2
The drawings in this document are for illustrative purposes only and is not part of any offer for sale or contract.
CONTENTS
1 - INTRODUCTION ....................................................................................................................................................................... 4
1.1 - Installation safety considerations ............................................................................................................................................... 4
1.2 - Equipment and components under pressure .............................................................................................................................. 4
1.3 - Maintenance safety considerations ............................................................................................................................................ 5
1.4 - Repair safety considerations ...................................................................................................................................................... 5
2 - PRELIMINARY CHECKS ........................................................................................................................................................ 7
2.1 - Check equipment received ......................................................................................................................................................... 7
2.2 - Moving and siting the unit ......................................................................................................................................................... 7
3 - DIMENSIONS/CLEARANCES ................................................................................................................................................. 9
4 - PHYSICAL DATA .................................................................................................................................................................... 10
5 - ELECTRICAL DATA .............................................................................................................................................................. 10
6 - APPLICATION DATA ............................................................................................................................................................. 12
6.1 - Unit operating range ................................................................................................................................................................ 12
6.2 - Evaporator water flow rates ..................................................................................................................................................... 12
6.3 - Minimum water flow rate ........................................................................................................................................................ 12
6.4 - Maximum evaporator water flow rate ...................................................................................................................................... 12
6.5 - Water loop volume ................................................................................................................................................................... 12
6.6 - 30RY unit operating range at full and part load ...................................................................................................................... 12
6.7 - Pressure drop in the plate heat exchangers .............................................................................................................................. 13
7 - ELECTRICAL CONNECTION .............................................................................................................................................. 14
7.1 - Power supply ............................................................................................................................................................................ 15
7.2 - Voltage phase imbalance (%) ................................................................................................................................................... 15
8 - RECOMMENDED WIRE SECTIONS ................................................................................................................................... 15
8.1 - Field control wiring .................................................................................................................................................................. 15
9 - WATER CONNECTIONS ....................................................................................................................................................... 16
9.1 - Operating precautions and recommendations .......................................................................................................................... 16
9.2 - Hydronic connections .............................................................................................................................................................. 17
9.3 - Frost protection ........................................................................................................................................................................ 17
9.4 - Installation of the accessory condensate recovery pan ............................................................................................................ 17
10 - NOMINAL SYSTEM WATER FLOW CONTROL ........................................................................................................... 19
10.1 - Water flow control procedure ................................................................................................................................................ 19
10.2 - Pump curve and water flow control as a function of the system pressure drops ................................................................... 20
10.3 - Pump pressure/flow rate curves ............................................................................................................................................. 20
10.4 - Available static system pressure ............................................................................................................................................ 21
10.5 - Duct connection ..................................................................................................................................................................... 21
11 - START-UP ............................................................................................................................................................................... 23
11.1 - Preliminary checks ................................................................................................................................................................. 23
11.2 - Actual start-up ........................................................................................................................................................................ 23
11.3 - Operation of two units in master/slave mode ......................................................................................................................... 23
