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119169-01E

13

CHECKING GAS CONNECTIONS

 WARNING: Test all gas piping 

and connections, internal and 
external to unit, for leaks after 
installing or servicing. Correct 
all leaks at once.

 WARNING: Never use an 

open flame to check for a leak. 
Apply a noncorrosive leak detec-
tion  fluid to all joints. Bubbles 
forming show a leak. Correct all 
leaks at once.

Installation must include equipment shutoff 
valve, union and plugged 1/8" NPT tap. Locate 
NPT tap within reach for test gauge hook up. 
NPT tap must be upstream from heater (see 
Figure 15, page 12).

IMPORTANT:

 Install an equipment shutoff 

valve in an accessible location. The equip-
ment shutoff valve is for turning on or shutting 
off the gas to the appliance.
Apply pipe joint sealant lightly to male NPT 
threads. This will prevent excess sealant from 
going into pipe. Excess sealant in pipe could 
result in clogged heater valves.

 WARNING: Use pipe joint 

sealant that is resistant to liquid 
petroleum (LP) gas. 

Install sediment trap in supply line as shown 
in Figure 15, page 12. Locate sediment trap 
where it is within reach for cleaning. Locate 
sediment trap where trapped matter is not 
likely to freeze. A sediment trap traps mois-
ture and contaminants. This keeps them from 
going into heater controls. If sediment trap is 
not installed or is installed wrong, heater may 
not run properly.

IMPORTANT:

 Hold the pressure regulator 

with wrench when connecting it to gas pip-
ing and/or fittings. Do not over tighten pipe 
connection to regulator. The regulator body 
could be damaged.

INSTALLATION

Continued

 CAUTION: For propane/LP 

gas, make sure external regula-
tor has been installed between 
propane/LP supply and heater. 
See guidelines under Connect-
ing to Gas Supply
, page 12.

PRESSURE TESTING GAS SUPPLY 
PIPING SYSTEM
Test Pressures In Excess Of 1/2 PSIG 
(3.5 kPa)

1.  Disconnect appliance with its appliance 

main gas valve (control valve) and equip-
ment shutoff valve from gas supply piping 
system. Pressures in excess of 1/2 psig 
will damage heater regulator.

2.  Cap off open end of gas pipe where equip-

ment shutoff valve was connected.

3.  Pressurize supply piping system by either 

opening propane/LP supply tank valve 
for propane/LP gas or opening main gas 
valve located on or near gas meter for 
natural gas or using compressed air.

4.  Check all joints of gas supply piping system. 

Apply a noncorrosive leak detection fluid to 
all joints. Bubbles forming show a leak.

5.  Correct all leaks at once.
6.  Reconnect heater and equipment shutoff 

valve to gas supply. Check reconnected 
fittings for leaks.

Test Pressures Equal To or Less Than 
1/2 PSIG (3.5 kPa)

1.  Close equipment shutoff valve (see Fig-

ure 16).

2.  Pressurize supply piping system by either 

opening propane/LP supply tank valve 
for propane/LP gas or opening main gas 
valve located on or near gas meter for 
natural gas or using compressed air.

3.  Check all joints from gas meter for natural 

gas (see Figure 17, page 14) or propane/LP 
supply tank for propane/LP gas, to equip-
ment shutoff valve (see Figure 18, page 14). 
Apply a noncorrosive leak detection fluid to 
all joints. Bubbles forming show a leak.

4.  Correct all leaks at once.

Figure 16 - Equipment Shutoff Valve

Open

Closed

Equipment 
Shutoff Valve

Summary of Contents for NY108

Page 1: ...or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any ph...

Page 2: ...tured mobile home where not prohib ited by local codes Aftermarket Completion of sale not for purpose of resale from the manufacturer WARNING This product contains and or generates chemicals known to...

Page 3: ...ater Keep children and adults away from hot surface to avoid burns or clothing ignition Heater will remain hot for a time after shut down Allow surface to cool before touching Carefully supervise youn...

Page 4: ...n Association Inc Batterymarch Park Quincy MA 02269 State of Massachusetts The installation must be made by a licensed plumber or gas fitter in the Commonwealth of Mas sachusetts Sellers of unvented p...

Page 5: ...e air that leaks around doors and windows may provide enough fresh air for combustion and ventilation However in buildings of un usually tight construction you must provide additional fresh air Unusua...

Page 6: ...nclude direct vent gas appliances Direct vent draws combustion air from the outdoors and vents to the outdoors Example Gas water heater ____________Btu Hr Vent free heater ___________Btu Hr Total ____...

