SPA HEATER INSTALLATION, OPERATION AND MAINTENANCE

1 SPA HEATER . INSTALLATION, OPERATION . AND MAINTENANCE . MODELS: ST SERIES. & 11kW. 240V SINGLE PHASE. BEFORE YOU BEGIN. CHECK ALL ELECTRICAL CONNECTIONS TO ALL COMPONENTS. WITHIN THE HEATER FOR TIGHTNESS. CONNECTIONS CAN. BECOME LOOSE DURING SHIPMENT AND HANDLING. CAUTION. THE ELECTRICAL INSTALLATION MUST BE IN ACCORDANCE. WITH ARTICLE 680 OF THE NATIONAL ELECTRICAL CODE. WARNING. Only qualified personnel, as defined by National Electric Code Article 100, should install and maintain this equipment. Unauthorized alteration or improper MAINTENANCE of this unit may release the manufacturer from any warranty claims. The installation must be in accordance with the instructions in this manual and applicable local plumbing and electrical codes.

2 Publication 10-2012. DESCRIPTION ELECTRICAL INSTALLATION. Coates Spa Heaters are intended for use on spas or hot tubs having a forced water circulation system. The electrical supply power must be single phase, The water flow through the HEATER should be at least 15 GPM but should not exceed 80 GPM. Higher CAUTION. flow may damage the HEATER . An external bypass should be installed to limit the flow to within this THE ELECTRICAL INSTALLATION MUST BE IN. ACCORDANCE WITH ARTICLE 680 OF THE. range. NATIONAL ELECTRICAL CODE (NEC). INSTALLATION 2 wire, 240 VAC. The supply must be protected by a ground fault circuit interrupter (GFCI) in WARNING accordance with NEC Article 680. An electrical disconnect with over-current protection must be Only qualified personnel, as defined by National provided.

3 An insulated ground conductor must be Electric Code Article 100, should install and provided. See Figures 3A or 3B and Table 1 for maintain this equipment. Unauthorized alteration or improper MAINTENANCE of this unit may release supply wire and circuit sizing. A lug has been the manufacturer from any warranty claims. The provided for attachment of the BONDING wire per installation must be in accordance with the the NEC Article 680-22, (a)(4). This lug is located instructions in this manual and applicable local between the inlet and outlet pipes of the HEATER plumbing and electrical codes. 2. CHECK ELECTRICAL CONNECTIONS TO ALL 5. COMPONENTS within the HEATER for tightness. 3. F C HEATING.

4 MENU. These can become loose during shipment and 1. TEMPERATURE. CONTROL. handling. ELEM. FLOW. 9 4. ING. AT. PHYSICAL PLACEMENT. HE. C. F. RE. TU. NU RA L. ME. MPE RO. TE CONT. OW. FL.. EM. EL. The Coates Spa HEATER is suitable for indoor or outdoor installation. See Figure 1 for piping RE. SE. T OU. TL. ET. INLET/OUTLET PVC UNIONS. 1 6 ID ACCEPTS 1 1/2 PVC PIPE. connections and Figures 3A or 3B for electrical NOTE: TEMP. CONTROL BULB 10. INLE. T. OD ACCEPTS 2" PVC FITTINGS. connections. The HEATER should be securely ON LOWER LEG;. TEMP LIMIT BULB. ON UPPER LEG. RESET BUTTON. mounted to a smooth, flat surface. It may be 8 7 Coates Spa HEATER Assembly conveniently located next to the filtration equipment.

5 CSTILL1C. Figure 2 Coates Spa HEATER Assembly. Leave minimum clearances of 9 inches on the Refer to Table 2 for part description. left for element removal, 12 inches on the front for MAINTENANCE , 6 inches on the back for service entrance and the right side will be determined by the plumbing configuration used. CAUTION. DO NOT INSTALL ANY SHUT-OFF. ** NOTICE ** VALVE ON DISCHARGE SIDE OF. HEATER . A SWING CHECK. VALVE IS PERMITTED. NO PRESSURE RELIEF. VALVE IS SHIPPED WITH Exception: If a 30 psi ( Kg/cm2 ). THIS HEATER AND NONE pressure relief valve is installed CHECK. IS REQUIRED PER UL between the HEATER and valve , the VALVE. STD 1261. DO NOT valve may be of the shut-off (ball or INSTALL SHUT OFF gate) type.

6 POOL. VALVE BETWEEN THE or FILTER. HEATER AND POOL OR SPA. SPA. A CHECK VALVE IS COATES POOL. ACCEPTABLE AND IN HEATER . ACCORDANCE TO UL STD. PUMP BALL OR GATE. 1261 REVISED JULY 1983. DRAIN VALVE. VALVE BALL OR GATE. VALVE. FIGURE 1 PIPING DIAGRAM. CONTROL PANEL ERROR CODE: The display will read Err when it detects a A. INDICATOR LIGHTS problem with the temperature sensor. This can be The control has two indicator lights. The lights are caused by a faulty sensor or a loose connection as follows: between the sensor and the temperature controller. STATUS LIGHTS. CAUTIONS AND WARNINGS. LIGHT DESCRIPTION (when Illuminated) 1. Be sure to check all cautions and FLOW Sufficient water flow through HEATER .

7 Warnings in this manual and as displayed on the HEATER labels before operating or ELEMENT Heating elements are powered. performing and MAINTENANCE on these heaters. B. DIGITAL THERMOSTAT CONTROL 2. Do not remove the HEATER cover while For heaters equipped with a digital thermostat. The electrical power is applied to the HEATER . digital thermostat control which measures the Power must be interrupted at the HEATER temperature of the water as it enters the HEATER has supply circuit breaker or disconnect a MENU button, up and down adjustment buttons, switch. and an LED display. The desired water temperature 3. The MIN setting on the temperature (set point) is controllable between 40 F and 104 F control dial is an OFF position.

8 The HEATER (5 C and 40 C). The set point may differ from the will not operate at this setting regardless actual water temperature at the pool or spa due to of water temperature. heat loss in the piping. STARTING THE HEATER . MENU: The MENU button cycles through the three menu - CAUTION - items: Measured water Temperature (default), SET Do not operate HEATER without water . POINT and F/ C. 1. Ensure that HEATER case is properly ADJUSTING THE SET POINT: grounded, and bonded. 2. Fill the system with water and start the Press one of the following buttons; MENU, or . circulating pump. The display will momentarily blank and then the 3. Turn on electrical power at the HEATER current set point will be displayed.

9 Press the or supply circuit breaker. button to change the set point. Hold the button 4. Set the temperature control to desired down for rapid temperature changes. water temperature and adjust accordingly after the temperature has stabilized. DO. The set point will be saved and the display will return NOT EXCEED 104 F. to the measured temperature after two seconds of inactivity. STOPPING THE HEATER . OPERATION : Turn off electrical power at the HEATER supply In the measured temperature mode, the water circuit breaker before stopping the circulating temperature in the HEATER is displayed. The LED pump. corresponding to the current temperature scale will MAINTENANCE . be illuminated. If the HEATER is calling for heat the HEATING LED will be illuminated.

10 1. Keep the HEATER clean. 2. If high temperature causes the limit FAHRENHEIT TO CELCIUS: thermostat to cut off the electrical power, Press the MENU button twice and the current turn off power at disconnect switch and temperature scale will be displayed ( F or C ). Press determine the cause before resetting the the or buttons to toggle between F and C. switch. A water temperature drop is required to allow resetting of the manual The temperature scale will be saved and the display reset high temperature limit. will return to the measured temperature after two seconds of inactivity. 3. If leaks develop in the HEATER or connecting piping, shut down the HEATER and repair defective connections.