Enviro C-10100 User Manual

FOR INSTALLERS AND SERVICE TECHNICIANS ONLY

GAS

FIREPLACE

SERVICE

MANUAL

Sherwood Industries Ltd. Duplication of this document is prohibited. All rights reserved.

August 2003 C-10100

This is a service guide designed by SHERWOOD INDUSTRIES LTD.
We hope this manual will assist you to identify and correct operational concerns you might
experience in all ENVIROGAS appliances.
This service guide is designed for TRAINED SERVICE TECHNICIANS AND INSTALLERS.
This guide is NOT to be used by the homeowner.
If after reading this guide and following our recommendations and the problem still excists,
please do-not hesitate to call our technical department.
Technical Division
SHERWOOD INDUSTRIES LTD.

TABLE OF CONTENTS PAGE

1)

PILOT WILL NOT STAY LIGHT

A) IGNITION SYSTEM………………………………………………………. 1

B) IGNITION SYSTEM OK BUT PILOT WILL NOT LIGHT……………... 3

2) PILOT WILL NOT STAY LIT……………………………………………………… 7

3) MAIN BURNERS WILL NOT LIGHT…………………………………………….. 9

4) MAIN BURNERS WILL NOT STAY LIT…………………………………………. 11

5) SOOTING (ALL MODELS)…………………………………………………….…. 15

6) FLAME LIFTING
A) B-VENTED………………………………………………………………... 17
B) DIRECT VENTED………………………………………………………... 18

7) BLOWER OPERATION ………………………………………………………….. 19

8) ORIFICE SIZING CHART………………………………………………………… 20

9) STEP BY STEP SERVICE INSTRUCTIONS…………………………………… 21

10) GLOSSARY………………………………………………………………………. 23

SUGGESTED TOOLS LIST FOR SERVICING

GAS LEAK DETECTOR
MANOMETER
MULTIMETER
CORDLESS DRILL
WIRE STRIPPER/CRIMPER
WRENCHES, STANDARD AND METRIC
SCREWDRIVERS (TORX T20)
METAL SNIPS
JUMPER WIRES
NUMBERED DRILLS ((DMS))

Sherwood Industries Ltd. ENVIRO 2003

Make sure that wires are not

broken, frayed and that all

connections are tight at both

the piezo ignitor and

electrode.

1(PILOT WILL NOT LIGHT

NO SPARK

A) IGNITION SYSTEM

Replace with only

manufactures parts

Make sure that ceramic on the

electrode is not broken.
Carefully try to spin the

porcelain.

Make sure a 1/8” (3.175mm)

gap is maintained between

electrode and pilot hood.

SEE PAGE 2 FIGURE 1.

Make sure the piezo ignitor is

not loose.

Make sure piezo ignitor is
working properly. Place a

screwdriver next to ignitor,

and press ignitor. If it sparks,

OK.

IF IT DOES, replace

electrode.

Replace electrode.

Retighten hex nut on back

of the ignitor and make

sure bracket is secure on

the valve.

IF IT FAILS, replace piezo

ignitor.

Sherwood Industries Ltd. ENVIRO PAGE 1

3.175mm

Sherwood Industries Ltd. ENVIRO PAGE 2

B) PIEZO IGNITOR OK BUT PILOT WILL STILL NOT LIGHT

Make sure all gas lines have

been connected with no

leaks.

Make sure that the gas is

“ON” (NG) Natural gas and

(LP) Propane tanks are full.

Make sure the appliance

service valve is in the “ON”

position.

SEE PAGE 4 FIGURE 3.

Test to make sure there is no

air in the gas line.

SEE PAGE 4 FIGURE 3.

Correct if necessary, test

for gas leaks in an

approved manner.

Correct if necessary.

Turn service valve to the

“ON” position.

Use a match to see if air or

gas comes from the pilot

assembly.

Make sure that the valve has

not reset itself.

(All valves have an interlock

safety device.)

Make sure pilot injector is

not clogged.

Sherwood Industries Ltd. ENVIRO PAGE 3

Wait 60 seconds for the

safety to reset itself.

Clean the pilot injector if

necessary.

EXPLODED VIEW S.I.T PILOT ASSEMBLY

To remove pilot injector:

Remove the two screws that hold
the pilot assembly to the burner
control assembly.

Lift the assembly straight up being
careful not to damage any
components.

Using a 10 mm wrench undo the
securing nut on pilot tubing and pull
tubing down to access injector.
Being careful not to damage the
ceramic spark electrode.

Replace the injector and reinstall
the pilot tubing, always to perform a
gas leak test before lighting the
pilot assembly.

The number on the side of the
injector will determine the size. This
number is in millimeters.

PILOT HEAD

THERMOPILE

PILOT INJECTOR

SPARK ELECTRODE

THERMOCOUPLE

Sherwood Industries Ltd. ENVIRO PAGE 4

3.5” wc BELOW 0

3.5” wc ABOVE 0

INLET GAS PRESSURE

7” wc (NG) NATURAL

GAS

NO PRESSURE

1.75” wc BELOW 0

1.75” wc ABOVE 0

OUTLET GAS PRESSURE

3.5 “ wc (NG) NATURAL
GAS

SUPPLY PRESSURES

NATURAL GAS

PROPANE GAS

50% TURN DOWN MAX SUPPLY PRESSURE 7” wc 12” wc

MIN SUPPLY PRESSURE 5” wc 11.5” wc

33% TURN DOWN MAX SUPPLY PRESSURE 7” wc 13” wc

MIN SUPPLY PRESSURE 4.5” wc 10.5” wc

Sherwood Industries Ltd. ENVIRO PAGE 5

190 mv DC

CHECKING THERMOPILE FOR PROPER VOLTAGE

Place the leads of the multimeter on the TP/TH and TP

terminals on the valve as shown.

With the switch in the “ON” position, the readings should

be approximately 190mV DC (this an average reading) or

greater for proper Thermopile operation.

The main burners may not come ON if the readings are

less than 145mV DC.

If a thermostat has been installed. Place the

ON/OFF/THERMO switch in the THERMO position; place

the leads of the multimeter on the TP/TH and TH terminals

on the valve or on the connections at the thermostat.

MV reading should be higher than 190 mV DC for proper

valve operation.

THESE READINGS SHOULD BE CONSTANT WITH NO

FLUCTUATION.

2 to 6mv DC

CHECKING

THERMOCOUPLE FOR

PROPER VOLTAGE

Place one lead from the

multimeter on the

thermocouple lead, and the

other lead from the

multimeter on the back of

the valve where the blue

wire is soldered to the valve.

These readings should be

between 8 and 16mV DC.
If these readings are 2 to 6
mV DC, the Thermocouple

should be replaced

When using a S.I.T EUROSIT 630 SERIES gas valve, place

one lead from the multimeter on the thermocouple lead and

the other lead into the adapter located on the back of the

valve, there are two blue wire a inserted into this adapter.

Sherwood Industries Ltd. ENVIRO PAGE 6