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IM 447-11
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Product Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Receiving and Storage. . . . . . . . . . . . . . . . . . . . . . . . . 6
Pre-Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
General: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unit Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installing the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unit Piping Connection . . . . . . . . . . . . . . . . . . . . . . . . 8
Shutoff/Balancing Valve . . . . . . . . . . . . . . . . . . . . . . . 8
Suggested Hose Kit Installation . . . . . . . . . . . . . . . . . 8
Adding Motorized & Valve Assemblies . . . . . . . . . . . . 8
Piping. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cleaning and Flushing System . . . . . . . . . . . . . . . . . 11
Standard Electrical Connection . . . . . . . . . . . . . . . . 11
Cord & Plug Electrical Connection (Field Installed) . 11
Operating Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Operating Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Unit Electrical Data Table . . . . . . . . . . . . . . . . . . . . . 14
Units with Boilerless System Electric Heat . . . . . . . . 14
Unit Operation – General . . . . . . . . . . . . . . . . . . . . . . 15
Mark IV/AC-Control Units . . . . . . . . . . . . . . . . . . . . . 15
Motorized Valve & Relay for Unit Sizes 009 to 019. . 16
Control Options on Mark IV/AC Units . . . . . . . . . . . . 17
Thermostat Connection Diagrams . . . . . . . . . . . . . . 18
Programmable Electronic Thermostat Two-Stage
Heat/Two-Stage Cool, 7-Day Programmable . . . . . . 18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Non-Programmable, Auto or Manual Changeover
Two Stage Heat/Two Stage Cool, Night Setback
Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Optional Remote Sensor . . . . . . . . . . . . . . . . . . . . . . 19
(Used with Thermostats 668375301 & 668375401) . 19
Optional Remote Sensor Installation. . . . . . . . . . . . . 19
Multiple Unit Control Panel for Mark IV . . . . . . . . . . 20
Field Installed Outside Air Damper (Accessory) . . . 21
Manual Outside Air Damper . . . . . . . . . . . . . . . . . . . 21
Motorized Outside Air Damper . . . . . . . . . . . . . . . . . 21
Motorized Outside Air Damper Wiring. . . . . . . . . . . . 22
Unit Operation Check List . . . . . . . . . . . . . . . . . . . . . 23
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Neither fan nor compressor runs: . . . . . . . . . . . . . . . 23
Fan operates but compressor does not: . . . . . . . . . . 23
Compressor attempts to start but doesn’t: . . . . . . . . 24
Compressor runs in short cycle: . . . . . . . . . . . . . . . . 24
Insufficient cooling or heating:. . . . . . . . . . . . . . . . . . 24
Insufficient water flow through condenser: . . . . . . . . 24
Water drips from conditioner: . . . . . . . . . . . . . . . . . . 24
Noisy unit operation: . . . . . . . . . . . . . . . . . . . . . . . . . 24
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Typical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . 26
Typical Mark IV/AC . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Console WSHP Size 009–019, All Voltages, 60Hz /
Single Phase, Mark IV Board with Manual Changeover
(MCO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Console WSHP Size 009–019, All Voltages, 60Hz /
Single Phase, Mark IV Board with Auto Changeover
(ACO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Console WSHP Size 009–019, All Voltages, 60Hz /
Single Phase, Mark IV Board with Auto Changeover
(ACO) Remote Thermostat . . . . . . . . . . . . . . . . . . . . 29
Console WSHP Size 009–019, All Voltages, 60Hz /
Single Phase, Mark IV Board with Manual Changeover
(MCO) Boilerless Constant Fan . . . . . . . . . . . . . . . . 30
Console WSHP Size 009–019, All Voltages, 60Hz /
Single Phase, Mark IV Board with Auto Changeover
(ACO) Boilerless with Remote Thermostat . . . . . . . . 31
Water Source Heat Pump Equipment Check, Test
and Start Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Unit Check / Equipment Data . . . . . . . . . . . . . . . . . . 33
Commercial Check, Test and Start Worksheet . . . . . 34
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