Installation Guide

Pomona, CA Clemmons, NC Nashville, TN
Tel: [phone] www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
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DRAIN VALVE INSTALLATION (ASME MODELS ONLY):
If installing an ASME model heater, a 3/4” brass drain valve must be installed. A suitable drain valve is
included separately with all ASME heaters. Apply a suitable amount of pipe thread sealant or teon tape to
the threads and install as shown in Figure 21.
PRESSURE RELIEF VALVE (ASME MODELS ONLY):
If installing an ASME model heater, a 3/4” pressure-relief valve having a
discharge capacity greater than or equal to the Btu/hr input of the heater, and a
pressure rating equal to or less than the working pressure must be installed. See the
rating plate located inside the front access panel on the heater for the input rating
and working pressure. A suitable pressure relief valve is included separately with
all ASME heaters. Apply a suitable amount of pipe thread sealant or teon tape to
the threads and install as shown in Figure 21. Please note that the drain valve must
be installed before the pressure relief valve. Install the pressure relief valve with
the discharge connection facing the ground. If necessary, connect a pipe (of the
same size as the valve outlet) to the outlet and run it to a safe place of discharge.
Do not install any shut-off or restriction in this drain line.
PRESSURE RELIEF VALVE (NON-ASME MODELS ONLY):
Some local building codes require a pressure relief valve for non-ASME pool/spa heaters. The plastic header
has a 3/4” port which can be used for this purpose (see Figure 28 for location of port). A 3/4” pressure relief
valve having a discharge capacity greater than or equal to the Btu/hr input of the heater, and a pressure rating
equal to or less than the working pressure is recommended. See the rating plate located inside the front access
panel on the heater for the input rating and working pressure. If desired, you may order the pressure relief valve
from Hayward; order p/n CHXRLV1930. Remove the factory-installed pipe plug, and install the pressure relief
valve using a suitable amount of pipe thread sealant or teon tape on the threads. Install the pressure relief valve
with the discharge connection facing the ground. If necessary, connect a pipe (of the same size as the valve out-
let) to the outlet and run it to a safe place of discharge. Do not install any shut-off or restriction in this drain line.
ELECTRICAL SPECIFICATIONS :
WARNING: It is required that licensed electricians do all electrical wiring. Risk
of Electric Shock. Hazardous voltage can shock, burn, and cause death or serious
property damage. To reduce the risk of electric shock, do NOT use an extension cord
to connect unit to electric supply. Provide a properly located electrical receptacle. All
electrical wiring MUST be in conformance with applicable local and national codes
and regulations. Before working on heater, turn off power supply.
GENERAL INFORMATION :
Wiring connections must be made as shown in the wiring diagram found inside the heater cabinet, and as
shown in Figure 23. The heater must include a denite means of grounding and bonding. There is a ground
lug inside the control box and a bonding lug on the side of the heater.
MAIN POWER :
WARNING - Power connections supplied to the heater must be in accordance with National Electric
Figure 21: Drain valve and
relief valve locations
Pressure
Relief Valve
Drain
Valve
Figure 34