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*SHW *SVW Direct Drive ECM
DIRECT DRIVE BLOWER COIL UNITS
0-10VDC input controlled
Installation, Operation, and
Maintenance Instructions
W
ARNING TO
Altering the product, improper installation, or replacing parts with unauthorized parts voids
all warranty or implied warranty and may result in adverse operational performance or
possible hazardous conditions to service personnel and occupants. Company employees or
contractors are not authorized to waive this warning.
NOTES:
Read the entire installation instruction manual before starting the
installation.
These instructions are intended as a general guide and do not supersede
national, state, or local codes in any way.
These instructions must be left with the property owner.
S
C
AFETY
ONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion,
fire, electrical shock, or other conditions which may cause personal injury or property damage.
Consult a qualified licensed installer, service agency, or your distributor for information or
assistance. The qualified licensed installer or service agency must use factory-authorized kits or
accessories when modifying this product. Refer to the individual instructions packaged with kits or
accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing
operations. Have fire extinguisher available. Read these instructions thoroughly and follow all
warnings or cautions attached to the unit. Consult local building codes and National Electrical Code
(NEC) for special requirements.
IOM8801
Rev. B
I
, S
NSTALLER
04/22
P
,
ERVICE
ERSONNEL
AND
O
WNER
1
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Summary of Contents for First SHW Series
- Page 1 *SHW *SVW Direct Drive ECM DIRECT DRIVE BLOWER COIL UNITS 0-10VDC input controlled Installation, Operation, and Maintenance Instructions ARNING TO NSTALLER ERVICE ERSONNEL WNER Altering the product, improper installation, or replacing parts with unauthorized parts voids all warranty or implied warranty and may result in adverse operational performance or possible hazardous conditions to service personnel and occupants.
- Page 2 Safety Considerations Recognize safety information. This is the general safety-alert symbol . When you see this symbol on the unit and in instruction manuals, be alert to the potential for personal injury or damage to equipment. The lightning bolt symbol signifies an electrical shock hazard.
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Page 3: Installation Precautions
1. Always use proper tools and equipment. 2. No wiring or other work should be attempted without first ensuring blower coil is completely disconnected from the power source and locked out. Always verify that a good permanent, uninterrupted ground connection exists prior to energizing any power sources. - Page 4 Safety Considerations BLOWER COIL UNIT The installer must adhere strictly to all local and national code requirements pertaining to the installation of this equipment. The SHW blower coil units are designed to be installed in a horizontal position with discharge air in a horizontal direction.
- Page 5 Safety Considerations For models 24-60, two (2) mounting rails are supplied on the blower coil unit, as shown in Figure 2. All anchors for mounting the equipment must be placed and sized to ensure a safe and durable installation. When necessary use shims to obtain the proper level. This will ensure that the condensate will drain from the unit.
- Page 6 Safety Considerations These direct drive blower coil units are provided with a control box with 0-10V low voltage terminal connections, for in-field installation. ECM motor speed adjustments will be done through the field installed 0-10V signal. Reference Wiring Diagrams (Check product for applicable wiring diagram) Figure 3: Standard wiring diagram, 3 phase SHW/SVW Installation, Operation, and Maintenance Instructions...
- Page 7 Safety Considerations Figure 4: Condensate switch option, 3 phase Figure 5: Standard 120V, 1 phase Figure 6: Standard 230V, 1 phase SHW/SVW: Installation, Operation, and Maintenance Instructions...
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Page 8: Piping Precautions
Safety Considerations Figure 7: Standard 277V, 1 phase PIPING PIPING PRECAUTIONS Flush all field piping prior to connection to remove all debris. Use wet cotton rags to cool valve bodies when soldering. Open all valves (mid-way for hand valves, manually open on motorized valves) prior to soldering. When soldering to bronze or brass, heat the piping while in the socket/cup and begin introducing the solder when the flux boils rapidly. -
Page 9: Piping Installation
Safety Considerations CAUTION: Hydronic systems are not designed to hold pressurized air and should only be tested with water. Pressurizing system with air could damage equipment. When all connections are complete, pressure test system. Repair any solder joint leaks and gently tighten any leaking valve packing nuts and piping accessories, as required. -
Page 10: Piping Insulation
Safety Considerations Figure 10: Bad trap configuration PIPING INSULATION Installing Contractor - After the system has been proven leak free, all lines and valve control packages must be insulated to prevent condensate drippage or insulated, as specified on the building plans. NOTE: Many valve packages will not physically allow all components to fit over an auxiliary drain pan. -
Page 11: Maintenance
Safety Considerations Ensure all access panels are in place and secured. Check that coil(s), valves and piping have been leak checked and insulated as required. Ensure that all air has been vented from the system. Ensure polarity is observed for 0-10V low voltage connections (see wiring diagram) MAINTENANCE INSPECTION AND CLEANING Before start-up all of the components should be given a thorough check. -
Page 12: Drain Piping
Safety Considerations DRAIN PIPING The drain should always be: • Connected or piped to an acceptable disposal point sloped away from the unit at least 1/8-inch per foot, and kept clean and free from obstructions. • Checked before summer operation. •... - Page 13 P.O. BOX 270969, Dallas, TX 75227 www.firstco.com www.ae-air.com The manufacturer works to continually improve its products. It reserves the right to change design and specifications without notice. ©2022 First Co., Applied Environmental Air...
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