7
ELECTRICAL CONNECTION
7.1
120V WIRING
Furnace must have a 120 V power supply properly
connected and grounded.
Proper polarity must be
maintained for 120 V wiring.
If polarity is incorrect,
furnace will NOT operate.
Verify that the voltage,
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 8.
7.2
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.
7.3
THERMOSTAT
To know exactly which thermostat should be used with
your system (cooling, ERV/HRV), please refer to the table
9.
7.3.1
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
16
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.
The firing rate
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,
as describe in table 6 below. See table 7 for configuration
details.
Figure 16 – Wiring Diagram Modulating t-stat
Table 6 – OPERATION WITH SINGLE STAGE T-STAT
PHASE
TIME
INPUT
PHASE 1
0-5 minutes
40%
PHASE 2
5-12 minutes
60%
PHASE 3
12 +
100%
Table 7 – THERMOSTAT TYPE SELECTION
S4-2
S4-3
DESCRIPTION
OFF
OFF
Modulating, communicating or 1-stage t-stat
ON
OFF
40% TEST MODE
OFF
ON
100% TEST MODE
ON
ON
2-STAGE T-STAT
7.3.2
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.
V/W2
– This terminal is used to connect the modulating
signal (V) from a non-communicating, fully modulating
thermostat specified for use with this furnace. It is used
to transmit the firing rate (determined by the thermostat)
to the furnace control.
NOTE: Do not apply 24 VAC to the V/W2 terminal (as
with a jumper to R for diagnostic purposes) with a
non-communicating, modulating thermostat.
16
Summary of Contents for CC15-M-V
Page 18: ...Figure 17 Wiring Diagram 18...
Page 23: ...Figure 25 Direct vent clearance 23...
Page 24: ...Figure 26 Other than Direct vent clearance 24...
Page 34: ...12 PART LIST Figure 27 Exploded view...
Page 35: ...Figure 28 Exploded view continued...
Page 36: ...Table 19 Part list Chinook Compact...
Page 37: ...Table 20 Part list continued...
Page 38: ...13 NOTES 38...
Page 39: ...39...
Page 40: ...40...
