nVent 89216863 RackChiller Rack Manifold User Manual
- October 30, 2023
- nVent
Table of Contents
nVent 89216863 RackChiller Rack Manifold User Manual
1. OVERVIEW
nVent’s rack manifolds are made of stainless steel square tubes utilizing high quality fabrication processes and components. nVent rack manifolds enable integrated IT rack cooling loops to connect with compatible cooling infrastructures.
2. MINIMUM REQUIREMENTS
2.1. Dimensions
It is recommended to use manifolds in a cabinet space that is a minimum of 4
¼” (11 cm) taller than the manifold itself. A minimum clearance of 1 ¼” (3.5
cm) above and 3” (7.5 cm) below the manifold is recommended.
2.2. Water Quality Requirements
nVent follows the water quality guidelines for liquid cooling equipment
published by ASHRAE. ASHRAE recommends the following water quality for the
secondary or technology cooling system loop.
When using treated water as the cooling liquid in the secondary loop, nVent supports using deionized and distilled water. The use of reverse osmosis and demineralized water is not supported.
2.3. Filtration
nVent recommends using a maximum 50 micron filter on the secondary or
technology cooling system loop to remove any particulate within the secondary
loop during operation. If smaller passage dimensions exist within the
secondary loop, then a filter with a smaller passable media dimension can be
selected to maintain the ½ to 1/10 passable media range. Differential pressure
should be monitored across the filter and tracked over the course of operation
to determine if there is particulate build up in the filter. If the
differential pressure indicates that there is build up on the filter, the
filter should be removed and cleaned, and the particulate from the filter
should be examined to determine the type of particulate in the system.
3. SPECIFICATIONS
3.1. Weldment Assembly
3.1.1. Base Material
304L Stainless Steel
3.1.2. Dimensions
Note: dimensions and weights refer to standard models. Custom orders will
vary.
RCM42001 Standard Model:
• RCM42001H Hose Whip Model:
3.1.3. Weight
Fully populated:
• RCM42001 Standard Model
– Dry: 25 lbs
– Filled: 30 lbs
• RCM42001H Hose Whip Model
– Dry: 45 lbs
– Filled: 55 lbs
3.1.4. Internal Volume
Fully populated:
• RCM42001 Standard Model: 195 in3
• RCM42001H Hose Whip Model: 305 in3
3.1.5. Flow Rating
Max flow per branch must not exceed 2.2 GPM.
3.1.6. Maximum Operating Pressure
150 psig (10 bar)
3.1.7. Temperature Rating
• Max operating temperature: 70°C
• Storage temperature: -40°C to 80°C
- It is recommended to warm the rack manifold up to room temperature prior to installation to prevent damages to seals and hoses during handling.
3.2. Hose
3.2.1. Material
Peroxide Cured EPDM
3.2.2. Dimensions
• Inlet/outlet Hoses: 1” ID available in 36” lengths
• Branch circuit Hoses: 3/8” ID available in 12”, 18”, and 24” lengths
3.2.3. Minimum Allowable Bend Radius
• 1” ID hose: 6”
• 3/8” ID hose: 3”
3.2.4. Humidity Requirement
It is recommended that ambient humidity be below 70%.
3.2.5. Wetted Materials
During normal operation, coolant comes in contact with the following
materials:
• 304L Stainless Steel
• Chrome Plated Brass
• C36000 Brass
• Peroxide Cured EPDM
• Fluorocarbon (FKM) seals
• Nitrile (NBR) seals
4. INSTALLATION
4.1. Handling
Outside of the carton, the rack manifold is best transported to the
installation site with the use of a cart. Do not carry or grab the rack
manifold by the quick disconnects or hose whip. Do not drag the inlet/outlet
hoses across the floor as this can damage to the dual interlocking ball valve
or introduce debris to the inner seal.
4.2. Pre-Commissioning Checklist
4.2.1. Depressurizing
The rack manifold is pressurized with 10 psig of Nitrogen from the factory.
Depressurizing requires attaching the purge hose kit to the purge/drain port
and slowly opening the small ball valve.
4.2.2. Inspecting Bumpers
Ensure the black rubber bumper is properly seated on the dual interlocking
ball valve.
