BENSON RS Informations techniques

1 Gas fired room sealed unit heaters centrifugal TECHNICAL INFORMATION, ASSEMBLY INSTRUCTIONS, USE AND MAINTENANCE RS/UHC / UF RS/UHC-2 / 2U

10WIRING DIAGRAM Schematic layout: Heaters type 1-2-3 EFSEJ4J8IGN1PACOMCOMNA NCIONEA1J11J17J2J14VMTAJ16 J13J7RSTRMSEVG1-I°EVG1-II°RSTLBLLLFJ10J9

11 Heater type 2-3 up rated fan SEEF PACOMNAJ4J8J17J10J9LMJ12J18NCIGN1IONEA1J16J11J2J14J7J13RSTRTAVMMSNLJ15J1J6CNTF2J5F1II°SFI°RTFANSNDTREVG1-I°

12 Heater type 4 LFLLLBRSTNCIGN1IONEA1J16J11J2J14J7J13RSTRTAVMMSL3NL1L2IMTFJ15J1J6CNTF2J5F1II°SFI°RTFANSNDTREVG1-I°EVG1-II°SEEF PACOMNAJ4J8J17

13 Heaters type 5-6 LFLLLBRSTTRJ16IGN2 EF PAEA2SENACOMJ4J17J8ALIMENTAZIONE ELETTRICATRIFASE 400V 50Hz 3NNCIGN1EA1IONJ11J14J2J7VMRSTRTAL3NL1L2IM

14REMOTE CONTROL CONNECTIONS Connection to CP2A Key: B Blue M Magenta BK Black O Orange BN Brown P Purple G

15 OPERATION To switch ON the heater • Switch the fused isolator switch ON (supply customer) • Switch the heater ON/OFF selector to “ON” • Turn th

16HEATER INDICATOR LIGHTS If a fault should occur with the heater the lights situated at the right hand side of the heater will be illuminated indic

20DIMENSION AND WEIGHT Type 1 – 2 – 3 – 4 Type 1 2 3 4A [mm] 665 745 925 1170 B [mm] 745 745 745 793 C [mm] 435 515 695 940 D [mm] 563 563 555 510

2COMPLIANCE NOTICES The Benson RS/UHC range of warm air heaters detailed herewith are manufactured for Benson Heating within the parameters of ISO

20 Type – 5 – 6 Type 5 6A [mm]1720 1960 C [mm]1300 1540 H [mm]1640 1885 J [mm]1200 1440 ∅ [bsp] ¾ ¾ Nett weight [kg] 267 311

19INSTALLATION It is a requirement that only qualified and competent personnel may undertake installation commissioning and servicing of Heaters.

20*min. 700min. 700INSTALLATION CLEARANCES For the correct operation of heater and for maintenance purposes the following minimum clearances around

21EXAMPLES OF INSTALLATION Further examples INSTALLATION: • Internal installation • Mounted on wall brackets (1) • Ducted warm air outlet (2) •

22ACCESSORIES Available accessories: NO. DESCRIPTION TYPE 1 2 3 4 5 6 1 Conical duct connection z z z z z z2 Horizontal louvres z z z z

23GAS CONNECTION Conection of the heater to the gas supply, whetherNatural Gas or L P G , must be carried out in compliance with the installation l

24FLUE AND COMBUSTION OPTIONS Room sealed unit heaters are suitable for installation with the following flue configurations : B22 - C12 - C32 . Op

25 L1 MAX 500Ø100MIN. 400B22: Single pipe flue to outside wall or roof terminal. Combustion air from inside building

26Ø100MAX 500*L1MIN. 400C12: Horizontal flue installation twin pipe and concentric flue terminals. ✴100 mm type 1 – 2 – 3 150 mm

27C32 Concentric vertical roof terminal Ø150Ø100L1* ✴ 100 mmtype 1 – 2 – 3 150 mm type 4 – 5 – 6 INSTALLATION DISTANCES FOR FLUE PIPES:

3 GUARANTEE The heater is supplied with a 2 year warranty on all parts. In addition to this there is also a 10 year time related warranty on the co

28ELECTRICAL PANEL AND CIRCUIT BOARD Panel illustrated is fitted to type 5 and 6. 1. Lockout reset 2. Red lockout indication

29 The cover to the electrical panel can be removed by undoing the screws which secure it to the panel. A copy of the wiring diagram is affixed to th

30RETURN AIR CONNECTIONS The heater is supplied with 2 return air connecctions one at the rear and one underneath: a. Return air from direction

31INITIAL START UP VENTILATION • Switch on mains supply to the equipment • Set On/ Standby switch to ON Set the remote control panel switch to VEN

32GAS CONVERSION The heaters are supplied ready for use with (G20),Natural Gas as per the table below LPG Conversion kits are available from the man

33GAS PRESSURE SETTINGS To regulate the gas inlet pressure : • Connect a manometer to pressure test point (PM) • Ensure that gas supply pressure

34 Gas valve head pressure setting low fire Propane G31: When setting the gas pressure for propane low fire (first stage) contact SF should be open.

35FAN The driven variable pitch pulley drive and fixed fan pulley are factory pre set and are suitable for most applications. The fan speed can be a

36MAINTENANCE It is a requirement that only qualified personnel are allowed to carry out installation commissioning or servicing. Before commencing

37 CLEANING OF HEAT EXCHANGER Cleaning of the heat exchanger must be carried out by authorized personnel and is governed by specific regulations. As

4INDEX GENERAL Description of equipment page. 5 Identification “ 6 Description “ 7 Technical data “ 9 Wiring diagram

38FAULT FINDING If heater is not working firstly check the following: • Check electrical supply • Check gas pressure • Check gas pressure is a s

39 Explosive start up  Faulty ignition electrode Change ignition electrode  Incorrect electrode position  Reposition electrode correctly ove

40 Excessive air temperature due to poor air flow.  Check that the fan blades are clean. Check that the horizontal and (vertical if fitted) louvres

41 BENSON HEATING LUDLOW ROAD KNIGHTON POWYS LD7 ILP Tel 01547 528534 Fax 01547 520399 www

5 DESCRIPTION OF EQUIPMENT Heat exchanger • Stainless steel construction easily accessible for inspection and cleaning and maintenance operations.

6IDENTIFICATION If the TECHNICAL DATA is lost or damaged ask Benson Technical Department for duplicate . Check code and model is as data plate.

7 DESCRIPTION Type 1÷4 NOTE: Heaters type 1, 2, 3 have a single burner manifold. Heaters type 4 have two burner manifolds 1. Regulation the

8 Type 5 and 6: NOTE: Heaters type 5 are supplied with 2 opposing burner manifolds Heaters type 6 are supplied with 4 opposing burner ma

9 TECHNICAL DATA DESCRIPTION TYPE UNIT 12345 6 HEAT OUTPUT 23,0 30,5 41,7 58,6 76,6 94,3 KW 78.500 104.000 142.000 200.000 261.500 322.000 Bt