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Page 77

© 2011 McQuay International

800-432-1342

 www.mcquay.com

IM 831 - Thermostat Conversion Kit

Safety Information

Introduction 

This thermostat conversion kit number 107345245 converts a 
fan coil unit thermostat to a thermostat without a 3-speed 
switch. The thermostat kit includes a cover that does NOT 
have an opening for the 3-speed control switch. The following 
is the proper procedure to convert the thermostat. 

Procedure 

1

Carry out this procedure before mounting the thermostat 

or applying power to it. If the thermostat is already 
mounted, turn off all power to it before proceeding. 

2

Slide the FAN switch on the front of the thermostat to the 
setting at which you want the motor to run all the time.

Note: 

Once you exchange thermostat covers, the user can no 
longer change this setting.

3

Remove the cover from the thermostat by gently prying 
behind the left hand edge of the cover with a small 
screwdriver, then pulling it off as shown in 

Figure 1

 and 

Figure 2

.

4

Adjust the dip switch and jumpers to your desired 
configuration (see thermostat installation manual).

5

Pull off the fan slide switch cap (

Figure 3

).

Note: 

Be careful not to change the position of the switch you 
set in Step 2.

6

Place the new thermostat cover that does not have the 3-
speed switch opening on the thermostat (

Figure 4

).

Figure 1: Pry behind left hand edge of cover to remove

Figure 2: Pull left end of cover away until tabs at right end 
are cleared

Installation and Maintenance Manual

IM 831

Thermostat Conversion Kit

Group: 

Applied Air Systems

Part Number: 667757200

Date: May 2006

WARNING

The installation of this equipment shall be in accordance with 
the regulations of authorities having jurisdiction and all 
applicable codes. It is the responsibility of the installer to 
determine and follow the applicable codes. This equipment is to 
be installed only by an experienced installation company which 
employs trained personnel.

WARNING

Rigorously adhere to field wiring procedures regarding proper 
lockout and tagout of components.

WARNING

To avoid electrical shock, personal injury or death:

1. Installer must be qualified, experienced technician.

2. Disconnect power supply before installation to prevent 

electrical shock and damage to equipment.

CAUTION

If the FAN Switch remains in the left-most (Off) position the thermostat 
will NOT function properly.

Содержание FCVC

Страница 1: ...Manual IM 980 1 ThinLine 3G Vertical Fan Coils Type FCVC FCVH FCVS and FCWC Vertical Design Group Applied Air Systems Part Number 910102984 Date May 2011 2011 McQuay International 200 to 1200 cfm IM...

Страница 2: ...4 Cabinet Rear Extension Kit 41 Installation Instructions 41 IM 1021 Key Lock Access Door Kit 43 IM 1014 MTA B 155 Electronic Thermostats 45 Installation 45 Thermostat Operation 45 Ratings 46 Wire Lea...

Страница 3: ...includes a 24 volt AC transformer and interface terminal strips No Controls with pigtail connections to the unit s fan motor wiring harness Figure 1 Nomenclature see Table 1 page 29 for complete mode...

Страница 4: ...arked on submittal drawings 6 An installing contractor may find it beneficial to confer with piping sheet metal and electrical foremen before installing any unit Note Check the unit data plate for cor...

Страница 5: ...aking sharp turns when making duct turns and transitions Use proportional splits turning vanes and air scoops when necessary 3 When possible construct and orient supply ductwork turns in the same dire...

Страница 6: ...M included with the damper for more information 6 Position the chassis subbase against the wall where the unit is to be installed Make sure that the area under the unit is free of combustible material...

Страница 7: ...ng of end compartments and or moisture dripping 5 The piping to and from the unit must be protected from outside air and freeze conditions It must be suitably insulated for condensation and for heat l...

Страница 8: ...pan Field Installed Valve Piping Review General Guidelines page 7 before beginning Then carry out the following steps to install valves and piping 1 For units equipped with a secondary coil make sure...

Страница 9: ...at a second set is required including a changeover switch or sensor Figure 10 Changeover switch sensor attachment If the unit does not have a factory installed valve piping package the changeover swit...

Страница 10: ...d condensation McQuay recommends field insulation in the following areas to prevent potential condensate problems Supply and return water piping connections Condensate drain lines and connections Fres...

Страница 11: ...ure component failure Thermostat and Controls Initial Startup Cleaning Flushing the Water System 1 Prior to first operation of any unit clean and flush the water circulating system of all construction...

Страница 12: ...cient protection against extremes in temperature and or humidity and equipment performance reliability and service life may be adversely affected Venting Hydronic Coils Hydronic coils require a vent e...

