WarmWire Order Instruction and Information

WarmWire Order Instruction and Information

By SunTouch® A division of Watts Water Technologies, Inc.

WarmWire can be easily sized for any project.

Overview

• Evaluate how many square feet of floor warming you wish to do.

Do not put under cabinets or appliances.

Leave the wire at least 4″ away from the toilet wax ring and 2″ – 3″ away from your walls.

Do install up to the toe-kick in front of kitchen or bath cabinets so your toes stay warm.

Data & Coverage Area 120 Volt
Model No.
Sq. Ft @ 2″ O.C.
Sq. Ft @ 2.5″ O.C.
Sq. Ft @ 3″ O.C.
Wire Length Ft.
Amperage Draw
Resistance (ohms)
81004574
8
10
12
47
1.0
108-132
81004575
12
15
18
71
1.5
72-88
81004576
16
20
24
94
2.0
52-64
81004577
20
25
30
118
2.5
41-51
81004578
24
30
36
141
3.0
33-40
81004579
28
35
42
165
3.5
28-34
81004580
32
40
48
188
4.0
24-30
81004581
36
45
54
212
4.5
22-27
81004582
40
50
60
235
5.0
19-24
81004583
48
60
72
282
6.0
16-20
81004584
56
70
84
329
7.0
14-17
81004585
64
80
96
376
8.0
12-15
81004686
72
90
108
423
9.0
11-13
81004687
80
100
120
470
10.0
9-12

• 2″ o.c. delivers 15 Watts per sq. ft. – Concrete basement slabs, sunrooms, high heat loss areas, etc.
• 2.5″ o.c. delivers 12 Watts per sq .ft. – Bathrooms, kitchens, dining/living areas, etc.
• 3″ o.c. delivers 10 Watts per sq. ft. – Hallways, entries, low heat loss areas, etc.

Data & Coverage Area 240 Volt
Model No.
Sq. Ft @ 2″ O.C.
Sq. Ft @ 2.5″ O.C.
Sq. Ft @ 3″ O.C.
Wire Length Ft.
Amperage Draw
Resistance (ohms)
81004588
16
20
24
94
1.0
217-268
81004589
24
30
36
142
1.5
144-176
81004590
32
40
48
188
2.0
105-128
81004591
40
50
60
236
2.5
83-102
81004592
48
60
72
282
3.0
66-81
81004593
56
70
84
330
3.5
57-69
81004594
64
80
96
376
4.0
49-61
81004595
72
90
108
424
4.5
44-54
81004596
80
100
120
470
5.0
39-48
81004597
96
120
144
564
6.0
33-40
81004598
112
140
168
658
7.0
28-34
81004599
128
160
192
752
8.0
24-30
81004601
144
180
216
846
9.0
22-27
81004602
160
240
240
940
10.0
19-24

Click on our Flooring Calculator to calculate not just how many floor heating you need, you can also see how much it will cost you daily or yearly, and adjust your uses base on your heating budget.

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Pick a “spacing factor” (2″, 2.5″, or 3″ on center). Below are guidelines for application and respective spacing recommendations.

***The 2.5″ spacing is most commonly used.

Follow these simple steps in calculating heated area and wire length(s):

1. Calculate the total wall-to-wall area of the room, then subtract built-ins like vanity, tub, toilet, refrigerator, etc. Don’t quote the area behind toilet and stay about 3″ 4″ from the wax ring.

_____________ total area

_____________ built-ins

= _____________ sq. ft

2. a) For rooms with built-ins, such as kitchens and baths, multiply the above area by 0.90. This is the heated area.

________ x 0.90 = ________ sq. ft.

b) Or for open areas, such as family rooms and sunrooms, take out 6″ – 12″ around the perimeter of the room and calculate the remaining area. This is the heated area.

3. Decide if you need 120 VAC or 240 VAC WarmWire. In general, use 120 VAC for heated areas 150 sq. ft. or less and 240 VAC for areas larger than 150 sq. ft. (It’s okay if you don’t know at this time, because 120 VAC WarmWire is basically the same

cost as 240 VAC.) ___ 120 VAC ___ 240 VAC

4. Decide on 2″, 2.5″, or 3″ o.c. wire spacing (see above guidelines).

5. Look at the WarmWire tables to match the heated area with the desired wire spacing and proper voltage.

Round down to the nearest size; its always best to have too little, than too much.

You can always adjust the spacing in the field to make up the difference.

Remember, you can use multiple cables if your area is larger than the available spool lengths. You can also use multiple cables for smaller areas. For instance, if you are using 2.5″ spacing, and need to heat 60 sq. ft., select one 25-sq.ft. cable and one 35-sq.ft. cable.

Accessories and Controls
Model No.
Description
500670 SB – 120/240
Thermostat Programmable SunStat Pro120/240 VAC
500675 SB – 120/240
Thermostat Non-programmable SunStat, 120/240 VAC
500550 – 120
Thermostat Non-programmable FloorStat, 120 VAC
500680 – 120/240
SunStat Relay Control 120/240 VAC
321301
WarmWire Strap, 25′ length (approx. 40-50 sq.ft. coverage)
423250
LoudMouth Monitor
322722-120
Extra Power Lead 120 VAC
322722-240
Extra Power Lead 240 VAC
840213080037
Heating Wire Repair Kit
840213091095
Temperature Sensor 15 ft. long
840213081515
Non metallic trowel
200301WDM
Mat Installation Kit
840213018382
Double-sided extra strong tape 108 Ln. ft

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Controls and Accessories

The newly-redesigned SunStat controls are now even more elegant. Loaded with more features, they are easier than ever to install and program
due to the new two-part “control face” and “power base” design.

