27
PRESSURE RELIEF VALVE:
Some local building codes require a pressure relief valve for pool/spa heat-
ers. The header has a 3/4” port which can be used for this purpose (see Figure
24 for location of port). A 3/4” pressure relief valve having a discharge capac-
ity 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 work-
ing pressure. Remove the factory-installed pipe plug, and install the pressure
relief valve using a suitable amount of pipe thread sealant or tefl 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 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.
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 19. The heater must include a defi 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
Code (NEC) and local electric codes. The NEC contains no standards requiring Ground-Fault Interrup-
tion protection (via GFI Circuit Breaker or otherwise) of “Fixed” or “Stationary” equipment, under
article 680: Swimming Pools, Fountains, & Similar Installations.
BONDING:
CAUTION
- This heater must be connected to a bonding grid with a solid copper conductor wire
gauge 8 AWG or larger. All Trane pool/spa heaters are designed for copper conductors only. The
National Electrical Code (NEC), and most other codes require that all metallic components of a pool
structure, including reinforcing steel, metal fi ttings and above ground equipment, be bonded together
with a solid copper conductor wire gauge 8 AWG or larger. The heater, along with pumps and other
pool equipment must be connected to this bonding grid. A bonding lug is provided on the side of the
heater to ensure that this requirement is met.
Figure 17: Drain valve and
relief valve locations
Pressure
Relief Valve
Drain
Valve