Johnson Controls Heat Pump hc8 User Manual

REPAIR PART INSTALLATION MANUAL  
HEAT PUMP COMMUNICATING CONTROL REPAIR KIT (S1-33102957000)  
MODELS YZB, YZE, YZH, HL5, HC5, HL8, HC8  
FIGURE 1: Demand Defrost Control Module  
3. Specify appropriate defrost curve using the jumper on the  
control. See Table 1.  
GENERAL INFORMATION  
The YorkGuard VI Demand Defrost control as a replacement  
part for prior versions of the YorkGuard control.  
TABLE 1: Defrost Initiate Curves  
Defrost Curve  
Selection  
1
2
3
4
Jumper Position  
Following the detailed instructions for modifications of both  
the indoor and outdoor units is critical.  
YZB/HC3B/HL3B 2 & 2.5 Ton 4 & 5 Ton 3 & 3.5 Ton 1.5 Ton  
YZE/HC5B/HL5B  
YZE03811  
2 Ton  
N/A  
4 & 5 Ton  
N/A  
3 Ton  
3 Ton  
N/A  
N/A  
NOTE: For direct replacement of YorkGuard VI, replace the  
control only.  
Service replacement kit consists of:  
YorkGuard “VI” Defrost Control.  
4. Verify that the Y2 LOCK jumper is set. This jumper is not  
applicable to a single stage compressor system.  
5. Specify if the Heat Pump is installed with a fossil fuel fur-  
nace using the FFUEL jumper. The jumper should be ON  
for a fossil fuel furnace installation and OFF for an air han-  
dler installation.  
CONTROL CONFIGURATION FOR  
ALL APPLICATIONS  
Most jumper settings should be set to match jumpers on board  
being removed.  
6. Specify Switch Point jumper using the jumper on the con-  
trol.  
Remove control from packaging and configure the control as  
follows:  
7. Verify that the HOT HEAT PUMP is set appropriately.  
1. Specify the desired Low Temperature Cut Out (LTCO)  
using the jumper on the control.  
8. Specify compressor delay using jumper on the control.  
“ON” will shut-off compressor when entering and leaving  
defrost.  
2. Specify the desired Balance Point (BP) using the jumper on  
the control.  
Johnson Controls Unitary Products  
035-22286-001-A-0909  
 

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