Air Handler
14
Note:
The Temperature Rise Tables can also be used to determine the air handler airflow
delivery. When using these tables for this purpose, set the room thermostat to maximum heat and
allow the system to reach steady state conditions. Set two thermometers, one in the return air inlet
and the other one in the supply air outlet.
4.8.1 “HNRd” Electric Heater Kits Available
Table 11
SN.
Kit#
Description
Ref. Air Handler use
1
HNRd5-D
Circuit Breaker, 5kw Heat Strip
18,24,30,36,42,48,60
2
HNRd10-D
Circuit Breaker, 10kw Heat Strip
18,24,30,36,42,48,60
3
HNRd15-D
Circuit Breaker, 15kw Heat Strip
30,36,42,48,60
4
HNRd20-D
Circuit Breaker, 20kw Heat Strip
36,42,48,60
4.8.2 “HNRd” Heater Kits Installation
CAUTIONS
:
(1) Ensure that all power supply is disconnected prior to installing the heater kit.
(2) A means of strain relief and conductor protection must be provided at the supply wire
entrance into cabinet.
(3) Use copper conductors only.
(4) Installation must follow national electric code and other applicable codes.
(5) If this appliance is installed in an enclosed area such as a garage or utility room with any
carbon monoxide producing appliance, ensure the area is properly ventilated.
1) Refer to Table 11 for appropriate HNRd heater kit.
2) Check any physical damage, do not install damaged heater kit.
3) Remove the upper access panel from air handler.
4) Remove cover plate from air handler.
5) Slide the heater kit in to the slot and secure element plate with previously removed screws.
6) Insert power leads into the circuit breaker lugs or stripped red and black wires (For heater
kit without circuit breaker) and tighten.
7) Connect ground wire to ground lug.
8) Break out appropriate area of the plastic circuit breaker cover on the access panel of the
air handler.
9) Replace access panel and check operation.
Heater kit
Cover plate
Bolt
Circuit breaker
