Heating Sequence; Figure 19 Adjusting Cooling Differential Values; Figure 20 Adjusting Heating Differential Values; Figure 21 Wall-Mount Unit Heating Staging - Bard MULTI-TEC W18AAPA Service Instructions Manual

To adjust these parameters:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Cooling Setup
(A2); press ENTER key.
5. Press ENTER key to scroll to Stage 1 Diff On,
Stage 1 Diff Off, Stage 2 Diff On, Stage 2 Diff Off,
Stage 3 Diff On or Stage 3 Diff Off (see Figure
19).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
FIGURE 19
Adjusting Cooling Differential Values
Heating Sequence (see Figure 21)
If the return air temperature is below 58°F (Setpoint
+ Stage 1 Diff On), the unit will enable electric heat
stage 1. If the return air temperature is below 57°F
(Setpoint + Stage 2 Diff On), the unit will enable
Stage 1
Stage 2
Stage 3
55
FIGURE 21
MULTI-TEC Wall-Mount Unit Heating Staging
Stage 1 Diff On
Stage 2 Diff On
Stage 3 Diff On
Stage 3 Diff Off
56 57 58
electric heat stage 2. If the control value is below
56°F (Setpoint + Stage 3 Diff On), the unit will enable
electric heat stage 3.
To adjust these parameters:
1. Press MENU key to go to the Main Menu screen.
2. Press UP or DOWN keys and ENTER key to enter
USER password 2000.
3. Press UP or DOWN keys to scroll to Sys Config;
press ENTER key.
4. Press UP or DOWN keys to scroll to Heating Setup
(A3); press ENTER key.
5. Press ENTER key to scroll to Stage 1 Diff On,
Stage 1 Diff Off, Stage 2 Diff On, Stage 2 Diff Off,
Stage 3 Diff On or Stage 3 Diff Off (see Figure 20).
6. Press UP or DOWN keys to adjust value.
7. Press ENTER key to save.
Adjusting Heating Differential Values
Stage 1 Diff Off
Stage 2 Diff Off
Setpoint
59 60 61
On Band Off
FIGURE 20
62 63 64
Manual 2100-665G
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