How it Works
Bosch
Loading...
3H/2C

Bosch 3H/2C Installation & Operation Manual

Bosch Programmable Thermostat
3H/2C Touch-Technology Thermostat
- Compatible with Bosch SM Water Source Heat Pumps
Installation, Operation & Application Manual
|
2
Data subject to change
08.2016 | Bosch Thermotechnology Corp.
Installation, Operation & Application Manual Bosch 3H/2C Touch-TechnologyThermostat | 3
Table of Contents
1 Key to symbols and safety instructions 4
1.1 Key to symbols 4
1.2 Safety 4
2 Thermostat specifi cations and features 5
2.1 Thermostat Controls 5
2.2 Thermostat features 5
2.3 Package contents/tools required 5
2.4 Specifi cations 5
3 Installation 6
3.1 Removing existing thermostat 6
3.2 Battery installation and information 6
3.3 Installing thermostat 6
4 Wiring diagram 7
4.1 Terminal designator descriptions 7
7 Factory preprogramming 19
8 Troubleshooting 20
5 System setup and confi guration 8
5.1 Connection to the UPM 8
5.2 Confi guration of the UPM 8
5.3 Output chart 8
5.4 Confi guration and thermostat lock 8
5.5 Locking & unlocking thermostat 8
5.6 Changing the lock code 9
5.7 Confi guration mode 9
5.8 Confi guration Mode Settings 9
6 Mode of operation 13
6.1 Icon Functions 13
6.2 Operating Modes 14
6.3 Testing the Thermostat 15
6.4 Setting the Time and Date 15
6.5 Setting the program schedule 16
6.6 View screen options 16
6.7 Viewing fault codes 17
6.8 Schedule override 18
6.9 Setting the vacation timer 18
Bosch Thermotechnology Corp. | 08.2016
Data subject to change
|
4
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
Warnings in this document are identifi ed by a warning triangle
printed against a grey background. Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken.
The following keywords are defi ned and can be used in this document:
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
NOTICE is used to address practices not related to personal injury.
1.2 Safety
Please read before proceeding
WARNING:
Always turn off power at the main power supply before
installing, cleaning, or removing thermostat.
Read this manual carefully before installing or operating your new
thermostat. Make sure to save this manual for future reference.
WARNING:
This thermostat is for 24 VAC applications only; do not use on
voltages over 30 VAC.
Do not short across terminals of gas valve or system control
to test operation; this will damage your thermostat and void your warranty.
Important information
This symbol indicates important information where
there is no risk to people or property.
All wiring must conform to local and national electrical and
building codes.
WARNING:
Do not use air conditioning when the outdoor temperature
is below 50 degrees; this can damage your A/C system and cause personal injuries.
WARNING:
Use this thermostat only as described in this manual.
WARNING: CLEANING AND MAINTENANCE
Turn off the device and pull the plug before cleaning. Failure
to do so can cause electrical shock.
Do not clean the air conditioner with excessive amounts of
water.
Data subject to change
Do not clean the air conditioner with combustible cleaning
agents. Combustible cleaning agents can cause fire or deformation.
08.2016 | Bosch Thermotechnology Corp.
Installation, Operation & Application Manual Bosch 3H/2C Touch-TechnologyThermostat | 5
2 Thermostat specifi cations and features
2.1 Thermostat Controls
Alarm Indicator
Check Filter Indicator
Left Arrow (Go Back)
Menu
Figure 1
2.2 Thermostat features
7-Day, 5-2-Day, or 5-1-1- Day Programmable
Configurable for Multiple Systems
Large Display with Backlight
Selectable Fahrenheit or Celsius
Icon Indicator Lights
Relay Outputs – Minimum Voltage Drop in Thermostat
Remote Sensor Compatible
Ideally Suited for:
— Residential (New Construction/Replacement)
— Light Commercial
Service Alarm
Fault Detection and History
CALL
SERVICE
TECH
t /C
HomeMode (Hea
ool) Fan Schedule
2.4 Specifi cations
Description Value
Electrical Rating:
DC Power: 3.0 VDC (2 “AA”Alkaline batteries)
Temperature Control Range: 45°F to 90°F (7°C to 32°C) Accuracy: ±1°F (±0.5°C)
Anti-short Cycle
Backlight Operations: 15 seconds
Table 1
Up Arrow
Down Arrow
Right Arrow (Forward)
24 VAC (18-30 VAC), 1 amp maximum per output terminal,
5 amp maximum total load
4 minutes (bypass anti-short cycle delay by returning to
OFF mode and pressing the
icon).
2.3 Package contents/tools required
Package includes:
Thermostat, base
Wiring labels
Screws and wall anchors
2 “AA” Alkaline batteries
Installation, Operation and Application Manual
Tools required for installation:
Drill with 3/16” bit,
Hammer
Screwdriver
Bosch Thermotechnology Corp. | 08.2016
Data subject to change
|
6
3 Installation
3.1 Removing existing thermostat
DANGER: ELECTRICAL SHOCK HAZARD
Turn off power at the main service panel by removing the fuse
or switching the appropriate circuit breaker to OFF position before removing the existing thermostat.
1. Turn off power to heating and cooling system by removing the fuse or switching the appropriate circuit breaker off .
2. Remove cover of old thermostat; this should expose the wires.
3. Label the existing wires with the enclosed wire labels before removing wires.
4. After labeling wires, remove wires from wire terminals.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to install this thermostat.
3.2 Battery installation and information
Two “AA” alkaline batteries are used for backup power only. They are installed into the back of the thermostat. Orient them in the correct direction as shown on the plastic thermostat case.
The batteries should be changed yearly to prevent leakage from damaging the thermostat and voiding your warranty.
