Nortek Reznor RHC21 8000 Installation, Commissioning & Servicing Instructions Download Page 15

Page: 15 / 52

Reznor, RHC21 8000 Installation EN May 2021 D301319 Issue 0 Page No 15 of 52

Example 2: Tmin = 13K (with minimum inlet temperature = -5°C)
model 8100-12 at low fire : 32.79kW results into :

Note: attention must be given to determine the maximum allowable airflow as a function of the
appropriate heat input.

4.6 Compartment dimensions

RHC21

8045-09

741

701

1244

1170

400

450

8060-12

950

910

1244

1700

400

450

8075-09

741

701

1844

1770

400

450

8100-12

950

910

1844

1770

400

450

8125M15

1272

1232

1844

1770

400

450

8150M18

1482

1442

1844

1770

400

450

8175M21

1691

1651

1844

1770

400

425

450

8200M24

1900

1860

1844

1770

400

425

450

Table 9 : Duct channel & controls compartment

32.79kW

7369

Summary of Contents for Reznor RHC21 8000

Page 1: ...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 dangero...

Page 2: ...rn the air heater OFF for short periods 28 5 13 To turn the air heater OFF for long periods 28 6 Servicing and maintenance 30 RHC21 8125M15 8150M18 8125M21 and 8200M24 component layout 30 RHC 8045 09...

Page 3: ......

Page 4: ...ld not be used for closing down the main burner as it switches off the fan prematurely and may damage the heat exchanger invalidating the warranty Important notice to installers Before installation ca...

Page 5: ...igned for use in hazardous atmospheres containing flammable vapours or combustible dust in atmospheres containing chlorinated or halogenated hydrocarbons or in appliances with airborne silicone substa...

Page 6: ...of installation or the country codes and gas categories as shown in this instruction manual it will be necessary to contact the distributor or manufacturer to provide the necessary information for the...

Page 7: ...scribed dimensions see table 8 The inlet temperature measured at the heat exchanger inlet is lower than the value stated on the chart see fig 5 dew point occurrence chart 1 3 Definitions Module The ga...

Page 8: ...3 m h 6 07 8 08 9 91 13 00 16 63 19 83 22 43 26 00 Gas Consumption Low Fire Hs G25 3 3 m h 1 82 2 43 2 66 4 01 4 67 5 32 6 67 8 56 Gas Service Connection Inches BSP 3 4 3 4 3 4 3 4 11 4 11 4 11 4 11 4...

Page 9: ...e G20 kg h 44 57 57 47 76 73 93 59 123 18 152 24 164 10 189 49 Mass Flow Rate Flue Gases High Fire G25 kg h 48 66 58 64 74 90 97 44 125 65 143 83 161 37 190 96 Mass Flow Rate Flue Gases High Fire G25...

Page 10: ...ion RHC21 8045 09 8060 12 8075 09 8100 12 8125M15 8150M18 8175M21 8200M24 A 741 950 741 950 1272 1482 1691 1900 A1 200 239 200 239 210 210 190 229 A2 541 711 541 711 1062 1272 1501 1671 B 400 400 400...

Page 11: ...12 8125M15 8150M18 8175M21 8200M24 F 350 350 350 350 350 350 350 350 F1 175 175 175 N A 175 175 175 N A G 25 25 25 25 25 25 25 25 H 1244 1244 1844 1844 1844 1844 1844 1844 J 432 401 432 385 370 363 3...

Page 12: ...ure 3 Front View Figure 3 1 RHC21 8045 09 8060 12 8075 15 8100 12 Figure 3 2 RHC21 8125M15 8150M18 8175M21 8200M24 RHC21 8045 09 8060 12 8075 09 8100 12 8125M15 8150M18 8175M21 8200M24 A 741 950 741 9...

Page 13: ...ry Check the shipping label and data plate to ensure the specification of gas and electrical supplies are compatible Read this document and become familiar with the installation requirements and the a...

Page 14: ...RO C 4000 R JL EURO C 4000 D JL CONDENSATION POINT 20 C 0 C 20 C 40K 20K 0K T T INLET AIR TEMPERATURE 30K CONDENSATION ZONE AT THE HEAT EXCHANGER 10K TEMPERATURE RISE OVER THE HEAT EXCHANGER Figure 5...

