Parker 2-stage thermostat interface kit 安装说明书

NOTE:Read entire instruction manual before starting the installation.
INTRODUCTION
These instructions cover installation of a2-stage thermostat interface kit Part No.KGATT0101VSP on variable-speed condensing furnaces.
DESCRIPTION AND USUAGE
This kit is intended for use with any Parker2-stage thermostat and allows the thermostat to override the furnace’s internal thermostat algorithm. In addition,this kit may also be used in conjunction with other24-v2-stage thermostats which primarily operate in the low-fire mode at the start of the heating cycle.The following2-stage thermostats are compatible with the variable-speed condensing furnaces:Honeywell T874F1015and T8621C7008;White-Rodgers1F91-3.
SEQUENCE OF OPERATION
1.Thermostat call for W1or HEAT1only:The furnace will operate in low fire only with the exception of the first minute of high-fire on
each cycle.
2.Thermostat call for W2or HEAT2only:The furnace ignores the request for high heat until the thermostat call for W1or HEAT1.
3.Thermostat call for W1or HEAT1and W2or HEAT2simultaneously:The furnace will operate in high fire only,even if W2or HEAT2
is de-energized.
4.Thermostat call for W1or HEAT1followed by a thermostat call for W2or HEAT2:The furnace will operate in low fire until the thermostat
calls for W2or HEAT2.Then the furnace proceeds to operate in high fire and remains in high fire until the call for heat is satisfied(when W1or HEAT1is de-energized),even if W2or HEAT2is de-energized.Consult product engineering to determine thermostat compatibility if you intend to use a thermostat that is not listed above.
NOTE:This kit is not compatible with variable-speed outdoor units when used in conjunction with a Parker2-stage Home Zone®thermostat; when the thermostat is configured for these units,the thermostat relays do not function.Each2-stage thermostat interface kit comes completely assembled with a relay wired for easy installation.
WARNING:Turn OFF power at main disconnect switch before starting installation to avoid possibility of electrical shock.
INSTALLATION
The following steps should be performed by a qualified service person:
1.Turn OFF power at main disconnect.
2.Remove access doors.
3.Remove control box.
4.Connect3-pin Molex connector to furnace control board receptacle P
5.(See Fig.1.)
5.Secure green ground wire from cable shielding and black wire from relay to lower left control board mounting screw.(See Fig.1.)DO NOT
cut or remove wire tie,route wire as shown in Fig.1.
6.Put setup switch No.2on furnace control board to ON(up)position.See Fig.1for setup switch location.
7.Place3-in.edge guard on front left side of control box cover.(See Fig.1.)
8.Reinstall control box cover using only right side mounting screw.
9.Secure relay and left side of control box cover in place using left side control box cover mounting screw.(See Fig.1.)
NOTE:When the condensate drain pipe exits the left-hand side of the furnace,rotate the relay90°in either direction to avoid interference.
10.Connect thermostat wire for low-fire stage W1or HEAT1to W terminal on furnace control board.
11.Connect brown interface wire from relay using field-supplied wire nut to thermostat wire for high-fire stage W2or HEAT2.
Installation Instructions
KGATT0101VSP Accessory
Thermostat Kit
Form:AG-GATT-01Cancels:IIK398B-60-4/58SXB-12SI Printed in U.S.A.7-92Catalog No.92-33GA-TT1
12.Reinstall access door.
13.Turn ON electrical power and wait 30sec before setting room thermostat to ‘‘call for heat.’’
14.If applicable,set thermostat heat anticipation per the thermostat manufacturer’s recommendations.On thermostats that use a program
selectable cycle rate,set thermostat for 3to 4cycles per hour.
Fig.1—Two-Stage Thermostat Interface Kit
A89216
CONTROL BOX COVER
COVER SCREW
©1995CAC /BDP P.O.Box 70,Indianapolis,IN 4620615042—2—Book/Tab:1/6a 4/8a Catalog No.92-33GA-TT1。