ClimateMaster ATP21W02 Installation Instructions Manual
CONTENTS
Installation Instructions for
97B0082N07
Heating & Air Conditioning
ATP21W02
5/2 Day Programmable
Heat Pump Thermostat
Y OUR THERMOST A T REPLACES
Description
Heat Pump (No Aux or Emergency Heat) Yes
Heat Pump (with Aux or Emergency Heat) Yes
Millivolt Heat Only Systems – Floor or Wall Furnaces No
Hydronic (Hot Water) Zone Heat – 2 Wires No
Hydronic (Hot Water) Zone Heat – 3 Wires No
Preparations .................................................1
Thermostat Details .......................................1
Removing Old Thermostat ........................1-2
Mounting and Wiring................................. 2-3
Check Thermostat Operation ................... 4-5
Programming your Thermostat .................6-7
Specifi cations ...............................................7
Troubleshooting ........................................7-8
Revision History..........................................12
PREPARATIONS
1
Assemble tools required as shown below.
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HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED
Failure to follow and read all instructions carefully
before installing or operating this control could cause
personal injury and/or property damage.
FLAT BLADE SCREWDRIVER
SPIRIT LEVEL OR PLUMB BOB AND LINE OPTIONAL—
THERMOSTAT DOES NOT NEED TO BE LEVEL TO WORK PROPERLY
WIRE CUTTER/STRIPPER
THERMOSTAT DETAILS
2
EMR
W904
Clip for
Celsius
W905
Clip for
Slow Cycle
Figure 1. Thermostat base
Mounting
hole
W903
Clip to
Disable
Feature
Mounting
hole
Terminal
Switches
Selection
W906 for Emergency
Heat Second Stage
Fan Control
O/B
REMOVING OLD THERMOSTAT
3
CAUTION
!
To prevent electrical shock and/or equipment damage,
disconnect electrical power to the system at the main
fuse or circuit breaker until installation is complete.
Before removing wires from old thermostatҋs switching subbase,
label each wire with the terminal designation it was removed from.
1. Remove Old Thermostat: A standard heat/cool thermostat
consists of three basic parts:
a. The cover, which may be either a snap-on or hinge type.
b. The base, which is removed by loosening all captive screws.
c. The switching subbase, which is removed by unscrewing
the mounting screws that hold it on the wall or adaptor plate.
2. Shut off electricity at the main fuse box until installation is
complete. Ensure that electrical power is disconnected.
3. Remove the front cover of the old thermostat. With wires still
attached, remove wall plate from the wall. If the old thermostat
has a wall mounting plate, remove the thermostat and the wall
mounting plate as an assembly.
4. Identify each wire attached to the old thermostat.
5. Disconnect the wires from the old thermostat one at a time. DO
NOT LET WIRES FALL BACK INTO THE WALL.
6. Install new thermostat using the following procedures.
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
ATP21W02
Created: 21 November, 2014
REMOVING OLD THERMOSTAT
3
CONTINUED FROM FIRST PAGE
ATTENTION! This product does not contain mercury. How-
ever, this product may replace a unit which contains mercury.
Do not open mercury cells. If a cell becomes damaged, do not
touch any spilled mercury. Wearing non-absorbent gloves, take
up the spilled mercury and place into a container which can be
sealed. If a cell becomes damaged, the unit should be discarded.
Mercury must not be discarded in household trash. When the unit
this product is replacing is to be discarded, place in a suitable
container and return to White-Rodgers at 2895 Harrison Street,
Batesville, AR 72501-2117 for proper disposal.
MOUNTING AND WIRING
4
WARNING
!
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could cause
shock or fire hazard.
Do not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will damage
thermostat and could cause personal injury and/or
property damage.
Thermostat installation and all components of the
system shall conform to Class II circuits per NEC
code.
Electric/Gas Jumper (Fan Option)
If your emergency or auxiliary system will energize the blower, then
jumper W906 on the thermostat base must be cut (see fig. 1).
If your emergency or auxiliary heat system requires that the
thermostat energize the fan circuit, do not cut jumper W906.
