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Cambridge Air Solutions S Series Technical Manual

Direct gas-fired industrial blow-thru space heater
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INDUSTRIAL BLOW-THRU
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, injury or death. Read the installation, operating, and maintenance instructions
thoroughly before installing or servicing this equipment.
The use and storage of gasoline or other flammable vapors and liquids in open containers
in the vicinity of this appliance is hazardous.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
Made in the USA
S-SERIES
DIRECT GAS-FIRED
TECHNICAL MANUAL
mWARNING:
FOR YOUR SAFETY
SPACE HEATER
®
ASHRAE
ASHRAE
COMPLIANT
COMPLIANT
®
90.1
®
S-TM8-0120

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Summary of Contents for Cambridge Air Solutions S Series

  • Page 1 S-SERIES DIRECT GAS-FIRED INDUSTRIAL BLOW-THRU SPACE HEATER ® TECHNICAL MANUAL mWARNING: Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death. Read the installation, operating, and maintenance instructions thoroughly before installing or servicing this equipment. FOR YOUR SAFETY The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous.
  • Page 2 ® TECHNICAL MANUAL LIMITED WARRANTY Cambridge Air Solutions' Limited Warranty is included within the Terms and Conditions that are sent with every Order Acknowledgement. For questions regarding Limited Warranty, contact Cambridge Air Solutions' Customer Service Group at 1-800-473-4569. Cambridge Air Solutions 760 Long Road Crossing Dr.

  • Page 3: Table Of Contents

    CONTENTS Vertical Inlet Skirt ........46 Hazard Summary ..........2 Typical System Overview ........3 Rain Hood Inlet Skirt ......47 Accessory Identification ......3 Unit Inlet Skirt .........48 Heater Operation ........5 Gas Piping ..........49 Heater Configuration ........5 Electrical Wiring ........50 Remote Control Station and Temperature Installation Instructions ........6 Sensor Locations ........51 Uncrating Instructions ........6 Thermistor Sensor ........53...

  • Page 4: Hazard Summary

    (e.g. when the heater is providing the make- Central Time, Monday through Friday. up air to a boiler room), the unit is to be interlocked to open inlet air dampers or other such devices. Cambridge Air Solutions S-Series Technical Manual...

  • Page 5: Typical System Overview

    Discharge Duct Directional Elbows Downturn Filter Section Inlet Duct UNIT Inlet Elbow Inlet Plenum RH-TW Inlet Skirt-Rain Hood Inlet Skirt-Unit Mounting Curb Motorized Discharge Damper Mounting Rail RH-RT Rain Hood-Roof Top RH-TW Rain Hood-Thru Wall S-Series Technical Manual Cambridge Air Solutions...
  • Page 6 UPTURN RAINHOOD SECTION HORIZONTAL FILTER MOUNTING SECTION STAND SUPPORT DOWNTURN DOWNTURN DUCT EXTENSION DOWNTURN DIRECTIONAL ELBOWS WALL DOWNTURN SLEEVE STRUCTURAL DIRECTIONAL FILTER ELBOWS SECTION STRUCTURAL RAINHOOD INLET ELBOW RAINHOOD ADJUSTABLE EXTENSION STAND ADJUSTABLE STAND Cambridge Air Solutions S-Series Technical Manual...

  • Page 7: Heater Operation

    DAMPER BLADES ELECTRICAL CONTROL ENCLOSURE HINGED ACCESS DOOR PORT FOR MEASURING MANIFOLD PRESSURE MODULATING GAS VALVE SAFETY SHUT-OFF VALVE LEAK TEST PORT SHUT-OFF VALVE DISCHARGE AIR TEMPERATURE SAMPLING BOX REGULATOR MANUAL SHUT-OFF VALVE BURNER VIEWPORT S-Series Technical Manual Cambridge Air Solutions...

  • Page 8: Installation Instructions

    Ensure the heater inlet and outlet are not blocked or severely restricted in any way that would affect the rated airflow through the heater or affect the desired air distribution pattern of the heater. Cambridge Air Solutions S-Series Technical Manual...

  • Page 9: Roof Top Mounting - Curb / Stand / Rail

    CURB SECTION 2 X 6 TREATED LUMBER FLASHING 2 x 2 WOOD NAILER (PROVIDED) INSULATION Model S400/S800 65½” 33¼” 25 3/8” S950/S1200/S1600 78 5/8” 33¼” 42” S1850/S2200/S3200 90¼” 36¼” 47 1/8” 2.5" 1 5/8" S-Series Technical Manual Cambridge Air Solutions...

  • Page 10: Roof Top / Thru Wall Mounting - Stand / Rail

    2 X 6 TREATED LUMBER S950/S1200/S1600 69 7/8” 33¼” 42” S1850/S2200/S3200 75¾” 36¾ ” 47 1/8” UNDER ROOF MOUNTING - CURB CURB SECTION CURB 24" REF. 2 x 2 WOOD NAILER (PROVIDED) INSULATION 2.5" 1 5/8" ROOF INSULATION Cambridge Air Solutions S-Series Technical Manual...

