Laars Rheos+ RHHV - Install and Operating Manual User Manual

Rheos / Rheos+ Service Clearances 09-12 May 21, 2009 To: Manufacturer’s Representatives and Distributors, Contract Service Centers, Sales Team, In

Rheos+ Boiler and Water HeaterPage 9Term DescriptionPipe Single-wall galvanized steel pipe, 24 gauge minimum (sized per section 1.9)Joint Permanent

LAARS Heating SystemsPage 10*When vent terminal is less than 10 feet (3m) horizontally from a fo

Rheos+ Boiler and Water HeaterPage 111. The gure in this addendum shows the requirements for mechanical vent terminal clearances for the U.S. and Ca

LAARS Heating SystemsPage 12(c) MANUFACTURER REQUIREMENTS – GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer of Product Approved side w

Rheos+ Boiler and Water HeaterPage 13Model and Distance from Gas Meter or Last Stage RegulatorGas Type 0-50 feet 0-15m 50-100 feet 15-31m 100-200

LAARS Heating SystemsPage 147. All threaded joints should be coated with piping compound resistant to action of liqueed petroleum gas.8. The appl

Rheos+ Boiler and Water HeaterPage 15medium is piped in parallel with the boiler with appropriate valves to prevent the chilled medium from entering t

LAARS Heating SystemsPage 16 Water HeaterIn a water heating application (an open system), new water is constantly bei

Rheos+ Boiler and Water HeaterPage 17If the water at the inlet of the copper heat exchanger is less than 140°F (60°C), water from the outlet of the co

LAARS Heating SystemsPage 18NOTE: These systems are not allowed in the Commonwealth of Massac

Installation and Operation Instructions Document 1185B H2310800BInstallat

Rheos+ Boiler and Water HeaterPage 19Rheos+ heaters are not designed to be pl

LAARS Heating SystemsPage 20

Rheos+ Boiler and Water HeaterPage 21

LAARS Heating SystemsPage 22

Rheos+ Boiler and Water HeaterPage 23

LAARS Heating SystemsPage 24Section 5 WARNINGThe appliance must be electrically grounded in accordance with the requirements o

Rheos+ Boiler and Water HeaterPage 25temperature is less than 140°F (60°C), internal mixing will keep the outlet temperature at 160-165°F (71-74°C), a

LAARS Heating SystemsPage 26is drawing down, the heater will react to sustain a minimum tank temperature. Boilers generally have higher differential

Rheos+ Boiler and Water HeaterPage 27The proportional control used on the Rheos+ has internal circuitry that helps to minimi

LAARS Heating SystemsPage 28another 20-25°F (11-14°C) (when at high re), and it leaves the boiler at 160-165°F (71-74°C). This hot water is then s

LAARS Heating SystemsPage 2

Rheos+ Boiler and Water HeaterPage 29The second menu “Add” has to do with the N2 address. Pressing enter when “Add” is displayed will display “255”,

LAARS Heating SystemsPage 30

Rheos+ Boiler and Water HeaterPage 31

LAARS Heating SystemsPage 32

Rheos+ Boiler and Water HeaterPage 33

LAARS Heating SystemsPage 34Figure 21 - Wiring Schematic, Model 1200, Figure 22 - Wiring Schematic, Models 1600, 2000 and

Rheos+ Boiler and Water HeaterPage 35Figure 24 - Wiring Schematic, Models 1600, 2000 

LAARS Heating SystemsPage 36Section 6 1. Ensure the system is fully connected. Close all bleedin

Rheos+ Boiler and Water HeaterPage 375. Remove the two plugs from the + and – ports of the

LAARS Heating SystemsPage 38 (c) Open gas shutoff valve. Restart the appliance. The ignition sequence will start again and the burner will start.

Rheos+ Boiler and Water HeaterPage 3Section 1 General Information1.1 Introduction ...

Rheos+ Boiler and Water HeaterPage 39Figure 27 - Gas Trains

LAARS Heating SystemsPage 40Figure 28 - Gas TrainsSolenoid SafetyGas ValveModulating GasValve ActuatorModulating GasValve BodiesManualGas ValveOn/Of

Rheos+ Boiler and Water HeaterPage 41shutoff valve. Remove the front and right-side panels from the unit. Disconnect the union between the valve body

LAARS Heating SystemsPage 427.2.10 Mixing ActuatorThe mixing actuator connects to both mixing valves and takes its signal from the mixing control to

Rheos+ Boiler and Water HeaterPage 438. Clean the heat exchanger: A light accumulation of soot or corrosion on the outside of the heat exchanger can

LAARS Heating SystemsPage 446. When the call for heat is complete, or the unit reaches its setpoint temperature, the gas valve will close, and the

Rheos+ Boiler and Water HeaterPage 45 Short cycling will generally occur only in combination space heating and water h

LAARS Heating SystemsPage 46 See Figure 30 1200 1600 2000 24002 Base assembly 24A1200 24A1200 24A1200 2

Rheos+ Boiler and Water HeaterPage 4750 Tubing/Fittings (gas train repair kit) R2020700 R2020700 R2020700 R202070051 Air lter box assembly (wit

LAARS Heating SystemsPage 48See Figures 34 and 35 1200 1600 2000 2400110 Header cover 12A4200 16A4200 20A4200 24

LAARS Heating SystemsPage 4Table 1 Clearances ...6Table 2 Vent / Air Pipe Sizes ...

Rheos+ Boiler and Water HeaterPage 49

LAARS Heating SystemsPage 50

Rheos+ Boiler and Water HeaterPage 513738 OR 4241(Primary)41(Secondary)42 OR 434446 OR 4749485067633738 OR4039 OR 4041

LAARS Heating SystemsPage 52

Rheos+ Boiler and Water HeaterPage 53

LAARS Heating SystemsPage 54

Rheos+ Boiler and Water HeaterPage 55

Page 56H2310800B®800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.

Rheos+ Boiler and Water HeaterPage 5Section 1GENERAL INFORMATIONUSING THIS MANUAL – Because the Rheos+ Boilers and Rheos+ Water Heaters are identical

LAARS Heating SystemsPage 6(12) Firing Mode F = Modulating(13) Revision 2 = Second version(14) Heat Exchanger E = Glass-lined steel with copper t

Rheos+ Boiler and Water HeaterPage 7Figure 1 - Dimensional DrawingModel Intake Exhaust Intake Exhaust Size Size Maximum Run Maximum Run 1200

LAARS Heating SystemsPage 8The combustion air can be taken through the wall, or through the roof. When taken from the wa