P7810C,D PRESSURETROL
®
CONTROLLER
65-0235—1
3
Fig. 1. Approximate dimensions of P7810 Pressuretrol® Controller in in. (mm).
INSTALLATION
When Installing this Product…
1. Read instructions carefully. Failure to follow them could
damage the product or cause a hazardous condition.
2. Check ratings (pressure and voltage, for example) and
description given in the specifications to make sure the
product is suitable for your application.
3. Installer must be a trained, experienced Flame
Safeguard technician.
4. After installation is complete, check out product
operation as provided in these instructions.
WARNING
Electrical shock hazard.
Can cause electrical shock, serious injury
or death.
1.
Disconnect power before installation. More than
one power supply disconnect may be involved.
2.
Allow pressure to decrease to atmosphere from
the pressure vessel before removing old control.
3.
Do not remove the over pressure inlet seal until
ready to connect piping to prevent contamination
of inlet.
4.
Follow all installation and checkout procedures for
safe installation.
Location
IMPORTANT
Locate P7810C,D Pressuretrol® Controller where
ambient temperature does not exceed 150
°
F (66
°
C)
to prevent equipment damage.
Install P7810C,D Pressuretrol® Controller above boiler water
line when used with steam boilers. Connect siphon loop (part
number 209731A or equivalent) between P7810C,D
Pressuretrol® Controller and boiler to prevent scale and
corrosive vapors from attacking controller sensor element.
Mount the siphon loop in any position with a 0
°
to 90
°
pipe
drain position. Mount the P7810C,D Pressuretrol® Controller
next to the pressure gauge in the manufacturer-provided
fitting on the boiler. See Fig. 2. Mount at a remote location to
avoid excessive vibration, or mount in a special mounting on
a low water cutoff.
IMPORTANT
1. Locate P7810C,D Pressuretrol® Controller where
ambient temperature does not exceed 150
°
F (66
°
C).
2. Use pipe compound sparingly to avoid clogging hole
in pipe or sensor element fitting.
3. Do not hand tighten Pressuretrol® Controller
connection by holding the case. Use wrench on flats
of sensor fitting to avoid leaks and damage to the
case.
4. Level the controller for appearance.
5. Install the P7810C,D where the relative humidity
never reaches the saturation point. The P7810 is
designed to operate in a maximum 85 percent
relative humidity, continuous, noncondensing
moisture environment. Condensing moisture can
cause a shutdown.
6. Do not install the P7810C,D where it could be
subjected to vibration in excess of 0.5G continuous
maximum vibration.
7. The P7810C,D is not designed to be weather tight.
If installed outdoors, protect the P7810 with an
approved weather-tight enclosure.
RESET
PRESSURETROL®
1/4 (6)
2x1-5/8 (41)
1-5/8 (41)
2-5/8 (67)
2x5-1/4 (133)
3-7/32 (82)
2-17/32
(82)
3-3/8 (86)
5-1/4
(133)
2x
3-3/16
(81)
2-1/8
(55)
4-23/32
(120)
2x27/32 (22)
DIAMETER
5-29/32 (150)
4-21/32 (119)
2-5/8
(67)
4
(102)
4-3/4
(120)
3/8
(10)
7/8
(22)
1
1
1
DIMENSIONS WITH DOOR IN OPEN POSITION.
M11893
2
2
PIPE THREAD IS 1/2 INCH NATIONAL PIPE THREAD.