  • Page 11: Roof Top Mounting

    The roof curb and mounting rail(s) should be Roof Opening* Model Weight S400/S800 550 lbs. 13” 24¾” S950/S1200/S1600 800 lbs. 15” 41½” S1850/S2200/S3200 1500 lbs. 24¼” 46½” S-Series Technical Manual Cambridge Air Solutions...
  • Page 12 TREATED LUMBER (THICKNESS OF ROOF INSULATION) AS REQUIRED UNDER MOUNTING STANDS AND CURB TO SECURE AND LEVEL THE UNIT AND TO SPREAD THE LOAD. (BY OTHERS) * Dimensions allow for ¾” clearance on each side Cambridge Air Solutions S-Series Technical Manual...

  • Page 13: Thru Wall Mounting

    4 (6*) 3/8” dia. 69 7/8” 33¼” 43 7/8” 29” 42¼” S1850/S2200/S3200 1500 lbs. 4 (6*) 1/2” dia. 75¾” 36¾” 48 7/8” 38¾” 47¼” *For optional filter section ** Dimensions allow for 1” clearance on each side S-Series Technical Manual Cambridge Air Solutions...
  • Page 14 HANGING ROD WASHER WASHER WASHER DOUBLE LOCK NUTS WASHER DOUBLE LOCK NUTS SHIPPING POSITION HANGING RODS, NUTS AND WASHERS BY OTHERS L BRACKET C BRACKET FOR S400 - S800 UNITS FOR S950 - S3200 UNITS Cambridge Air Solutions S-Series Technical Manual...

  • Page 15: Roof Top / Thru Wall Mounting

    24” off the roof surface in areas where snow accumulation could elbows. impact heater operations Wall Opening* Model Weight S400/S800 550 lbs. 16” 28¼” S950/S1200/S1600 800 lbs. 18” 45” S1850/S2200/S3200 1500 lbs. 27½” 50” S-Series Technical Manual Cambridge Air Solutions...
  • Page 16 (APPLICABLE TO SOME FM AND XL GAPS OPTIONS) STAND DETAIL 2 X 6 TREATED LUMBER 10½" (BY OTHERS) 12" 2 X 4 TREATED LUMBER (PROVIDED) TREATED LUMBER (BY OTHERS) * Dimensions allow for 1½” clearance on each side Cambridge Air Solutions S-Series Technical Manual...

  • Page 17: Under Roof Mounting

    4 (6*) 3/8” dia. 69 7/8” 33¼” 43 7/8” 30” 41¼” S1850/S2200/S3200 1500 lbs. 4 (6*) 1/2” dia. 75¾” 36¾” 48 7/8” 37¼” 46¾” *For optional filter section ** Dimensions allow for ¾” clearance on each side S-Series Technical Manual Cambridge Air Solutions...
  • Page 18 HANGING ROD WASHER WASHER DOUBLE LOCK NUTS WASHER DOUBLE LOCK NUTS SHIPPING POSITION HANGING RODS, NUTS AND WASHERS BY OTHERS L BRACKET C BRACKET FOR S400 - S800 UNITS FOR S950 - S3200 UNITS Cambridge Air Solutions S-Series Technical Manual...

  • Page 19: Vertical Indoor Mounting

    Qty. Size S400/S800 650 lbs. 3/8” dia. 23 3/8” 27 7/8” 26” 25½” S950/S1200/S1600 950 lbs. 3/8” dia. 26” 43 7/8” 29” 42¼” S1850/S2200/S3200 1750 lbs. 1/2” dia. 34 7/8” 48 7/8” 38¾” 47¼” S-Series Technical Manual Cambridge Air Solutions...
  • Page 20 WASHER DOUBLE LOCK NUTS DOUBLE LOCK NUTS MOUNTING POSITION MOUNTING POSITION C BRACKET L BRACKET FOR S950 - S3200 UNITS FOR S400 - S800 UNITS * Dimensions allow for 1” clearance on each side Cambridge Air Solutions S-Series Technical Manual...

  • Page 21: Vertical Outdoor Mounting

    (dents and/or scratches) when the heater is being lifted into posi- tion. 6. Secure the heater in place with contractor supplied hardware. * Dimensions allow for 1½” clearance on each side S-Series Technical Manual Cambridge Air Solutions...
  • Page 22 BASE OF HEATER FILTER SECTION (OPTIONAL) INLET SKIRT (FIELD ASSEMBLED) CHANNEL SUPPORT (BY OTHERS) MOUNTING DETAIL SECURE STRUCTURAL CHANNEL TO WALL (AS REQUIRED) (BY OTHERS) DOWNTURN BUILDING WALL BUILDING FOOTING Cambridge Air Solutions S-Series Technical Manual...

