Johnson Controls T6000 Series User manual

601V-B01A-NB Rev 2-Issue Date 09 2012 1
T6634-TA10҈TE20҈TF20-9JS0 Series Fan Coil Thermostat (ON/OFF) - Installation Instructions
T6634-TA10҈TE20҈TF20-9JS0亨⏄橻㣧䢅䵎㿖㕔⠕ (キ⌠⤸) -ⴶ婲嶡㞻
Field Cabling
⦄എ᥹㒓
Wall Box 2 MX5
Mounting Screw
๭㺙᥹㒓Ⲧ,ϸᵮMX5
ᅝ㺙㶎䩝
Retention Screw
೎ᅮ㶎ϱ
ĀWaferāConnector with 12cm 20AWG PVC Cable
ᏺ᳝12cm㒓䭓,ᦦᢨᓣ"Wafer"᥹㒓, 20AWG PVCᓣ⬉㒓
Wall Box
๭㺙᥹㒓Ⲧ
Base
ᑩⲪ
Cover
໪໇
཮1: T6634ᇛ༮Ꮝ໮ࠞ঩ധ࣏ၫ૿ධ
Figure 1:T6634 LCD Digital Fan Coil Thermostat
Application
T6000 LCD Digital Fan Coil Thermostats
The T6000 Digital Fan Coil Thermostats feature local temperature control within fan coil
operations. Select the temperature scale and setpoint, the mode, and the differential values
to control the Heating, Ventilating, and Air Conditioning (HVAC) system that maintains the
desired room temperature. The optional Occupied/Unoccupied feature saves energy by
enlarging the acceptable temperature range.
T6000 features with Backlit Liquid Crystal Display (LCD), one Mode/Timer (M/) selection
button, two Adjustment buttons (ɘ&), one Fan Speed ( ) selection button and one On/Off
() button.
཮2:T6634Ⴜளၫ૿ධڞ܄(mm)
Figure 2: T6634 Series Thermostat Dimensions (mm)
Ҿጎ
T6000ၫ૿ධ՗Ꭷ኷ቂ๒ᇸ࣎૛ൺಸݲၫޡົށݞܿݓߴȃ؃໪ၫ૿ධၤ቙೙
ܗװ߶ৱᏓ࿒ၫޡܿݓߴȃןಁၫ૿ධ՗Ꭷ቙୩฽ኑࡒˈ๜࿳ࠞଁȂৠ฽
ධȂ༃ိডᆷࣕጐືܸܿݓߴȃ
Ҿጎ
T6000Ⴜளၫ૿ධົ৓ၓ׭Ꮃ75x75x 35mmුᎧღՙᎧȃ (཮3)
ՙጐፑ໯܏૑࡜ݒᏰˈնྋ՗Ꭷ኷ුຢ؃ღȃ
ጀᅪ: ྈ቏T6000Ⴜளၫ૿ධᄲˈᅍᇋ஠ౕMx5՗Ꭷఞݽ (፩Ꮛܕˈ๜ᇦ໘ˈᅍت
ቂPWT2.5X5X5.5ఞݽ)ȃ
Installation
Install the T6000 where the occupant can read the display and adjust the setpoint easily.
Situate the thermostat where the temperature is representative of the general room
conditions. Avoid installing the T6000 near cold or warm air drafts, radiant heat, on an
outside wall, or in direct sunlight.
Mounting
Mount the T6000 Series thermostat to a 75x75x35mm standard electrical wallbox. (See
Figure 3)
Follow the instruction in removing the base and then proceed to the wall box Mounting and
the Wiring sections.
Note: All T6000 Series models require two No. Mx5 mounting screws (Included in the box,
screw PWT2.5X5X5.5 is required if missing).