Страница 13: ...tion motorized fresh air damper when supplied is opened Thermostat Cycles the valve s open or closed on demand based on occupant desired level Changeover Switch With a manual switch the user selects w...

Страница 14: ...ers with Digital Display For more details refer to page 51 55 or 59 Series MT158 and MT168 microprocessor based thermostat controllers combine a proportional integral control algorithm with adaptive l...

Страница 15: ...A return air sensor A pipe temperature sensor for changeover from heating to cooling on two pipe systems A factory wired and installed transformer See Figure 18 for a list of connecting points to the...

Страница 16: ...the fresh air damper kit The damper kit must be ordered separately For detailed installation instructions refer to page 39 which is supplied with the damper motor kit Under most control schemes the d...

Страница 17: ...es The first resets automatically when the over temperature condition no longer exists The second backup switch must be reset manually Note The need to reset the manual switch may indicate that there...

Страница 18: ...Filters can be removed without removing any panels See Figure 27 However if the unit is equipped with a return air grille this must first be removed to access the filter To remove the filter 1 Slide...

Страница 19: ...the main condensate drain line out of the side of the chassis where it flows into the secondary drain pan 5 Disconnect the fan motor wiring harness by removing the plug where it attaches to the connec...

Страница 20: ...0 9 x 6 30 0x2 2x15 2 17 3 x 0 9 x 6 43 9x2 2x15 2 22 8 x 0 9 x 6 57 9x2 2x15 2 33 8 x 0 9 x 6 85 9x2 2x15 2 39 3 x 0 9 x 6 99 8x2 2x15 2 50 2 x 0 9 x 6 127 6x2 2x15 2 61 3 x 0 9 x 6 155 7x2 2x15 2 Vo...

Страница 21: ...424 GG 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 Preheat Coil Water Return CC 18 7 475 18 7 475 18 7 475 18 7 475 18 7 475 18 7 475 18 7 475 HH 1 2 30 1 2 30 1 2 30 1 2 30 1 2 30 1 2 30...

Страница 22: ...16 7 424 16 7 424 16 7 424 GG 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 Preheat Coil Water Return CC 18 7 475 18 7 475 18 7 475 18 7 475 18 7 475 18 7 475 18 7 475 HH 1 2 30 1 2 30 1 2 3...

Страница 23: ...1 1 28 1 1 28 1 1 28 1 1 28 1 1 28 1 1 28 Primary Coil Water Supply BB 16 7 424 16 7 424 16 7 424 16 7 424 16 7 424 16 7 424 16 7 424 GG 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 Prehea...

Страница 24: ...28 1 1 28 1 1 28 1 1 28 1 1 28 1 1 28 Primary Coil Water Supply BB 16 7 424 16 7 424 16 7 424 16 7 424 16 7 424 16 7 424 16 7 424 GG 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 7 8 198 Preheat Co...

Страница 25: ...m 1 7 43 mm 2 8 71 mm 3 4 86 mm 1 4 36 mm 4 9 124 mm 5 5 140 mm End View Preheat Coil Piping Return Supply End View Primary Coil Piping Front View 4 Pipe Right Hand with Opposite End Preheat y p g 4 9...

Страница 26: ...ay IM 980 1 Wiring Diagrams Wiring Diagrams Figure 35 Fan Coil Wiring Diagram Typical with solid state thermostat Note All field installed conductors should have an insulation rating of 300 volts or g...

Страница 27: ...y IM 980 1 27 Wiring Diagrams Figure 36 Fan Coil Wiring Diagram Typical with unit mounted three speed fan switch Note All field installed conductors should have an insulation rating of 300 volts or gr...

Страница 28: ...IM 980 1 Wiring Diagrams Figure 37 Fan Coil Wiring Diagram Typical with electric heat and low voltage interface board Note All field installed conductors should have an insulation rating of 300 volts...

Страница 29: ...Primary Coil Type C chilled water only W CW HW 2 pipe H hot water only S steam 12 Primary Coil Rows 2 2 row 3 3 row 4 4 row 13 Primary Coil Fins Per Inch 12 12 fins per inch 14 Primary Coil Connectio...

Страница 30: ...5 kW Electric Heat 030 3 0 kW Electric Heat 040 4 0 kW Electric Heat 050 5 0 kW Electric Heat 060 6 0 kW Electric Heat 000 None 30 Not currently used YY none 31 Drain Pan Material P plastic non corro...

Страница 31: ...med high remote mounted SPU SCR off proportional unit mounted SPR SCR off proportional remote mounted 47 Timed Override Y none 48 Valve Primary Coil See Table 4 49 Valve Preheat Coil See Table 4 50 Va...