  • Page 23: Vertical S-Series Structural Inlet Elbow

    The elbow is insulated to prevent condensation and reduce noise levels. Model Weight S400/S800 150 lbs. 27 1/2” 25 3/8” 25 3/8” S950/S1200/S1600 205 lbs. 30 3/4” 28” 42” S1850/S2200/S3200 300 lbs. 40 3/8” 37 3/8” 47 1/8” S-Series Technical Manual Cambridge Air Solutions...
  • Page 24 Structural inlet elbow inlet skirt if applicable. 4. If not already attached, secure elbow to discharge of heater using provided heater mounting brackets. 5. Position heater with attached accessories upright and lift into place. Cambridge Air Solutions S-Series Technical Manual...
  • Page 25 Heater Heater bracket bracket bracket Bolts Bolts Bolts Lock washers Lock washers Structural inlet elbow Lock washers Structural inlet elbow Structural inlet elbow 4. Continue attaching discharge accessories with provided mounting brackets as needed. S-Series Technical Manual Cambridge Air Solutions...
  • Page 26 Anchor lock nut Anchor lock nut bracket Washer bracket Anchor lock nut Washer Installed anchor Anchor lock nut Washer Installed anchor Washer Installed anchor Installed anchor Cambridge Air Solutions S-Series Technical Manual...

  • Page 27: Vertical S-Series Structural Non-Adjustable Elbow

    Non-adjustable elbows are insulated to help mitigate noise and thermal losses. Model Weight S400/S800 45 lbs. 13” 25 3/8” 25 3/8” S950/S1200/S1600 75 lbs. 15” 28” 42” S1850/S2200/S3200 130 lbs. 24 5/8” 37 1/2” 47” Airflow Airflow S-Series Technical Manual Cambridge Air Solutions...
  • Page 28 6. Seal all seams between heater and accessories ment plates ment plates ment plates using appropriate contractor grade caulk to mitigate ment plates potential water ingestion and pressure loss. ment plates Heater Heater Heater Heater Cambridge Air Solutions S-Series Technical Manual Heater...

  • Page 29: Vertical S-Series Adjustable Stand

    176 lbs. 25 1/2” 25 1/2” 16 3/4” 16 3/4” 19 7/8” 19 7/8” S800 S950/ S1200/ 196 lbs. 28” 42” 19 1/2” 33 1/2” 36 1/2” 22 1/2” S1600 S1850/ S2200/ 222 lbs. 37 1/2” 47” 28 7/8” 38 1/2” 41 5/8” 32” S3200 S-Series Technical Manual Cambridge Air Solutions...
  • Page 30 Height Height label adjustment 6. Install outdoor rated wedge anchors, minimum Height Height label adjustment bolt (2/leg) 0.5”x6” (not provided), as recommended by adjustment bolt (2/leg) manufacturer into concrete slab/sonotubes where bolt (2/leg) marked. Cambridge Air Solutions S-Series Technical Manual...
  • Page 31 10. If provided, assemble angled inlet skirt pieces and attach to stand using self-drilling screws (not provided). Attach close-off panel to stand and skirt on side nearest wall using self-drilling screws (not provided). Self-drilling screws Self-drilling screws Inlet skirt Inlet skirt Skirt close-off panel Skirt close-off panel S-Series Technical Manual Cambridge Air Solutions...

  • Page 32: Vertical S-Series 3', 4', &5' Duct Extensions

    28 1/8” 42” 5’ 200 lbs. 60” 28 1/8” 42” 3’ 140 lbs. 36” 37 1/2” 47 1/8” S1850/S2200/S3200 4’ 200 lbs. 48” 37 1/2” 47 1/8” 5’ 240 lbs. 60” 37 1/2” 47 1/8” Cambridge Air Solutions S-Series Technical Manual...
  • Page 33 Duct extension Duct extension Duct extension Bolts bracket bracket bracket Lock washers bracket Bolts Heater Bolts Bolts Lock washers Lock washers Lock washers bracket bracket Heater bracket Heater Heater S-Series Technical Manual Cambridge Air Solutions...

  • Page 34: Vertical S-Series Adjustable Elbow

    Model Weight S400/S800 55 lbs. 20 1/2” 25 1/2” 25 1/2” S950/S1200/S1600 85 lbs. 22 5/8” 28 1/4” 42 1/4” S1850/S2200/S3200 140 lbs. 32 1/4” 37 5/8” 47 1/4” Cambridge Air Solutions S-Series Technical Manual...
  • Page 35 Elbow 5. Seal all seams between accessories using appropriate Duct extension contractor grade caulk to mitigate potential water ingestion and pressure loss. plates plates S-Series Technical Manual Cambridge Air Solutions Retaining Clip Adjustable Elbow...