ᆌᆩ
T6000ᇛ༮Ꮝ໮ࠞ঩ധ࣏ၫ૿ධ
T6000༮Ꮝ໮ࠞ঩ധ࣏ၫ૿ධ໪ቂო٠ၫޡହ૿፟ࠞ঩ധ࣏ܿත࿮ˈ໪ቂܾܸ༗໻
ܿȃ࿳ࣰᅤዎঽົށၫޡȂࠞཨȂከᄵಠ໮ྈᅍد༮ˈହ૿፟ৠ฽Ȃ࿳ࠞ
ૼݲ˄HVAC˅Ⴜ࿾ˈ۰ߑၕڕܿ୲ჲၫޡȃዓৠ቏เ/ႇเ৭૿Ꭷ፜ˈතވ቏เ
/ႇเಠ໮໪ၫޡධ኷ႇเ໢ົށၫޡᏋވקڈ೙ၫޡˈ۰ߑ܌ܸኙ೙ኑȃ
T6000ၫ૿ධົ቏ܕֶࣕᇛმ໯˄LCD˅Ȃᇜࢋಠ໮/໢ৱ˄M/˅ᅤዎՙഀˈߗࢋ
ݲՙഀ˄ɘ
˅Ȃᇜࢋࠞཨ˄ ˅ᅤዎՙഀᇜࢋOn/Off˄ ˅
601V-B01A-NB Rev 2-Issue Date 09 2012
This document is subject to change without notice 㣙㜴㨐⬯㢶▅Ⓝ的㈂Ὰ▓姹懇䦒
཮3: ّ૑ဇ
Figure 3:Exploded View
ٶڹӱ
མ૑˄ᇋถ჉˅ၫ૿ධݾؠᇜࢋఞݽˈ෸෸ჹ෇ଲၫ૿ධˈၫ૿ධܿᇈࢦખ۰՗
ᎧݒᏰݒؠܿᇈؼလ୰ˈ໪ܾ՗Ꭷღ߾٢ߴצȃሠ፟ݢ௸֊˄PCB˅ࢿށ኷ළ
࡜ܿ୴ಅˈಅ፩ؠၓஏݽȃ
Removing the Base
Loosen (Do Not Remove) the single Phillips-Head retaining screw at the top of the case to
swing the thermostat slightly away from the base. By gently sliding it forward, the thermostat
hinge hooks come away from the hinge slots at the bottom of the mounting base to provide
easy access for mounting and wiring. The Printed Circuit Board (PCB) is attached inside the
cover with connection pin near the middle of the mounting base.
70mm.
70mm.
27mm.
30mm.
Retention Screw ೎ᅮ㶎ϱ
Hinge Hook
࣒

T6634-TA10҈TE20҈TF20-9JS0 Series Fan Coil Thermostat (ON/OFF) - Installation Instructions
T6634-TA10҈TE20҈TF20-9JS0亨⏄橻㣧䢅䵎㿖㕔⠕ (キ⌠⤸) -ⴶ婲嶡㞻
601V-B01A-NB Rev 2-Issue Date 09 2012 2
཮4: T6634-TA10-9JS0ღဇ
Figure 4:Wiring Diagram for T6634-TA10-9JS0
Wallbox Mounting
To mount the T6000 Series Thermostat:
Pull the external field wiring from the wall through the rectangular opening in the base.
Fasten the base to the wallbox using the appropriate two holes and two Mx5 screws, as
shown in Figure 2.
Proceed to the Wiring section for the correct configuration for the application and units.
Wiring
Wire the unit according to the instructions for the appropriate model.
Note:
When wiring the T6000 Series Digital Fan Coil Thermostat, use wire nuts to finish and
isolate each connection.
When the wiring is Completed:
Push the connected wiring through the rectangular hole in the base into the wallbox space.
Hook the thermostat to the hinge at the bottom of the base and gently slide the thermostat
down into position on the mounting base.
Tighten the retention screw.
Proceed to the Setup and Adjustment section to establish the desired settings.
Wiring terminal designations and connections for typical applications appeared in Figure
4-6.
