background image

                                                                              GUH RANGE PROPANE GAS FIRED UNIT HEATERS  

Page 39 of 41 

 9.0  Parts list 

 
 

Part Description 

GUH 100 

GUH 125 

GUH 165 

GUH 205 

GUH 250 

GUH 400 

Heat Exchanger Assy 

33-10-600 

33-10-601 33-10-602 33-10-603 33-10-664 33-10-603 

Draught Diverter Assy 

33-20-559 

33-20-606 33-20-607 33-20-611 33-20-665 33-20-611 

Gas Train Assembly Rhs 

33-20-263 

33-20-264 33-20-265 33-20-266 33-10-683 30-20-266 

Gas Train Assembly Lhs 

N/A 

N/A 

N/A 

N/A 

N/A 

33-10-712 

Pilot Installation Rhs 

33-30-330 

common 

common 

common 

33-30-330 

33-30-330 

Pilot Installation Lhs 

N/A 

N/A 

N/A 

N/A 

N/A 

33-10-713 

Control Box Assembly 

33-20-326 

common 

common 

common 

33-30-326 

33-10-716 

Flue Kit Assembly 

N/A 

N/A 

N/A 

N/A 

N/A 

33-21-155 

Control Box Lid 

33-20-865 

common 

common 

common 

33-20-865 

33-20-865 

F & L Stat L4064 8” 

28-60-023 

common 

common 

common 

28-60-023 

28-60-023 

Limit Thermostat (IMIT) 

N/A 

N/A 

N/A 

28-40-059 

28-40-059 

common 

Choke Plate Weld Assy 

33-30-240 

common 

common 

common 

33-30-240 

33-30-240 

Manifold Assy Rhs 

33-10-151 

33-10-152 33-10-153 33-10-154 33-10-682 33-10-154 

Manifold Assy Lhs 

N/A 

N/A 

N/A 

N/A 

N/A 

33-10-715 

Copper Washer 

91-00-052 

common 

common 

common 

91-00-052 

91-00-052 

Injector Prop Gas 

33-30-316 

common 

common 

common 

common 

common 

Gasket 33-30-295 

common 

common 

common 

33-30-295 

common 

Gas Valve(Honeywell)  

28-30-114 

common common common 

28-30-114 

28-30-114 

Pilot Burner c/w shear olive 

28-90-148 

common 

common 

common 

28-90-148 

common 

Pilot Injector 

28-90-165 

common 

common 

common 

28-90-165 

28-90-165 

Thermocouple 33-50-004 

common 

common 

common 

 

33-50-004 

35-50-004 

Ignition Electrode 

28-90-156 

common 

common 

common 

28-90-156 

common 

Ignition Lead 

28-02-172 

common 

common 

common 

28-02-172 

28-02-172 

Burner 33-00-124 

common 

common 

common 

33-00-124 

common 

Fuse Holder 

28-07-050 

common 

common 

common 

28-07-050 

28-07-050 

Fuse 10 x 38 Axial 

28-07-048 

common 

common 

28-07-048 

28-07-048 

28-07-049 

Fuse 10  x 38 Centrifugal 

28-07-048 

common

 

common

 

28-07-048 28-07-048  28-07-051 

Fan/Motor Guard Assy Axial 

28-09-039 28-09-040 28-09-036 28-09-042 28-09-042 28-09-042 

Fan/Motor Guard Assy Cent 

28-09-001 28-09-001 28-09-002 28-09-001 28-09-001 28-09-002 

Fan Plenum Axial 

33-10-540 

33-10-554 33-10-528 33-10-567 33-10-670 33-21-154 

Fan Plenum Cent 

33-00-167 

33-00-166 33-00-165 33-00-161 33-10-672 33-10-706 

*

Down Flow head 30 Deg 

33-10-427 33-10-428 33-10-429 33-10-430 33-10-678  33-10-430 

*

Down Flow Head 90 Deg 

33-20-504 33-20-505 33-20-506 33-20-507 33-10-675  33-20-507 

*

Vertical Louvre 

33-20-873 common  common  common 33-20-873 common 

*

CP2 Control Panel 

33-10-424 common  common  common 33-10-424 common 

*

Flue Ventor Assy 

33-20-752 33-20-753 33-20-754  common 33-20-754 

TBA 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Items marked are available as Optional Extras 

 
 
 

 
 

 
 
 

 

Summary of Contents for GUH100

Page 1: ...ANE GAS FIRED UNIT HEATERS Page 1 of 41 BENSON GUHA GUHC RANGE PROPANE GAS FIRED UNIT HEATER I N S T A L L A T I O N C O M M I S S I O N I N G S E R V I C I N G U S E R I N S T R U C T I O N S October...

Page 2: ...Installation 2 6 Electrical Installation 2 7 Electrical Panel 2 8 Time Switch 2 9 Room Thermostat 2 10 Fan and Limit Controls 2 11 Summer Ventilation Switch 2 12 Gas Installation 3 0 Commissioning 3...

Page 3: ...lectrical Installation Fig 17 18 Axial Centrifugal Fans Fig 19 27 Fault Diagnosis Flow Charts Fig 28 35 Electrical Drawings Fig 36 Main Dimensions Any reference made to Laws Standards Directives Codes...

Page 4: ...on Heating supports all new products being supplied to their customers with a comprehensive information pack this clearly defines mandatory instructions for the safe installation use and maintenance o...

Page 5: ...al Appliances General Requirements BS EN 55014 1993 Limits and methods of measurement of radio disturbance characteristics of electrical motor operated and thermal appliances for household and similar...

