Planning The Installation - Honeywell S9360B Installation Instructions Manual

S9360B, S9361B, S9370B, S9371B, S9380B, S9381B INTEGRATED WATER HEATER CONTROLLERS
Table 1. Recommended ignition cables.
Voltage
Rating
Cable Type (rms)
UL Style 3217 10,000
UL Style 3257 10,000
Transformer Requirement:
Add current ratings of module, pilot valve, main valve,
vent damper and any other components of the control
system to determine transformer size requirement.
Ignition
Model Type
S9360B1000, Intermittent
S9360B1007, Pilot - Spark
c
S9360B1017
S9360B1010, Intermittent
S9360B1015 Pilot - Spark
S9370B1005 Direct Hot
Surface
S9380B1001 Direct Spark
Ignition
a
Ignition Activation Period is the time that the hot surface igniter remains powered after the gas valve opens.
b
Purge Timing specified in seconds.
c
Maximum setpoint is 180 ºF.

PLANNING THE INSTALLATION

Automatic Ignition Control domestic and commercial
water heating systems are used on a wide variety of
equipment. Some of these applications may make
heavy demands on the controls, either because of
frequent cycling, or because of moisture, corrosive
chemicals, dust or excessive heat in the environment.
In these situations, special steps may be required to
prevent nuisance shutdowns and premature control
failures. These applications require Honeywell
Engineering review; contact your Honeywell Sales
Representative for assistance.
Frequent Cycling
These controls are designed for use on domestic and
commercial water heating systems that typically cycle
less than 10,000 cycles per year. In an application with
significantly greater cycling rates, we recommend
monthly checkout because the controls may wear out
more quickly.
Water or Steam Cleaning
Once a module or gas control has been wet, it may
operate unreliably and must be replaced. If the
appliance is likely to be cleaned with water or steam,
the controls and associated wiring should be covered
so that water or steam cannot reach them. The
controls should be high enough above the bottom of
the cabinet so they will not be subjected to flooding or
splashing during normal cleaning procedures. If
necessary, shield the controls to protect them from
splashing water. A NEMA 4 enclosure is
recommended.
Temperature Rating
°C °F
150 302
250 484
Table 2. Specific ignition timings.
No. of
Ignition
Draft Type Trials
Induced 3
Atmospheri 3
c
Induced 3
Induced 3
Approvals:
Varies with control model.
ANSI Z21.20 Automatic Gas Ignition Systems and
Components.
ANSI Z21.23 Gas Appliance Thermostats.
EN298: Automatic Gas Burner Control Systems
ANSI Z21.87: Automatic Gas Shutoff Devices for Hot
Water Supply Systems.
Ignition timings:
(See Table 2).
Igniter/S Automati
ensor c Restart
Type Time
Separate 1 hour
Separate 1 hour
Separate 1 hour
Single 1 hour
High Humidity or Dripping Water
Over time, dripping water or high ambient humidity
can create unwanted electrical paths on the module
circuit board, causing the module to fail. Never install
an appliance where water can drip on the controls.
In addition, high ambient humidity can cause the gas
control to corrode and finally fail.
Where the appliance may be installed in a humid
atmosphere, make sure air circulation around the
module and gas control is adequate to prevent
condensation. It is also important to regularly check
out the system. A NEMA 4 enclosure may be needed.
Corrosive Chemicals
Corrosive chemicals can also attack the module and
gas control and eventually cause a failure. Where
chemicals may be used routinely for cleaning, make
sure the cleaning solution cannot reach the controls.
Where chemicals are likely to be suspended in the air,
as in some industrial and agricultural applications,
protect the module from exposure with a NEMA 4
enclosure.
Dust or Grease Accumulation
Heavy accumulation of dust or grease may cause the
controls to malfunction. Where dust or grease may be
a problem, provide covers for the module and gas
control that limit environmental contamination. A
NEMA 4 enclosure is recommended for the module.
3
Ignition Prepurg
Activatio e
a b
n Period Timing
N/A 15
N/A 1
2.5 5
N/A 15
Postpurg
b
e Timing
5
5
15
10
69-1792—09