P/N 475114 Rev. F 8/2020 MASTERTEMP 125 Pool and Spa Heater Installation and User’s Guide
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HEATER BONDING
WARNING
A bonding lug is provided on the heater located on the upper side of the base by the plumbing side
(see Figure 28). The heater along with the pool system equipment must be bonded together. Using
solid copper conductor not smaller then 8 AWG to reduce voltage gradients in the pool area.
Not properly bonding and grounding the heater increases the risk of electrical shock. Damage to
the heat exchanger can occur from electrolysis when the heater is not bonded properly.
All wiring must be in accordance with all applicable codes.
The heater, when installed, must be electrically grounded and bonded in accordance with local
codes or, in the absence of local codes, with the National Electrical Code or the Canadian
Electrical Code (as applicable).
Figure 26. MasterTemp Heater (Exhaust Side)
BONDING
LUG
Section 1. Installation
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