Potterton Derwent Compact Plus Installation, Operation & Maintenance Manual page 16

SECTION 5
PAGE 14
Control Panel
Pump Switch (Not Used)
Green Indicator Light
Pump Indicator
Showing 1
Light
(If light flashes indication of
overheat fault)
Boiler Temperature
Control Thermostat
The CE 100 module provides the following
functions:
st
- Operation at 1 Stage
- Detection of boiler overheat, ionisation
probe fault
- Ability to restrict max boiler temperature
using jumper at back of module
- Indication of the operation mode of the boiler
nd
- Operation of 2 Stage operation.
CB 120
1
2
3
4
The CB 120 module provides the following
functions:
1. Reset Button
2. Overheat Thermostat
3. Overheat Indicator
4. Lockout Indicator
5. Mains Supply Indicator
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
CE 100
nd
2 Stage
Indicator Light
nd
2 Stage Thermostat
st
Stage Run
10
9
8
5 6
7
POTTERTON COMMERCIAL PRODUCTS DIVISION
DERWENT COMPACT PLUS - CONDENSING
6. On/Off Switch
7. Override button for Safety Checks
8. Override Thermostat
right((maximum position)) allowing control by
st
the 1 Stage and 2
9. 6.3 Amp Fuse
10. Boiler Thermometer
Gas Assembly
(8 Section Model Shown)
The Gas Assembly is pre-set at the factory ready
for use at high and low conditions.
The 4 Section model has one main valve, the 6 &
8 section have one main gas valve and one slave
valve.
The main gas valve has a two-stage governor for
high and low load (left valve).
The slave gas valve has single stage operation
only and its governor is pre-set at the factory.
The governor has a yellow cover and the setting
up is shown below.
Set-up
For fine adjustment of the gas valve on
commissioning in order to obtain the correct
(Set fully to the
nd
Stage thermostats)