Hi-Velocity WBM-50 Chilled Water Base Coil Instruction Manual

Hi-Velocity WBM-50 Chilled Water Base Coil

Product Information

• Specifications:
  • Product Name: WBM Chilled Water Base Coil
  • Functionality: Small Duct High-Velocity Heating, Cooling, and Home Comfort Systems
  • Models Available: WBM-50 (1.5-2 Tons), WBM-70 (2.5-3 Tons), WBM-100 (3.5-5 Tons)
  • Manufacturer: Hi-Velocity

Product Usage Instructions

• Coil Configuration:
  • The WBM module can be installed as a stand (return air base) or as a side-mounted coil with four different configurations available.
• Changing Configuration:
  • Remove the front door from the module.
  • Slide out the drain pan from the bottom of the coil casing.
  • Rotate the unit 90 degrees clockwise.
  • Position the horse hair filter in front of the drain line inlets.
  • Replace the drain pan in the new bottom location.
  • Ensure the foam air dam is re-installed under the corner of the coil.
  • Remove round knock-outs on the door to fit drain lines and insert provided plugs.
  • Replace the front door on the module.
• Return Air Cutouts:
  • Use pre-measured guide cuts supplied with the WBM coil to make the initial cut for return air knockout(s) using a power tool with a blade no longer than 5 inches.
  • Subsequently, use a metal shear to match the opening closely to the filter or return air ducting size.

FAQs

• Q: Can the WBM module be installed in different configurations?
  • A: Yes, the WBM module can be installed in four different configurations depending on the desired air inlet and outlet sides.
• Q: How should I change the configuration from up/right to up/left?
  • A: Follow the steps outlined in the manual, including rotating the unit, repositioning the drain pan, and ensuring proper installation of the foam air dam and horse hair filter.
• Q: What tools should I use for making return air cutouts?
  • A: Use a power tool with a blade no longer than 5 inches for initial cuts and a metal shear for precise adjustments to match filter or ducting sizes.

Water Base Modules (WBM)

• The WBM coil is a High Capacity Hydronic Water Coil available as an add-on module to the Hi-Velocity System.
• Mainly used in chilled water applications for cooling, this coil can also be used for heating with water temperatures up to130°F (54°C).
• It can be installed in a variety of orientations depicted below. (Figs. 01, 02)

Coil Configuration

• The WBM module can be installed as a stand (return air base) for the air handler or as a side-mounted coil. When the desired air inlet side has been determined, the module can be adapted.
• The module comes ready with as left/right orientation (Fig. 01) but can easily be changed to a right-to-up/left orientation. (Fig. 02) See page 3 for steps to adapt the coil to up/left.

INSTALLATION

The WBM Module can be installed in four different configurations:

Or (with adaptation)

• A – Entering air in through the left, leaving through the top.
• B – Entering air in through the left, leaving through the right.
• C – Entering air in through the right, leaving through the top.
• D – Entering air in through the right, leaving through the left.

Change Configuration

To change from an up/right (standard) configuration to an up/left configuration, follow the steps below.

1. Remove the front door from the module. (Fig. 03)
2. Remove the drain pan by sliding it out from the bottom of the coil casing, ensuring that the foam air dam is also removed. (Figs. 04a, 04b)
3. Rotate the entire unit 90 deg. clockwise. (Fig. 05)
4. Position the blue horse hair filter in front of the drain line inlets, to filter condensate and prevent any air from bypassing under the coil through the gap in the drain pan’s air dam. (Figs. 06a, 06b)
5. Replace the drain pan in the (new) bottom location. (Fig. 07)
6. Ensure the foam air dam is re-installed under the corner of the coil to prevent air from bypassing under the coil. (Fig. 08)
7. Remove round knockouts on the door to fit drain lines. Plug previously used drain holes with provided plugs. (Fig. 09)
8. Replace the front door on the module. (Fig. 10)

Once the WBM coil configuration and placement of the return air ducting have been decided, the return air knockout(s) can be cut. The pre-measured guide cuts supplied with the coil should always be used to make the first cut. For this first cut, do not use a saw blade longer than 5” (125mm) or damage to the coil can occur.

TO AVOID DAMAGE:

After the first initial cut using the return air knockout(s) a metal shear must be used to make the return air cutout opening match more closely to the filter or return air ducting size to maximize flow capacity.  Use this cut method for both coil inlet and outlet.

• Step 1: First cuts (using pre-measured guide cuts) can be made with a power tool (no longer than a 5” blade)

Mounting Brackets

• Mounting the WBM to the air handler can be done with the T brackets supplied (Fig. 11), ensuring that no screws puncture the drain pan or coil.
• Use the provided mounting tape to air seal the WBM to the air handler.
• See the specifications page for the dimensions of the air handler units and WBM modules.

