COSMOGAS BMS User manual

U.S.A.
62403262 - R1
INSTRUCTION MANUAL
For installation, use and maintenance for the
5-41-5
M DELS: BMS & BTS
Direct Vent
Space / Water Heater
Combined Appliance
For Heating and Domestic Hot Water
These instructions MUST be read prior to installation and
left near the appliance when the installation is completed.
Te t complies with minimum size requirements.
120601

2
SAFETY INSTRUCTI NS
WARNING: If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or death.
 Do not store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
 WHAT T D IF Y U SMELL GAS
 Do not try to light any appliance.
 Do not touch any electrical switch;
do not use any phone in your building.
 Immediately call your gas supplier
from a neighbors phone. Follow the
gas suppliers instructions.
 If you cannot reach your gas
supplier, call the fire department.
 Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
F R Y UR SAFETY
Do not store or use gasoline or other flammable,
combustible, or corrosive vapors and liquids
in the vicinity of this or any other appliance.

3
These instructions must be read prior to installation. If the information in these instructions
is not followed e actly, a fire or e plosion may result, causing property damage, personal
injury, or death.
Hazards and Your Safety - Hot Water Can Scald!
Water temperature over 125°F can cause severe burns instantly, or death from scalds.
Children, disabled, and elderly are at highest risk of being scalded; see instruction manual
before setting temperature at water heater! Feel water before bathing or showering.
Temperature limiting valves are available, see manual.
If there is a smell of gas:
-Turn the gas cock off - Air the room - Do not try to light any appliances - Do not use any
phone in your building - Do not touch any electrical switch - E tinguish any flames - Call
immediately a licensed authorized technician or your local gas company - Follow the gas
suppliers instructions - If you cannot reach your gas supplier, call the fire department.
If there is a smell of combustion roducts:
-Turn the unit off - Air the room - Call a licensed authorized technician.
Installation, alterations
Licensed authorized personnel must carry out the installation, calibration or alteration of the
gas apparatus. Flue gas ducts must not be modified in any way. Any replaced part or
packaging parts should never be left within reach of children.
Ex losive roducts or easily inflammable roducts
Do not keep, use or store e plosive materials or easily inflammable materials such as Gasoline,
Adhesives, Solvents, Paint Thinner, Butane, Liquefied Propane, paper, etc., near the heater.
Maintenance
The user, according to the heaters operating instructions, has to keep the installation in
good condition and guarantee the reliable, safe operation of the heater. At least once a year
the user must call in a licensed authorized technician for routine maintenance, before using
it for central heating.
Servicing Manual
When the installation and commissioning of the system has been completed, the installer
should instruct the homeowner to save the installation manual near the heater so that service
technicians may refer to it in the future.
Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can
cause improper and dangerous operation. VERIFY PR PER PERATI N AFTER SERVICING.
Do not use this appliance if any part has been under water. Immediately call a qualified
service technician to inspect the appliance and to replace any part of the control system
and any gas control, which has been under water.
SAFETY INSTRUCTI NS

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GENERAL INF RMATI N .................................................................................................. 4
TABLE F C NTENTS ....................................................................................................... 4
TABLE F C NTENTS ....................................................................................................... 5
GENERAL LAY UT of the main components of model BMS ........................................... 6
GENERAL LAY UT of the main components of model BTS ............................................ 8
GENERAL LAY UT of the main components of model BTS ............................................ 9
A INSTALLATI N INSTRUCTI NS .................................................................................. 10
1 Operating and adjusting the output to the radiation system ........................................ 10
2 Location ..................................................................................................................... 10
3 Installation .................................................................................................................. 10
3.1 Installation Template ......................................................................................... 10
A INSTALLATI N INSTRUCTI NS .................................................................................. 11
Clearances for installation ...................................................................................... 11
3.2 Safety Relief Valve ........................................................................................... 12
3.3.1 Installation of two heaters .............................................................................. 12
3.3.2 Installation of three or more heaters ............................................................. 12
GENERAL INF RMATI N
This instruction manual refers to two types of heaters, the BMS and the BTS.
BMS - this appliance is a wall mounted, direct vent space/water heater
BTS - this appliance is a self standing floor model, direct vent space/water heater
Each type of heater can be of two different input power rating; a 10/20 or 15/29;
10/20 has an input power rating of 87,000 (31.6) Btu/hr (kW)
15/29 has an input power rating of 107,000 (26) Btu/hr (kW)
BMS 10/20
or
BMS 15/29
or
BTS 10/20
or
BTS 15/29
When referring to this instruction manual, be sure of which type of heater you are working
with. This can be verified by referring to the data plate marked Space water heater model
. This data plate is located on the bottom side of the BMS, or on the inside of the front door
(internal side) of the BTS.
Also verify the type of gas for which the heater is set. A label in the front of your heater states
NATURAL GAS, for heaters set to natural gas, or LP GAS for heaters set to LP gas.
TABLE F C NTENTS

