Reznor Gas Fired Air Heaters Manual de Serviço

0310DF00GBEN GAS FIRED AIR HEATERS TYPE DFMA 5/.. - 10/.. - 18/.. & BC/.. Direct Gas fired flue-less appliances with automatic

10 If closure dampers are incorporated within the air circuit they must be electrically interfaced with the burner controls so as to prevent start-

11 ALL APPLIANCES 5.2 Check that the air supply and ventilation requirements will be met as outlined in section 6 of this document. 5.3 The DF

12 SECTION 7 GAS CONNECTION 7.1 Connection to a gas service may only be carried by suitably qualified persons. The gas installation must comply w

13 SECTION 9 COMMISSIONING,LIGHTING AND OPERATION COMMISSIONING 9.1 Normally Reznor Direct Fired air heaters do not require commissioning. F

14 In the event that the air flow duty is changed from the design rate when the appliance is commissioned it will be necessary to re-adjust the pla

15 9.8 BURNER MODULATION Most Reznor DFMA air heaters are fitted with modulating burner controls. This feature enables the burner to modulate at t

16 HIGH RATE ADJUSTMENT 9 Extreme situations: Low fire gas rate is controlled by the by-pass setting; High fire gas rate is controlled by the

17 Figure 9 : MR 212 Modulating Gas Pressure Regulator Legend: 1. High rate main burner adjustment 2. Low rate adjustment SECTION 10 MAINTENA

18 Figure 10 : TYPICAL DIRECT FIRED AIR HEATER BURNER CONTROLS M 611 MODULATION (heat input < 180kW) Legend : A. Inlet gas tap B. Main

19 Figure 12. Ignition burner detail Figure 13. Burner Profile Adjustment SECTION 11 FAULT FINDING 11.1 Air he

0401DF00GBEN 2 2 INDEX Page 1. Principle of use and operation...

20 SECTION 12 SPARE PARTS LISTING ALWAYS QUOTE APPLIANCE MODEL & SERIAL NUMBER AND GAS TYPE FOR SPARE PARTS 12.1 Gas components DESCRIPTI

21 12.3 Option : Air filters DIMENSION PART NE TYPE QTY USED ON 405 X 510 X 25 (16" X 20" X 1") 60 61041 16x20 EU 4

22 13.7 Electrolytic Capacitor 1 Phase motors Two types are used by random selection: Recognition: 1.Plastic enclosure 2.Aluminium enclosure M

23 Reznor DFMA SERIES ONE OF THE NEW GENERATION OF CE MARKED GAS FIRED ENERGY EFFICIENT AIR HEATERS BEST USED WITH OUR OPTIONAL ELECT

24 ANNEX 1 Reznor Europe N.V. Manufacturers Inspection/Test report; Direct Gas Fired Air heaters Date: / / This appliance has been t

25 *Vmin/HS P1 cabinet ...mbar + P2 manifold ...mbar = Ptot ...mbar *Vlmin/LS P1 cabinet ...mbar + P2 manifold ...mbar =

26 Reznor Europe N.V. Installers Inspection/Test report; Direct Gas Fired Air heaters Date: / / (* = option) Order ref. : Fi

27 *Vmin/HS P1 cabinet ...mbar + P2 manifold ...mbar = Ptot ...mbar *Vlmin/LS P1 cabinet ...mbar + P2 manifold ...mbar =

3 SECTION 2 GENERAL IMPORTANT NOTICE: Reznor Direct Fired Air Heaters are constructed to meet unique specifications for which they are ordered.

4 to monitor the air quality within the heated space may be required. Refer to tables 1.2 and 5 for data of how to assess the criteria necessary to

5 Table 1.2 : RANGE RATING OF DFMA AIR HEATERS MODEL TYPE BURNER LENGTH Q = ft MAXIMUM HEAT INPUT kW @ GCV MINIMUM HEAT INPUT kW @ GCV 1 MIN

6 Figure 2 : DIMENSIONS MODEL DFMA - 5 SIDE ELEVATION STANDARD HAND CONTROLS SIDE PLAN VIEW END VIEW AIR OUTLET Figure 3 : DIMENSI

7 Figure 4 : DIMENSIONS MODEL DFMA - 18 SIDE ELEVATION STANDARD HAND CONTROLS SIDE PLAN VIEW END VIEW AIR OUTLET

8 L/Y Table 3. Maximum load ratings for 4 pole motors: Single phase - DFMA - 5 Motor rating kW 0,55 0,75 Phase ~ 1 1 Voltage V 230 2

9 4.4 Profile openings for burners must be designed to provide an airstream velocity across the burner of 15m/s. When calculating the area for the pr