AquaStar 170 VP User Manual

3

The pressure regulator provided with the heater is set  to deliver the proper gas pressure (as
indicated on the rating plate and in the manual) for altitude up to 2500 feet (758 meters) above
sea level.  On appliances being installed above 2500 ft/ 758 m elevation, the inlet gas pressure
should be reset at installation to the value shown below for the altitude of the installation.
NOTE:  The gas pressures specified below refer to pressures taken at the test pressure
nipple on the manual gas valve.  These readings should be taken while the heater is
operating at full output --i.e. maximum water flow with the temperature setting on #8.

MAXIMUM INLET GAS FLOW PRESSURE SETTING

ALTITUDE

NATURAL GAS

LIQUID PROPANE

inches W.C.

inches W.C.

0 - 2,500 FT / 758 M

6.45"

9.85"

2,000 ft - 4,500ft / 758m - 1212m

5.15"

8.10"

Gas input ........................... max:  165,000 Btu

   min:     56,400 Btu

Water Connection ................... 3/4" NPT fitting
H x W x D ........................... 35.5"x22.5"x13.5"
Vent ............................................................. 6"
Gas Connection................................ 3/4" NPT
Min. Water Pressure ............................. 15 Psi
Max. Water Pressure .......................... 150 Psi
Shipping Weight ..................................... 74 lb
Net Weight .............................................. 66 lb
GPM at 90ºF rise ...................................... 2.9*
GPM at 45ºF rise ...................................... 5.8*
Min. Water Flow ........................... 1.1 gal/min
LP GAS Pressure inlet ........... min.: 8"W.C.***

max.: 13"W.C.**

LP GAS Manifold pressure ............ 8.66" W.C.
Natural Gas Pressure inlet ... min.:3.5"W.C.***

       max.:10.5 " W.C.**

Natural Gas Manifold Pressure ........ 3.5"W.C.

*    Figured on a 55ºF cold inlet temperature
**  Inlet gas pressure must not exceed this value
***For purposes of input adjustment