Heating Season; Operating Limits; Chassis Installation; Installation Of Fittings And Hoses - Omega VSHP Series Installation And Operation Manual

OMEGA | WATER SOURCE HEAT PUMPS
operating efficiency.
Operation of riser loop temperatures above 110
is not permitted. Elevated risers loop temperatures may
cause nuisance alarm trips. Refer to 'Unit Operation
Limits".

Heating Season

In heating mode riser loop temperatures must be main-
o o
tained within 55 F to 90 F for standard range operation.
For Low Temperature Water (LTW) operation, riser loop
temperature are permitted down to 45
only lopp systems. In Geothermal Range operation, be-
o
low 45 F EWT, the system loop must contain an appro-
priate glycol mixture for loop systems to protect the sys-
tem from freezing the water circuit. For Geothermal op-
eration units must come with factory Geothermal Range
option. Do not operate riser system below 20

Operating Limits

Cooling
Air Limits
DB
o
Std. Entering Air Temperature (EAT)
75 F
o
Min. Entering Air Temperature (EAT) 65 F
o
Max. Entering Air Temperature (EAT) 85 F
Standard Range
Fluid Limits
Cooling
o
Std. Entering Fluid Temperature (EFT)
85 F
o
Min. Entering Fluid Temperature (EFT) 50 F
o
Max. Entering Fluid Temperature (EFT)
110 F
Design limits can not be combined. Combin-
ing maximum or minimum limits is not al-
lowed. This could exceed the operation and
design limits of the unit.
For example: It is not allowed to combine
maximum entering air temperature (EAT) limits with
maximum entering fluid temperature (EFT) limits.

6. CHASSIS INSTALLATION

Do not apply plumbers putty, pipe dope or
sealing tape to NPSM water 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.
8
o
F EWT
o
F EWT with water
o
F EWT.
Heating
WB DB
o o
63 F 68 F
o o
55 F 50 F
o o
71 F 80 F
Low Temp Water Range Geothermal Range
Heating Cooling Heating Cooling Heating
o o o o o
70 F 85 F 55 F 85 F 60
o o o o o
55 F 50 F 45 F 30 F 20
o o o o o
90 F 110 F 90 F 110 F 90
Check hoses and fittings for any visible dam-
age or debris.
Remove the chassis top cover panel and inspect the
inside of the chassis unit. Ensure that the water and
refrigerant tubing is free from obvious physical damage
and kinks.
Check that piping does not touch other unit
components and other piping. Internal cop-
per pipes can shift during transport, storage
or installation.

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.

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.
F

Units with NPT Riser and Chassis Fittings

F
Connect the supplied male-male (NPT/ NPSM) cou-
F
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 flare style fittings.
Connect the supplied hoses to the riser shut-off valves.
Always use a back-up wrench. DO NOT OVERTIGHT-
EN.
Step by step instructions when connecting hoses to iso-
lation valves:
1) Do not use pipe dope or Teflon tape! Hand
tighten hose to the isolation valve.
2) Use back-up wrench located at the front of the
valve or secure to the middle of the valve
body. Tighten a further 1/6 turn. Approx. 20FT/
LBS of torque.
OMEGA-VSHP.G-IOM-2205