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PN 20009722 REV F, [08/01/2020]

CAW INFRARED CONTROL SYSTEM - OPERATION

Table 5  - Microprocessor Controller Fault Indications For Infrared Control System

Timer/Alarm

LED — number

of flashes:

Fault Condition

Description

1

Room Air Sensor Fault

If room air sensor is disconnected, damaged or malfunctions Timer/

Alarm LED will flash one (1) time to signify that fault has occurred. 

Operation of heating and cooling stop. Fan will continue to operate.

2

Condensate Fault

If control senses condensate fault condition, either through 

condensate pumps safety switch or drain pan sensors, Timer/Alarm 

LED flashes two (2) times to signify fault has occurred.
Cooling switches off for minimum of three (3) minutes AND fault 

condition is corrected. After, as long as the thermostat is calling for 

cooling the water valve will open and cooling starts.

3

ID Coil Sensor Fault

Indoor coil sensor monitors temperature of indoor coil. If freeze 

condition is detected continuously for three (3) minutes, Timer/Alarm 

LED flashes three (3) times to signify fault has occurred.
Cooling switches off for minimum of three (3) minutes AND fault 

condition is corrected.
If microprocessor detects coil freeze condition four (4) times within 

24 hour period, clean filter indicator appears.

4

Clean Filter

To aid in filter maintenance, cassette controller indicates when 

schedule filter cleaning is required by flashing Timer/Alarm LED.

During normal operation microprocessor will keep track of unit’s run 

time.

When clean filter time has elapsed, Timer/Alarm LED flashes four (4) 

times to indicate filter needs to be cleaned. Clean filter time is can be 

selected through Configuration mode. Available settings are 250, 500, 

750, 1000, and 1250 hours.
In wall mounted thermostat mode, default time is 1000 hrs. This 

cannot be changed. If coil freeze condition is detected four (4) times 

within 24 hour period, Clean Filter Alarm will appear.

After filter maintenance has been performed, press Clear Filter 

Warning Button for three (3) seconds. Control responds with beep to 

indicate timer has been reset.

5

Test Mode

See Table 3, Page 25 for information.

 Auxiliary Freeze Protection for Chilled Water and Hot Water Coils.

CAW units are equipped with a secondary capillary type freeze sensor to guard against coil freeze up due to sub-freezing 

ducted fresh air or cold room ambient conditions.

The sensor is mounted on the supply side of the outer most coil of the CAW unit. Depending on the model selected the 

freeze sensor will either switch off the fan or energize heating mode should a freeze condition be detected. Once the 

freeze condition is alleviated the sensor will reset and the CAW unit will return to normal operation.

Содержание ComfortWave CAW Series

Страница 1: ...2201 Dwyer Avenue Utica NY 13501 Tel 800 253 7900 www ecrinternational com PN 240009722 REV F 08 01 2020 CAW FAN COIL CASSETTE AIR HANDLER Installation Operation and Maintenance Manual MODELS CAW 08...

Страница 2: ...UL 1995 Check our website frequently for updates www emiretroaire com Receiving Information 3 Important Safety Information 4 General Product Information 5 Dimensional Physical Data 6 Unit Mounting 9...

Страница 3: ...When calling for assistance please have following information ready Model Number_________________________ Serial Number_________________________ Date of installation______________________ Receiving I...

Страница 4: ...service this appliance Read this manual and understand all requirements before beginning installation Safety Information Have a qualified service agency install and service this appliance Turn off el...

Страница 5: ...harge locations use two non adjacent sides Fresh air intake capability with two knockout locations Four plastic air vanes motor driven with auto sweep or fixed position stop setting on models 18 36 Mo...

Страница 6: ...nal Discharge Knockouts 5 in Diameter 3 Available 2 Fresh Air Inlet Knockouts 1 x 2 in 2 Available 3 Condensate Discharge in Diameter 4 Chilled Water IN 5 8 in 5 Chilled Water OUT 5 8 in 6 Condensate...

