Return Ductwork; Return Air Filters; Electric Heat; Hkr Installation - Whirlpool WAHMS Installation Instructions Manual

Return Ductwork

NOTE: Do not terminate the return ductwork in an area that can
introduce toxic or objectionable fumes/odors into the ductwork.
The return ductwork is to be introduced into the air handler
bottom (upflow configuration).

Return Air Filters

Each installation must include a return air filter. This filtering may
be performed at the air handler or externally such as a return air
filter grille. Air handlers mounted in the downflow orientation,
including "B" series, require external filtering. A washable filter is
available as an accessory. To ensure optimum performance,
frequent filter cleaning is advised. Refer to the following chart for
the appropriate filter.
WAHMS WAHME
1824 N/A
3030 1830
1931
3636
3642 3137
3743 4260
4860

ELECTRIC HEAT

Refer to this manual in combination with the instructions
provided with the heat kit for the correct installation procedure.
The air handlers listed in this manual do not have factory-
installed electric heat. Electric heat is available as an accessory. If
installing this option, the only heat kits that can be used are the
HKR series.
NOTE: The EHK, ECB, EDB and EDK kits are not approved for
use with these air handlers.
The heating mode temperature rise is dependent upon the
system airflow, the supply voltage and the heat kit size (kW)
selected. Use the Temperature Rise tables to determine the
temperature rise ºF (ºC).
Temperature Rise Table ºF—230/1/60 Supply Voltage
Heat Kit Nominal kW—ºF
3 5 6
CFM
600 18 28 35
800 13 21 26
1,000 11 17 21
1,200 9 14 18
1,400 8 12 15
1,600 7 10 13
1,800 6 9 12
2,000 5 8 11
4
Quantity
Filter Number Required
FIL 18-32 1
FIL 36-42 1
FIL 48-61 1
8 10 15 20
41
31 42
25 34 50
21 28 42 56
18 24 36 48
15 21 31 42
14 19 28 37
12 17 25 34
Temperature Rise Table ºF—220/1/60 Supply Voltage
Heat Kit Nominal kW—ºF
3
CFM
600 17
800 13
1,000 10
1,200 8
1,400 7
1,600 6
1,800 6
2,000 5
Temperature Rise Table ºF—208/1/60 Supply Voltage
Heat Kit Nominal kW—ºF
3 5
CFM
600 16 25
800 12 19
1,000 10 15
1,200 8 13
1,400 7 11
1,600 6 9
1,800 5 8
2,000 5 8
NOTE: For installations not indicated in the Temperature Rise
tables, the following formula is to be used:
TR = (kW x 3412) x (Voltage Correction) x 1.08 / CFM
Where: TR =
Voltage Correction =
21
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
62
heat and allow the system to reach steady state conditions.
Insert 2 thermometers, one in the return air and one in the supply
53
air. The temperature rise is the supply air temperature minus the
room air temperature.
46
Use HKR specification sheets to determine the HKR available for
41
a given air handler.
37
Follow instructions listed in the Installation and Operating
Instructions shipped with the heat kit.
3 5 6 8
27 34 39
20 25 30 40
16 20 24 32
13 17 20 27
11 14 17 23
10 13 15 20
9 11 13 18
8 10 12 16
6 8 10
32 37
24 30 38
19 22 30
16 19 25
14 16 22
12 14 19
11 12 17
10 11 15
Temperature Rise
kW = Heater Kit Actual kW
3412 = Btu per kW
96 (230 Supply Volts)
= 92 (220 Supply Volts)
= 87 (208 Supply Volts)
1.08 = Constant
CFM = Measured Airflow

HKR Installation

10 15 20
48
40 53 59
34 46 51
30 40 44
27 36 39
24 32 35
15 20 21
46
38 51 56
33 43 48
28 38 42
25 34 37
23 30 34