WaterFurnace Envision NSW018 series Installation information - Accessories and Options
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NSW INSTALLATION MANUAL
Accessories and Options
Earth Loop Pump Kit (Field Installed)
A specially designed one or two-pump module provides all
liquid fl ow, fi ll and connection requirements for independent
single unit systems (230/60/1 only). The one-pump module
is capable of 20 feet of head at 16.0 GPM, while the two-
pump module is capable of 40 feet of head at 16.0 GPM.
Hot Water Generator (Factory Installed, NSW040,
NSW050, NSW060, and NSW075 Only)
An optional heat reclaiming hot water generator coil
constructed of vented double-wall copper construction
suitable for potable water is available. The coil is factory
mounted inside the unit. A DPK5 pump kit is required (fi eld
installed), which includes a DHW tank connection and a
temperature limit pump shutoff.
Load-side Pump Kit (Field Installed)
Four (4) load pump kits are available to provide all liquid flow
requirements for independent single unit systems (230/60/1
only). WaterFurnace part number
24S516-10
(Grundfos
UPS15-42RU) is a composite body pump.
EWPK2
(Grundfos
UP26-64BF) is a bronze body pump. Bronze or composite
body pumps should be used when water conditions exist that
are not compatible with cast iron or for applications such as
domestic water heating. WaterFurnace part number EWPK1
and EWPK3 come with a cast iron body pump (Grundfos
UP26-99F) that can be used for hydronic heating applications.
Calculate the system pressure drop then refer to the pump
curves to select the proper pump. All four of the WaterFurnace
pump kits can be used for hydronic heating applications as long
as they meet the fl ow requirements. If the fl ow requirements
are outside the pump curve, an alternate pump will need to be
obtained to maintain the necessary fl ow.
IntelliStart
®
The optional IntelliStart single phase soft starter will reduce
the normal start current (LRA) by 60-70%. This allows the
heat pump to go off-grid. Using IntelliStart also provides a
substantial reduction in light fl icker, reduces start-up noise,
and improves the compressor’s start behavior. IntelliStart is
available in a fi eld retrofi t kit (WaterFurnace part number
IS60RKL
or
IS60RKS
) or as a factory installed option for all
Envision and Synergy3D units.
Water Connection Kits (Field Installed)
Water connection kits are available to facilitate loop side
and load side water connections.
• MA4FPT
-
Forged brass 1” MPT x 1” FPT square street
elbow with P/T plug for NSW018-NSW040 water
side connections
• MA5FPT
-
Forged brass 1.25” MPT x 1.25” FPT square
street elbow with P/T plug for NSW050-NSW075 water
side connections
• 2-HVAC-1x24
-
1 inch x 24 inch stainless steel braided
hose kit
•
2-HVAC-1 1/4x24 -
1 1⁄4 inch x 24 inch stainless steel
braided hose kit
NOTE:
Never use piping smaller than 1 inch. Limit length of
pipe to 50 feet or less.
Type L Copper Tube
GPM
3/4
1
1-1/4
1-1/2
2
2
1.5
3
3.2
4
5.5
1.4
5
8.5
2.1
6
2.9
1.1
7
3.9
1.4
8
5.0
1.8
9
6.1
2.3
0.9
10
7.5
2.8
1.1
12
3.9
1.6
14
5.2
2.1
16
6.6
2.7
18
8.2
3.4
20
10.0
4.1
1.1
22
5.0
1.3
25
6.3
1.6
30
2.2
35
2.9
40
3.8
45
4.7
50
5.7
Type L Copper Pressure Loss
Ft of Hd per 100 ft
NOTE:
Standard piping practice limits pressure drop to 4
feet of hd per 100 feet in 2 inch and larger pipe.
UP26-64BF and UP26-99F Single and Two Pump Curve
UPS15-42RU Three-Speed Pump Curve
0
10
20
30
40
50
60
70
0
5
10
15
20
25
30
Feet of Head
GPM
UP26-64BF & UP26-99F Single and Two Pump
UP26-99F (2 Pumps)
UP26-64BF (2 Pumps)
UP26-99F (1 Pump)
UP26-64BF (1 Pump)
0
2
4
6
8
10
12
14
16
0
2
4
6
8
10
12
14
16
Feet of Head
GPM
UPS15-42RU 3-Speed Pump
UPS15-42RU (High)
UPS15-42RU (Med)
UPS15-42RU (Low)