Return Air

• When designing the return air for a Hi-Velocity System, there are a few things to consider.
• It is common to use centralized return air with systems that have rooms that are within a common area.
• Separate floors or rooms that have high loads and require a large amount of supply airflow should have their return air, or be tied into the centralized return air to allow the air to return to the air handler.
• Rooms or areas that cannot be tied into the return air should have an air transfer grill to allow the air to escape the room and flow back to centralized return air.
• Important: Return Air must be filtered before entering the WBM module.

Duct Sizing

• The Return Air is to be sized on a 0.15 static pressure (37 pa) as compared to 0.10 static pressure (25 pa) for conventional forced air systems.
• The maximum length for an individual return air duct is fifty feet (15.24m).
• Please note: It is VERY important NOT to undersize the return air, as this will create noise, increase motor power consumption, reduce airflow and increase the possibility of condensate carry-over.
• Important: When connecting a round Return Air to the WBM coil, a round-to-rectangular transition is required.
• Table 01 has recommended return air sizes for round and rectangular ducts. A variance of +20% is allowable for sizing return ducts that connect to the WBM or Hi-Velocity Systems unit.

Table 01 – Return Air Duct Sizes

• Remember: When using a flexible duct for return air, use one duct size larger due to the higher friction loss.
• Where allowed by local codes, a single return air grill may be used.
• Note: Return air grill must have an equal minimum of free air area to return air.
• Important: When using a flexible duct for return air, use one duct size larger due to the higher friction loss.

Piping the RBM

• The WBM comes complete with 2 built-in 3/4” M CPVC (19mm) drain lines, primary and secondary. Ensure the primary drain line is vented and P-trapped.
• The use of a mixture of glycol will reduce capacities; refer to glycol manufacture reduction charts.
• When the potential for gravity flow of the hot water exists, check valves may be needed on both the supply and return lines.
• All lines should be piped so as not to restrict access to the front panels, filter section, or electrical enclosure. Size your supply and return lines according to Table 02.

Table 02 – WBM pipe sizing

Drain Connections, P – Trap & Secondary Drain Pan

Important: Piping the condensate lines on a return side cooling coil can be dramatically different, be sure to read the info below.

The primary condensate drain must have a minimum 3” P-Trap installed (Fig. 12). The drain line must run at a slope of ¼” per foot in the direction of the drain. WBM modules come with a ¾” male CPVC primary and secondary outlet. It is good practice to install a cleanout right above the P-Trap. Using a “tee fitting” and cap in the P-Trap’s construction can be used as the cleanout and as a way to prime the P-Trap if it ever dries out. A wet P-Trap is important. A dry P-Trap can be detrimental to proper drainage. If the code requires a secondary drain line, run the secondary line using the same method as the primary. Otherwise, capping off the secondary drain line is acceptable. Do not run the secondary drain line to the secondary drain pan or use it as a vent to the atmosphere! An equipment stand/riser or rubber equipment mat may be necessary to elevate the module off of the ground to allow for a P-Trap. Any installation that has the potential of property damage due to condensate must have a secondary drain pan installed. If the unit is installed in a high heat and/or high humidity location, extra insulation around the unit casing may be required. This will prevent excessive condensation from forming on the outer surface of the casing.

WBM Specifications

HV-100/101 LV-120/140 LV-Z/LV-E-1050
Part Number| 40090400050| 40090400070| 40090400100
BTUH 80°/67° @ 42°F E.W.T.

(27°/19 @ 5.5°C E.W.T.)

| 18,000-24,000

(5.3-7.0 kW)

| 30,000-36,000

(8.8-10.6 kW)

| 42,000-60,000

(12.3-17.6 kW)

Fin Material| Aluminum| Aluminum| Aluminum
Tubing Material| Copper| Copper| Copper
Type of Fins| .006 Al (0.1524mm)| .006 Al (0.1524mm)| .006 Al (0.1524mm)
GPM Flow Ratings (L/s Flow Ratings)| 5 (0.32 L/s)| 7 (0.44 L/s)| 10 (0.63 L/s)
Hydronic Connection Sizes| Supply Line| 3/4” (19mm)| 3/4” (19mm)| 3/4” (19mm)
Return Line| 3/4” (19mm)| 3/4” (19mm)| 3/4” (19mm)
Drain Connection| 3/4” M CPVC (19mm)| 3/4” M CPVC (19mm)| 3/4” M CPVC (19mm)
Shipping Weight| 35 lbs (15.9 kg)| 45 lbs (20.4 kg)| 55 lbs (25.0 kg)
Module Size (L x W x H)| 14 1⁄2” x 18 1⁄4” x 18 1⁄4” (368mm x 464mm x 464mm)| 19 1⁄2” x 18 1⁄4” x 18 1⁄4” (495mm x 464mm x 464mm)| 25 1⁄2” x 18 1⁄4” x 18 1⁄4” (648mm x 464mm x 464mm)

