Dettson Chinook C15-M-V Instructions D'installation Et Manuel Du Propriétaire page 17

6 ELECTRICAL CONNECTION
6.1 120V WIRING
Furnace must have a 120 V power supply properly
connected and grounded.
maintained for 120 V wiring.
furnace will NOT operate.
frequency, and phase correspond to that specified on
unit rating plate. Also, check to be sure that service
provided by utility is sufficient to handle load imposed
by this equipment. Use a separate fused branch
electrical circuit with a properly sized fuse or circuit
breaker for this furnace. A readily accessible means of
electrical disconnect must be located within sight of the
furnace.Refer to rating plate or Table 10.
6.2 24V WIRING
Make field 24 V connections at the 24 V terminal strip.
Connect terminal Y/Y2 for proper cooling operation. Use
AWG No. 18, color-coded, copper thermostat wire. For
wire lengths over 100 ft., use AWG No 16 wire.
6.3 THERMOSTAT
To know exactly which thermostat should be used with
your system (cooling, ERV/HRV), please refer to the table
11.
6.3.1 Non-communicating modulating,
one-stage or two-stage thermostat
NOTE: Do not use 24 volt control wire smaller than No.
18 AWG.
Wire all non-communicating thermostats to the 24V
connections on the integrated furnace control. See figure
14
NOTE: A larger wire gage may be required for longer
lengths of thermostat wire.
Operations with a modulating non-communicating or
communicating thermostat are fully modulating between
40% and 100% of furnace capacity.
is first determined by the thermostat and then sent to
the furnace. This is the optimum mode of operation
and will give the best temperature control with minimal
temperature variation from the desired set point.
Operation with a 2-stage thermostat will proceed as
follow : call on W1 will result in a 40% input, call on W2
will resulat in 60% input for 6 minutes followed by 100%
input until thermostat demand is satisfied.
Operation with a single stage thermostat will require
dispwitch configuration and will operate in three phase,
Proper polarity must be
If polarity is incorrect,
Verify that the voltage,
The firing rate
as describe in table 7 below. See table 8 for configuration
details.
Figure 13 – Wiring Diagram Modulating t-stat
Table 7 – OPERATION WITH SINGLE STAGE T-STAT
PHASE
PHASE 1
PHASE 2
PHASE 3
Table 8 – THERMOSTAT TYPE SELECTION
S4-2 S4-3
OFF OFF Modulating, communicating or 1-stage t-stat
ON OFF
OFF ON
ON ON
6.3.2 Thermostat input
These connections are used with any traditional 24 V
AC modulating non-communicating, thermostat specified
for this modulating furnace. W1, Y1, Y2, G, C and R
are the traditional thermostat inputs used in nearly all
HVAC equipment. Installation of the thermostat to these
connections is straight- forward and simple.
HUM STAT – This terminal is used to connect the
output of a humidistat to the furnace control to
control humidification and/or dehumidification. Optional
equipment is required for these features.
Table 9 – Dehumidification
S5-1
OFF No On Demand dehumidification
ON On demand dehum based on HUM STAT terminal
16
TIME INPUT
0-5 minutes 40%
5-12 minutes 60%
12 + 100%
DESCRIPTION
40% TEST MODE
100% TEST MODE
2-STAGE T-STAT
DESCRIPTION