universally ground isolated due to their inherent signal sensitivity.
2. Check to ensure that the unit is set on foam:
AIR INTAKE DAMPER:
The combustion air intake damper uses a brushless 24VAC motor. It is also a 2-wire motor with no ground wire. Because of these two items, the motor and casing is effectively isolated from the controller and GARN unit.
UNITS WITHOUT ELECTRIC HEATING ELEMENTS:
FULL ISOLATION (OPTION 1)
3. Isolate the blower motor with a blower motor isolation kit: (Part #: P-0125 on www.garnparts.com). Installation instructions for the isolation kit can be found on page 85.
1. DO NOT connect an independent ground rod to the GARN unit:
4.Dielectrically isolate any pumps directly connected to the GARN unit:
A pump is dielectrically isolated if there is a means that breaks the metal-to-metal contact between the pump housing itself and the GARN unit. Examples of di-electric isolation include: dielectric unions, any length of PEX, or isolation valve flanges attached
GARN WHS 1000 and WHS 2000 Manual © HY-C Company LLC - September 2024
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