Both SunStat’s are sold with power bases as a single item; however, control faces
and power bases can be ordered separately, if desired.

Having the thermostat in two parts makes it easier to wire line voltage, the floor sensor and our new remote thermostat control.

The control face
is easily removed from the power base allowing upgrade from non-programmable to programmable or vice versa. Because a built-in capacitor holds
about 2 hours of power, you can also remove the face, program it at the kitchen table, and then reattach it to the power base.

Programmable SunStat Control

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Dimensions:

    • Face Size: – Width 2 7/8″ – Height : 4 9/16″ – Depth : 13/16″ 

    • Overall Size: – Width 2 7/8″ – Height : 4 9/16″ – Depth: 1 3/4″

The Programmable SunStat is both elegant and intelligent.

Available for both 120 VAC and 240 VAC, it accepts programming for three set-points: Comfort, Economy (set-back), and Vacation. Features include:

(1) A floor sensor that directly senses floor temperature
(2) A 16-amp capacity controlling up to 150 sq. ft. of
120-VAC, or 260 sq. ft. of 240-VAC WarmWire spaced
at 2.5″ o.c.
(3) Built-in ground fault protection with no need for a
separate GFCI (in most code areas)
(4) Large digital display
(5) Temperature range of 40° to 104°F
(6) Temperature display in °F or °C
(7) On/Off switch
(8) Connection for new Remote SunStat Control

Non Programmable SunStat Control

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Dimensions:

    • Face Size: – Width 2 7/8″ – Height : 4 9/16″ – Depth : 13/16″ 

    • Overall Size: – Width 2 7/8″ – Height : 4 9/16″ – Depth : 1 3/4″

The non-programmable SunStat is very simple to operate. Just push the on/off button and turn the dial to set the floor temperature. It has several other features:

(1) A floor sensor that directly senses floor temperature
(2) Built-in ground fault protection with no need for a separate GFCI (in most code areas)
(3) Temperature range of 59° to 95°F
(4) 16-amp capacity to control up to 150 sq. ft. of 120-VAC WarmWire spaced at 2.5″ o.c.
(5) Connection for new Remote SunStat Control

Non Programmable SunStat are recommended for a smaller spot warming mats.

This device uses a floor sensor to maintain the precise temperature you select for your tile.

LoudMouth™ Monitor

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The LoudMouth sounds an alarm if the wires are cut or damaged, allowing for easy repair before they are covered with mortar and tile.

Use it during the entire WarmWire installation to monitor the heating elements and give yourself the assurance of a quality installation. It’s a must for every job.

Our newly redesigned LoudMouth is better than ever. It has a bright new look and sports several new features:

(1) 9-V battery power (120 VAC before)
(2) A much louder alarm
(3) An on/off switch
(4) Green light to indicate operation and red light to indicate damage
(5) Test button to make sure it’s operational.

Repair Kit

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This simple and safe kit repairs heating elements damaged or severed during installation.

Detailed written instructions included.

WarmWire Strap

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WarmWire Strap is used to hold WarmWire in place at the desired spacing.

Anchor it at 3′ 4′ intervals across the floor.

Order one 25′ long coil per 40 – 50 sq. ft. of floor.

WarmWire design and sizing considerations

WarmWire can be used to warm the floor in areas as small as a powder room or as large as an entire home.

There really is no limit. A single cable can heat areas as large as 240 sq. ft. Even larger rooms can be warmed with cables wired in parallel.

WarmWire can provide all the heat necessary for a room, as well as just warm the floor. It delivers over 40 BTUH per square foot, which is quite a bit of heat. Most rooms need far less than this. So, if you have a room where you want WarmWire to be the sole source of heat, it will likely do the job.

Simply calculate the room’s heat loss and compare it to the output of WarmWire shown on the next page.

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WarmWire™ Features:

• Single point connection
• Insulated with high-performance ETFE
• Strengthened with Aramid reinforcing
• Protected with stainless steel jacket
• Available in both 120 VAC and 240 VAC
• Sizes available up to 240 sq. ft.
• UL Listed in Canada and the USA
• Ultra-low EMF
• Grounded from one end to the other

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Click here for SunTouch VIDEO Library

SunTouch vs. Product A SunTouch vs. Product B

SunTouch Floor Heating Mat Links

SunTouch Mats Spec and installation SunTouch Mat SpecificationUnderfloor Spec and Installation

SunTouch Floor Heating Spool Links

SunTouch WarmWire Installation Guidelines SunTouch WarmWire StrapWarmWire Installation GuidelinesWarmWire Order Instruction and Information

Heating Controls Links

Programmable SunStat SpecOwner’s Manual Programmable 500670-SBOwner Manual Non Programmable 500675

SunStat Non Programmable Spec SunStat Relays ControlLoudMouth Operating Instruction

Misc SunTouch Links

SunTouch 25 year Limited Warranty EMF Electromagnetic fields Frequently Asked Questions Repair Heating Wire Suntouch Low Price Guarantee

4 thoughts on “WarmWire Order Instruction and Information”

  1. I have a question can I do a hundred sq ft in my kitchen and a fourty sq ft in my laundry room on the same 240 volt circuit and same thermostat

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