Страница 32: ...Length 08 8 inch Extended Length 69 Subbase 30F 3 subbase with leveling feet 30Y 3 subbase without leveling feet XXF special with leveling feet XXY special without leveling feet YYY none 70 Discharge...

Страница 33: ...Extended Warranty Y none standard warranty 1 1 year Extended component warranty 30 month from shipment or 24 month from installation 2 2 year Extended component warranty 42 month from shipment or 36 m...

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Страница 35: ...to the front of the chassis as shown Secure the short panel with four of the retained screws two on either side see Figure 2 Installation and Maintenance Manual IM 1121 ThinLine 3G Hideaway Unit Disch...

Страница 36: ...Figure 1 Removing the Discharge Duct Collar and Front Block off Plate Figure 2 Attaching the Top Block Off Plate and Short Front Panel Front Block Off Plate Discharge Duct Collar Short Front Panel To...

Страница 37: ...ning in Unit Base 3 Slide the damper box in place against the screen matching the dimples on the bottom of the damper box to the slots on the unit base see Figure 2 Figure 2 Slide the Damper Against t...

Страница 38: ...is See Figure 5 Figure 5 Adjusting Damper Tension Cold Weather Operation Fan coils may experience erratic operation during cold ambient conditions with the outside air damper in the open position To o...

Страница 39: ...ocate all damper motor kit components and remove from carton See Figure 1 for a component list Figure 1 Damper Motor Kit Assembly Right Hand Kit Shown Installation and Maintenance Manual IM 1028 Fresh...

Страница 40: ...tor bracket to the chassis using the 10 x 1 2 sheet metal screws Note This is for preliminary positioning of the control rod 11 Now position the rod so that the set screws on both the damper coupling...

Страница 41: ...nance Manual IM 1024 Cabinet Rear Extension Kit for ThinLine 3G Vertical Fan Coils and Unit Heaters Group Applied Air Systems Part Number 910102148 Date August 2009 NOTICE Installation and maintenance...

Страница 42: ...Attach the Subbase Extensions to the left and right subbases on the unit using 4 screws b Attach the Left and Right Chassis Support Panels to the left and right coil panels on the fan coil unit using...

Страница 43: ...2 drill bit Then separate the door from the hinge bracket Figure 2 Remove Old Door from Bracket 4 Attach the locking mechanism to the tamper proof control door See Figure 3 5 Attach the new tamperproo...

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Страница 45: ...position heating and cooling outputs are off Units with a two position system switch or without a system switch must use a load transfer switch when both heating and cooling outputs are used This prev...

Страница 46: ...fan relay must be used 7 Observe electrical ratings Thermostatic outputs are pilot duty only Wiring Diagrams Figure 2 Units with remote sensing capability Figure 3 Units with switches used for local...

Страница 47: ...inal on Low Voltage Interface Board terminal C Connect a wire from thermostat terminal TB2 1 24VAC to the 24 V terminal connection R Connect fan speed wires from the thermostat to appropriate Low Volt...

Страница 48: ...sensor 24VA XFMR LINE VOLTAGE Clg 24vac valve actuators with quick connects t Htg 24vac valve actuators with quick connects Hi Med Lo Fan motor control Room air or return air temperature sensor Clg 24...

Страница 49: ...stalling valve packages Solder the appropriate inlet and outlet CW pipe connections from the valve package to the coil connections Solder the appropriate inlet and outlet HW pipe connections from the...

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Страница 51: ...e operation Adjust the thermostat as necessary to complete at least one cycle Be sure the thermostat and all other equipment are functioning correctly DANGER READ THESE INSTRUCTIONS CAREFULLY BEFORE A...

Страница 52: ...set point becomes effective and the display of the room temperature resumes Setback Operation Connection of the Setback Input to 24 VAC 1 will force the control into unoccupied mode see wiring diagram...

Страница 53: ...operation and in the main duct system for forced air operation 3 The set point and operating mode will be retained on a loss of power 4 When using either a remote probe or pipe sensor run wiring away...

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Страница 55: ...ial fire and or explosion do not use in potentially flammable or explosive atmospheres Retain these instructions for future reference You must review your application and national and local codes to e...

Страница 56: ...tat operates as a heating only thermostat The cooling outputs are disabled If constructed without a mode button the thermostat operates in Auto mode subject to configuration of the 2 4 pipe jumper and...

Страница 57: ...ct 1 to 5 by pressing the mode button or by pressing the UP and DOWN arrows simultaneously Adjust Value Use UP or DOWN arrow Table 3 Service Menu Functions Figure 3 Circuit Board Jumpers Table 4 Circu...