഻ጎ࢈Ҿጎ
՗ᎧT6000Ⴜளၫ૿ධ:
նိؠღ۰ු୴ଲڵ؃࿳ࣰ܏૑ܿߴᄳݒᏰȃ
࿳ࣰ஠ࢋ՗Ꭷ૾ቪ஠ౕMx5ఞݽˈնݒᏰࢿށ኷՗Ꭷຢˈ๜཮2ྈ໯ȃ
ࢎદሥቂٛ൰ܿᇋชᄵጸฬܿღȃ
থ၍
ࢎદፑܷˈࢍ໻ܬᄲܿၫ૿ධღȃ
ጀᅪǖࢍT6000Ⴜள༮Ꮝ໮ࠞ঩ധ࣏ၫ૿ධღ໢ˈ໪ቂღఞ౐ဵڈુኒ౞ࢋ
ღޤȃ
ړথ၍ྜׯࢫ:
࿳ࣰݒᏰߴᄳ૾ˈնஏღထ๠ුᎧ୴ȃ
኷ݒᏰᇈۃնၫ૿ධࢦ᎘؃෸෸ထވၫ૿ධፚ՗ᎧݒᏰຢಅȃ
ࢿށམఞཎȃ
ՙົށݲົށჲᇋܿد༮ȃ
ࢎદ཮4-6ܿݟᄲሥቂˈࢍፑށღޤღȃ
཮7: T6000 LCDმ໯
Figure 7:T6000 LCD Display Pattern
ֱօየ
ၫ૿ධ՗Ꭷဵגˈ኷୰૑ፇ෇ᇋ৹ي፟୩ৠ฽ဵጶܿغᏮᅰȃጝᆼ૰ᇵฬ֦
ྈ቏૿፟ົֻ࢙೙ጸ٢ȃ๜࣮ღጸฬˈߑົֻቕ೙ጸ٢ࢗᏮˈขખ஍Ⴜ
JohnsonControls®֑໳ۃହ࿓ၫ૿ධȃ
ยዃࢅۙব
ՙOn/Off ( ) ՙഀˈ૑ත࣋טT6000ၫ૿ධȃT6000ၫ૿ධ૑঩ᇵˈၫ૿ධმ໯
ၫޡȃLCDმ໯ဇ׭ˈ˄๜཮7˅ȃ
دૣװ2ˈT6000Ⴜளၫ૿ධڵ٦ົށፎ
Check-Out Procedure
After the installation, observe the complete operation cycles for cooling and heating control.
This is to make sure that all control devices are functioning correctly. If the device is not
working properly and the wiring is correct, the thermostat should be replaced by contacting
your nearest Johnson Controls®Representative.
Setup and Adjustments
Turn ON/OFF the T6000 Thermostat by pressing the On/Off ( ) button. After turning on
the T6000 Thermostat, ambient temperature will be displayed. LCD displays the icons. (see
Figure 7).
The T6000 Series Thermostat comes with the default settings specified in Table 2.
֡ፕ - M/ Ӏ౧
ఇ๕֡ፕ
T6634ၫ૿ධˈ቏๲፯ಠ໮ᅤዎ๜װ1ȃՙM/ՙഀغᏮၫ૿ධˈൺಸຢঐՙགᅗڵო
፟୩ ( )Ȃ፟฽ ( )Ȃࠞ঩ ( )˄T6634-TA10-9JS0ႇ፟฽ಠ໮˅ȃ־ᅤܿಠ໮ဇ׭
ດཇˈ3SᏋވฬไဇ׭־ᅤށȃᅤށဇ׭኶ດཇˈጸ٢მ໯኷ൺಸຢȃ
๜՗Ꭷம቏เ/ႇเ৭૿Ꭷ፜ˈ቏เ/ႇเಠ໮ ( ) ঐතވȃ
้ࠀీഔࢅ้ࠀీ࠲Կ֡ፕ
ՙ჉M/ 3ಊ๠ށ໢૑঩࢙೙ົ፜ȃۨ໢TIMEONဇ׭ڵოˈ؃ດཇˈ໪ቂɘ 
ົށށ໢૑঩໢ৱ˄0~24ᄆ໢߭ၐ˅ՙ ᄵฬไȃ
኶۫ՙ჉M/๠ށ໢࣋঩ಠ໮ົށˈۨ໢TIMEOFFဇ׭ڵოˈ؃ດཇˈ໪ቂɘ
ົށށ໢࣋঩໢ৱ˄0~24ᄆ໢߭ၐ˅ՙ ᄵฬไȃ
๜࣮኷3-5ಊ೗ౚ቏༕๠ˈൺಸ߬ইმ໯ၫޡȃ
Operation - M/ Button
Mode Operation
On the T6634 series, three modes are available as shown in Table 1 . Short press of the M/
button switches through the sequence of Cooling ( ), Heating ( ), Fan only ( ) modes
followed by operation (No Heating mode for T6634-TA10-9JS0). The selected icon will
flash, the icon is selected after 3 seconds. The selected icon appears highlighted on the
LCD.
Unoccupied mode ( ), will only be activated when the Occupied/Unoccupied contact is wired.
