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5
2.2.2 Downflow Installation
When the furnace is installed in the downflow position on a
combustible floor, the clearances from combustibles must
be adhered to. The downflow base DFB-103 or
KLASB0901DET can be used to ensure these clearances.
Refer to Figure 3 and the installation instructions provided
with the base.
The burner must always be installed in the same manner,
regardless of the discharge position of the furnace. Refer
to Figure 3 for additional details.
The protection plate (B03789) must be installed on the
plastic cover of the Beckett NX burner to protect it from
vent.
Figure 3: Downflow installation
2.2.3 Horizontal
Installation
When the furnace is installed in the horizontal position,
either suspended or on a combustible floor with a choice of
right or left discharge, the clearances from combustible
material must be adhered to. If the unit is installed on a
combustible floor, the horizontal floor base HFB-101 or
KLASB0701DET can be used to ensure these clearances.
Refer to the instructions supplied with the base.
The burner must always be installed in the same manner,
regardless of the discharge position of the furnace. Refer
to Figure 4 for additional details.
Figure 4: Horizontal installation
2.3 ELECTRICAL
SYSTEM
CAUTION
The exterior of the unit must have an uninterrupted
ground to minimize the risk of bodily harm, if ever an
electrical problem develops. A green ground screw is
supplied with the control box for that purpose.
The appliance must be installed in accordance with the
current ANSI/NFPA 70 National Electrical Code, CSA
C22.1 Canadian Electrical Code Part 1 and/or local
codes.
The control system depends on the correct polarity of
the power supply. Connect “HOT” wire (H) and
“NEUTRAL” wire (N) as shown in Figures 10 and 11.
A separate line voltage supply should be used, with
fused disconnect switch or circuit breaker, between the
main power panel and the unit.
Filter 20 x 24
Only copper wire may be used for the 115V circuit on
this unit. If wires need to be changed, the replacements
must have the same temperature resistance as the
originals.
Burner position
2.4 INSTALLATION
OF
THE
THERMOSTAT
Downflow base is
required for
combustible floor
A thermostat must be installed to control the
temperature of the area to be heated. Follow the
instructions supplied with the thermostat. Also refer to
the wiring diagrams provided with the heating/air
conditioning unit. The connections must be made as
indicated on the following diagrams and the wiring
diagrams, Figures 10 and 11.
DNS-1227A
Figure 5: Thermostat wiring, heating and air
conditioning with 4 speed motor
Burner position
DNS-1227A
Filter 20 x 24
Horizontal floor base required
for combustible floor
Summary of Contents for OBM112 Series
Page 17: ...17 Figure 9 Furnace Dimensions ...
Page 18: ...18 Figure 10 Wiring Diagram 4 Speed Motor PSC ...
Page 19: ...19 Figure 11 Wiring Diagram Variable Speed Motor ECM ...
Page 20: ...Figure 12 Parts list with 4 speed motor PSC 20 B50091C ...
Page 22: ...22 Figure 13 Parts list with variable speed motor ECM B50092C ...
Page 24: ......
Page 42: ...Figure 9 Dimensions de la fournaise 18 ...
Page 43: ...19 Figure 10 Diagramme électrique avec moteur 4 vitesses PSC ...
Page 44: ...20 Figure 11 Diagramme électrique avec moteur vitesse variable ECM ...
Page 45: ...Figure 12 Liste de pièces avec moteur 4 vitesses PSC 21 B50091C 21 B50091C ...
Page 47: ...23 B50092C 23 B50092C Figure 13 Liste de pièces avec moteur vitesse variable ECM B50092C ...