Страница 7: ...1 Optional Discharge Knockouts 5 in Diameter 3 Available 2 Fresh Air Inlet Knockouts 1 x 2 in 2 Available 3 Condensate Discharge in Diameter 4 Chilled Water IN 7 8 in 5 Chilled Water OUT 7 8 in 6 Con...

Страница 8: ...3 1 5 7 7 4 5 8 FEATURES 1 Optional Discharge Knockouts 5 in Diameter 3 Available 2 Fresh Air Inlet Knockouts 1 x 2 in 2 Available 3 Condensate Discharge Inch Diameter 4 Chilled Water IN 7 8 in 5 Chi...

Страница 9: ...and damage return them to box until ready to install 7 Do not throw away two polystyrene blanking off pieces with packaging See Figure 6 Blanking Off Fascia discharge slot s need blanking off when su...

Страница 10: ...ocate wired wall mounted thermostat to ensure good temperature control Select installation position 1 Position thermostat approximately 5 ft 1 5 m above floor level 2 Avoid external walls and drafts f...

Страница 11: ...able 2 3 Prepare installation guides by folding metal bracket by hand along perforations See Figure 9 4 Lift cassette onto hanging rods 5 Level at correct distance from ceiling with aid of installatio...

Страница 12: ...rborne debris 4 Slope condensate pipe work downward from highest point in direction of water flow with minimum gradient of 1 in per 10 ft 8 mm per 1 m No uphill gradients except in first 18 in 460 mm...

Страница 13: ...ct knock outs are 5 in 133 mm round Fresh air knockouts are a 1 x 2 in 32 x 64 mm rectangular models 08 12 b 3 in 76 mm square models 18 36 2 Cut black insulation around knock out See Figure 15 3 Snip...

Страница 14: ...nnection on chassis Figure 19 Page 15 A Ensure polarized connector 2 position is in proper orientation and connected B Route wires to prevent them from becoming trapped cut broken or chaffed See Figur...

Страница 15: ...2 REV F 08 01 2020 FINAL ASSEMBLY Figure 19 Connect Vane Motor Plug Into Socket On Chassis Figure 20 Connect Infrared Control Cable Figure 21 Secure Fascia To Chassis Figure 22 Adjust Louver Position...

Страница 16: ...5 Connect electrical supply after completing water pipe work 6 Low voltage wiring must be at least 18 AWG Connect Wiring 1 Loosen four screws on front of control box cover Slide cover up and off to a...

Страница 17: ...with wiring diagram facing in after making all connections Secure with four screws Units rated 208 230 Vac primary side of transformer are factory wired for 230 Vac Change transformer tap from orange...

Страница 18: ...18 PN 20009722 REV F 08 01 2020 ELECTRICAL WIRING Figure 29 08 20 Transformer Figure 30 CAW 08 20 Transformer Mounting Figure 31 33 36 Transformer Figure 32 CAW 33 36 Transformer Mounting...

Страница 19: ...r verify thermostat is set to energize the fan with call for heating 1 Fan Operation Some thermostats are equipped with AUTO ON fan switch Placing switch ON will run the fan continuous Placing switch...

Страница 20: ...anel and fill drain pan See Figure 34 3 Adding water activates float switch and pump Water must flow regularly when condensate pump is energized If water does not check pipe slope or see if there are...

Страница 21: ...al only if switch 4 is set to YES enabling wall mounted remote thermostat operation 4 Set switches as desired for application Set Controller Configuration 1 See Figure 37 Page 26 and Pages 24 34 for o...

Страница 22: ...ature Observe three 3 minute minimum time off 8 Verify heating is operational Verify supply air is warmer than room air 9 Use IR hand held remote to enable auto changeover between heat cool Verify Con...

Страница 23: ...W INFRARED CONTROL SYSTEM OVERVIEW WARNING Electrical shock hazard Verify all power is off before removing control box cover Failure to follow these instructions could result in death or serious injur...