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TABLE F C NTENTS
3.3.3 Radiant heating installation ........................................................................... 12
................................................................................................................................12
3.3.4 Used of glycol ................................................................................................ 12
................................................................................................................................13
3.4 Domestic Hot and Cold water ........................................................................... 13
3.5 Water Hardness ............................................................................................... 13
3.6 Gas Supply ....................................................................................................... 13
3.6 Gas Supply (cont.) ............................................................................................ 14
3.7 Electrical Supply Connection ............................................................................ 14
3.8 Room Thermostat Connection ......................................................................... 14
4 VENTING SYSTEMS ................................................................................................. 16
4.1 Concentric Flue (Coa ial) ................................................................................. 16
ATTENTION !!! .............................................................................................................. 17
4.2 Split Flue ........................................................................................................... 18
4.3 Chimney Venting .............................................................................................. 18
4.5 Venting Locations - Outside Walls (Direct Venting) ......................................... 18
4.6 Kit for air intake/flue discharge ......................................................................... 18
5 REGULATING THE DOMESTIC HOT WATER ........................................................... 31
6 BURNER.................................................................................................................... 31
6.1 Changing the Gas Type .................................................................................... 31
6.2 Adjusting Gas Flow and Pressure to the Burner .............................................. 31
7 WIRING DIAGRAMS ................................................................................................. 38
9.4 Summer-Winter Mode ...................................................................................... 42
9.5 Adjusting Central Heating ................................................................................. 42
9.6 Manual Reset High-Limit Thermostat ............................................................... 42
9.7 Resetting the Ignition Module ........................................................................... 42
9.8 Heating Circulator Pump .................................................................................. 42
9.9 Shut-Down Procedure ...................................................................................... 42
9.10 Maintenance ......................................................................................................... 42
9.11 Draining water from the heater .............................................................................. 42
10 - BTS model - INSTRUCTIONS FOR USE ............................................................... 43
10.1 Start-Up Instructions ....................................................................................... 43
10.2 Checks Prior to Ignition .................................................................................. 43
10.3 Ignition Procedure .......................................................................................... 43
10.4 Summer-Winter Mode .................................................................................... 44
10.5 Adjusting Central Heating............................................................................... 44
10.6 Manual Reset High-Limit Thermostat ............................................................. 44
10.7 Resetting the Ignition Module ......................................................................... 44
10.8 Heating Circulator Pump ................................................................................ 44
10.9 Shut-Down Procedure .................................................................................... 44
10.10 Maintenance ....................................................................................................... 44
10.11 Draining water from the heater ............................................................................ 44
E IMP RTANT INF RMATI N F R THE CUST MER ................................................... 48
F SPARE PARTS ............................................................................................................... 49
G TECHNICAL FEATURES .............................................................................................. 50

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GENERAL LAY UT of the main components of model BMS
Figure 1 - BMS Front view
Coaxial discharge Split discharge
A = Flue discharge
B = Air intake

