In-Line Heater - MTI Designer Series Installation And Operation Manual

Installation and Operational
Cleaning System Installation
Simple Touch® Cleaning System
Tubs equipped with Simple Touch require a fill spout and hot and cold valves. MTI does not provide mixing valves or filling spout with
Simple Touch.¹ A Wilkins Dual Check Valve is installed on the system to meet backflow prevention requirements in most areas of the
country.² Check local codes, as some areas of the country require additional backflow prevention. An ACME in-wall atmospheric vacuum
breaker (AVB) is provided with Simple Touch.
Simple Touch Connection
1. Tee off cold water supply and connect line to the ½" copper line of the solenoid valve (Fig. 9a). Maximum pressure to solenoid valve
must not exceed 80 PSI. DO NOT connect the solenoid to the hot water line. The warranty on the solenoid valve will be voided if
connected to the hot water line.
2. Install a shut-off valve between the water supply and solenoid valve for any future servicing.
3. Plug in Simple Touch control box to 110VAC, GFCI protected outlet.
Detergent Dispenser / Air Volume Control Installation
Detergent dispenser doubles as the main whirlpool air volume control adjusment device.
4. Find the detergent dispenser connected to flex pipe wrapped and labeled under tub deck with packaged couplings.
5. Sever the flex line on the dispenser to install in desired location. Mount the dispenser within reach of the bather.
6. Shorten flex hose to eliminate any dips in the line between the detergent dispenser and the whirlpool plumbing. Cleaning solution
must be able to flow straight into the rigid PVC fitting at the tub.
7. Use provided coupling to reassemble flex line. Glue flex line using PVC cement. Allow PVC cement to dry according to label.
8. Test Fill-Flush and whirlpool operation. Turn air volume control counter-clockwise to increase pressure of the jets.
Hand-Held Shower Installation
IMPORTANT: Diverter line for hand shower must be installed inline before the Wilkins check valve.
Secondary Backflow Prevention (AVB) Installation
Some areas of the country require addtional backflow prevention above the waterline of the tub.² The provided vacuum breaker requires
access through the wall and a spill tray.
IMPORTANT: AVB must be installed inline before the Wilkins check valve.
Check local codes, as some areas of the country require a deck-mounted backflow prevention device.²
Wilkins Valve
In-Line Heater Installation
In-line heaters are designed to maintain bath water temperature up to 104º F. They are not designed to heat cooled or cold water. Check
order details and electrical specifications before installing.³ Both pump and in-line heater must be plugged into a dedicated circuit on
110VAC for system to operate properly.
In-line Heater For Whirlpools
Heater must be plugged into a 15 AMP GFCI protected outlet.
HeatSoak In-line Heating System For Soakers and Airbaths
The in-line heating system for soaking tubs and airbaths includes a heater and circulating pump, requiring 20 AMP, GFCI protected outlet.
The pressure wire connector located on the exterior of pumps and heaters permits connection of a No.8 AWG (8.4mm) solid copper
bonding conductor to all other electrical equipment and exposed metal in the vicinity as needed to comply with local requirements (see
Fig. 1 on pg. 6).³
1 MTI will not be responsible for any costs involved with removing or reinstalling the tub due to leaks associated with improper drain or valve installation.
² It is the responsibility of the installer to comply with local plumbing codes regarding backflow prevention.
³ Installer/product owner is responsible for complying with all industry codes and requirements.
Manual •
(Fig. 9a on p. 15)
(Fig. 9a on p. 15)
(Fig. 9b on p. 15)
Wilkins Valve, model 700XL
ASSE® Listed 1024. CSA®
20 GPM at 45 PSI
Collection •
Designer
(continued)
Cash Acme AVB ASSE1001
Certified CSA B64.1.1
Whirlpool and Airbaths
Cash ACME® AVB
mtibaths.com / 13