Product Overview
Note: Fixed Shipping Rate does not apply to Hawaii or Alaska.
SCALA1 5-55 (110V or 220V)
Product number 99631754
(A small, 2 - 4 gallon pressure tank is recommended in applications where a water heater is in place to allow for thermal expansion in the line. A small pressure tank will also prevent cycling when a leak is present in the piping, extending the life of the pump.)
- Plumbing: Pressure Boosting
- Residential groundwater intake
- Residential water pressure boosting
- Residential rainwater harvesting
The Grundfos SCALA1 is a fully integrated, all-in-one, self-priming, compact waterworks designed for pressure boosting in domestic and light-commercial applications, such as garden irrigation or pressure boosting to one and two family houses and apartments. In city water or well water applications, use a PRLV-20, Pressure Reducing Limit Valve on the suction side of the pump to 20 PSI to prevent inbound water from exceeding the 29 PSI max inlet pressure. In applications where pump is near the home or point of use, it may be necessary to install a PRLV-60, Pressure Reducing Limit Valve on the discharge side of the pump to reduce the outlet pressure so as not to over-pressurize pipes during low flow usage.
*NOTE: We recommend using a small (2-4 gallon) expansion tank (sometimes referred to as a "pressure tank") with any single speed, on demand booster pump even though it isn't required. It can save the pump from cycling (which is a bad thing for pumps) if you have a small leak or a toilet running somewhere that you aren't aware of. Expansion tank pressure should be set at 48 PSI for SCALA1 5-55.
Specifications
| Product name | SCALA1 5-55 |
| Product No. | 99631754 |
| EAN | 5713832222070 |
| Price |
Technical
| Rated flow | 23.2 US GPM |
| Rated head | 82.03 ft |
| Maximum head | 180.5 ft |
| Primary shaft seal | BVBP |
| Approvals | CCSAUS,CSA_LLC,PROP65 |
| Approvals for drinking water | CSA DW |
| Curve tolerance | ISO9906:2012 3B |
| Model | A |
| Start pressure | 40.61 psi |
Materials
| Pump housing | Composite |
| Impeller | Composite |
Installation
| Range of ambient temperature | 32 .. 131 °F |
| Maximum operating pressure | 116 psi |
| Maximum permissible inlet pressure | 29 psi |
| Type of inlet connection | NPT(M) |
| Type of outlet connection | NPT(M) |
| Size of suction port | 1 inch |
| Size of outlet port | 1 inch |
| Pressure rating for connection | PN 8 |
Liquid
| Pumped liquid | Water |
| Liquid temperature range | 32 .. 113 °F |
| Selected liquid temperature | 68 °F |
| Density | 62.29 lb/ft³ |
Electrical data
| Length of power cable | 4.92 ft |
| P1 max. | 1250 W |
| Rated power - P2 | 1.15 HP |
| Main frequency | 60 Hz |
| Rated voltage | 1 x 115 V or 1x 220 V |
| Maximum current consumption | 11.6 A |
| Enclosure class (IEC 34-5) | X4D |
| Insulation class (IEC 85) | F |
| Power plug | Type B (NEMA 5-15) |
| US plug 115V or 220V |
PRO Priming TIP: With the pump turned on, open the drain port on the bottom, front side by hand enough until it begins to leak water and push the air out of it. It’s likely that the pump has not been properly primed yet and needs to get all the air out of it.
Open and close a ball valve (or the nearest valve if you don’t have a ball valve installed on the pump outlet) on the discharge side of the pump gradually so that it works the air out of the line. You’ll want to have the pump push against the closed valve and then an open valve and a closed valve and an open valve again gradually opening and closing the valve until the pump begins working properly at which point you can leave the valve open.
You’ll also want to screw the drain port back on all the way hand tight. Do not overtighten. Once the pump is fully primed, it should begin working as intended when you open and close valves for use.
