11
Comfort
Setting
Option
Target
Time
(Minutes)
Stage Up
Percentage
(%)
Stage Down
Percentage
(%)
Over Target
Threshhold
(Strike Count)
Under Target
Threshhold
(Strike Count)
1
10
20
20
2
10
2
15
20
20
4
8
3
20
20
20
6
6
4
25
20
20
8
4
5
30
20
20
10
2
The following table shows the ranges for each of item when
the adjustable Comfort Setting Option 6 is selected. The
table shows the minimum value, the maximum value and
the defaulted value. All items can be adjusted up or down
by increments of 1 which provides full flexibility for all items.
Note: it is critical that these numbers be set
properly. If Comfort Setting option 3 is desired
but a target time of 60 is preferred, select
Comfort Setting Option 6 to enable all the
adjustable menus, set the Target Time to 60 and
make sure the other menus are set to match that
of Comfort Setting Option 3.
Menu
Minimum Value Maximum Value Default Value
Target Time (t9t)
1 minute
240 minutes
60 minutes
Stage Up Percent (SUP)
0%
100%
20%
Stage Down Percent (SdP)
0%
100%
20%
Over Target Threshold (Ott)
1 strike
254 strikes
20 strikes
Under Target Threshold (Utt)
1 strike
254 strikes
20 strikes
13 Electrical and Control Wiring
IMPORTANT:
All routing of electrical wiring must be made through
provided electrical knockouts. Do not cut, puncture or alter the
cabinet for electrical wiring.
13.1 Building Electrical Service Inspection
This unit is designed for single-phase electrical supply only.
DO NOT OPERATE ON A THREE-PHASE POWER SUPPLY. Mea
-
sure the power supply to the unit. The supply voltage
must
be measured and be in agreement with the unit nameplate
power requirements and within the range shown.
Nominal Input
Minimum Voltage
Maximum Voltage
208-240
197
253
ELECTRICAL VOLTAGE
Table 7
13.2 Wire Sizing
Wire size is important to the operation of your equipment.
Use the following check list when selecting the appropriate
wire size for your unit.
FIRE HAZARD!
To avoid the risk of property damage, personal injury
or fire, use only copper conductors.
HIGH VOLTAGE!
Failure to do so may cause property damage,
personal injury or death.
Disconnect ALL power before servicing.
Multiple power sources may be present.
HIGH VOLTAGE!
To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
electrical ground. The
electrical ground circuit may consist of an
appropriately sized electrical wire connecting the
ground lug in the unit control box to the building
electrical service panel.
Other methods of grounding are permitted if performed
in accordance with the National Electric Code
(NEC)/American National Standards Institute
(ANSI)/National Fire Protection Association (NFPA) 70
and local/state codes. In Canada, electrical grounding
is to be in accordance with the Canadian Electric Code
(CSA) C22.1.
uninterrupted, unbroken
•
Wire used must carry the Minimum Circuit Ampacity (MCA)
listed on the unit’s Series and Rating Plate.
• Refer to the NEC (USA) or CSA (Canada) for wire sizing. The
unit MCA for the air handler and the optional electric heat
kit can be found on the unit Series and Rating Plate.
•
Wire must be sized to allow no more than a 2% voltage
drop from the building breaker/fuse panel to the unit.
• Wires with different insulation temperature rating have
varying ampacities - be sure to check the temperature rating
used.
Refer to the latest edition of the National Electric Code or in
Canada the Canadian Electric Code when determining the
correct wire size.
13.3 Maximum Overcurrent Protection (MOP)
Every installation must include an NEC (USA) or CEC (Canada)
approved overcurrent protection device. Also, check with
local or state codes for any special regional requirements.
Protection can be in the form of fusing or HACR style circuit
breakers. The Series and Rating Plate provides the maximum
overcurrent device permissible.
NOTE: Fuses or circuit breakers are to be sized larger than
the equipment MCA but not to exceed the MOP.
13.4 Electrical Connections – Supply Voltage
IMPORTANT NOTE: USE COPPER CONDUCTORS ONLY.
Knockouts are provided on the air handler top panel and
sides of the cabinet to allow for the entry of the supply volt
-
age conductors, as shown in Figure 13. If the knockouts on
the cabinet sides are used for electrical conduit, an adapter
ring must be used in order to meet UL1995 safety require
-
ments. An NEC or CEC approved strain relief is to be used