If you are unsure of your application, contact a qualified service
person.
$F or $C Selection
The factory default setting for temperature display is Fahrenheit.
If you want the temperature in Celsius, clip jumper W904.
Fast or Slow Cycle Selection
The factory default setting is fast cycle, which cycles 1st stage at
approximately 1.2$F and 2nd stage 0.75$F. If you prefer slow
cycle, clip jump W905. The 1st stage and 2nd stage would be
1.5$F and 1.2$F respectively.
O/B Terminal Switch Selection
The O/B switch on this thermostat is factory set to “O” position.
This will accommodate the majority of heat pump applications,
which require the changeover relay to be energized in COOL. If
the thermostat you are replacing or the heat pump being installed
with this thermostat requires a “B” terminal, to energize the
changeover relay in HEAT, the O/B switch must be moved to the
“B” position.
CAUTION
!
Take care when securing and routing wires so they do
not short to adjacent terminals or rear of thermostat.
Personal injury and/or property damage may occur.
Attach Thermostat Base to Wall
1. Remove the packing material from the thermostat. Gently pull
the cover straight off the base. Forcing or prying on the
thermostat will cause damage to the unit.
2. Connect wires beneath terminal screws on base using appropriate wiring schematic (see figs. 2 through 4).
3. Place base over hole in wall and mark mounting hole locations
on wall using base as a template.
4. Move base out of the way. Drill mounting holes.
5. Fasten base loosely to wall, as shown in fig. 1, using two
mounting screws. Place a level against bottom of base, adjust
until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are
using existing mounting holes, or if holes drilled are too large
and do not allow you to tighten base snugly, use plastic screw
anchors to secure subbase.
6. Push excess wire into wall and plug hole with a fire-resistant
material (such as fiberglass insulation) to prevent drafts from
affecting thermostat operation.
Battery Location
This thermostat does not require batteries to operate. The 2 “AAA”
alkaline batteries are for the thermostat to remember the programming if AC voltage is lost. If the display shows BATT when
AC power is not present, the batteries are low and should be
replaced with fresh “AAA” Energizer
place the batteries, install the batteries along the top of the base
(see fig. 1). The batteries must be installed with the positive (+)
ends to the right.
®
alkaline batteries. To re-
Energy Management Recovery (EMR)
This thermostat is set to operate with EMR. This causes the
thermostat to start the heating or cooling system early to have
the room temperature reach the program setpoint at the time
the period is to start.
To disable EMR, clip jumper W903 (see Fig. 1).
2
ClimateMaster Water-Source Heat Pumps
THE SMART SOLUTION FOR ENERGY EFFICIENCY
MOUNTING AND WIRING
4
CONTINUED FROM SECOND PAGE
Changeover
Relay*
* Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency
SYSTEM
MONITOR
SWITCH
L
24 VAC
TRANSFORMER
Compressor
Contactor
G W2
Fan
Relay
Aux
Relay
(Stage 2)
See Note **
Emergency
E
Relay
CYO/B
Figure 2. Typical wiring diagram for single transformer systems
THERMOSTAT
R
(Class II)
ATP21W02
Created: 21 November, 2014
SYSTEM
Hot
120 VAC
Neutral
If safety circuits are in only one of the systems, remove
the transformer of the system with NO safety circuits.
CUT AND
TAPE OFF!
HOT
120 VAC
NEUTRAL
* Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency
24 VAC
Changeover
Relay*
Compressor
Contactor
G W2
Fan
Relay
Figure 3. Typical wiring diagram for two transformer systems with NO safety circuits
Polarity must be observed. If the HOT side of the second transformer
is jumpered to the COMMON side of the first transformer a short will
be made. Damage to equipment will occur when power is restored.
G W2
Changeover
Relay*
Compressor
Contactor
* Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position
** Jumper required to use a single Aux Heat for both Second Stage Heat and Emergency
Fan
Relay
Aux
Relay
(Stage 2)
E
CYO/B
See Note **
Emergency
Relay
TWO COMMONS MUST
BE JUMPERED TOGETHER!