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GENERAL LAY UT of the main components of model BMS
Figure 2 - BMS Side and top views
1 Central heating supply
2 Central heating return
3 Gas inlet
4 Domestic hot water outlet
5 Cold water inlet
6 Flue gas discharge fan
7 Automatic air vent
8 Thermostat bulb pocket
9 Gas valve service switch
10 Instrument panel
11 Temperature-pressure gauge
12 Failure lamp indicator
13 Ignition and detection electrodes
14 Burner
15 Gas manifold
16 Exchanger shell clamps
17 Gas valve
18 High limit thermostat
19 Power and circulator pump switches
20 Domestic hot water priority thermostat
21 Central heating regulation knob
22 Heater temperature control
23 Electrical control board
24 Ignition module
25 Electrical plastic cover
26 Electrical junction box
27 Expansion tank
28 Pressure switch
29 Domestic water heat exchanger
30 Heat exchanger
31 Turbulator
32 Support bracket
33 Central heating regulation valve
34 Circulator pump
35 Transformer

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GENERAL LAY UT of the main components of model BTS
Figure 3 - BTS Front view

9
GENERAL LAY UT of the main components of model BTS
1 Central heating supply
2 Central heating return
3 Gas inlet
4 Domestic hot water outlet
5 Cold water inlet
6 Flue gas discharge fan
7 Automatic air vent
8 Thermostat bulb pocket
9- -
10 Instrument panel
11 Temperature-pressure gauge
12 Failure lamp indicator
13 Ignition and detection electrodes
14 Burner
15 Gas manifold
16 - -
17 Gas valve
18 High limit thermostat
19 Power and circulator pump switches
20 Domestic hot water priority thermostat
21 Central heating regulation knob
22 Heater temperature control
23 Electrical control board
24 Ignition module
25 - -
26 Electrical junction box
27 Expansion tank
28 Pressure switch
29 - -
30 - -
31 - -
32 - -
33 Central heating regulation valve
34 Circulator pump
35 Transformer
36 Low water cut-off
A Flue discharge
B Air intake
Figure 4 - BTS side view

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A INSTALLATI N INSTRUCTI NS
1 perating and adjusting the
output to the radiation system
The COSMOGAS heater can be installed in any
domestic or light commercial building where
the maximum BTU/H required is not greater
than 84,000 BTU/H.
The unit has a internal mi ing valve (heating side
only) that can be adjusted to regulate the supply
water temperature delivered to the heating system.
The heating system will not receive any water
unless the water temperature inside of the heater
is at a minimum of 140°F. The heater built-in
domestic hot water priority thermostat will cease
the power to the circulator until the temperature is
greater than 140°F.
2 Location
This space/water heater unit is not intended for
outdoor installation. Choose a location centralized
to the piping system along with consideration to
the vent pipe length. Additionally, you will need to
place the space/water heater so that the controls,
drain, inlet/outlet, and gas valve are easily
accessed. Also, care must be e ercised when
choosing the location of this appliance, where
leakage from the safety relief valves, leakage from
related piping, or connections, will not result in
damage to the surrounding areas, or to the lower
floor of the building.
No valve is to be placed between the safety relief
valves and the heater. The discharge from the
temperature and pressure relief valve must be
conducted to a suitable place for disposal. No
reducing coupling or other restriction shall be
installed in the discharge line. The discharge line
should allow complete drainage of both valve and
line.
3 Installation
The installation must conform to local codes and
ordinances or, in the absence of local codes, the
National Fuel Gas Code ANSI Z 223.1/NFPA 54 -
1984. When installed the appliance must be
electrically grounded in accordance with the
National Electrical Code, ANSI/NFPA No.70 -
1987.
For Canada, the installation should conform to CGA
B149.1 INSTALLATI N C DES and/or local
installation codes.
The gas supply piping system should be tested
before the heater is connected.
The heater, (complete with all its parts: e ternal
jacket, intake and discharge flue pipes, etc.), must
be installed leaving a distance of at least 10 cm,
(4), from sidewalls and ceiling.
Installation of the BTS combi directly on
combustible flooring such as carpeting shall be
installed on a metal or wood panel e tending behind
the full width and depth of the appliance by at least
3, (76.2 mm), in any direction or, if the appliance
is installed in an alcove or closet, the entire floor
shall be covered by the panel.
3.1 Installation Template
ONLY model BMS is provided with an installation
Figure 5 - Installation template, nly
for model BMS
Figure 5