  • Page 36: Vertical S-Series Structural Filter Section

    25 3/8” 28” 42” S1850/S2200/S3200 235 lbs. 30 3/8” 37 1/8” 47” Filters Model Quantity Dimensions S400/S800 20” x 25” x 2” S950/S1200/S1600 20” x 25” x 2” S1850/S2200/S3200 16” x 25” x 2” Cambridge Air Solutions S-Series Technical Manual...
  • Page 37 Heater Heater Heater Heater brackets (Qty 4) brackets brackets (Qty 4) (Qty 4) Structural Structural Structural Adjustable Accessory Adjustable Accessory Adjustable Accessory stand brackets (Qty 4) stand brackets stand brackets (Qty 4) (Qty 4) S-Series Technical Manual Cambridge Air Solutions...
  • Page 38 6. Attach thru-wall rain hood and all additional accessories. 7. Seal all seams between accessories using appropriate Structural inlet contractor grade caulk to mitigate potential water elbow ingestion and pressure loss. Structural inlet Structural inlet elbow elbow brackets brackets brackets Cambridge Air Solutions S-Series Technical Manual...

  • Page 39: S-Series 24", 38", & 50" Wall Sleeves

    38” 75 lbs. 15” 42” 38” 50” 95 lbs. 15” 42” 50” 24” 60 lbs. 24 1/8” 47” 24” S1850/S2200/S3200 38” 90 lbs. 24 1/8” 47” 38” 50” 115 lbs. 24 1/8” 47” 50” S-Series Technical Manual Cambridge Air Solutions...
  • Page 40 Flashing Flashing by others by others Discharge Discharge elbows elbows collar collar Discharge Discharge elbows collar elbows collar Retaining clip Retaining clip Retaining clip Retaining clip ment plate ment plate ment plate ment plate Cambridge Air Solutions S-Series Technical Manual...

  • Page 41: S-Series Downturn With Lugs

    S400/S800 35 lbs. 25 1/4” 13” 25 3/8” 6 1/8” 28” S950/S1200/S1600 70 lbs. 28” 15” 42” 7 3/8” 44 5/8” S1850/S2200/S3200 125 lbs. 28” 24 1/2” 47” 12 3/8” 49” Top View Inlet S-Series Technical Manual Cambridge Air Solutions...
  • Page 42 3. Secure threaded hanging rod to the ceiling as required by structural engineer. 4. Secure threaded hanging rod to downturn with lugs Cambridge Air Solutions S-Series Technical Manual...

  • Page 43: S-Series Upturn

    Upturns are insu-lated to help mitigate noise and thermal losses. Model Weight S400/S800 75 lbs. 26 5/8” 25 3/8” 25 3/8” S950/S1200/S1600 115 lbs. 29 1/4” 28” 42” S1850/S2200/S3200 175 lbs. 38 1/2” 37 1/2” 47 1/4” S-Series Technical Manual Cambridge Air Solutions...
  • Page 44 Upturn upturn in preparation to attach the duct extension. ingestion and pressure loss. 4’ horizontal stand Upturn brackets brackets brackets Heater Heater Heater brackets Heater brackets Heater Upturn Upturn Upturn Upturn Cambridge Air Solutions S-Series Technical Manual Upturn...

  • Page 45: Horizontal S-Series 4' Mounting Stand

    Anchor/Sonotube Stand Footprint Weight (lbs.) Locations Stand Size (w/F.S. supports) S400/S800 25 3/8” 85 3/8” 20 1/4” 80 1/8” S950/S1200/S1600 42” 100 1/8” 36 7/8” 95” S1850/S2200/S3200 47” 117 1/2” 41 7/8” 112 3/8” S-Series Technical Manual Cambridge Air Solutions...
  • Page 46 (not provided). • Shims are NOT intended to be used for ad-justing the overall stand height. Stand leg Anchor lock nut Stand leg Anchor lock nut Washer Washer Stand shim Stand shim Cambridge Air Solutions S-Series Technical Manual...
  • Page 47 Secure by resting filter section onto unit’s retaining bracket while using self tapping screws to fasten the internal flange of the filter section the unit’s front face. Heater Heater Heater supports stand stand S-Series Technical Manual Cambridge Air Solutions Heater...

  • Page 48: Vertical Inlet Skirt

    3. Mount close-off panel to the unit/filter section/vertical panels. stand with tek screws as needed. 6. Caulk all seams (8 seams typ.) VERTICAL UNIT SIDE PANEL CLOSE-OFF PANEL FRONT PANEL SIDE PANEL Cambridge Air Solutions S-Series Technical Manual...

  • Page 49: Rain Hood Inlet Skirt

    (Typical both sides.) 4. Hang the upper skirt portion from the rear lip of 6. Caulk all seams with silicone caulk. the rain hood and rotate forward into place. Secure with the sheet metal screws provided. S-Series Technical Manual Cambridge Air Solutions...