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Страница 59: ...TO INSTALL OPERATE OR SERVICE THIS THERMOSTAT Failure to observe safety information and comply with instructions could result in PERSONAL INJURY DEATH AND OR PROPERTY DAMAGE To avoid electrical shock...

Страница 60: ...ol 0 10 VDC 4 0 mA valves These units may include a fan switch with one or more fan speed selections Mode Button Operation OFF All thermostat outputs are off fan is still operational if connected to a...

Страница 61: ...row Table 4 Service Functions Switch Closed On Open Off 1 Not Used Not Used 2 Staged Heat 3 F Diff Term 13 Aux Heat No Diff Term 13 3 F Display C Display 4 Main Sec Outputs 0 10 VOC Term 10 11 require...

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Страница 63: ...www mcquay com US IM 846 MT 170 Thermostats Installation and Maintenance Manual IM 846 T170 Thermostat Group Fan Coil Part Number 910102993 Date July 2006 24 VAC 120 277 VAC 3 Speed Fan Control Conti...

Страница 64: ...1 5 F C Button Operation TB170 001 5 Verifying Thermostat Operation 5 Thermostat Menu Functions 6 Menu Function Access 6 Menu Functions 6 Condensate Overflow Interrupt 6 Fan Operation 7 Standard Fan C...

Страница 65: ...mbly from its base to gain access to the circuit board Figure 2 Figure 2 Circuit board WARNING BEFORE ATTEMPTING TO INSTALL OPERATE OR SERVICE THIS THERMOSTAT CAREFULLY READ THESE INSTRUCTIONS Failure...

Страница 66: ...apped into the cover and is not dislodged 10 Install the cover assembly to the base pressing firmly to engage the cover locking snaps CAUTION Before applying power the voltage selection switch must be...

Страница 67: ...utton Figure 4 to control operation of the fan In the ON position the fan output operates continuously In the AUTO position the output cycles with demand In the OFF position all outputs are off Note M...

Страница 68: ...crease the value press the up or down arrow button 6 Set back heat When this function is selected the current temperature range adjustment the SET BACK icon and the HEAT icon appear To increase or dec...

Страница 69: ...uration may be provided for minimum heating and cooling requirements Using this configuration the HEAT and COOL outputs are automatically cycled on at the heat setback limit Your thermostat may not ha...

Страница 70: ...r purge cycle operation is as follows 1 The thermostat has a call for heat or cooling Note If at any time the call goes away the thermostat stops the purge cycle 2 The thermostat checks the pipe senso...

Страница 71: ...for use with the SB200 001 sensor Operation In an occupied mode the thermostat operates normally and looks for a door open signal When the door opens the thermostat waits for a door close signal If th...

Страница 72: ...Page 72 McQuay IM 846 Optional Occupancy Detection Equipment Operation Figure 10 Optional equipment configuration 1...

Страница 73: ...oved to allow setback input Note An optional door and or window switch Figure 11 and slave sensor can be added for use with the SD200 001 sensor Operation In an occupied mode the SD200 001 occupancy s...

Страница 74: ...occupancy status as well as selectable high low temperature setback form C output and a five minute door open HVAC shut off This system provides basic room setback and is ideal for control of HVAC in...

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Страница 76: ...training or call 540 248 9646 and ask for the Training Department Warranty All McQuay equipment is sold pursuant to its standard terms and conditions of sale including Limited Product Warranty Consul...

Страница 77: ...manual 5 Pull off the fan slide switch cap Figure 3 Note Be careful not to change the position of the switch you set in Step 2 6 Place the new thermostat cover that does not have the 3 speed switch op...

Страница 78: ...2011 McQuay International 800 432 1342 www mcquay com IM 831 Page 78 Figure 3 Remove plastic fan slide switch cap Figure 4 Thermostat cover without 3 speed switch opening...

Страница 79: ...ommon C connected to valve valve cycle or to the yellow wire of the speed switch fan cycle Terminal No 2 has a red wire and is normally open N O Connected to the heating red wire of the thermostat Ter...

Страница 80: ...5 90 30 25 061361801 Changeover Range 65 F to 95 F 18 C to 35 C Maximum Operating Temperature Limits 220 F Fluid Temperature 125 F Ambient 104 C Fluid Temperature 52 C Ambient Agency Approval UL List...

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Страница 82: ...on training or call 540 248 9646 and ask for the Training Department Warranty All McQuay equipment is sold pursuant to its standard terms and conditions of sale including Limited Product Warranty Con...

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