Page 7: ...as your pri mary heat source If you have a centralheatingsystem youmay run system s circulating blower whileusingheater Thiswillhelp circulatetheheatthroughoutthe house In the event of a power outage...

Page 8: ...es of the heater as a fireplace insert in high traffic areas in windy or drafty areas Figure 4 Mounting Clearances As Viewed From Front of Heater INSTALLATION Continued CAUTION This heater cre ates wa...

Page 9: ...out 3 Remove any remaining packaging ma terials Methods For Attaching Mounting Bracket To Wall Only use last hole on each end of mounting bracket to attach bracket to wall These two holes are 14 apar...

Page 10: ...Thin Walls Mounting Bracket attached to wall Horizontal Slots Attaching To Wall Anchor Method For attaching mounting bracket to hollow walls wall areas between studs or solid walls concrete or masonry...

Page 11: ...TER TO FLOOR WITH OPTIONAL FLOOR KIT Mounting Base Feet to Heater Note A 90 elbow is required for mounting this unit and must be installed BEFORE base feet to provide proper clearance see Figure 15 pa...

Page 12: ...d propane LP supply For propane LP gas the installer must supply an external regulator The external regulator will reduce incoming gas pressure You must reduce incoming gas pressure to between 11 and...

Page 13: ...egulator body could be damaged INSTALLATION Continued CAUTION For propane LP gas make sure external regula tor has been installed between propane LP supply and heater See guidelines under Connect ing...

Page 14: ...LATION Continued 7 Turn off heater see To Turn Off Gas to Appliance page 16 8 Replace front panel CONNECTING TO ELECTRICAL SUPPLY WARNING Fan accessory must be grounded Fan comes with a three prong gr...

Page 15: ...OFF position O F F P I L O T Figure 20 Control Knob In The OFF Position Ignitor Button Control Knob 5 Wait five minutes to clear out any gas Then smell for gas including near the floor If you smell g...

Page 16: ...helps distrib ute heated air from the heater TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1 Turn control knob clockwise to the OFF position 2 Turn off all electric power to the appliance if servi...

Page 17: ...eck pilot flame pattern and burner flame pattern often PILOT FLAME PATTERN Figure 22 shows a correct pilot flame pattern Figure 23 shows an incorrect pilot flame pat tern The incorrect pilot flame is...

Page 18: ...ese areas of heater before each use Have heater inspected yearly by a qualified service person Heater may need more frequent clean ing due to excessive lint from carpeting bedding material pet hair et...

Page 19: ...position 4 Air in gas lines when in stalled 5 Depleted gas supply pro pane LP gas only 6 ODS pilot is clogged 7 Gas regulator setting is not correct OBSERVED PROBLEM When ignitor button is pressed th...

Page 20: ...ane LP gas company 1 Contact local natural or propane LP gas company 2 Clean burner see Cleaning and Maintenance page 18 or replace burner orifice 1 Clean burner see Cleaning and Maintenance page 18 o...

Page 21: ...rs from furniture polish wax carpet cleaners etc may turn into white powder residue 1 Metal expanding while heating or contracting while cooling REMEDY 1 Check burner for dirt and debris If found clea...

Page 22: ...artially clogged 1 Gas leak See Warning statement above 2 Control valve defective 1 Foreign matter between control valve and burner 2 Gas leak See Warning statement above 1 Not enough combustion venti...

Page 23: ...cal service web site at www desatech com REPLACEMENT PARTS Note Use only original replacement parts This will protect your warranty coverage for parts replaced under warranty PARTS UNDER WARRANTY Cont...

Page 24: ...www desatech com 119169 01E 24 20 10 7 1 15 17 2 3 5 6 8 9 10 11 12 13 14 16 18 19 25 21 23 24 22 4 ILLUSTRATED PARTS BREAKDOWN MODELS NY108 AND NY109...

Page 25: ...098249 01 Nut 2 11 110803 01 ODS Pilot Assembly 1 110803 02 ODS Pilot Assembly 1 12 103446 02 Burner 1 13 099387 03 Pilot Tubing 1 14 103845 05 Injector 1 103845 06 Injector 1 15 099066 02 Mounting B...

Page 26: ...ot Burns and electrical shock could result Only a qualified service person should service or repair heater CAUTION Label all wires prior to disconnection when servicingcontrols Wiringerrors can cause...

Page 27: ...0505 1 800 446 1446 www nbmc com PARTS CENTRALS These Parts Centrals are privately owned businesses They have agreed to support our customer s needs by providing original replacement parts and accesso...

Page 28: ...roducts who will provide original factory replacement parts Failure to use original factory replacement parts voids this warranty The heater MUST be installed by a qualified installer in accordance wi...

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