excessive static pressure in the ductwork Did the motor overload trip Does the fan control energize the fan motor in less than 75 Adjust thermostat temp setting above ambient to energize fan gas solenoid valve Replace the motor Consult fan fault finding Does the limit trip before the fan is energized Place system in normal operation Consult ...

Страница 31: ...RC 45 3 01 27202 ERP blower VRC 60 3 01 27203 ERP blower VRC 75 3 01 27204 ERP blower VRC 100 3 01 27205 Settings PARTS LISTING GAS CONVERSION VRC 3 air heaters are designed to operate on natural or propane gas and will be supplied fitted for the gas type ordered In the event of site conversion to a different gas type it is necessary to convert the gas burner and burner controls Affix new data pla...

Страница 32: ...room thermostat calls for heat after about 30 sec 6 If the appliance does not light a check that the burner control does not require resetting An indicator light glows at the inside panel of the appliance and on a remote control if fitted Reset by pushing reset button inside the appliance or the remote control b check if thermal overheat control requires resetting 7 If the thermal overheat control...

Страница 33: ...ing and itching of the skin Fiber entry into the eyes will cause foreign body irritation Inhalation will cause irritation to the respiratory tract Precautions Wear protective gloves when handling People with a history of skin complaints may be susceptible to irritation Dust levels are only likely when the material is abraded In general normal handling and use for this purpose will not present disc...

Страница 34: ...irective Complies with the requirements of further directives namely GAD 2009 142 EC EMC 2004 108 EC LVD 2006 95 EC the following harmonized standards have been applied EN 1020 Non domestic gas fired forced convection air heaters for space heating not exceeding a net heat input of 300 kW incorporating a fan to assist transportation of combustion air and or combustion products The following notifie...

Страница 35: ...1384 489 250 www ambirad co uk Registered in England N 1390934 Registered office 10 Norwich Street London EC4A 18D Nortek Global HVAC is a registered trademark of the Nortek Global HVAC Limited Because of continuous product innovation Nortek Global HVAC reserves the right to change product specification without due notice ...

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