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Table of contents
1.0 General Guidelines .............................................................................................................................................1
1.1 Inspection ........................................................................................................................................................ 1
1.2 Unpacking the Heater ...................................................................................................................................... 1
1.3 Unloading or Lifting the Heater ........................................................................................................................ 1
1.4 Gas Inlet Connection ....................................................................................................................................... 1
1.5 Electrical Power Supply ................................................................................................................................... 2
1.6 Installation of Duct Connection Pops .............................................................................................................. 2
1.7 Heater Positioning ........................................................................................................................................... 2
1.8 Installation of External Heaters........................................................................................................................ 2
1.9 Installation of Internal Heaters ......................................................................................................................... 2
1.10 Installation of Internal Heaters in a room, enclosure, residential garage or plant room ................................ 3
2.0 Classic BX3 Model Guidelines ...........................................................................................................................4
2.1 Heater Dimensions .......................................................................................................................................... 4
2.2 Service Clearances ......................................................................................................................................... 5
2.3 Flue Terminal Clearances ............................................................................................................................... 5
2.4 Orientation of Flue Terminal ............................................................................................................................ 6
2.5 Area to cut in the wall ...................................................................................................................................... 7
2.6 Installation of Flashing ..................................................................................................................................... 7
3.0 Classic 2PWN Model Guidelines .......................................................................................................................8
3.1 Heater Dimensions 2PWN15, 2PWN20 & 2PWN20 XA.................................................................................. 8
3.2 Heater Dimensions 2PWN26 & 2PWN26 XA .................................................................................................. 9
3.3 Service Clearances ......................................................................................................................................... 9
3.4 Splitting Classic 2PWN Heaters .................................................................................................................... 10
4.0 Classic 2PWN Model Guidelines .....................................................................................................................10
4.1 Heater Dimensions DF320 XA, UF320 XA & UP326 XA .............................................................................. 10
4.2 Installation alternatives for all DF3 & UF3 models......................................................................................... 11
4.3 Service Clearances ....................................................................................................................................... 11
4.4 Ventilation for Inside Heaters ........................................................................................................................ 11
5.0 Internal Flueing Instructions ............................................................................................................................12
6.0 Fan Speed Setting .............................................................................................................................................13
7.0 Ducting Information ..........................................................................................................................................13
8.0 Outlet Guide ......................................................................................................................................................14
9.0 Thermostat Installation ....................................................................................................................................15
9.1 Wiring the Manual or Programmable Thermostat (HEATING ONLY) ........................................................... 16
9.2 Wiring the Brivis Programmable Thermostat (ADD-ON & FAN ONLY) ......................................................... 17
10.0 Commissioning and Control Settings ...........................................................................................................18
10.1 Commissioning Instructions......................................................................................................................... 18
10.2 Start & Check Supply Pressure ................................................................................................................... 18
10.3 Start & Check Burner Pressure ................................................................................................................... 18
10.4 Setting the fan speed................................................................................................................................... 19
10.5 Final Checks ................................................................................................................................................ 19
11.0 Technical Specifications ................................................................................................................................20