Page 6: ...with Centrifugal fans suitable for ducted applications Note Neither asbestos nor soft soldered joints are used in the construction or manufacture of the Benson range of GUH Heaters The materials selec...

Page 7: ...e and maintenance requirements Caution The heater must not be installed within an area where the conditions are unsuitable e g where the atmosphere is highly corrosive has a high degree of salinity or...

Page 8: ...as been subject to and affected by the ingress of water in any form h The heater is not operated at the rating s laid down in the manufacturers technical specifications i The heater has not been opera...

Page 9: ...whilst also providing good and safe working access The heater must be installed so that it is level supports for the heater must be sufficiently robust to withstand the weight of the heater and any an...

Page 10: ...d on top of the heater These must be of sufficient strength to safely carry the weight of the unit and ancillary equipment The straps may only drop vertically to eyebolts if used I E They must not be...

Page 11: ...her mechanical or natural Caution Systems of ventilation that employ mechanical extraction and natural inlet must not be used Furthermore where the air supply is by way of a mechanical means the inlet...

Page 12: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 12 of 41...

Page 13: ...hin the flue Unnecessary bends and restrictions should therefore be avoided Provision for the disconnection of the flue for servicing and inspection purposes must also be made and where appropriate be...

Page 14: ...be noted that claims made under warranty and attributed to the ingress of water may not be considered especially if an approved method of sealing has not been used or if the design of the flue has no...

Page 15: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 15 of 41...

Page 16: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 16 of 41...

Page 17: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 17 of 41...

Page 18: ...rical supply isolator should be mounted adjacent to the air heater in an easily accessible position to allow for servicing isolation or emergency shut off 2 7 Electrical panel Warning Ensure that the...

Page 19: ...arged air 2 10 Fan limit control Situated inside the right hand side panel Fan control white button The fan control switch features normally open 230V contacts and is wired to control the live supply...

Page 20: ...and multi heater installations and the effect they may have on other plant sharing the supply If it is necessary to fit a gas pressure booster the controls must include a low pressure cutoff switch wh...

Page 21: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 21 of 41...

Page 22: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 22 of 41...

Page 23: ...the gas and electrical supplies are turned off a Check that all panels and fasteners are secure and in place b Check that the heater is mounted safely c Check that the flue is sealed secured and adeq...

Page 24: ...undness k Continue to depress start button whilst operating igniter until pilot light is present l Hold in start button for at least one minute to establish pilot carefully release button confirming p...

Page 25: ...ware of the instructions within the manual It is strongly advised that the commissioning engineer runs through the lighting shutdown and general safe and efficient running of the heater before hand ov...

Page 26: ...louvres and fan assembly and carry out visual inspection of the heat exchanger using an inspection lamp and mirror Check seams and joints for perforations Check for severe corrosion and splits in the...

Page 27: ...in relief bush The four screws securing the fan and motor assembly to the rear of the plenum can be removed and the assembly complete with guard can then be removed from the heater Fan and Limit Therm...

Page 28: ...ght Pilot Burner Lights but flame does not become established Pilot Flame not being sensed by Thermocouple Check that the Pilot Flame Path is supplying Heat to the Thermocouple Pilot Flame is too smal...

Page 29: ...Supply Check Electrode Gap is Correct Purge System to Remove Air Check that Pilot Adjuster is set Correctly Check Gas taps are open and Gas is Present Check Electrode is not Cracked Check HT leads and...

Page 30: ...Second Stage Valve Fan will not Run Fan Control is Open Circuit Check that Fan will run when Main Gas is On Replace Faulty Fan Control Open Circuit to Fan Motor Check Wiring and Connections Fan runs...

Page 31: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 31 of 41 6 0 Wiring Diagrams...

Page 32: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 32 of 41...

Page 33: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 33 of 41...

Page 34: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 34 of 41...

Page 35: ...GUH RANGE PROPANE GAS FIRED UNIT HEATERS Page 35 of 41...

Page 36: ...n MJ m3 Hs is the gross calorific value of the gas at 1013 mbar and 15o C dry in MJ m3 Vf is the volume of dry products of combustion per unit volume of gas in m3 Vf is calculated from the volume of C...

Page 37: ...6120 2 888 AXIAL FAN THROW ft mtrs 50 15 5 55 17 1 65 20 2 65 20 2 70 21 7 65 20 2 CENTRIFUGAL FAN STATIC PRESSURE Pa Ins WG 100 0 4 125 0 5 163 0 65 125 0 5 125 0 5 150 0 6 SOUND LEVEL Dba 63 69 72...

Page 38: ...iances BS EN 55014 1993 Electromagnetic Compatibility BS EN 50165 1995 Safety of Electrical Equipment BS 5854 1980 Code of Practice Flues Flue Structures BS 6891 1988 Installation of pipework 28mm BS...

Page 39: ...mmon 33 30 295 common Gas Valve Honeywell 28 30 114 common common common 28 30 114 28 30 114 Pilot Burner c w shear olive 28 90 148 common common common 28 90 148 common Pilot Injector 28 90 165 commo...

Page 40: ...also lead to a hazardous situation being created where there is a risk of personal injury or death 10 1 Commissioning and hand over Warning As part of the commissioning programme the commissioning eng...

Page 41: ...es the piezo igniter as fitted to manual units giving a maximum pilot sequence of 15 seconds Flame supervision is via a flame sensor rod instead of the thermocouple as fitted to the manual units The s...

Reviews: