USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
5
Water Piping
These heaters are designed for use with spa/hot tub water only, as furnished by municipal water distribution systems. The warranty does not cover its use
with mineral water, sea, salt or other non-potable waters.
*Minimum piping to be used is 1 ½” I.D. (interior dimension). No valve or restriction is to be installed in line between heater outlet and spa unless the heater is
below spa level. In that case, a wing check valve that does not include a shut-off feature or function should be installed to prevent back flow. No Hartford loop
is required.
Optional CPVC use:
CPVC piping may be used on both inlet and outlet threaded heater connections. A.G.E. silicone seal or similar sealant with a high elasticity must be used to
compensate for temperature expansion and contraction of the dissimilar materials at the water connections, otherwise leakage will occur.
Typical Piping Diagram
NOTE: No water shut off valves are to be installed between the heater outlet and the return to the spa/tub.
Electrical Connections
Before any electrical connections are made, be sure that the heater is full of water and that any valve in the cold water supply line is open. Check the rating
plate and wiring diagram before proceeding.
NOTE: Customer to furnish disconnect switch. Wire in accordance with attached wiring diagrams. Field wiring, power supply conductors, and branch circuit
protectors must be installed by a qualified electrician in accordance with Article 680 of the National Electrical Code ANS/NFPA No. 70- (latest edition) and in
accordance with local codes and/or electric utility requirements. It is recommended that the heater supply circuit be protected by a ground-fault circuit- inter-
rupter (GFCI) in accordance with Article 680-5(b) of the National Electrical Code. A wire connector marked “GROUND” is provided within the control box. To
reduce the risk of electrical shock, connect this terminal or connector to the grounding terminal of the electrical service or supply panel with a continuous
green insulated copper wire equivalent in size as specified for Ground Wire Size on the previous page. Grounding must be in accordance with Article 250 Part
G. for bonding requirements of the National Electrical Code. Besure all connections are clean and secure.
By-pass
Unions
Outlet
Inlet
Electric Spa
Heater
Gate Valve
(Inlet Only)
Filter
Pump
Spa/Tub
Drain
Valve
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