Carrier 33CS420-01 User manual

CAUTION
Follow the Installation Instructions before proceeding.
Set the thermostat mode to "OFF" prior to changing
settings in setup or restoring Factory Defaults.
CAUTION
NEVER PUTMORE THAN ONE
JUMPER ON THE SAME M]SC
JUMPER BLOCK!
THIS MAY DAMAGE YOUR
THERMOSTAT. D Mis¢_
OK
NOTE: Due to variations in environmental conditions, it is not
always possible to achieve the desired humidification or
dehumidification setpoint.
This device complies with Part 15 of the FCC Rules. Operation is
subject to the following two conditions: (1) this device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Thermostat 3368420 01
C US F_ T_ted_oCompr7wffh FCC Standards
LISTED FORHOUEOROmCEUSE
4Z95
Pagei

_,,_'ar,mmm"m'm E,'!
[,_
IIn
Page iii

Proper installation of the thermostat will be
accomplished by following these step by step
instructions, If you are unsure about any of these
steps, call a qualified technician for assistance,
Assemble tools
Flat Blade Wire cutter
Screwdriver & Stripper
.............] Make sure your Heater/Air Conditioner is working
' 1 properly before beginning installation of the
thermostat.
Carefully unpack the thermostat. Save the screws,
: : bracket, and nstructons.
Turn off the power to the Heating/Air Conditioning
system at the man fuse pane. Most res dent a
systems have a separate breaker for disconnecting
power to the furnace.
Page I. I

Removethecoveroftheoldthermostat.
Ifitdoesnotcomeoffeasilycheckforscrews.
Loosenthescrewsholdingthethermostat
baseorsubbasetothewall,andliftaway.
Disconnectthewiresfromtheoldthermostat.
Tapetheendsofthewiresasyoudisconnect
them,andmarkthemwiththeletterofthe
terminalforeasyreconnectiontothenew
thermostat.
Keeptheoldthermostatforreferencepurposes
untilyournewthermostatisfunctioningproperly.
Page 2. I

Section 3 Contents:
aConfiguring the Jumpers ........ 3.2
Explanation of Jumper
Settings .................................. 3.3
Page 3. I

Conj'7_ullng the Jumpers
For additional flexibility, your thermostat has three configurable
outputs. These outputs are designed to have different functions /
depending on how the jumpers are set (below).
Each output, labeled MISC1, MISC2, and MISC3 may be set for one
of the four choices available.
In the diagram below, the MISC3 jumper has been set for HUM*
(humidification) operation, the MISC2 jumper has been set for
DEHUM* (dehumidification) operation, and the MISC1 jumper has
been set for Y2 (second stage cooling) operation.
W c
HUM--
DEHUM--
1
MISC3 MISC1 (O_NLY)
_The Humidity Module (sold separately) must
be installed to operate a humidification
and/or dehumidification system.
CAUTION
NEVER PUT MORE THAN
ONE JUMPER ON THE SAME
MlSC JUMPER BLOCK!
DOING SO MAY DAMA GE
YOUR THERMOSTAT AND
VOID THE WARRANTY MISC3
OK
Page 3.2

Explanation o ]ump Se ing5
W3 M ULTFSTAGE OPERATION EXPLAINED - SECTION 13 of the Owner's
Manual
The 3rd Stage of Heat is turned on when:
(A) The 1st and 2rid stages have been on for the time required (steps 23
and 24, page 13.6). ]t is adjustable from 0-60 minutes and the default
And is two minutes,
(B) The temperature from the setpoint is equal to or greater than: the set-
point plus the 1st stage deadband (step #20, 13.5), plus the 2nd stage
deadband (step #21, 13.5) plus the 3rd stage deadband (step #22,
I3.5). This 3rd stage deadband is adjustable from 0-10 degrees and
the default is two degrees
.oa,,oo4! coo,,oo
I L _Deadbar'd,_L,geadbar'd,JjDeadbar' jDeadbar'dl2ea dbar'dl I
(ad I 0 1 (ad I 0 1 (ad I 1_ (adl f_) I 0 10 ) [
3rd Stage 2nd Stage 1 si Siage Heat COOl 1 si Siage 2nd Siage
turn on iurn on iurn on Setpoint Setpo_nt iurn on iurn on
_DECREASE--[TEMPERATUREJ--INCREASE_
HUM JUMPER SETTING
ff the jumper for MISCI , MISC2, or MISC3 is set to HUM, the corresponding MISC screw
terminal on the backplate will control a humidification system.
HUM[D]F]CAT]ON OPERATION - SECTION 9 of the Owner's Manual
If your HVAC unit is equipped with a humidification system and the Humidity
Module (sold separately) has been installed, the thermostat will provide power
to the MiSC1, MISC2, or MISC3 terminal of the thermostat when the
humidity in the home falls below the humidity setpoint you have chosen.
The value for this setpoint ranges from 0% to 60%. If no humidity is desired or
if a humidification system has not been installed, set the value to OFR
Page 3.3

Exp nadon of]ump Settings
DEHUM JUMPER SETTING_
If the jumper for MISCI, MISC2_ or MISC3 is s_t_ding MISrC screw
terminal on the backplate will be connected to the dehumidification terminal of a furnace
board.
NOTE: Not all furnaces have a dehumidification terminal.
DEHUMIDIFICATION OPERATION -SECTION 10 of the Owners Manual
If your HVAC unit is equipped with a dehumidification system the thermostat will
operate in one of two ways
1) Normally Closed (NC): The thermostat will de-energize the M]SC1, M]SC2,
or M]SC3 terminal of the thermostat (this M]SC terminal is connected to the
DEHUM terminal on your furnace) to allow the fan to run in low speed when
the humidity in the home is above the dehumidify setpoint you have chosen
and there is a call for 1st stage cooling
2) Normally Open (NO): The thermostat wilt energize the M]SC1, M]SC2, or
M]SC3 terminal of the thermostat (this M]SC terminal is connected to the
DEHUM terminal on your furnace) to allow the fan to run in low speed when
the humidity in the home is above the dehumidify setpoint you have chosen
and there is a call for 1st stage cooling
Page 3.4