Page 15: ...ction of the appropriate heat input 4 6 Compartment dimensions RHC21 H H1 Y Y2 W W1 E 8045 09 741 701 1244 1170 400 400 450 8060 12 950 910 1244 1700 400 400 450 8075 09 741 701 1844 1770 400 400 450...

Page 16: ...on instructions for making joints including connections to the air heater for passing through a building element and for support requirements Gasket sealed single wall seamless aluminium or stainless...

Page 17: ...ould be insulated Where condensation is unavoidable provision must be made for the condensation to flow freely to a point to which it can be released i e a drain or gully The condensation drain from t...

Page 18: ...er to the specifications in section 2 of this document and to the data plate for details of supply pressures A competent and or qualified engineer is required to either install a new gas meter to the...

Page 19: ...appliance wiring diagram is supplied as a separate document A constant 230 volt 50 Hertz single phase with neutral link fused electricity supply is required All heaters and controls must be earthed A...

Page 20: ...llow instructions supplied with such panels Thermostat s and or temperature sensor s should be mounted on a vibration free surface Room thermostat s sensor s should be mounted about 1 5m above floor l...

Page 21: ...rect voltage The same result should be obtained by connecting the test leads between live and neutral Connect the voltmeter test leads to N and E A reading of 0V should be obtained If these tests do n...

Page 22: ...ecessary due to air still being present in the gas pipe Should the air heater still not light refer to Fault Finding section 8 The gas pressure must correspond to the data in table 3 on page 9 If the...

Page 23: ...tate clockwise to increase pressure CO2 Refit cap after adjustment 1 Offset adjustment 2 Inlet pressure measuring point 3 CO2 adjustment point throttle 4 Offset pressure measuring point Figure 8 Gas v...

Page 24: ...Fire Throttle G25 3 8 60 8 60 8 60 8 60 8 60 8 60 8 60 8 60 CO G25 3 ppm 50 ppm Throttle Turns from G20 Top Burner N A N A N A N A 2 0 out 2 0 out 2 25 out 5 5 in Throttle Turns from G20 Single Bottom...

Page 25: ...n the master burner following the commissioning procedure given overleaf Once the master burner has been commissioned the slave burner must be commissioned To commission the slave burner the master bu...

Page 26: ...ttle a set number of turns as indicated in the combustion data table If the chamber insulation has been replaced the organic binders will burn off during the first few minutes of operation This will r...

Page 27: ...the burner will run at the ignition speed for a few seconds to allow the flame to stabilise Following flame stabilisation the fan speed will increase to high fire to allow the heat exchanger to warm u...

Page 28: ...rn the air heater OFF for long periods Adjust the room thermostat to OFF or its lowest setting When the fan has stopped turn OFF the gas supply and then switch OFF the electricity supply to the air he...

Page 29: ...ior to activation of the ignition device Safety time The safety time is the delay between the gas valve being energised and the flame sensor checking for the presence of a flame This is a period of 4...

Page 30: ...1 x 8175 dependant on unit model 10 Tapitscrew 2 Gas train assembly 11 Washer 3 Limit stat bracket 12 Outlet collar AS D 130 VRA 4 Limit stat clips 13 Tube stainless steel 304 5 Limit control LC3 14...

Page 31: ...EN May 2021 D301319 Issue 0 Page No 31 of 52 Ref Description 19 U shape silicon gasket 20 Silicon gasket 21 Control box 1 bracket 22 Control box 2 bracket 23 Double control box assembly with controlle...

Page 32: ...bly 10 Limit control LC3 2 Tapitscrew 4 8 x 13 11 Clips 3 U shape silicon gasket 12 Limit stat bracket 4 Silicon gasket 13 Stainless steel 304 spigot 5 Gas train bracket 14 Stainless steel 304 90 elbo...

Page 33: ...servicing is recommended When any service is completed be sure that components are reassembled correctly to ensure that no unsafe condition exists Upon completion of the service carry out the commissi...

Page 34: ...unit RHC21 8045 09 8060 12 8075 09 8125M15 2 off 8150M18 2 off and 8175M21 1 off gas valve flange assembly 5 The gas valve can now be disconnected from the venturi by removing the fixing screws There...

Page 35: ...it gas valve in reverse order ensuring the o ring is fitted between the gas valve and venturi 8 Follow start up and commissioning procedures 7 2 Venturi cleaning and replacement 1 Clean the venturi in...

Page 36: ...es combustion fan 6 Refit remaining items in reverse order 7 Follow start up and commissioning procedure 7 3 Combustion fan cleaning and replacement 1 Follow steps 1 to 4 from gas valve replacement an...