4.2.3. Inspecting Seals
Ensure the face seal of the dual interlocking ball valve is properly seated.
• Improperly seated seal:
• Properly seated seal:
4.2.4. Hose Inspection
Inspect all hoses for kinks. If the hose is kinked upon receiving, inspect the
kinked section, and do not use if there are signs of stress (discoloration) or
cracks.
4.2.5. Mounting
To mount rack manifolds, follow the relevant section of the installation
instruction manual included with the mounting bracket kit.
Do not lift manifold by hoses or quick disconnects.
The rack manifold contains a 1/2″ M6 stud as an optional ground connection,
which is indicated by a ground label. It is recommended that this be used with
the nVent Bonding and Grounding Kit (Catalog #: DBGRDK).
4.3. Commissioning
4.3.1. Flushing
Manifolds should be thoroughly flushed with fluid before connecting to the
cooling circuit in order to reduce the risk of contamination entering the
circuit. To flush the manifold, connect the fill and purge kit to the port
furthest from the 1” inlet/outlet hose. Open the ball valve on the fill and
purge kit and run fluid through the manifold for a minimum of 30 seconds.
1: Purge/drain port
2: Fill and purge kit
4.3.2. Connecting Quick Disconnects
The port furthest from the 1” inlet/outlet hose is for draining/purging and is
not intended to be connected to a cooling circuit. When connecting quick
disconnects, the force to connect increases as the internal pressure of the
system increases. It is recommended to support the manifold while inserting
quick disconnects.
4.3.3. Purging Air
It is important to purge all air from the cooling infrastructure before
commissioning any system. It is recommended to purge all circuits in series
first, then purge parallel circuits from lowest to highest until all branches
are purged of air. An external pump that provides at least 10 GPM is suggested
in order to have sufficient flow capacity to move and dislodge any trapped
air. The system is purged of air when the coolant passing through the purge
hose kit is clear or free of entrained air.
• For bottom feed configurations, the topmost port functions as the purge outlet.
1: Manifold purge/drain port
2: Purge kit
3: Bucket (not included)
• For top feed configurations, the manifold inlet/outlet dual interlocking ball valve can be used as the purge outlet by using the dual interlocking ball valve adaptor kit.
1: Manifold Inlet/outlet dual interlocking ball valve
2: Top feed purge kit adaptor
3: Purge kit
4: Bucket (not included)
5. SPARE PARTS
6. SAFETY AND USER RESPONSIBILITY
-
It is the responsibility of the user to ensure the product used presents no health or safety hazard conditions through their own analysis and testing.
-
This product can cause severe injury or death if used improperly. Never pressurize the product above 10 psig with compressible fluid. Pressurization above 10 psig must be done hydrostatically.
-
The rack manifold is mechanically isolated for thermal performance and is equipped with an optional grounding provision.
Avoid routing electrical wires nearby the rack manifold. Do not terminate any wires near the hoses. -
Installing the rack manifold near any radiant heat source could cause accelerated aging of the hose and other non-metallic components.
7. WARRANTY
https://HOFFMAN.nVent.com/rackchiller-rack-manifold-product-warranty
North America
All locations
Tel +1 763 422 2211
Europe
Straubenhardt, Germany
Tel +49 7082 794.0
Betschdorf, France
Tel +33 388 90 64 90
Warsaw, Poland
Tel +48 22 209 98 35
Assago, Italy
Tel +39 02 5776151 224
Middle East & India
Dubai, United Arab Emirates
Tel +971 4 823 8666
Bangalore, India
Tel +91 80 6715 8900
Istanbul, Turkey
Tel +90 216 250 7374
Asia
Shanghai, P.R. China
Tel +86 21 2412 6943
Qingdao, P.R. China
Tel +86 532 8771 6101
Singapore
Tel +65 6768 5800
Shin-Yokohama, Japan
Tel +81 45 476 0271
©2022 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without notice.
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References
- We connect and protect | nVent
- Electrical Heat Tracing | Heat Tracing | nVent RAYCHEM
- RackChiller Rack Manifold Product Warranty | nVent