Time-On and Time-Off Operation
Holding down the M/ button for 3 seconds will enter the Timer On-Off setting. When the
TIMEON icon appear and flash, use ɘand keys to set the time duration (0 ~24 -Hours
Range). Press key to confirm the settings.
Holding down the M/button for seconds will enter the Timer On-Off setting, additional one
press to enter Time-On setting. When TIMEOFF icon appears, use ɘand keys to set the
time duration (0 ~ 24-Hours Range). Press key to confirm the settings.
Note: The thermostat returns to the default screen if no entry occurs within 3 -5seconds.
཮5: T6634-TE20-9JS0ღဇ
Figure5: Wiring Diagram for T6634-TE20-9JS0
཮6: T6634-TF20-9JS0ღဇ
Figure6: Wiring Diagram for T6634-TF20-9JS0

601V-B01A-NB Rev 2-Issue Date 09 2012 3
T6634-TA10҈TE20҈TF20-9JS0 Series Fan Coil Thermostat (ON/OFF) - Installation Instructions
T6634-TA10҈TE20҈TF20-9JS0亨⏄橻㣧䢅䵎㿖㕔⠕ (キ⌠⤸) -ⴶ婲嶡㞻
Up/Down (Ř& ) Adjustment Button
To adjust the temperature setpoint, simply pressing the ɘand button, allows 3-seconds
for setting to take effect. After 3-seconds without further adjustment, the screen returns by
displaying the ambient temperature.
Fan ( ) Speed Button
Cooling or Heating Mode Operation
T6634 has 4 speeds fan control (No Fan Stop); Auto ( ), High ( ), Middle ( ),
Low ( ) fan. Short press the ( ) button switches through the sequence. The selected icon
flashes, the icon is confirmed after 3 seconds. The icon will be displayed on the screen after
confirmed.
Fan only Operation
T6634 has 3 speeds fan control; High ( ), Middle ( ), Low ( ) fan. Short press the
() button switches through the sequence. The selected icon flashes, the icon is confirmed
after 3 seconds. The icon will be displayed on the screen after confirmed.
Note:
Every time switch On the T6000 Series thermostat, the low speed fan will be initiated.
These soft-start feature prevent high startup current, while provides energy saving to
electricity consumption. After 2 -seconds, the required fan speed will be started.
ฉ/ူ(Řࢅ ) ۙবӀ౧
ݲၫޡົށݞˈᅍՙɘ ՙഀˈ3ಊົ፜቏ᄌȃ3ಊౚ቏༕๠ݲˈൺಸ
߬ইმ໯ၫޡȃ
ޅ ( ) ໏܈Ӏ౧
዆ૐĂ዆ඤఇ๕֡ፕ
T6634ၫ૿ධ቏4፯ࠞ঩ཨޡˈᏋވ ( ), ࡴ( ), ፩( ), ݈( ) ࠞཨȃՙ ( ) ՙ
ഀˈᅰმ໯ȃ־ᅤܿಠ໮ဇ׭ດཇˈ3SᏋވฬไဇ׭־ᅤށȃᅤށဇ׭
኶ດཇˈጸ٢მ໯኷ൺಸຢȃ
ৈޅ֡ፕ
T6634ၫ૿ධ቏3፯ࠞ঩ཨޡˈࡴ ( ), ፩( ), ݈( ) ࠞཨȃՙ ( ) ՙഀˈᅰ
მ໯ȃ־ᅤܿಠ໮ဇ׭ດཇˈ3SᏋވฬไဇ׭־ᅤށȃᅤށဇ׭኶ດཇˈ
ጸ٢მ໯኷ൺಸຢȃ
ጀᅪ: ౞ᇜ۫૑࣋T6000Ⴜளၫ૿ධˈ૑໭໢ޕතވ݈ཨࠞ঩ȃጝᇜ๢තވ࿅ݞ߷
ፒࣰࡴතވݢ௚ˈ࿷໢ኙமቂݢˈ2ಊᇵˈࠞ঩ՙົށከᎡȃ
՗1/Table1՗2/Table2
ยֶۨኵ
኷࣋঩Ꭻྙ჉ՙM/ঽɘܚ ࠲ڵოˈ๠ከᄵد༮ົ፜ᎫྙȃՙM/෧࢙
೙ˈ ডɘݲጶყޭሥ࢙೙ܿد༮ˈ࢙೙ࣽሆ՗2ȃ
Քۨ
T6000Ⴜளၫ૿ධᅍᇋო٠׭ށȃ
ࠤቱႪ
ݢኑ፩ިˈၫ૿ධಠ໮ྈ቏ົ፜ইܸᏥ໪ቂডົ፜ࣰܿᎫྙȃ
ྼႪࢅ༺࣑
ᇋ༅ဇო٠ၕᅃT6000Ⴜளၫ૿ධȃ๜࣮ၫ૿ධ೙ጸ٢ࢗᏮˈขቪࡒJohnson
Controls® ֑໳ۃ஍Ⴜȃܬ஍Ⴜ֑໳ۃ࢑ٛ൰ܿ໢ˈขངಖိؠ׭වডد༮װຢሠ
቏ܿ୥ᄲ/ᄲȃ
ຍ֖ຕ
ขدૣٛ൰ངಖ༚ȃ
Setting Parameter
To enable the operation mode, press the M/and ɘuntil icon appears. When the thermostat
is turned off. Press M/to switch functions between, press or ɘto adjust the parameter. See
Table 2for the functions.
