Venstar ColorTouch - Page 7

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C. If you have a multi stage HVAC system comprised of a fossil fuel
heater with air conditioning the Venstar ColorTouch will require
the5wiresmentionedabove(R,C,W,Y,andG)plusanadditional
wireforeachadditionalstageofHeatingorCooling.Youmay
reduce the 5 wire requirement to 4 if you give up independent fan
control,orusetheoptionalaccessory;Add-A-Wire.
D. Ifyouhaveaheat pump without aux heat the Venstar ColorTouch
willrequire5wires:R(24Vac),C(24Vac),W1/O/B(reversingvalve),
Y(1ststagecompressor),andG(fan).Ifthereareonly4wires
presentthatareconnectedtotheexistingthermostat,thereare
atleast3optionsavailabletoconnecttheVenstarColorTouch
thermostat, they are:
1. Usethe4wiresasinstructedbelowandnotethatthefanwill
onlyoperatewithaHeatingorCoolingdemand.
2. PullnewthermostatwirefromtheHVACequipmenttothe
thermostat so that there are at least 5 wires available.
3. PurchaseandinstallaVenstarAdd-A-Wireaccessory(ACC-0410).
E. Ifyouhaveaheat pump with aux heat the Venstar ColorTouch will
require6wires:R(24Vac),C(24Vac),W1/O/B(reversingvalve),Y(1st
stagecompressor),W2(AuxHeat)andG(fan).Ifthereareonly5
wirespresentthatareconnectedtotheexistingthermostat,there
areatleast3optionsavailabletoconnecttheVenstarColorTouch
thermostat, they are:
1. Usethe5wiresasinstructedbelowandnotethatthefanwill
onlyoperatewithaHeatingorCoolingdemand.
2. PullnewthermostatwirefromtheHVACequipmenttothe
thermostat so that there are at least 6 wires available.
3. PurchaseandinstallaVenstarAdd-A-Wireaccessory(ACC-0410).