  • Page 50: Unit Inlet Skirt

    3. Secure the front panel to the side panels with the hardware provided by others. (Typical both sides.) sheet metal screws provided through the clearance 5. Caulk all seams with silicone caulk. holes in the front panel. Cambridge Air Solutions S-Series Technical Manual...

  • Page 51: Gas Piping

    Do not attempt to start unit at this time. Premature start- a 1/8” NPT tap and high pressure manual shutoff valve upstream of the high gas pressure regulator. up can result in damage to equipment and components. S-Series Technical Manual Cambridge Air Solutions...

  • Page 52: Electrical Wiring

    In this application, the sensor Do not attempt to start unit at this time. should be located on the first column in from the Premature start-up can result in damage to outside wall when feasible. equipment and components. Cambridge Air Solutions S-Series Technical Manual...

  • Page 53: Remote Control Station And Temperature Sensor Locations

    RCS (also mounted on a column), perhaps 1 – 2 columns away from the RCS. S-Series Technical Manual Cambridge Air Solutions...
  • Page 54 • It should be run separately from the AC end only. power wiring. • Consideration should be given to the appropriate wire gauge needed for the length of wire required. • The shield should be grounded at the RCS end only. Cambridge Air Solutions S-Series Technical Manual...

  • Page 55: Thermistor Sensor

    The thermostat display will show the average of the tempera-tures at the two sensing locations. The TAS-2 is a unique application. Consult the design drawing and/ or your Cambridge Representative for placement assis- tance. S-Series Technical Manual Cambridge Air Solutions...

  • Page 56: Start-Up Instructions

    Do not proceed with start-up unless the gas these instructions will void the warranty. supply pressure agrees with nameplate pressure requirements. If the gas supply pressure is in excess of the maximum pressure indicated, a separate Cambridge Air Solutions S-Series Technical Manual...
  • Page 57 Turn the blower service switch to the ”OFF” regulator is needed and has not been installed, check position. with your local agent or Cambridge Air Solutions' Customer Service Group at 1-800-473-4569 to determine the size and capacity requirements. IMPORTANT The average amps must not exceed 103% of the Motor Nameplate FLA.
  • Page 58 #T1 and #T2 of the amplifier. Replace the discharge temperature sensor in the discharge duct. If used, remove the signal generator and reconnect the wires to terminals #5 and #6 of the amplifier Cambridge Air Solutions S-Series Technical Manual...
  • Page 59 Description Section (page 67) for additional infor- mation. Install a thermocouple in the grommet inside the discharge air temperature Sampling Box, and then reinstall the cover. Route the thermocouple wire to a meter located outside of the unit. S-Series Technical Manual Cambridge Air Solutions...
  • Page 60 0” WC, replace the gas valve position. Blower motor will start after the and retest. If the reading is 0” WC, remove the motorized discharge damper opens. manometer and reinstall the pipe plug. Cambridge Air Solutions S-Series Technical Manual...
  • Page 61 (Bypass Mode) as shown in Figure 1. Refer to the Individual Component Description section for additional information. Figure 1 mWARNING: All safety controls must be returned to normal operat- ing conditions. Figure 1 S-Series Technical Manual Cambridge Air Solutions...

  • Page 62: Calibration Procedures

    Calibration Check procedure step 8b. Repeat steps 1 through 9 if necessary. 11. Turn the disconnect switch to the “OFF” position. 12. Turn the blower and burner service switches to the “REMOTE” position. Cambridge Air Solutions S-Series Technical Manual...
  • Page 63 4. Remove the wires from terminals 21 and 22 of the the Individual Component Description Section right-hand side of Terminal Block #1 in the unit (pages 103–109) for additional information. control enclosure. Connect these wires to terminals 1 and 3 of the RHA. S-Series Technical Manual Cambridge Air Solutions...
  • Page 64 5. For the dual dial RHA, adjust the calibration potentiometer shown in the drawing. To raise the discharge temperature, adjust the potentiometer clockwise. To lower the discharge temperature, adjust the potentiometer counterclockwise. Cambridge Air Solutions S-Series Technical Manual...

  • Page 65: Operating Instructions

    10. Igniter is de-energized. 11. Low Fire Start is de-energized after 15 seconds. 12. Unit runs and modulates until operating thermostat and/or interlock opens (heater shuts off). 13. Steps (2) through (12) repeat themselves automatically as necessary. S-Series Technical Manual Cambridge Air Solutions...

  • Page 66: Electronic Thermostat

    OPERATING INSTRUCTIONS ELECTRONIC THERMOSTAT The Cambridge Air Solutions Operating Electronic Thermostat (OET) controls the heater’s ON/OFF operation in a space heating mode. It includes the following features: • Digital LED display of current temperature and temperature settings. • LED indication of status of output relay.
  • Page 67 (-) the measured temperature. 2. Press and hold the button while pressing HEAT OFF or the button until the desired DOWN temperature for the heater to turn OFF is displayed. S-Series Technical Manual Cambridge Air Solutions...