Calibration
Do not calibrate the T6000 Series thermostat in the field.
Troubleshooting
After a power outage, the thermostat mode and all settings return as most recently used or
set.
Repair and Replacement
Do not attempt to repair the T6000 Series thermostat. In case of an improperly functioning
control, contact the nearest Johnson Controls®representative, and specify the desired product
code number. When contacting the supplier for a replacement please state the type/model
number of the control located on the data plate or cover label.
Specifications
Refer to Product Catalog for Details.
Function / ࠀీ Icon / ཮ႚ
Cool Mode / ⏣⍤㯎ゼ
Heat Mode / ⑍䊚㯎ゼ
Fan only Mode / ⁲橻㣧
Unoccupied / 㢶󱀈/㞍󱀈㯎ゼ
֖ຕఁ
Function
ఐ嵑⇩
Factory
Setting
⑌努ࡤᅭ
Setting range
㗱㶼⓻㶼愙㔏 /
/Changeover
A C F: 皓C: 
嵫ⵇ㿖こᾷ柽⇩
Max.Temp setpoint
b 30 嵫ⵇ咰⢡
Setting Range 2盖49
嵫ⵇ㿖こᾸ柽⇩
Min.Temp setpoint
C 05 嵫ⵇ咰⢡
Setting Range 0盖47
⫞䛢捺◜
Restart when Power failure
d 0 0皒⌠枚OFF皓
1皒キ◜ON
ⷼ。㟫䫧
Screen Display
E 0 0皒 㟫䫧ⵑ⌲㿖こ Room Temp皓
1皒 㟫䫧嵫ⵇ㿖こ Setting Temp
㞍󱀈㯎ゼ〟宓䉦䑣ㆮ
Unoccupied Mode contact status
(Ὰ憯䛕※T6634-TA10-9JS0)
(Not available for T6634-TA10-9JS0)
F 1 0皒 〟宓䉦䦚㕒㞣ₐ娕㢶󱀈䑣ㆮ皓㝚キ㞣ₐ
娕㞍󱀈䑣ㆮ
Short connect contact for occupied
status, vice versa, unoccupied status
1皒 〟宓䉦㝚キ㞣ₐ娕㢶󱀈䑣ㆮ皓䦚㕒㞣ₐ
娕㞍󱀈䑣ㆮ
Short connect contact for unoccupied
status, vice versa occupied status
㞍󱀈㯎ゼ⏣⍤㿖こ
Unoccupied Temp Setpoint cooling
(Ὰ憯䛕※T6634-TA10-9JS0)
(Not available for T6634-TA10-9JS0)
g 2823盖30҉
㞍󱀈㯎ゼ⏣䊚㿖こ
Unoccupied Temp Setpoint heating
(Ὰ憯䛕※T6634-TA10-9JS0)
(Not available for T6634-TA10-9JS0)
H 1816盖23҉
厗⑕㏃㏸⑕㯎ゼ愙㔏
Auto/Manual changeover
(⁲憯䛕※T6634-TF20-9JS0)
(Only for T6634-TF20-9JS0)
I 0 0皒㏸⑕㯎ゼ愙㔏皓1皒厗⑕㯎ゼ愙㔏
0: Manual changeover; 1: Auto changeover

T6634-TA10҈TE20҈TF20-9JS0 Series Fan Coil Thermostat (ON/OFF) - Installation Instructions
T6634-TA10҈TE20҈TF20-9JS0亨⏄橻㣧䢅䵎㿖㕔⠕ (キ⌠⤸) -ⴶ婲嶡㞻
601V-B01A-NB Rev 2-Issue Date 09 2012 4
捺嬮:
T6000Ⴜளၫ૿ධቂᏮ኷ღݢᅼࠞ঩ധ࣏૿፟໪ቂȃܬT6000Ⴜளၫ૿ධݲ
Ꭷ፜໘ௌডࢽጊ໢૰೙ঐܷ፛เ኎ພࣷˈاٛཿ໘ঽඝྋിֻཿȃዓৠኁ߷
܈໚ˈ๜٢໪ቂ৭૿ঽ֫Ⴜ࿾Ȃݢᅼ֦૑࣋݃ˈ኷՗ᎧႼ࿾፩ȃହৠූۨ
ၫޡݲᎧ፜ܿ঩೙໘٢໘ᄌ໢֦ܿȃ
ᇋնၫ૿ධᎧ኷௷Ȃٰ໛ড቏໛නۃȃ໛නঐཿၫ૿ධȃ