WBM Series Sizing

Water Modules| B| C| A| D| E| F
WBM-50| 14 1⁄2” (368mm)| 18 1⁄4” (464mm)| 18 1⁄4” (464mm)| 3/4” o.d. (19mm)| 3/4” o.d. (19mm)| 3/4” M CPVC (19mm)
WBM-70| 19 1⁄2” (495mm)| 18 1⁄4” (464mm)| 18 1⁄4” (464mm)| 3/4” o.d. (19mm)| 3/4” o.d. (19mm)| 3/4” M CPVC (19mm)
WBM-100| 25 1⁄2” (648mm)| 18 1⁄4” (464mm)| 18 1⁄4” (464mm)| 3/4” o.d. (19mm)| 3/4” o.d. (19mm)| 3/4” M CPVC (19mm)

WARRANTY

Energy Saving Products Ltd. is proud to offer a limited warranty. This warranty applies strictly to the first purchaser at the wholesale level and only to the Air Handler unit and module. It does not include connections, attachments and other products or materials furnished by the installer.  This warranty excludes any damages caused by changes, relocation to, or installation in a new site. This warranty does not cover any defects caused by failure to follow the installation and operating instructions furnished with the Air Handler. This warranty does not cover defects caused by failing to adhere to local building codes and following good industry standards. Failure to correctly install the Air Handler, or material related to the unit, may result in improper system performance and/or damages and will void this warranty. This warranty does not cover material installed in or exposed to a corrosive environment. This warranty does not cover products subjected to abnormal use, misuse, improper maintenance, or alteration of the product. Using the Air Handler and/or module as a source of temporary heating/cooling during construction will void this warranty. A Five (5) Year Limited Warranty is extended on all components in products manufactured exclusively by Energy Saving Products. These components include Motors, WEG Controllers, Circuit Boards, Dampers, Zoning Controls, Blowers, Motor & Blower Assemblies, Heating Coils, Chilled Water Coils, and Air Conditioning Coils. Note: If any product is installed in or exposed to a corrosive environment, the warranty will be void.

• A Three (3) Year Limited Warranty is extended on Electric Strip Heaters.
• A One (1) Year Limited Warranty is extended on replacement parts.

Products sold by Energy Saving Products but manufactured by others will carry the original manufacturer’s warranty.

TERMS & CONDITIONS

• Warranty will not be considered unless a contractor has contacted Energy Saving Products Ltd. Technical Support department for assistance, and received a tech code.
• Any repair performed under warranty must be approved by Energy Saving Products Ltd. for this warranty to be valid.
• The liability of Energy Saving Products Ltd. is limited to and shall not exceed the cost of pre-approved replacement parts.
• This warranty does not cover shipping costs to and from the factory, labour costs or any other cost associated with the installation of the replacement part.
• Inoperative parts must be returned to Energy Saving Products Ltd. with an ESP RMA Form that includes the model, serial number, and a detailed description of the entire problem. Inoperative parts must be returned in testable condition.
• Energy Saving Products Ltd. is not liable for any other damages, personal injury, or any other losses of any nature.

Follow these steps for Service or Repair:

1. Contact the installer of the product or a licensed service company
2. Contact the distributor
3. Contact Energy Saving Products Ltd. Mon-Fri 8 am – 4:30 pm MT 1-888-652-2219
4. This warranty replaces all other warranties expressed or implied. www.hi-velocity.com.

Energy Saving Products Ltd, established in 1983, manufactures the Hi-Velocity SystemsTM product line for residential, commercial and multi-family markets. Our facilities house Administration, Sales, Design, Manufacturing, as well as Research & Development complete with an in-house test lab. Energy Saving Products prides itself on Customer Service and provides design services and contractor support. For all of your Heating, Cooling and Indoor Air Quality needs, the Hi-Velocity System is the right choice for you!

• Small Duct Heating, Cooling and IAQ Systems
• Build Smart, Breathe Build Smart, Breathe EasEasyy
• Hi-VHi-Velocity HE-Z Air Handlers, velocity HE-Z Air Handlers, Green Green TTechnologyechnology
• Phone: 780-453-2093
• Fax: 780-453-1932
• Toll Free: 1-888-652-2219
• www.hi–velocity.com.

References

• velocity.com
• Energy Saving Products LTD.

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