Carrier 50MP62L-10R Heating System User Manual


 
Installation, Start-Up and Service
Instructions
CONTENTS
Page
GENERAL ................................. 2
SAFETY CONSIDERATIONS ................. 2
INSTALLATION ............................ 3-28
Jobsite Survey ............................. 3
Unit Placement ............................ 3
Roof Mount ................................ 3
Slab Mount ................................ 3
Field-Fabricated Ductwork .................. 3
Rigging .................................... 3
Condensate Drains ......................... 3
Condensate Coil Shipping Covers .......... 3
Install Outdoor Hoods ...................... 3
Make Electrical Connections ................ 14
POWER SUPPLY
Field Electrical Connections ................ 14
POWER WIRING
Control Wiring ............................. 17
SENSORS
HUMIDITY CONTROL AND HOT WATER
AND STEAM VALVES
SPACE TEMPERATURE SENSOR (T55)
SPACE TEMPERATURE SENSOR (T56)
(CV Applications Only)
SPACE TEMPERATURE AVERAGING
HEAT INTERLOCK RELAY (VAV Units Only
Not Necessary For DAV Applications)
OPTION AND ACCESSORY CONTROL WIRING
Carrier Comfort Network Interface .......... 23
Air Pressure Tubing ........................ 24
Gas Piping (48 Series Units Only) ............26
Installing Flue/Inlet Hoods
(48MP Units Only) .........................26
Fan Isolator Adjustment .................... 27
Check Compressor Mounting ............... 27
Install Accessories ......................... 27
PRE-START-UP ............................28-38
System Check ............................. 28
Compressor Oil ............................ 29
Evaporator-Fan Belts, Pulleys,
and Sheaves .............................. 29
Controls Configuration and Quick Test ...... 35
SUPPLY FAN STATUS SWITCH (FS)
CHECK FILTER SWITCH (CFS)
ENTHALPY CONTROL SET POINT
KEYPAD AND DISPLAY MODULE (HSIO)
CONFIGURATION
SET UNIT TYPE
ENTER JOB SET POINT VALUES
CONFIGURE UNIT CONTROLS AND
FUNCTIONS
QUICK TEST FUNCTION
Page
Gas Pressure Check ........................38
Check Supply Fan Rotation ................. 38
START-UP ................................38-42
Initial Check ............................... 38
General .....................................39
Operating Sequences ...................... 39
SUPPLY FAN
ECONOMIZER
COOLING (All Units)
OCCUPIED COOLING
UNOCCUPIED COOLING
OVERRIDES
ADAPTIVE OPTIMAL START
ADAPTIVE OPTIMAL STOP
(CV Applications Only)
GAS HEATING, OPERATION
(48MP Units Only)
Control Loop Checkout ..................... 41
IAQ Control Loop Adjustment ............... 42
Lead/Lag Circuits .......................... 42
Final Checks ............................... 42
CONTROL SYSTEM ........................42-45
General .................................... 42
Components ............................... 42
PROCESSOR MODULE NO. 1
PROCESSOR MODULE NO. 2
HIGH-VOLTAGE RELAY MODULES (DSIO)
KEYPAD AND DISPLAY MODULE (HSIO)
Default Set Points/Changing Set Points ..... 43
Motor Protection ........................... 43
Variable Frequency Drive (VFD) ............. 43
DISPLAY AND KEYPAD
SERVICE ..................................45-55
Service Access ............................ 45
UNIT CONTROL BOX
COMPRESSORS
LIQUID SERVICE VALVES, SOLENOID VALVES,
FILTER DRIERS, AND SIGHT GLASSES
EVAPORATOR-FAN MOTORS, PULLEYS, AND
BELTS
POWER EXHAUST MOTORS, PULLEYS, AND
BELTS
GAS HEAT SECTION
UNIT CONTROL BOX
ECONOMIZER DAMPER MOTORS
RETURN-AIR FILTERS
CONDENSER FANS AND FAN MOTORS
Cleaning .................................. 46
48MPD,MPE62L-10R
50MP62L-10R
Single Package Electric Cooling Units
and Gas Heating/Electric Cooling Units
With Product Integrated Controls
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 1
Tab 1a 1b
PC 111 Catalog No. 534-893 Printed in U.S.A. Form 48/50MP-1SI Pg 1 12-98 Replaces: 50MP-1SI