Daikin 90 Plus AFUE - Page 58

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12. When confirming proper unit grounding, resistance should be
measured between the neutral (white) wire and one of the
burners. Resistance should be ___ ohms.
A. Less than 2 ohms
B. 10 ohms or less
C. 5 ohms
D. 2 ohms
13. When grounding a Daikin 90 Plus furnace in a basement, it’s
ok to use a section of gas pipe as a ground.
A. True
B. False (Ground from the furnace ground screw all the way back
to electrical panel; Never connect a ground wire to gas piping)
14. The use of ramping profiles and dehumidification features
require a jumper between “Y1” and ____ on the integrated control
module.
A. O
B. R
C. G
D. Y2
15. The first step taken when installing a dehumidistat to the
integrated control module, is to turn off power to the Daikin 90
Plus furnace.
A. True
B. False
16. When installing a ComfortNet system for Daikin 90 plus
furnace, 18 gauge thermostat wiring should be no longer than
____ feet between the indoor and outdoor units.
A. 25 Feet
B. 50 Feet
C. 100 Feet
D. 80 Feet
17. In the ComfortNet system, two way digital communication
between the thermostat and subsystems is accomplished by
connecting only four (4) wires between each subsystem.
A. True
B. False (two-wires for communication: 1 and 2)