Hydrotech 6700 User Manual

#51431 Rev. 11/08

US

Read all instructions carefully before operation.

6700 Valve
Downflow

Automatic Water Softeners
Operation Manual

1

Performance and Specifications

Downflow Capacity at Various Salt Dosages Service Flow Backwash Resin Mineral Brine Brine Tank Shipping

Metered grains Rate

(2)

Flow Rate Volume Tank Size

(3)

Tank Size

(3)

Salt Capacity Weight

Model @15lb/cf @10lb/cf

(1)

@6lb/cf @3lb/cf USGPM USGPM cu. ft. inches inches Lbs. Lbs.

6700MID-844-75 22,500 18,000 12,750 9,750 8 1.5 0.75 8 x 44 18 x 33 335 70

6700MID-648-100 30,000 24,000 17,000 13,000 10 2.0 1.00 9 x 48 18 x 33 335 85
6700MID-1047-125 37,500 30,000 21,250 16,250 12 2.4 1.25 10 x 47 18 x 33 335 110
6700MID-1054-150 45,000 36,000 25,500 19,500 12 2.4 1.50 10 x 54 18 x 33 335 125
6700MID-1252-200 60,000 48,000 34,000 26,000 13 3.5 2.00 12 x 52 18 x 33 335 150
6700MID-1450-250 75,000 60,000 42,500 32,500 13 5.0 2.50 14 x 50 21 x 36 335 190

ADDITIONAL INFORMATION: Operating Temperature Range = 34° to 110°F (1° to 43°C). Operating Pressure Range = 20 to 120 psi (1.37 to 8.27 bar). The manufacturer reserves the right to make product
improvements which may deviate from the specifications and descriptions shown above, without obligation to change previously manufactured products or to note the change.

CAUTION: These products are not intended to be used to treat water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
NOTES:

(1)

10lb/cu.ft. salt dosage is the standard factory setting.

(2)

The Service Flow Rate given will not exceed a pressure drop of 15psi.

(3)

Dimensions of cylindrical tanks shown are diameter (or width) x height.

Cabinets shown as length x width x height.

How Your Water Conditioner Works

Hard water enters your home through the main supply line, enters your water conditioner, and passes down through a bed
of ion exchange resin which softens the water. An ion exchange process takes place in which the resin beads capture and
hold calcium and magnesium, the hardness impurities, while the water takes on sodium ions. The soft water then flows up
and into your household water line.

Installation Instructions

All government codes and regulations governing the installation of these devices must be observed.

CAUTION: If the ground from the electrical panel or
breaker box to the water meter or underground
copper pipe is tied to the copper water lines and
these lines are cut during installation of the Noryl
bypass valve and/or poly pipe, an approved
grounding strap must be used between the two lines
that have been cut in order to maintain continuity. The
length of the grounding strap will depend upon the
number of units being installed and/or the amount of
copper pipe being replaced with poly. See Figure 1.

In all cases where metal pipe was originally used and
is later interrupted by poly pipe or the Noryl bypass valve as in
Figure 1 or by physical separation as in Figure 2, an approved
ground clamp with no less than #6

copper conductor must be

used for continuity,

to maintain proper metallic pipe bonding.

Check your local electrical code for the correct clamp and cable
size.

Figure 2

Outside Water Line For Outside
& 3rd Tap Comes From Meter

Filtered Water Line in Home

Unfiltered Water Bypass
Loop Cut & Capped

Ground Strap Required
Because of Break in Continuity

Figure 1

Electrical Panel

Ground Strap

Poly Pipe

Ground
From
Panel

Poly Pipe

Softener
c/w Plastic Bypass

Copper Pipe

Water Meter

2

Installation Instructions Cont’d

1. Position the conditioner on a flat surface, near a drain and a 115 volt AC outlet. The unit is provided with a 24V
adapter.

2. Study the layout of the present water lines and drains in order that you can determine the best location for your water
conditioner and plan your installation. Your conditioner must not be subjected to freezing or to water temperatures
above 110°F which will void the warranty.

3. All plumbing should be done in accordance with local plumbing codes. The pipe size for the drain line should be a
minimum of 1/2”. However, a 3/4” drain line is required where backwash flow rates are in excess of 7 gpm or the
length of the drain line is greater than 20 feet.

4. Soldering joints near the drain must be done prior to connecting the drain line flow control (DLFC). Leave at least 6”
between the DLFC and the solder joints when soldering pipes that are connected on the DLFC. Failure to do this
could cause interior damage to the DLFC.

5. Teflon tape is the only sealant to be used on the drain fitting.

6. Make sure that the floor is clean and level beneath the salt storage tank.

7. Place approximately 1” of water above the grid plate. If a grid is not utilized, fill to the top of the air check in the salt
tank. Do not add salt to the brine tank at this time.

8. On units with a bypass, place in BYPASS position. Turn on the main water supply. Open a cold soft water tap nearby
and let run a few minutes or until the system is free from foreign material (usually solder) that may have resulted from
the installation. Once clean, close the water tap.

9. Place the bypass in the SERVICE position and let water flow into the mineral tank. When water flow stops, slowly
open a cold water tap nearby and let run until the air the air is purged from the unit.

10. Plug unit into an electrical outlet. NOTE: all electrical connections must be connected according to local codes.

Figure 3