LAARS SUMMIT SMW-250 - Install and Operating Manual - Manual (Page 2)

Page 2 LAARS Heating Systems
Table of Contents
SECTION 1.
General Information
1.1 Introduction ................................................... 3
1.2 Warranty ....................................................... 4
1.3 Materials Installer Must Provide .................... 4
1.4 Unpacking..................................................... 4
1.5 Locating the SUMMIT Appliance ................... 4
1.6 Locating Appliance for Correct
Vent Distance from Outside Wall or
Roof Termination .......................................... 5
1.7 Locating Appliance for Proper Vent Height.... 5
1.8 Locating Appliance with Respect
to Ventilation ................................................. 5
1.9 Locating SUMMIT Water Heater with
Respect to StorageTank(s) ........................... 5
1.10 Locating SUMMIT Boiler with Respect to
Supply/Return Header .................................. 5
SECTION 2.
Ventilation
2.1 Locating Vent Openings on Outside Wall ...... 6
2.1.1 Exhaust Terminal Location ............................ 6
2.1.2 Intake Terminal Location ............................... 6
2.2 Installing Vent Piping / Terminals .................. 6
SECTION 3.
Gas Connections
3.1 Gas Supply and Piping ................................. 7
SECTION 4A.
Water Connections
SMB-200/250 Boiler
4A.1 Heating System Piping:
Hot Supply Connections ............................... 8
4A.2 Return Connections .................................... 10
4A.3 Cold Water Makeup .................................... 10
SECTION 4B.
Water Connections
SMW-200/250 Water Heater
4B.1 Water System Piping, Fittings
and Accessories ......................................... 10
4B.2 Combined Water (potable) Heating and
Space Heating (SMW-200/250 Only) .......... 13
SECTION 4C.
Condensate Drain Connection
................................................................... 13
SECTION 5.
Electrical Connections
5.1 Main Power ................................................. 14
5.2 Temperature Control – SMB-200/250 ......... 15
5.3 Temperature Control – SMW-200/250 ........ 15
5.3.1 Water Heater Temperature Control ............. 15
5.3.2 Tank Temperature Control .......................... 15
5.4 Wiring Diagram ........................................... 15
SECTION 6.
Operating Instructions
Warning Label ............................................ 18
6.1 Anti-Freeze ................................................. 19
6.1.1 Summit Boiler Low Temperature Feature .... 19
6.1.2 Anti-Freeze Boiler Additives ........................ 19
6.2 Anti-Freeze SMW-200/250 Water Heater ... 19
6.3 Filling the System ....................................... 19
6.4 Operating the Burner and Set Up ................ 20
6.5 Mode and On/Off Buttons Operation........... 21
6.6 Common Vent Test ..................................... 21
SECTION 7.
Maintenance
7.1 System Maintenance .................................. 22
7.2 Appliance Maintenance and
Component Description .............................. 23
7.2.1 Appliance Pump ......................................... 23
7.2.2 Gas Valve ................................................... 23
7.2.2.1 Offset and Throttle Adjustment ................... 23
7.2.3
Safety Limit Switch ..................................... 24
7.2.4 Appliance Control, Printed Circuit
Board (PCB ................................................ 24
7.2.5 Ignitor / Flame Sensor Assembly ................ 24
7.2.6 Transformer ................................................ 24
7.2.7 Blower ........................................................ 24
7.2.8 Mixing Valve ................................................ 24
7.2.9 Cleaning the Primary Heat Exchanger Coil . 25
7.2.10 Burner ......................................................... 25
7.2.11 Vent Terminals ............................................ 25
7.2.12 Condensate Collection System –
Inspection and Cleaning ............................. 25
7.2.13 Routine Deliming Procedure –
SMW-200/250............................................. 25
SECTION 8.
Trouble Shooting
8.1 Sequence of Operation ............................... 26
8.2 Trouble Shooting Fault Codes .................... 26
8.3 Fault Code Identification ............................. 26
8.4 Fault Correction .......................................... 26
8.5 Resolving Lockouts (LO) ............................ 27
8.6 Delayed Ignition – Possible Causes ............ 27
8.6.1 High Lock Up Pressure ............................... 27
8.6.2 Gas Valve Regulation ................................. 32
8.6.3 Defective Burner ......................................... 32
8.7 Short Cycling (SMB-200/250 ...................... 32
8.8 Short Cycling (SMW-200/250 ..................... 32
8.9 High Gas Consumption ............................... 32
Power Up Fault Tree ................................... 28
System Temperatures Fault Tree ................ 29
Water/Space Heating Fault Tree ................. 30
Ignition Fault Tree ....................................... 31
SECTION 9.
Replacement Parts
9.1 Parts List .................................................... 32