ᇋն࠙๠෇࡜ܿPCB֊ᇧڵˈ۰෇࡜፩ն࠙๠ܿPCB֊ّᄛᇧڵ኶ჴ቏፣
֦࠵ႚȃ
໪ྈ቏ღ࠲࣭য়Ȃݓฏܬݓܿࣙށȃᇋ٫ࣰT6000Ⴜளၫ૿ධݢ௚
๒஢ȃ
崓◷:
኷ᄵݢධღ໢ฬ֦ݢኑި૑ȃ኷ܕݢ໢ஏࢌؠ૰೙ሞඩݢদˈ۰ߑܷ፛
เ኎།ພ່ፚཏ၁ȃ
ݢদ၌ნ
ՙጐ࣭য়Ȃݓฏܬݓܿࣙށࢍၫ૿ධݓȃݓ໘ᄌ૰೙ܷ፛ݢদเ኎ພ၁
່ፚཏ၁ȃ
ݢদ၌ნا႘ཿ
኷ၫ૿ධ࿳ݢ෇նၝ໪ቂܿღဂ֦ˈ໪ፇુኒȃใᇜࢋၝ໪ቂܿღဂၝ־
ુኒ֦૰೙ܷ፛اٛཿˈݢদเ኎ພ၁່ፚཏ၁ȃ
㺕㊼:
኷ྈᇵܿღၝ৹يፇ෇ˈᇋࢍႼ࿾࿳ݢȃޥ௸ডጸฬܿღ૰೙ܷ፛ົֻ
ሿઌᄹܿཿȃ
IMPORTANTǖ
Use this T6000 Series Line Voltage Fan Coil Thermostat only as an operating
control. Where failure of malfunction of the T6000 Series Thermostat could
lead to personal injury or property damage to the controlled equipment or other
property, additional precautions must be designed into the system. Incorporate
and maintain other devices such as supervisory or alarm systems or safety or
limit controls intended to warn of, or protect against, failure or malfunction of the
T6000 Series Thermostat.
Do not install this thermostat in condensing, wet, or damp environments. Moisture
may cause damage to the thermostat.
Do not remove PCB from the enclosure cover. Removing the PCB from the
enclosure cover voids the product warranty.
Make all wiring connections in accordance with local, nation, and regional
regulations. Do not exceed the T6000 Series thermostat's electrical ratings.
WARNING:
Disconnect power supply before making electrical connections. Contact with
components carrying hazardous voltages can cause electrical shock and may result
in severe personal injury or death.
Risk of Electrical Shock
Ground the thermostat according to local, national, and regional regulations.
Failure to ground the thermostat may result in electrical shock and severe personal
injury and death.
Risk of Electrical Shock and Property Damage
Insulate and secure each unused wire lead before applying power to the
thermostat. Failure to insulate and secure each unused wire lead may result
property damage, electrical shock, and severe personal injury or death.
CAUTION:
Do not apply power to the system before checking all wiring connections. Short
circuited or improperly connected wires may result in permanent damage to the
equipment.