WaterFurnace Envision Hydronic (NSW) - Manual (Page 12)

12
NSW INSTALLATION MANUAL
0
5
10
15
20
25
30
35
0 5 10 15 20 25 30 35
Feet of Head
GPM
UP26-99F
UP26-64BF
UP15-42B7
0
10
20
30
40
50
60
70
0 5 10 15 20 25 30 35
Feet of Head
GPM
UP26-99F (2 pumps)
UP26-64BF (2pumps)
Accessories and Options
Water Connection Kits (Field Installed)
Water connection kits have been designed to facilitate load-
side and loop-side water connections.
Earth Loop Pump Kit (Field Installed)
A specially designed one or two-pump module provides all
liquid flow, fill 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 (field
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 24P501A04
(Grundfos UP15-42B7) and EWPK2 (Grundfos UP26-64BF)
are bronze body pumps. Bronze 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 flow requirements. If the
flow requirements are outside the pump curve, an alternate
pump will need to be obtained to maintain the necessary flow.
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 flicker, reduces start-up noise,
and improves the compressor’s start behavior. IntelliStart is
available in a field retrofit 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
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.
Two Pump Curve: UP26-64BF and UP26-99F
Single Pump Curve: UP15-42B7, UP26-64BF, and UP26-99F
• HKC8S - 1 inch x 24 inch stainless steel braided hose kit
• HKC10S - 1
1 ⁄
4
inch x 24 inch stainless steel braided hose kit