Appendix 1 - Special Considerations For Installing The Model 8800 With The 8870 Series Communicating Thermostat - Aprilaire 8800 System Installation Manual

APPENDIX 1 – SPECIAL CONSIDERATIONS FOR INSTALLING THE MODEL 8800 WITH
THE 8870 COMMUNICATING THERMOSTAT
WHEN REPLACING AN 8870 THERMOSTAT WITH THE MODEL 8800 THERMOSTAT THESE ADDITIONAL STEPS ARE REQUIRED
IN ORDER FOR PROPER OPERATION.
1. The 8800 Thermostat cannot be powered from an 8818 Distribution Panel. The 8800 Thermostat must be powered from the
HVAC 24VAC power.
2. The Model 8800 thermostat must be set to non-programmable mode to be used in a 8870/8818 system.
3. Replace any 8061 TT Support Modules connected to the thermostat with 8081 TT Support Modules, but in cases where a
single flush mount and/or outdoor sensor is used they can be directly connected to the new 8800 Thermostat and the Support
Module can be eliminated.
4. Replace any 8062 TrH Support Modules connected to the thermostat with 8082 TrH Support Modules.
FIGURE 16
MODEL 8818 DISTRIBUTION PANEL
A+ A- B+ B-
A
ON OFF
B
ON OFF
PWR
A
ON OFF
B
ON OFF
PWR
A
ON OFF
B
ON OFF
PWR
A
ON OFF
B
ON OFF
PWR
MAIN
PWR
24VAC
C R
ON OFF
16
A
REF
B
A
OFF ON
B
OFF ON
PWR
A
OFF ON
B
OFF ON
PWR
ORG
A
ORG/WHT
OFF ON
BLU
B
BLU/WHT
OFF ON
PWR
DO NOT CONNECT
TO 8800
ORG
A
ORG/WHT
OFF ON
BLU
B
BLU/WHT
OFF ON
GRN
PWR
GRN/WHT
WARNING
CAT-5
24VAC
B+ A+ B- A- C B O Y Y2 G
MODEL 8800 THERMOSTAT
GRN
GRN/WHT
CAT-5
BRN
BRN/WHT
MODEL 8061 OR 8062 SUPPORT MODULE
C
GRN/WHT
R
GRN
RSR
GRN
RSC
GRN/WHT
RSB
BRN
RSA
BRN/WHT
REF
CAT-5
B-
BLU/WHT
B+
BLU
A-
ORG/WHT
A+
ORG
R.V.-Heat (B) R.V.-Heat (B)
MODEL 8870 THERMOSTAT
RC
C
RSB
RSA
T1
T2
T3
T4
MODEL 8081 OR 8082 SUPPORT MODULE
RC R W2 W L S2 S1 T1 T2 RSA RSB
RSR
RSC
RSB
RSA
T1
T2
T3
T4
RC
RH
R.V.-Cool (O) R.V.-Cool (O)
G
HUM W1
DEH Y1
W2
Y2