If the batteries are not changed or low and the thermostat is not connected to 24 VAC or loses 24 VAC power, the thermostat will eventually display and conserve energy by maintaining a lower setpoint in heating and a higher setpoint in cooling.
3.3 Installing thermostat
DANGER: ELECTRICAL SHOCK HAZARD
Turn off power at the main service panel by removing the fuse
or switching the appropriate circuit breaker to OFF position before removing the existing thermostat.
CAUTION:
Thermostat installation must conform to local and national
building and electrical codes and ordinances.
Mount the thermostat about fi ve feet above the fl oor. Do not mount the
thermostat on an outside wall, in direct sunlight, behind a door, or in an area aff ected by a vent or duct.
1. Turn off power to heating & cooling system by removing the fuse or switching the appropriate circuit breaker off .
2. To remove sub base, pull it from the thermostat.
3. Put thermostat sub base against the wall where you plan to mount it (be sure wires will feed through the wire opening in the sub base of the thermostat).
4. Mark the placement of the mounting holes.
5. Set thermostat sub base and thermostat away from working area.
6. Using a 3/16” drill bit, drill holes in the places you have marked for mounting.
Data subject to change
7. Use a hammer to tap supplied anchors in mounting holes.
8. Insert stripped, labeled wires in matching wire terminals. Tighten screws to secure wires.
CAUTION:
Be sure exposed portion of wires does not touch other wires.
9. Gently tug wire to be sure of proper connection. Double check that each wire is connected to the proper terminal.
10. Install 2 “AA” batteries into back of thermostat.
11. Snap thermostat onto the sub base.
12. Turn on power to the system at the main service panel.
13. Confi gure thermostat to match the type of system you have.
14. Test thermostat operation as described in “Testing the Thermostat”.
08.2016 | Bosch Thermotechnology Corp.
Installation, Operation & Application Manual Bosch 3H/2C Touch-TechnologyThermostat | 7
4 Wiring diagram
UPM
OUT
ALR
COM
A
Figure 2
Factory installed jumper between RH and RC is required.
Thermostat is powered between RH & C.
Transformer
120 VAC
24 VAC
Cool/Compressor #1
Heat #1/Reversing Valve
Heat #2
Cool/Compressor #2
Heat #3
Fan
RH
RC
C
Y1
W1 O/B
G
W2
Y2
AUX
T H E
R M O
S
T
A
T
4.1 Terminal designator descriptions
A – Alarm/display (24 VACinput, switched from RH)
RC, RH – 24 VAC hot
C – 24 VAC common
Y1 – 1st stage cool, 1st stage heat for heat pumps
Y2 – 2nd stage cool for 2-stage or 2-compressor systems. 2nd stage heat
for 2-stage or 2-compressor heat pump systems.
G – Fan
W1/O/B – Configurable
— W1 – 1st stage heat for non-heat pump systems
— O – Cool active reversing valve
— B – Heat active reversing valve
W2 – 2nd stage heat for 1 compressor heat pump and non-heat pump
AUX – 3rd stage heat
Bosch Thermotechnology Corp. | 08.2016
Data subject to change
|
8
5 System setup and confi guration
5.1 Connection to the UPM
The UPM’s ALARM COM terminal should be connected to R on the UPM board (refer to unit manual for more information), and the ALARM OUT terminal should be connected to the A terminal on the thermostat. The UPM must be confi gured as described in Section 5.2.
5.2 Confi guration of the UPM
The ALARM DIP switch on the UPM has to be set to the ON position (“PULSE”). Simply push the right side of this switch, so it is down on the right side and up on the left side.
CONT
YES
UPM
4
2
R
Y
PULSE
NO
ALR
DISPLAY
OUTCOM
4321
LOCKOUT
RESET ALARM
TEST
The thermostat is confi gurable for all systems. The confi guration directly aff ects the outputs. Use the output chart to correctly confi gure and wire the thermostat to your system.
5.4 Confi guration and thermostat lock
During Confi guration Mode, certain settings are protected by a numeric code access screen to prevent unintentional changes that could potentially damage the system or create a dangerous condition.
Whenever changes are attempted to one of the critical settings, the unlock code screen will appear:
The unlock code for these critical settings can be found during the power-up sequence.
The large number (indicated by “98” in the diagram) is the code that will unlock the desired confi guration setting. The smaller numbers (indicated by “93” and “82” in the diagram) are codes used to lock and unlock your thermostat to prevent tampering.
To view the default codes for your thermostat, remove the thermostat from the sub base and, if using batteries, remove one battery for 10 seconds. Replacing the batteries or reinstalling thermostat will cause the codes to display for approximately 5 seconds.
Y1 W/O/B G W2 Y2 AUX
RH RC
A
C
Thermostat Back Plate
Figure 3
5.3 Output chart
Description 1st Cool 2n d Cool 1st Heat 2nd Heat 3rd Heat
G
W1, W2,
AUX, G*
Y1, W2,
AUX, G, B
Y1, Y2, W2,
G, B
N/A
Heat/Cool Y1, G YI, Y2, G W1, G* W1, W2, G*
Heat Pump (one compressor, single stage )
Heat Pump (one compressor, two stage and two compressor.)
Emergency Heat (heat pump only)
Y1, G, O Y1, G, O Y1, G, B
Y1, G, O
N/A N/A W2, G
Y1, Y2,
G, O
Y1, G, B
Y1, W2,
G, B
Y1, Y2,
G, B
W2, AUX**,
Table 2
* G not on for gas/oil systems
** One compressor only
Figure 4
5.5 Locking & unlocking thermostat
MENU
Press , then , then
Use & to select digit.
Use & to set number.
Press to lock or unlock.
LOCK
Write your
codes here
Thermostat lock code
, then
Data subject to change
08.2016 | Bosch Thermotechnology Corp.
Loading...
+ 16 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use