Page 37: ...air drying air should not exceed 1 5 bar 8 Replace the burner gasket if necessary 9 Refit in reverse order 10 Follow start up and commissioning procedure 7 5 Burner chamber tube insulation check and...

Page 38: ...The first is located at the front of the chamber where the tubes are secured The second is located on the lower right side of the chamber where the probes are normally located It is recommended that b...

Page 39: ...ket to release the probe mounting bracket 4 Pull probe mounting bracket away from the burner chamber to extract the burner probes 5 The burner probe assembly can now be removed from the heater 6 Revie...

Page 40: ...1 Refit all parts in reverse order 12 Follow start up and commissioning procedure 7 7 Replacement of LC3 safety thermostats 1 Disconnect LC3 electrical connectors 2 Remove LC3 protective cap and lock...

Page 41: ...ontroller 3 Remove program key and refit into new controller 4 Fix new controller to electrical panel and reattach all wiring 5 Follow start up and commissioning procedure 7 9 Replacement of ignition...

Page 42: ...ct see technical data table 4 Integrity of supply circuit Does the lockout light illuminate Does the lockout light go off after pressing switch for 3 seconds CHECK 1 LED status light flash codes 2 LC3...

Page 43: ...at demand still present 2 Gas supply purged 3 Supply pressure 4 Throttle positioning see commissioning data table 5 Flame sensor probe corroded 6 Flame signal min 1 0 A 7 Flame sensor probe bent 8 Int...

Page 44: ...d 03 25327 01 All Lockout Reset Switch 60 61998 All Gas valve lead 1030864 All Gas Valve 03 25800 8045 09 8060 12 8125M15 6 Gas Valve 03 25801 8075 09 8125M15 9 8150M18 8175M21 9 Gas Valve 1030499 810...

Page 45: ...eater MUST NOT be controlled by switching the main electrical supply to it ON and OFF The ignition sequence will commence each time the external controls e g Time clock room thermostat etc call for he...

Page 46: ...urposes and the air supply to the heater must not be restricted in any way Combustible materials must not be stored adjacent to the heater If at any time a gas leak is suspected turn OFF the gas suppl...

Page 47: ...1 93 6 8075 09 75 8 21 8 0 177 0 022 0 001 82 8 88 7 0 0 0 0 52 97 3 85 3 91 9 8060 12 61 3 19 8 0 106 0 018 0 001 82 2 88 3 0 0 0 0 54 97 1 84 6 91 2 8045 09 45 7 14 7 0 111 0 017 0 001 81 6 87 8 0...

Page 48: ...1 85 4 93 5 8075 09 76 6 21 7 0 177 0 022 0 001 83 7 88 4 0 0 0 0 69 97 3 85 2 93 0 8060 12 61 3 19 7 0 106 0 018 0 001 82 1 88 1 0 0 0 0 68 97 1 84 4 91 2 8045 09 45 5 14 8 0 111 0 017 0 001 81 2 87...

Page 49: ...7 1 85 2 93 3 8075 09 76 0 21 7 0 177 0 022 0 001 83 1 88 4 0 0 0 0 70 97 3 85 1 92 2 8060 12 61 3 19 8 0 106 0 018 0 001 82 2 88 3 0 0 0 0 66 97 1 84 6 91 2 8045 09 45 8 14 8 0 111 0 017 0 001 81 7 8...

Page 50: ...e Address Site name Commissioning Engineer Name Gas Safe Reg No Company Name Commissioning Date Burner Fuel type Inlet Pressure mbar Working Pressure mbar Burner Pressure Low Fire mbar High Fire mbar...

Page 51: ...Reznor RHC21 8000 Installation EN May 2021 D301319 Issue 0 Page No 51 of 52 Notes...

Page 52: ...9707 reznorsales nortek com www reznor eu Nortek Global HVAC is a registered trademark of Nortek Global HVAC limited Because of the continuous product innovation Nortek Global HVAC reserves the right...

Search results

Summary of Contents for Reznor RHC21 8000

Reviews:

Related manuals for Reznor RHC21 8000

Brands by name

Popular brands

Nortek Reznor RHC21 8000, Installation, Commissioning & Servicing Instructions

Search results

Summary of Contents for Reznor RHC21 8000

Reviews:

Related manuals for Reznor RHC21 8000

Brands by name

Popular brands