Installation
WSHP-SVX10H-EN
15
If unit cabinet assembly includes
factory provided risers
, and
"no" field provided between-the-floor riser extensions, please
move to
Note:
Risers are designed to accommodate a maximum of
1½" to 3" expansion and contraction. If the total
calculated riser expansion exceeds 3", expansion
devices must be field provided.
If unit cabinet assembly includes factory provided risers and
field provided between-the-floor riser extensions are required,
install the extensions before installing the cabinet.
1. Install drain valve, shut-off/balancing valves, flow
indicators and drain at the base of each supply and return
riser to enable system flushing at start-up, balancing and
service/maintenance.
2. Lift cabinet into space while aligning it into the 3" swage of
the riser below.
Note:
Take extra care as not to scrape or dent risers during
positioning. The riser should fall approximately 2" into
the 3" swage. This will allow for the variation in floor-to-
floor dimensions, and keep the riser joints from
bottoming out.
3. Level the cabinet.
4. Plumb risers in two planes to assure proper unit operation
and condensate drainage.
5. Anchor all units into place.
6. For field provided risers, center the supply/return stubouts
into the unit expansion slots. The stubouts should be
perpendicular to the cabinet panel.
7. Verify all risers are vertical and that they penetrate the
swaged joint at least 1". Riser should not be allowed to
bottom out.
8. Braze riser joints. Soft solder or low-temperature alloys
should not be used in this application.
9. If risers are field provided, it is recommended that the risers
be anchored to the building structure with a minimum of
one contact point. For expansion and contraction reasons,
do not fasten risers rigidly to the building.
10. Seal access holes made through the cabinet for piping with
suitable material to help eliminate air leakage.
11. See
“Cleaning and Flushing the Water Loop,” p. 18
for
system flushing.
Note:
Remove shipping straps from risers.
Water Connection
For vibration isolation, it is recommended that flexible steel
braided hoses be installed instead of hard piping between the
vertical risers and the unit chassis.
Note:
Refer to WSHP-PRC025*-EN for hose kit variations.
Note:
Two foot hose kit and ball valves are recommended
for 009 - 018 size units. Three foot hose kit and ball
valves are recommended for 024 - 036 size units.
Field Installed Power Wiring
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury.
All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state/national electrical codes.
Verify that the power supply available is compatible with the
unit’s nameplate. Use only copper conductors to connect the
power supply to the unit.
NOTICE
Use Copper Conductors Only!
Failure to use copper conductors could result in
equipment damage as the equipment was not designed
or qualified to accept other types of conductors.
Main Unit Power Wiring
WARNING
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is present
with a voltmeter.
A field supplied disconnect switch must be installed at or near
the unit in accordance with the National Electric Code (NEC
latest edition).
Location of the applicable electric service entrance for HIGH
(line voltage) may be found in the following figure.
Figure 7.
Power wire entrance