SYSTEM
MONITOR
SWITCH
Figure 4. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems
NOTE
See Note **
Emergency
Aux
Relay
(Stage 2)
TWO COMMONS MUST
BE JUMPERED TOGETHER!
NOTE
L
R
COMMON
E
Relay
Limit or
Safety
Switches
CYO/B
SYSTEM
MONITOR
SWITCH
Limit or
Safety
Switches
24 VAC
24 VAC
ACCESSORY
RELAY N.O.
CONTACT
COMMON
24 VAC 120 VAC
Heat Pump Transformer
(Class II)
L
Limit or
Safety
Switches
THERMOSTAT
SYSTEM
Auxiliary
Heating
Transformer
(Class II)
THERMOSTAT
R
SYSTEM
(Class II)
Limit or
Safety
Switches
NOTE
HOT
NEUTRAL
Hot
120 VAC
Neutral
HOT
NEUTRAL
24 VAC
TRANSFORMER
120 VAC
The accessory relay scheme
is required when safety
circuits exist in both systems.
Limit or
Safety
Switches
climatemaster.com
3
CLIMATEMASTER WATER-SOURCE HEAT PUMPS
ATP21W02
Created: 21 November, 2014
CHECK THERMOST A T OPERA TION
5
NOTE
To prevent static discharge problems, touch side of thermostat to release static build-up before touching any keys.
If at any time during testing your system does not operate
properly, contact a qualified serviceperson.
Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
1. Turn on power to the system.
2. Move fan switch to ON position. The blower should begin to
operate.
3. Move fan switch to AUTO position. The blower should stop
immediately.
CAUTION
!
Do not allow the compressor to run unless the compressor oil heaters have been operational for 6 hours and the
system has not been operational for at least 5 minutes.
Heating System
1. Move SYSTEM switch to HEAT position. If the auxiliary
heating system has a standing pilot, be sure to light it.
2. Press
temperature. The heat pump system should begin to operate.
However, if the Flame icon (
flashing, the compressor lockout feature is operating (see
Configuration menu, item 2.)
3. Adjust temperature setting to 4$ above room temperature. The
auxiliary heat system should begin to operate and the Flame
icon (
4. Press
ture. The heating system should stop operating.
to adjust thermostat setting to 1$ above room
) and Snowflake icon ( ) are
) will be flashing.
to adjust thermostat setting below room tempera-
Cooling System
1. Move SYSTEM switch to COOL position.
2. Press
ture. The blower should come on immediately on high speed,
followed by cold air circulation.
4. Press
perature. The cooling system should stop operating.
Before you begin programming your thermostat, you should be
familiar with its features and with the display and the location and
operation of the thermostat buttons. Your thermostat consists of
two parts: the thermostat cover and the base. To remove the
cover, gently pull it straight out from the base. To replace the
cover, line up the cover with the base and press gently until the
cover snaps onto the base.
to adjust thermostat setting below room tempera-
to adjust temperature setting above room tem-
The Thermostat Buttons and Switches
1
(Up arrow) Raises temperature setting.
(Down arrow) Lowers temperature setting.
2
3
TIME button.
PRGM (program) button.
4
5
RUN (program) button.
6
HOLD button.
7
FAN switch (ON, AUTO).
SYSTEM switch (COOL, OFF, HEAT).
8
The Display
Indicates day of the week.
9
Indicates a malfunction with the system.
10
Emergency System
EMER bypasses the Heat Pump to use the heat source wired
to terminal E on the thermostat. EMER is typically used when
compressor operation is not desired, or you prefer back-up
heat only.
1. Move SYSTEM switch to EMER position. EMER will flash on
the display.
2. Press
ture. The Aux heating system will begin to operate. The
Flame icon (
system is operating.
3. Press
The Aux heating system should stop operating.
To prevent compressor and/or property damage, if the
outdoor temperature is below 50
cooling system
4
to adjust thermostat setting above room tempera-
) will display flashing to indicate that the Aux
to adjust the thermostat below room temperature.
CAUTION
!
$F, DO NOT operate the
ClimateMaster Water-Source Heat Pumps
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