Страница 24: ...speed LOW 4 Select infrared handheld controller or wall mounted thermostat control YES Disables infrared hand controller and enables wall mounted thermostat operation Enables dip switches 3 and 2 Cle...

Страница 25: ...25 PN 20009722 REV F 08 01 2020 CAW INFRARED CONTROL SYSTEM OVERVIEW Figure 37 CAW Infrared Hand Held Control...

Страница 26: ...26 PN 20009722 REV F 08 01 2020 CAW INFRARED CONTROL SYSTEM SETTINGS Figure 38 Configuration Settings CAW...

Страница 27: ...able 4 Page 30 to record settings Day of week Mon Tue Wed Thu Fri Sat Sun Louver is closed when fan is off Period of day Morning Day Evening Night Periods provide four time settings to initiate change...

Страница 28: ...28 PN 20009722 REV F 08 01 2020 CAW INFRARED CONTROL SYSTEM SETTINGS Table 4 CAW Microprocessor Controller Dip Switch Settings...

Страница 29: ...oom lighting Hibernate Mode When IR hand held remote enters hibernate mode display goes dark if no activity on IR hand held remote for ten minutes Pressing any button awakens IR hand held remote while...

Страница 30: ...e Fan Operation see Page 30 Dry Mode Dry mode removes humidity from air while maintaining specific setpoint temperature This is done by cycling cooling mode Dry mode will NOT maintain specific humidit...

Страница 31: ...for a Day of week b Period of day C Hour d Minute e Cooling setpoint temperature f Heating setpoint temperature g Auto setpoint temperature Quick Copy CAW INFRARED CONTROL SYSTEM OPERATION Quick Copy...

Страница 32: ...rm LED During normal operation microprocessor keeps track of unit s run time When clean filter time has elapsed Timer Alarm LED flashes four times to indicate filter needs to be cleaned Clean filter t...

Страница 33: ...r appears 4 Clean Filter To aid in filter maintenance cassette controller indicates when schedule filter cleaning is required by flashing Timer Alarm LED During normal operation microprocessor will ke...

Страница 34: ...to clear retaining clips See Figure 41 C Lift filter off grille Place filter on flat surface and vacuum any dust and debris Vacuum all filters and grills Vacuum any accessible unit parts See Figure 42...

Страница 35: ...ling 24Vac is measured across terminals Y and C of water valve Y1 and C of cassette While wall thermostat is calling for cooling or heating and anti short cycle timer delay has elapsed 24Vac can be me...

Страница 36: ...interconnecting wires Terminal W is required for units with electric or hot water heat only Cassette controller will switch chilled water valve on and off through yellow Y low voltage terminal and ho...

Страница 37: ...240 50 1 0 55 1 8 0 6 198 0 7 15 CAW 18 20 220 240 50 1 0 55 1 8 3 2 13 06 14 2 198 17 7 20 CAW 33 36 220 240 50 1 0 5 0 5 1 10 1 10 1 0 198 1 2 15 CAW 33 36 220 240 50 1 0 5 0 5 1 10 1 10 5 4 22 7 23...

Страница 38: ...3 0 6 9 000 9 000 1 8 0 4 650 75 15 900 14 300 3 2 1 0 10 700 10 700 2 1 0 5 80 24 000 17 700 4 8 2 5 18 000 15 100 3 6 1 3 MERV 8 72 9 500 9 000 1 9 0 4 7 800 7 400 1 79 0 5 460 75 11 000 9 900 2 2...

Страница 39: ...L DATA CONNECTIONS 08 12 18 20 30 36 CHILLED WATER INLET in 5 8 7 8 7 8 CHILLED WATER OUTLET in 5 8 7 8 7 8 CONDENSATE in 1 2 1 2 1 2 BRANCH DUCT DIAMETER in 5 5 6 FRESH AIR DUCT DIAMETER in 3 3 3 FIL...

Страница 40: ...All specifications subject to change without notice 2020 ECR International Inc 2201 Dwyer Avenue Utica NY 13501 Tel 800 253 7900 www ecrinternational com BDR THERMEA GROUP...

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