  • Page 68: Tss Controller

    OPERATING INSTRUCTIONS TSS CONTROLLER The Cambridge Air Solutions TSS Controller provides several features to tailor the operation of the Cambridge heating system to particular applications. • Seven day programmable clock. • Separate temperature settings for Heating and Setback operation. • Separate schedules for Summer Ventilation and Heating modes.
  • Page 69 SETTING AUTOMATIC ADJUSTMENT FOR DAYLIGHT SAVING TIME The TSS Controller has the ability to automatically detect and adjust for daylight saving time. The default setting on the controller is to recognize daylight saving time. S-Series Technical Manual Cambridge Air Solutions...
  • Page 70 ON is displayed. saving time should be recognized or ”NO” if daylight saving time is not recognized. 4. Press the button to exit SETBACK SCHEDULE/EXIT the scheduling program. Cambridge Air Solutions S-Series Technical Manual...
  • Page 71 Setting this timer, located on the 12.00AM for time settings; between 12.31 and 1.01 for front of the TSS panel, will override the SETBACK date settings). temperature setting and increase the space temperature to S-Series Technical Manual Cambridge Air Solutions...
  • Page 72 Off 10 On 11 On 11 Off 11 Off 11 On 12 On 12 Off 12 Off 12 On 13 On 13 Off 13 Off 13 On 14 On 14 Off 14 Off 14 Cambridge Air Solutions S-Series Technical Manual...
  • Page 73 ON time. DOWN 9. Press and bold the button while DAY OF WEEK pressing the or the button until the light for DOWN the desired day is illuminated. S-Series Technical Manual Cambridge Air Solutions...
  • Page 74 SETBACK SCHEDULE/EXIT HED 7 the scheduling program. HSD 8 HED 8 15. Verify that the correct current time and light for day HSD 9 of the week are still displayed. HED 9 Cambridge Air Solutions S-Series Technical Manual...
  • Page 75 DOWN 6. Repeat steps 2-5 until all required holiday cycles have desired holiday start date. been entered. 7. Press the button to exit SETBACK SCHEDULE/EXIT the scheduling program. S-Series Technical Manual Cambridge Air Solutions...
  • Page 76 (A period [.] after the F will indicate the Calibration Mode). 2. Pressing the or the button will display the DOWN current calibration difference above or below (-) the measured temperature. Cambridge Air Solutions S-Series Technical Manual...

  • Page 77: Bacnet Controller

    • Standard output points for fan control, burner control and discharge temperature control • Selectable operating modes (unit heater / makeup air / summer ventilation) • Removable screw terminal blocks • Onboard USB port for firmware upgrades • Local user interface display for commissioning and monitoring S-Series Technical Manual Cambridge Air Solutions...
  • Page 78 EOL to third-party devices with only + and - terminals. Terminator Supply Power Terminals To 24 VAC Class 2 Power Supply FC or Bus Cable from Previous Device on Daisy-Chained Bus Segment FC or N2 Bus Terminals Cambridge Air Solutions S-Series Technical Manual...
  • Page 79 Discharge Set Point based on PID loop. 3. If Zone Temperature is above Zone Set Point plus Differential then Supply Fan and Burner stop. 4. Burner will not operate if Outdoor Temperature is above Heating Lockout Set Point. S-Series Technical Manual Cambridge Air Solutions...
  • Page 80 Blink - 2 Hz = Data Transmission (normal communication) Mod Bus Green Blink - 2 Hz Off Steady = No Data Transmission (Auto baud in progress) On Steady = Communication lost, waiting to join. Cambridge Air Solutions S-Series Technical Manual...

  • Page 81: Maintenance Instructions

    Continuous Operation - Severe Service Model Quantity Size (High ambient, dirty 6 months S400/S800 20” x 25” x 2” or moist location, high vibration) S950/S1200/S1600 20” x 25” x 2” S1850/S2200/S3200 16” x 25” x 2” S-Series Technical Manual Cambridge Air Solutions...
  • Page 82 BELT TENSIONING BURNER CLEANING The Cambridge Air Solutions burner is for the most Using a Browning Belt Tension Checker and a part self-cleaning. However, if the application is straight edge, verify proper belt tension according to extremely dirty or dusty, it may become necessary to the following table: periodically clean the burner.
  • Page 83 (open) position. S-Series Technical Manual Cambridge Air Solutions...
  • Page 84 ASCO Rebuild Kit. ∗ BONNET SCREW ∗ BLEED HOLE Locate bleed hole in ∗ core/diaphragm sub--- assembly approximately 30° from valve inlet CAUTION Do not damage valve seat Disassembled View of ASCO Valve Cambridge Air Solutions S-Series Technical Manual...

