Electrical System; Installation Of The Thermostat; Figure 3: Downflow Installation; Figure 4: Horizontal Installation - Dettson AMP112SD Guide D'installation Et Manuel Du Propriétaire

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

DNS-1227A
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

DNS-1227A
Horizontal floor base required
for combustible floor
2.3
Filter 20 x 24
Burner position
Downflow base is
required for combustible
floor
Burner position
Filter 20 x 24
5

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.
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.
2.4 INSTALLATION OF THE
THERMOSTAT
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.
Figure 5: Thermostat wiring, heating and air
conditioning with 4 speed motor