Explanation of ]umper Settings ¢_o.tt.=d_
_1Y2 JUMPER SETTING
If the jumper for MISC1 is set to Y2 the MISCt screw terminal on the backplate
will control a second stage of cooling,
Y2 OPERATION - SECTION 13 of the Owner's Manual
Control up to two Coot stages,
The 2nd Stage of heat or cool is turned on when:
(A) The 1st Stage has been on for the time required (step #23,
page 13.6). It is adjustable from 0-60 minutes and the default
Ls two minutes,
And
(B) The temperature spread from the setpoint is equal to or greater
than: the setpoint plus the deadband (step #24, page 13.6), plus
the 2nd deadband (step #21, page 13.5). This 2nd deadband is
adjustable from 0-10 degrees and the default is two degrees
e Cooling
"'db'_tl_"db'_tl
db _ _ db_
ad "-6" _ O- O" X
Cool Ist Stage 2nd Stage
Setpoi_t {urn on {urn on
ITEM PE RATU REJ --I NCREASE -----_
Page 3.5

If the terminal designations on your old thermostat
do not match those on the new thermostat, refer
to the chart below, or the wiring diagrams
that follow,
Wire from the
old thermostat
terminal marked
GorF
Y1,YorC
Wl,WorH
Rh, R, M, Vr, A
Function
Fan
Cooling
Heating
Power
Install on the
new thermostat
connector marked
G
Y1
WI/O/B
C
O/B
W2
MISC1
MlSC2
MISC3
RS+5
RSGND
RS2
COrnlqqon
Rev. Valve
2rid Stage Heat
Configurable Output #1
Configurable Output #2
Configurable Output #3
Outside Sensor +5vdc
Outside Sensor Ground
Outside Sensor Signal #2
C
WI/O/B*
W2
MISC1
MlSC2
MISC3
RS+5
RSGND
RS2
* O/Bis used ifyour system isa HeatPump.
Page 4. I

Section 5 Contents:
HVA C Equipment Wiring ............ 5.2
MISC1, MISC2, and MISC3
Wiring ........................................ 5.6
aInstalling the Outside Sensor...5.8
Page 5. [

6 Wire, 1 Stage Cooling, 1 Stage Heat
Residential & Commercial I Stage Cooling, Commercial Heat Pump I Stage Cooling
with I st Stage Gas Heat OR with 2 Stage Heat
111
24 vac common O []
24 vac return _ []
Fan relm _ []
Compressor rela ._ []
1st stage heat circuit ._ []
2nd stage heat circuit ._ []
6 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.

6Wire,1StageCooling,1StageHeat
ResidentiaF&CommercialIStageCooling,
withIstStageElectricHeat
w?
MISC3
RS+5
RSGND
0
0Wl/ }
GO II
MIS_C2li
o;18
24 vac return
Fan relay
Compressor relay
1st stage heat circuit
2nd stage heat circuit
-ELEC
--GAS _ _
[i_HP
-GAS 6 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.
_-_ _.
24 vac common []
[]
[]
[]
[]

6 Wire, 1 Stage Cooling, 2 Stage Heat
Residential Heat Pump with O Reversing
Valve I Stage Cooling, with 2 Slage Heat
-::S
24 vac common O []
24 vac return _ []
Fan Relay _ []
Compressor Relay _. []
ReversingValve O []
2nd stage heat circuit _ []
6 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.

6Wire,1StageCooling,2StageHeat
ResidentialHeatPumpwithbReversing
ValveISlageCooling,with2StageHeat
3
mm W_
qrOIMtSC_
_O_RS+5
RSGND
I_]- ELEC2 C:)
--GAS _ _
--GAS 6 Conductor 18 gauge
unshielded cable from the
thermostat to the equipment.
24 vac common 0 []
24 vac return _ []
Fan Relay O []
Compressor Relay _. []
ReversingValve ._ []
2nd stage heat circuit ._ []
:::5- "-_
0
ic
wd,Bl-oq

Adding a 2nd Stage of Cooling (MISCl) and a 3rd Stage of Heating (MISC3)
m
0
_SGND 0 J
(MISC1
MISC3 MISC2 MISC1 ONLY}
Page 5.6

Adding a Humidification System (MISCl) and Dehumidification System (MISC2)*.
0
O
--- _IOIMBCl _llOp
_IOIR_2 GIOIm
JlOIMl¢cs.........................................................Mls:C21OP
18r° 181
o
DEHUM--
)MjYs2cl --_ Humidity Module
MISCSMISC2MISCl';_t_; _(s_v)
SystemDehumidification
SystemHumidification
*Requires Humidity Module.

Installing the Outside Sensor
One wired or wireless remote sensor may be installed to read the
outside temperature (RS2). The wired sensor can be connected to
the thermostat with up to 150' of 18 ga,, 300' of 20 ga,, or 450' of
22 ga, unshielded, thermostat wire, The wired sensor can be
connected to the thermostat using a two or three wire installation.
Ifa two wire installation is required, then RS+5 must be /
connected to RSGND (see below).
This wire MUST be completely separated from the thermostat or
any other control wiring and must NOTbe in the same conduit
as high voltage wiring.
0
f Ml_c_..........................................M/S_c2
g
Outside Sensor
See the Outside Sensor accessory for further details.
Page 5.8