  • Page 85: Troubleshooting Instructions

    13. Blower a) Defective or locked bearings a) Replace bearings. b) Physical damage b) Replace or repair blower 14. Belts a) Belt Slipping a) Tighten belts. b) Belt broken or missing b) Replace belts. S-Series Technical Manual Cambridge Air Solutions...
  • Page 86 6. Multi-Functional PC Board a) Low fire start set too low a) Adjust modulating valve voltage between 10 and 13 Volts DC. b) Thermistor open or not connected b) Properly install or replace thermistor. Cambridge Air Solutions S-Series Technical Manual...
  • Page 87 Increase differential temperature setting. b) Open or short in thermistor circuit b) Check wiring or replace thermistor. 4. Damper Motor End Switch a) End switch making intermittent contact a) Replace end switch assembly. S-Series Technical Manual Cambridge Air Solutions...
  • Page 88 1 and 2 on TS114J b) Open in sensor circuit sensor exceeds 15,000 Ω 1 and 3 or 2 and 3 on TS144 exceeds 6,000 Ω. c) Correct wiring terminations. c) Sensor cross-wired to amplifier d) Perform appropriate calibration procedure d) Temperature Control System out of (pages 60–62). calibration Cambridge Air Solutions S-Series Technical Manual...
  • Page 89 1 and 2 on TS114J is less than 8,000 Ω; terminals 1 and 3 or 2 and 3 on TS144 is less than 2,900 Ω. b) Perform temperature control system b) Temperature control system out of calibration calibration. S-Series Technical Manual Cambridge Air Solutions...
  • Page 90 (T244 or TS244/TD244) a) Induced voltage in field wiring a) Utilize shielded, twisted pair wiring. 4. Remote Heat Adjust (TD114 or CEI 4175-0-960) a) Induced voltage in field wiring a) Utilize shielded, twisted pair wiring. Cambridge Air Solutions S-Series Technical Manual...

  • Page 91: Damper Motor Replacement & Adjustment

    (This is to avoid a ”Call-for-Fan” clicks, as required, to obtain the correct starting signal from the remote control station during the position. (Refer to Figure 1.) next two steps). S-Series Technical Manual Cambridge Air Solutions...
  • Page 92 16. Using a deep-well, 1/2” hex socket or nut driver, turn the upper cam hex nut clockwise in one click increments until the damper linkage tube rests against the hex shaft. (Refer to Figure 3. ) Cambridge Air Solutions S-Series Technical Manual...

  • Page 93: Reference

    REFERENCE ELECTRICAL CONTROL ENCLOSURE ISOMETRIC DRAWING S-Series Technical Manual Cambridge Air Solutions...

  • Page 94: Electrical Wiring Diagrams

    Low Temperature Cutout Switch - Fan/Off/Heat Entering Air Thermostat Motor Multi-Tap Transformer (24 & 120 Volt) Flame Rod Motor Starter Class 2 Transformer (24 Volt) Flame Safeguard Relay Modulating Valve Temperature Sensor - LTC/EAT Cambridge Air Solutions S-Series Technical Manual...
  • Page 95 Low Temperature Cutout Switch - Fan/Off/Heat Entering Air Thermostat Motor Switch - SOV Leak Test Flame Rod Modulating Valve Multi-Tap Transformer (24 & 120 Volt) Flame Safeguard Relay Motor Starter Class 2 Transformer (24 Volt) S-Series Technical Manual Cambridge Air Solutions...
  • Page 96 Switch - Fan/Off/Heat Flame Rod Motor Starter Switch - SOV Leak Test Flame Safeguard Relay Modulating Valve Multi-Tap Transformer (24 & 120 Volt) Fuse 24 Volt Control Overload Relay Class 2 Transformer (24 Volt) Cambridge Air Solutions S-Series Technical Manual...
  • Page 97 Modulating Valve Multi-Tap Transformer (24 & 120 Volt) Flame Safeguard Relay Overload Relay Class 2 Transformer (24 Volt) Fuse 24 Volt Control Override Timer Switch Tamperproof Sensor Fuse 120 Volt Control Calibration Resistor Programmable Thermostat/Timer S-Series Technical Manual Cambridge Air Solutions...
  • Page 98 Switch - SOV Leak Test Flame Rod Motor Starter Multi-Tap Transformer (24 & 120 Volt) Flame Safeguard Relay Modulating Valve Class 2 Transformer (24 Volt) Fuse 24 Volt Control Overload Relay Temperature Sensor - LTC/EAT Cambridge Air Solutions S-Series Technical Manual...

  • Page 99: Remote Control Station Electrical Connection Diagram

    REFERENCE REMOTE CONTROL STATION ELECTRICAL CONNECTION DIAGRAM S-Series Technical Manual Cambridge Air Solutions...

