OMEGA-VSHYe.F-IOM-2108
8
6. CHASSIS INSTALLATION
Do not apply plumbers putty, pipe dope or
sealing tape to NPSM fittings.
Always use a back
-
up wrench when tightening
hoses or fittings. Damage to copper pipes and
solder joints could result in serious equipment
and property damage.
Check hoses and fittings for any visible dam-
age or debris.
INSTALLATION OF FITTINGS AND HOSES
Upon removal of service cover panel check cabinet inte-
rior for construction debris and dust. Clean out all dust
and debris.
Close riser shut
-
off valves and disconnect factory hoses
from riser supply or return shut off valves.
Units with NPSM Riser and Chassis Fittings
Connect the supplied hoses to the Male
-
NPSM riser
shut
-
off valves. Do not apply pipe dope or pipe sealant
to NPSM fittings.
Always use a back
-
up wrench
.
Fin-
ger tighten hose and tighten with back
-
up wrench
approximately 1/6 turn. DO NOT OVERTIGHTEN
.
See Hose Kit Details.
Units with NPT Riser and Chassis Fittings
Connect the supplied male
-
male (NPT/ NPSM) cou-
plings to the Female
-
NPT supply and return riser shut
-
off valves.
Do not apply pipe dope to the NPSM fit-
tings, as these are JIC style fittings.
Connect the supplied hoses to the riser shut
-
off valves.
Always use a back
-
up wrench
.
DO NOT OVERTIGHT-
EN.
CHASSIS INSTALL
1. Remove chassis packaging, leaving cardboard ship-
ping cover on the air coil cover in place. Check chassis
nameplate to verify chassis model matches cabinet
model for compatibility.
2. Align chassis with front of the cabinet and tilt chassis
so that the back aligns with the cabinet rails.
3. Slide chassis into cabinet partially. Check to ensure
wiring harnesses are not being pinched. Adjust the chas-
sis to ensure it is resting approximately centered in the
rails.
4. Connect the hoses by hand to the chassis supply and
return connections. Hand tighten, then using a back
-
up
wrench tighten fittings as necessary. Ensure that the
hose supply and return connections are not reversed
and matched to correct risers. Water IN and water OUT
is stamped on the chassis sheet metal enclosure.
5. If riser loop system has been commissioned and oper-
ational open the riser shut
-
off valves. Check for any
signs of water leaks at all water connection points.
Trapped system air can be purged from the chassis hy-
dronic coil through the top MNPT port.
6. Connect the chassis electrical plugs to the quick con-
nect mating plugs in the cabinet electrical box.
7. Slide the chassis into the cabinet. Check to ensure
wiring harnesses and hoses are not being pinched. Do
not push against the air coil surface.
8. Ensure hoses are not pressed against unit cabinet.
9. Remove cardboard shipping cover from the air coil.
10. Install the service cover panel and visually check
foam gasket is not damaged and providing an adequate
seal.
11. Insert filter into service cover panel.
12. Install Return Air Panel into the closet drywall open-
ing if not already done and secure with screws.