  • Page 100: Building Automation System

    REFERENCE BUILDING AUTOMATION SYSTEM Cambridge Air Solutions S-Series Technical Manual...

  • Page 101: Gas Train Drawings

    MANOMETER TAP FOR UNIT SUPPLY PRESSURE READING CSA Certified HAND SHUT-OFF VALVE Certified by CSA International to comply with ANSI Standard Z83.4/CSA3.7 Complies with Factory Mutual insurance requirements Complies with XL Insurance Global Asset Protection Services requirements S-Series Technical Manual Cambridge Air Solutions...
  • Page 102 Filter Section MANOMETER TAP FOR UNIT High Pressure SUPPLY PRESSURE READING CSA Certified HAND SHUT-OFF VALVE FM Compliant Certified by CSA International to comply with ANSI Standard Z83.4/CSA3.7 Complies with Factory Mutual insurance requirements Cambridge Air Solutions S-Series Technical Manual...
  • Page 103 ELECTRIC SHUT-OFF VALVE CSA Certified W/ VISUAL INDICATOR (SOV) FM Compliant EXTERNAL GAS TRAIN ENCLOSURE (ROOF SUPPORT BY OTHERS) Certified by CSA International to comply with ANSI Standard Z83.4/CSA3.7 Complies with Factory Mutual insurance requirements S-Series Technical Manual Cambridge Air Solutions...
  • Page 104 High Pressure HAND SHUT-OFF VALVE CSA Certified XL GAPS Compliant Certified by CSA International to comply with ANSI Standard Z83.4/CSA3.7 Complies with Factory Mutual insurance requirements Complies with XL Insurance Global Asset Protection Services requirements Cambridge Air Solutions S-Series Technical Manual...

  • Page 105: Individual Component Descriptions

    See the operating and programming wired in instructions for the TSS Controller (page 66). a series/parallel combination in order to simulate a single thermistor response. S-Series Technical Manual Cambridge Air Solutions...
  • Page 106 (40 to 80˚F). The MAX dial setting determines the ELECTRONIC DISCHARGE-REMOTE (EDR) maximum discharge temperature the heater will deliver The EDR temperature control (80 to 160˚F). When the space temperature drifts from system utilizes Maxitrol’s Series 14 the STS setpoint by more than 3˚F, the modulating modulation controls. The discharge valve is driven to the MIN or MAX discharge temperature sensor, which is temperature, as applicable.
  • Page 107 (DTS). plate. The low gas pressure switch will have to be reset This box should not be tampered with whenever gas supply has been interrupted. unless performing the Calibration Procedures (pages 60–62). S-Series Technical Manual Cambridge Air Solutions...
  • Page 108 105˚F or 120 to 160˚F. A jumper or switch contact the SSV safety shut-off gas valve. is required across terminals 20 and 22 to activate the The gauge port between valves is higher temperature selection. Cambridge Air Solutions S-Series Technical Manual...
  • Page 109 The 45, 50, or 55˚F) in the ventilation mode; or (b) the gas disconnect rod must be turned back to the ”OFF” valve fails to remain energized during a heating cycle. position before attempting to secure the enclosure door. S-Series Technical Manual Cambridge Air Solutions...
  • Page 110 115 Volt; and FNM-2.25 for 200 VA 115 Volt. Consult the heater wiring diagram to identify the proper fusing. Do not increase the fuse rating over that which is Figure 3 specified. Figure 2 Cambridge Air Solutions S-Series Technical Manual...

  • Page 111: Ansi/Ashrae/Iesna Standard 90.1

    (Et). - The Cambridge TSS Controller will meet the standard. A properly configured building DDC system with the necessary programming for zone control, automatic shutdown and setback can also meet the standard. S-Series Technical Manual Cambridge Air Solutions...

  • Page 112: Maintenance Log

    MAINTENANCE LOG M O D E L N O . S E R I A L N O . Date Activity Technician Cambridge Air Solutions S-Series Technical Manual...
  • Page 113 MAINTENANCE LOG M O D E L N O . S E R I A L N O . Date Activity Technician...
  • Page 114 Cambridge Air Solutions S-Series Technical Manual...

  • Page 115: Qr Code

    SCAN THIS CODE TO ACCESS OUR ”HOW-TO” SERVICE VIDEOS ONLINE. https://www.cambridgeair.com/parts-service/how-to-service-videos Cambridge Air Solutions reserves the right to change specifications, modify the design and/or substitute equivalent materials without notice as the result of code requirements, product enhancements, ongoing research/development and vendor changes beyond our control.
  • Page 116 760 Long Road Crossing Dr., Chesterfield, MO 63005 Phone: (636) 532-2233 (800) 899-1989, Fax: (636) 530-6133 www.cambridgeair.com...

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